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280289bd3b This commit was manufactured by cvs2svn to create tag 'BeforeMac'.
git-svn-id: svn://10.0.0.236/tags/BeforeMac@4227 18797224-902f-48f8-a5cc-f745e15eee43
1998-06-22 17:41:19 +00:00
167 changed files with 8785 additions and 54423 deletions

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@@ -1,617 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1999 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsAVLTree.h"
enum eLean {eLeft,eNeutral,eRight};
struct NS_COM nsAVLNode {
public:
nsAVLNode(void* aValue) {
mLeft=0;
mRight=0;
mSkew=eNeutral;
mValue=aValue;
}
nsAVLNode* mLeft;
nsAVLNode* mRight;
eLean mSkew;
void* mValue;
};
/************************************************************
Now begin the tree class. Don't forget that the comparison
between nodes must occur via the comparitor function,
otherwise all you're testing is pointer addresses.
************************************************************/
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
nsAVLTree::nsAVLTree(nsAVLNodeComparitor& aComparitor,
nsAVLNodeFunctor* aDeallocator) :
mComparitor(aComparitor), mDeallocator(aDeallocator) {
mRoot=0;
mCount=0;
}
static void
avlDeleteTree(nsAVLNode* aNode){
if (aNode) {
avlDeleteTree(aNode->mLeft);
avlDeleteTree(aNode->mRight);
delete aNode;
}
}
/**
*
* @update gess12/27/98
* @param
* @return
*/
nsAVLTree::~nsAVLTree(){
if (mDeallocator) {
ForEachDepthFirst(*mDeallocator);
}
avlDeleteTree(mRoot);
}
class CDoesntExist: public nsAVLNodeFunctor {
public:
CDoesntExist(const nsAVLTree& anotherTree) : mOtherTree(anotherTree) {
}
virtual void* operator()(void* anItem) {
void* result=mOtherTree.FindItem(anItem);
if(result)
return nsnull;
return anItem;
}
protected:
const nsAVLTree& mOtherTree;
};
/**
* This method compares two trees (members by identity).
* @update gess12/27/98
* @param tree to compare against
* @return true if they are identical (contain same stuff).
*/
PRBool nsAVLTree::operator==(const nsAVLTree& aCopy) const{
CDoesntExist functor(aCopy);
void* theItem=FirstThat(functor);
PRBool result=PRBool(!theItem);
return result;
}
/**
*
* @update gess12/27/98
* @param
* @return
*/
static void
avlRotateRight(nsAVLNode*& aRootNode){
nsAVLNode* ptr2;
nsAVLNode* ptr3;
ptr2=aRootNode->mRight;
if(ptr2->mSkew==eRight) {
aRootNode->mRight=ptr2->mLeft;
ptr2->mLeft=aRootNode;
aRootNode->mSkew=eNeutral;
aRootNode=ptr2;
}
else {
ptr3=ptr2->mLeft;
ptr2->mLeft=ptr3->mRight;
ptr3->mRight=ptr2;
aRootNode->mRight=ptr3->mLeft;
ptr3->mLeft=aRootNode;
if(ptr3->mSkew==eLeft)
ptr2->mSkew=eRight;
else ptr2->mSkew=eNeutral;
if(ptr3->mSkew==eRight)
aRootNode->mSkew=eLeft;
else aRootNode->mSkew=eNeutral;
aRootNode=ptr3;
}
aRootNode->mSkew=eNeutral;
return;
}
/**
*
* @update gess12/27/98
* @param
* @return
*/
static void
avlRotateLeft(nsAVLNode*& aRootNode){
nsAVLNode* ptr2;
nsAVLNode* ptr3;
ptr2=aRootNode->mLeft;
if(ptr2->mSkew==eLeft) {
aRootNode->mLeft=ptr2->mRight;
ptr2->mRight=aRootNode;
aRootNode->mSkew=eNeutral;
aRootNode=ptr2;
}
else {
ptr3=ptr2->mRight;
ptr2->mRight=ptr3->mLeft;
ptr3->mLeft=ptr2;
aRootNode->mLeft=ptr3->mRight;
ptr3->mRight=aRootNode;
if(ptr3->mSkew==eRight)
ptr2->mSkew=eLeft;
else ptr2->mSkew=eNeutral;
if(ptr3->mSkew==eLeft)
aRootNode->mSkew=eRight;
else aRootNode->mSkew=eNeutral;
aRootNode=ptr3;
}
aRootNode->mSkew=eNeutral;
return;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static eAVLStatus
avlInsert(nsAVLNode*& aRootNode, nsAVLNode* aNewNode,
nsAVLNodeComparitor& aComparitor) {
eAVLStatus result=eAVL_unknown;
if(!aRootNode) {
aRootNode = aNewNode;
return eAVL_ok;
}
if(aNewNode==aRootNode->mValue) {
return eAVL_duplicate;
}
PRInt32 theCompareResult=aComparitor(aRootNode->mValue,aNewNode->mValue);
if(0 < theCompareResult) { //if(anItem<aRootNode->mValue)
result=avlInsert(aRootNode->mLeft,aNewNode,aComparitor);
if(eAVL_ok==result) {
switch(aRootNode->mSkew){
case eLeft:
avlRotateLeft(aRootNode);
result=eAVL_fail;
break;
case eRight:
aRootNode->mSkew=eNeutral;
result=eAVL_fail;
break;
case eNeutral:
aRootNode->mSkew=eLeft;
break;
} //switch
}//if
} //if
else {
result=avlInsert(aRootNode->mRight,aNewNode,aComparitor);
if(eAVL_ok==result) {
switch(aRootNode->mSkew){
case eLeft:
aRootNode->mSkew=eNeutral;
result=eAVL_fail;
break;
case eRight:
avlRotateRight(aRootNode);
result=eAVL_fail;
break;
case eNeutral:
aRootNode->mSkew=eRight;
break;
} //switch
}
} //if
return result;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static void
avlBalanceLeft(nsAVLNode*& aRootNode, PRBool& delOk){
nsAVLNode* ptr2;
nsAVLNode* ptr3;
eLean balnc2;
eLean balnc3;
switch(aRootNode->mSkew){
case eLeft:
ptr2=aRootNode->mLeft;
balnc2=ptr2->mSkew;
if(balnc2!=eRight) {
aRootNode->mLeft=ptr2->mRight;
ptr2->mRight=aRootNode;
if(balnc2==eNeutral){
aRootNode->mSkew=eLeft;
ptr2->mSkew=eRight;
delOk=PR_FALSE;
}
else{
aRootNode->mSkew=eNeutral;
ptr2->mSkew=eNeutral;
}
aRootNode=ptr2;
}
else{
ptr3=ptr2->mRight;
balnc3=ptr3->mSkew;
ptr2->mRight=ptr3->mLeft;
ptr3->mLeft=ptr2;
aRootNode->mLeft=ptr3->mRight;
ptr3->mRight=aRootNode;
if(balnc3==eRight) {
ptr2->mSkew=eLeft;
}
else {
ptr2->mSkew=eNeutral;
}
if(balnc3==eLeft) {
aRootNode->mSkew=eRight;
}
else {
aRootNode->mSkew=eNeutral;
}
aRootNode=ptr3;
ptr3->mSkew=eNeutral;
}
break;
case eRight:
aRootNode->mSkew=eNeutral;
break;
case eNeutral:
aRootNode->mSkew=eLeft;
delOk=PR_FALSE;
break;
}//switch
return;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static void
avlBalanceRight(nsAVLNode*& aRootNode, PRBool& delOk){
nsAVLNode* ptr2;
nsAVLNode* ptr3;
eLean balnc2;
eLean balnc3;
switch(aRootNode->mSkew){
case eLeft:
aRootNode->mSkew=eNeutral;
break;
case eRight:
ptr2=aRootNode->mRight;
balnc2=ptr2->mSkew;
if(balnc2!=eLeft) {
aRootNode->mRight=ptr2->mLeft;
ptr2->mLeft=aRootNode;
if(balnc2==eNeutral){
aRootNode->mSkew=eRight;
ptr2->mSkew=eLeft;
delOk=PR_FALSE;
}
else{
aRootNode->mSkew=eNeutral;
ptr2->mSkew=eNeutral;
}
aRootNode=ptr2;
}
else{
ptr3=ptr2->mLeft;
balnc3=ptr3->mSkew;
ptr2->mLeft=ptr3->mRight;
ptr3->mRight=ptr2;
aRootNode->mRight=ptr3->mLeft;
ptr3->mLeft=aRootNode;
if(balnc3==eLeft) {
ptr2->mSkew=eRight;
}
else {
ptr2->mSkew=eNeutral;
}
if(balnc3==eRight) {
aRootNode->mSkew=eLeft;
}
else {
aRootNode->mSkew=eNeutral;
}
aRootNode=ptr3;
ptr3->mSkew=eNeutral;
}
break;
case eNeutral:
aRootNode->mSkew=eRight;
delOk=PR_FALSE;
break;
}//switch
return;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static eAVLStatus
avlRemoveChildren(nsAVLNode*& aRootNode,nsAVLNode*& anotherNode, PRBool& delOk){
eAVLStatus result=eAVL_ok;
if(!anotherNode->mRight){
aRootNode->mValue=anotherNode->mValue; //swap
anotherNode=anotherNode->mLeft;
delOk=PR_TRUE;
}
else{
avlRemoveChildren(aRootNode,anotherNode->mRight,delOk);
if(delOk)
avlBalanceLeft(anotherNode,delOk);
}
return result;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static eAVLStatus
avlRemove(nsAVLNode*& aRootNode, void* anItem, PRBool& delOk,
nsAVLNodeComparitor& aComparitor){
eAVLStatus result=eAVL_ok;
if(!aRootNode)
delOk=PR_FALSE;
else {
PRInt32 cmp=aComparitor(anItem,aRootNode->mValue);
if(cmp<0){
avlRemove(aRootNode->mLeft,anItem,delOk,aComparitor);
if(delOk)
avlBalanceRight(aRootNode,delOk);
}
else if(cmp>0){
avlRemove(aRootNode->mRight,anItem,delOk,aComparitor);
if(delOk)
avlBalanceLeft(aRootNode,delOk);
}
else{ //they match...
nsAVLNode* temp=aRootNode;
if(!aRootNode->mRight) {
aRootNode=aRootNode->mLeft;
delOk=PR_TRUE;
delete temp;
}
else if(!aRootNode->mLeft) {
aRootNode=aRootNode->mRight;
delOk=PR_TRUE;
delete temp;
}
else {
avlRemoveChildren(aRootNode,aRootNode->mLeft,delOk);
if(delOk)
avlBalanceRight(aRootNode,delOk);
}
}
}
return result;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
eAVLStatus
nsAVLTree::AddItem(void* anItem){
eAVLStatus result=eAVL_ok;
nsAVLNode* theNewNode=new nsAVLNode(anItem);
result=avlInsert(mRoot,theNewNode,mComparitor);
if(eAVL_duplicate!=result)
mCount++;
else {
delete theNewNode;
}
return result;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
void* nsAVLTree::FindItem(void* aValue) const{
nsAVLNode* result=mRoot;
PRInt32 count=0;
while(result) {
count++;
PRInt32 cmp=mComparitor(aValue,result->mValue);
if(0==cmp) {
//we matched...
break;
}
else if(0>cmp){
//theNode was greater...
result=result->mLeft;
}
else {
//aValue is greater...
result=result->mRight;
}
}
if(result) {
return result->mValue;
}
return nsnull;
}
/**
*
* @update gess12/30/98
* @param
* @return
*/
eAVLStatus
nsAVLTree::RemoveItem(void* aValue){
PRBool delOk=PR_TRUE;
eAVLStatus result=avlRemove(mRoot,aValue,delOk,mComparitor);
if(eAVL_ok==result)
mCount--;
return result;
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
static void
avlForEachDepthFirst(nsAVLNode* aNode, nsAVLNodeFunctor& aFunctor){
if(aNode) {
avlForEachDepthFirst(aNode->mLeft,aFunctor);
avlForEachDepthFirst(aNode->mRight,aFunctor);
aFunctor(aNode->mValue);
}
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
void
nsAVLTree::ForEachDepthFirst(nsAVLNodeFunctor& aFunctor) const{
::avlForEachDepthFirst(mRoot,aFunctor);
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
static void
avlForEach(nsAVLNode* aNode, nsAVLNodeFunctor& aFunctor) {
if(aNode) {
avlForEach(aNode->mLeft,aFunctor);
aFunctor(aNode->mValue);
avlForEach(aNode->mRight,aFunctor);
}
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
void
nsAVLTree::ForEach(nsAVLNodeFunctor& aFunctor) const{
::avlForEach(mRoot,aFunctor);
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
static void*
avlFirstThat(nsAVLNode* aNode, nsAVLNodeFunctor& aFunctor) {
void* result=nsnull;
if(aNode) {
result = avlFirstThat(aNode->mLeft,aFunctor);
if (result) {
return result;
}
result = aFunctor(aNode->mValue);
if (result) {
return result;
}
result = avlFirstThat(aNode->mRight,aFunctor);
}
return result;
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
void*
nsAVLTree::FirstThat(nsAVLNodeFunctor& aFunctor) const{
return ::avlFirstThat(mRoot,aFunctor);
}

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@@ -1,74 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1999 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsAVLTree_h___
#define nsAVLTree_h___
#include "nscore.h"
enum eAVLStatus {eAVL_unknown,eAVL_ok,eAVL_fail,eAVL_duplicate};
struct nsAVLNode;
/**
*
* @update gess12/26/98
* @param anObject1 is the first object to be compared
* @param anObject2 is the second object to be compared
* @return -1,0,1 if object1 is less, equal, greater than object2
*/
class NS_COM nsAVLNodeComparitor {
public:
virtual PRInt32 operator()(void* anItem1,void* anItem2)=0;
};
class NS_COM nsAVLNodeFunctor {
public:
virtual void* operator()(void* anItem)=0;
};
class NS_COM nsAVLTree {
public:
nsAVLTree(nsAVLNodeComparitor& aComparitor, nsAVLNodeFunctor* aDeallocator);
~nsAVLTree(void);
PRBool operator==(const nsAVLTree& aOther) const;
PRInt32 GetCount(void) const {return mCount;}
//main functions...
eAVLStatus AddItem(void* anItem);
eAVLStatus RemoveItem(void* anItem);
void* FindItem(void* anItem) const;
void ForEach(nsAVLNodeFunctor& aFunctor) const;
void ForEachDepthFirst(nsAVLNodeFunctor& aFunctor) const;
void* FirstThat(nsAVLNodeFunctor& aFunctor) const;
protected:
nsAVLNode* mRoot;
PRInt32 mCount;
nsAVLNodeComparitor& mComparitor;
nsAVLNodeFunctor* mDeallocator;
};
#endif /* nsAVLTree_h___ */

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@@ -0,0 +1,140 @@
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# PROP Use_MFC 0
# PROP Use_Debug_Libraries 0
# PROP Output_Dir "Release"
# PROP Intermediate_Dir "Release"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c
# ADD CPP /nologo /MD /W3 /GX /O2 /I "$(JDK)\include" /I "$(JDK)\include\win32" /I "." /D "_WIN32" /D "WIN32" /D "NDEBUG" /D "XP_PC" /D "_WINDOWS" /D "JSFILE" /D "LIVECONNECT" /YX /FD /c
# ADD BASE RSC /l 0x409 /d "NDEBUG"
# ADD RSC /l 0x409 /d "NDEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386 /out:"Release/lcshell.exe"
# Begin Special Build Tool
SOURCE=$(InputPath)
PostBuild_Desc=Copy DLL(s) to build directory
PostBuild_Cmds=COPY ..\Release\js32.dll .\Release
# End Special Build Tool
!ELSEIF "$(CFG)" == "LiveConnectShell - Win32 Debug"
# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 1
# PROP BASE Output_Dir "LiveConnectShell0"
# PROP BASE Intermediate_Dir "LiveConnectShell0"
# PROP BASE Target_Dir ""
# PROP Use_MFC 0
# PROP Use_Debug_Libraries 1
# PROP Output_Dir "Debug"
# PROP Intermediate_Dir "Debug"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /W3 /Gm /GX /Zi /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c
# ADD CPP /nologo /MDd /W3 /Gm /GX /Zi /Od /I "$(JDK)\include" /I "$(JDK)\include\win32" /I "." /D "LIVECONNECT" /D "_WIN32" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D "XP_PC" /D "_WINDOWS" /D "JSFILE" /FR /YX /FD /c
# SUBTRACT CPP /u
# ADD BASE RSC /l 0x409 /d "_DEBUG"
# ADD RSC /l 0x409 /d "_DEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /out:"Debug/lcshell.exe" /pdbtype:sept
# Begin Special Build Tool
SOURCE=$(InputPath)
PostBuild_Desc=Copy DLL(s) to build directory
PostBuild_Cmds=COPY ..\Debug\js32.dll .\Debug
# End Special Build Tool
!ENDIF
# Begin Target
# Name "LiveConnectShell - Win32 Release"
# Name "LiveConnectShell - Win32 Debug"
# Begin Source File
SOURCE=..\js.c
# End Source File
# Begin Source File
SOURCE=..\Debug\js32.lib
# End Source File
# End Target
# End Project

View File

@@ -0,0 +1,44 @@
Microsoft Developer Studio Workspace File, Format Version 5.00
# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!
###############################################################################
Project: "LiveConnect"=.\LiveConnect.dsp - Package Owner=<4>
Package=<5>
{{{
}}}
Package=<4>
{{{
}}}
###############################################################################
Project: "LiveConnectShell"=.\LiveConnectShell.dsp - Package Owner=<4>
Package=<5>
{{{
}}}
Package=<4>
{{{
Begin Project Dependency
Project_Dep_Name LiveConnect
End Project Dependency
}}}
###############################################################################
Global:
Package=<5>
{{{
}}}
Package=<3>
{{{
}}}
###############################################################################

View File

@@ -0,0 +1,301 @@
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="Author" CONTENT="Scott Furman">
<META NAME="GENERATOR" CONTENT="Mozilla/4.05 [en] (WinNT; I) [Netscape]">
<TITLE>README for LiveConnect</TITLE>
</HEAD>
<BODY>
<CENTER>
<H2>
<FONT COLOR="#CC0000"><FONT SIZE=+3>WARNING:</FONT></FONT></H2></CENTER>
<CENTER>
<H2>
<FONT COLOR="#CC0000">This document is a skeleton, still&nbsp;<BR>
very much under construction.</FONT></H2></CENTER>
<H2>
Introduction</H2>
This is the README file for the JavaScript LiveConnect implementation.&nbsp;
It consists of build conventions and instructions, source code conventions,
a design walk-through, and a brief file-by-file description of the source.
<P>This document assumes basic familiarity with JSRef, the reference implementation
of JavaScript, and with the LiveConnect technology&nbsp; (LiveConnect allows
JavaScript and Java virtual machines to be connected.&nbsp; It enables
JavaScript to access Java fields, invoke Java methods and makes it possible
for Java to access JavaScript object properties and evaluate JavaScript.&nbsp;
More information on LiveConnect can be found by searching the index on
Netscape's <A HREF="http://developer.netscape.com">DevEdge site</A>.)
<P>JSRef builds a library or DLL containing the JavaScript runtime (compiler,
interpreter, decompiler, garbage collector, atom manager, standard classes).&nbsp;
The LiveConnect project/makefiles build a library that links both with
JSRef and with a Java Virtual Machine (JVM) that implements the Java Native
Interface (JNI), as specified by JavaSoft.&nbsp; It then compiles a small
"shell" program and links that with the library to make an interpreter
that can be used interactively and with test scripts.
<P><I>Scott Furman, 4/8/98</I>
<H2>
Build conventions</H2>
Update your JVM's <TT><FONT SIZE=+1>CLASSPATH</FONT></TT> to point to the
<TT><FONT SIZE=+1>liveconnect/classes</FONT></TT> subdirectory.&nbsp; If
you do not, LiveConnect will still operate but with the limitation that
JS objects may not be passed as arguments of Java methods and it will not
be possible to call from Java into JavaScript, i.e. the <I>netscape.javascript.JSObject</I>
class will be inaccessible.&nbsp; If your <TT><FONT SIZE=+1>CLASSPATH</FONT></TT>
is set improperly, you will see a message like, "<TT><FONT SIZE=+1>initialization
error: Can't load class netscape/javascript/JSObject</FONT></TT>" when
starting a LiveConnect debug build.
<P>To enable multi-threaded execution, define the <TT><FONT SIZE=+1>JS_THREADSAFE</FONT></TT>
cpp macro and flesh out the stubs and required headers in jslock.c/.h.&nbsp;
See the JS API docs for more.&nbsp; JSRef must also be built with <TT><FONT SIZE=+1>JS_THREADSAFE</FONT></TT>.
<BR>&nbsp;
<UL><B>Windows</B>
<UL>
<LI>
Use MSDEV5.0 with the <TT><FONT SIZE=+1>LiveConnectShell.dsw</FONT></TT>
project file.</LI>
<LI>
You must first build the JS runtime, js32.dll, by using the normal JSRef
build procedure.</LI>
<LI>
Identify the JVM that you are linking against by setting the <TT><FONT SIZE=+1>JDK</FONT></TT>
environment variable to point to the top-level JDK directory, e.g. <TT><FONT SIZE=+1>D:\jdk1.1.5</FONT></TT>.&nbsp;
This is used to establish paths for header file inclusion, linking and
execution.&nbsp; If you are not using Sun's JVM, the project files may
require manual tweaking to set these paths correctly.</LI>
<LI>
The output files (DLLs and executables) are placed in the <TT><FONT SIZE=+1>js/ref/liveconnect/Debug</FONT></TT>
or <TT><FONT SIZE=+1>js/ref/liveconnect/Release</FONT></TT> directories.</LI>
<LI>
The LiveConnect-enabled shell is named <TT><FONT SIZE=+1>lcshell.exe</FONT></TT>
and appears in the output directory.</LI>
<LI>
You must have the JVM DLL in your <TT><FONT SIZE=+1>PATH</FONT></TT> environment
variable in order to run.&nbsp; If you are using the Sun JDK, the DLL appears
in the JDK's bin directory.<BR>
<BR></LI>
</UL>
<B>Mac</B>
<UL>
<LI>
<FONT COLOR="#FF0000">LiveConnect is known to build on the Mac, but no
project files created yet</FONT></LI>
<LI>
Use CodeWarrior 1.x (???.prj.hqx) or 2 (???.prj2.hqx).<BR>
<BR></LI>
</UL>
<B>Unix</B>
<UL>
<LI>
<FONT COLOR="#FF0000">No Makefiles created yet</FONT></LI>
<LI>
Use vendor cc or gcc (ftp://prep.ai.mit.edu/pub/gnu) for compiling,&nbsp;
and use gmake for building.</LI>
<LI>
To compile optimized code, set BUILD_OPT=1 on the nmake/gmake command line
or preset it in the environment or makefile.&nbsp; The C preprocessor macro
DEBUG&nbsp; will be undefined, and NDEBUG (archaic Unix-ism for "No Debugging")
will be defined.&nbsp; Without BUILD_OPT, DEBUG is predefined and NDEBUG
is undefined.</LI>
<LI>
Your own debug flag, DEBUG_$USER, will be defined or undefined as BUILD_OPT
is unset or set.</LI>
<LI>
To add C compiler options from the make command line, set XCFLAGS=-Dfoo.</LI>
<LI>
To predefine -D or -U options in the makefile, set DEFINES.</LI>
<LI>
To predefine -I options in the makefile, set INCLUDES.</LI>
</UL>
</UL>
<H2>
Naming and coding conventions:</H2>
<UL>
<LI>
Public function names begin with JSJ_ followed by capitalized "intercaps",&nbsp;
e.g. JSJ_ConnectToJavaVM.</LI>
<LI>
Extern but library-private function names use a jsj_ prefix and mixed case,
e.g. jsj_LookupSymbol.</LI>
<LI>
Most static function names have unprefixed, underscore-separated names:
get_char.</LI>
<LI>
But static native methods of JS objects have intercaps names, e.g., JavaObject_getProperty().</LI>
<LI>
And library-private and static data use underscores, not intercaps (but
library-private data do use a js_ prefix).</LI>
<LI>
Scalar type names are lowercase and js-prefixed: jsdouble.</LI>
<LI>
Aggregate type names are JS-prefixed and mixed-case: JSObject.</LI>
<LI>
Macros are generally ALL_CAPS and underscored, to call out potential side
effects, multiple uses of a formal argument, etc.</LI>
<LI>
Four spaces of indentation per statement nesting level.&nbsp; The files
are space-filled, so adjusting of your tab setting should be unnecessary.</LI>
<LI>
DLL entry points have their return type expanded within a PR_PUBLIC_API()&nbsp;
macro call, to get the right Windows secret type qualifiers in the right
places for both 16- and 32-bit builds.</LI>
<LI>
Callback functions that might be called from a DLL are similarly macroized
with PR_STATIC_CALLBACK (if the function otherwise would be static to hide
its name) or PR_CALLBACK (this macro takes no type argument; it should
be used after the return type and before the function name).</LI>
</UL>
<H2>
The LiveConnect API</H2>
All public LiveConnect entry points and callbacks are documented in jsjava.h,
the header file that exports those functions.
<H2>
Design walk-through</H2>
&nbsp;
<BR>&nbsp;
<H2>
File walk-through</H2>
&nbsp;
<TABLE BORDER=3 CELLSPACING=0 CELLPADDING=4 >
<TR>
<TD>jsjava.h</TD>
<TD>LiveConnect's only public header file.&nbsp; Defines all public API
entry points, callbacks and types.&nbsp;</TD>
</TR>
<TR>
<TD>jsj_private.h</TD>
<TD>LiveConnect internal header file for intra-module sharing of functions
and types</TD>
</TR>
<TR>
<TD>jsj.c</TD>
<TD>Public LiveConnect API entry points and initialization code</TD>
</TR>
<TR>
<TD>jsj_array.c</TD>
<TD>Read and write elements of a Java array, performing needed conversions
to/from JS types.</TD>
</TR>
<TR>
<TD>jsj_class.c</TD>
<TD>Construct and manipulate JavaClassDescriptor structs, which are the
native representation for Java classes.&nbsp; JavaClassDescriptors are
used to describe the methods and fields of a class, including their type
signatures, and include a reference to the peer <I>java.lang.Class</I>
object.&nbsp; Since each Java object has a class, there is a JavaClassDescriptor
associated with the JavaScript reflection of each Java Object.</TD>
</TR>
<TR>
<TD>jsj_convert.c</TD>
<TD>Convert between Java and JavaScript values of all types, which may
require calling routines in other files to wrap JS objects as Java objects
and vice-versa.</TD>
</TR>
<TR>
<TD>jsj_field.c</TD>
<TD>Reflect Java fields as properties of JavaObject objects and implement
getter/setter access to those fields.</TD>
</TR>
<TR>
<TD>jsj_JavaArray.c</TD>
<TD>Implementation of the JavaScript JavaArray class.&nbsp; Instances of
JavaArray are used to reflect Java arrays.</TD>
</TR>
<TR>
<TD>jsj_JavaClass.c</TD>
<TD>Implementation of the JavaScript JavaClass class.&nbsp;&nbsp; Instances
of JavaClass are used to reflect Java classes.</TD>
</TR>
<TR>
<TD>jsj_JavaObject.c</TD>
<TD>Implementation of the JavaScript JavaObject class.&nbsp;&nbsp; Instances
of JavaObject are used to reflect Java objects, except for Java arrays,
although some of the code in this file is used by the JavaArray code.</TD>
</TR>
<TR>
<TD>jsj_JavaPackage.c</TD>
<TD>Implementation of the JavaScript JavaPackage class.&nbsp;&nbsp; Instances
of JavaPackage are used to reflect Java packages.&nbsp; The JS properties
of a JavaPackage are either nested JavaPackage objects or a JavaClass object.</TD>
</TR>
<TR>
<TD>jsj_JSObject.c</TD>
<TD>Implementation of the native methods for the&nbsp; <I>netscape.javascript.JSObject</I>
Java class, which are used for calling into JavaScript from Java.&nbsp;
It also contains the code that wraps JS objects as instances of&nbsp; <I>netscape.javascript.JSObject
</I>and the code that handles propagation of exceptions both into and out
of Java.</TD>
</TR>
<TR>
<TD>jsj_method.c</TD>
<TD>Reflect Java methods as properties of JavaObject objects and make it
possible to invoke those methods.&nbsp; Includes overloaded method resolution
and argument/return-value conversion code.</TD>
</TR>
<TR>
<TD>jsj_utils.c</TD>
<TD>Low-level utility code fo reporting errors, etc.</TD>
</TR>
</TABLE>
&nbsp;
<BR>&nbsp;
</BODY>
</HTML>

View File

@@ -0,0 +1,56 @@
/* Insert copyright and license here 19** */
package netscape.javascript;
/**
* JSException is an exception which is thrown when JavaScript code
* returns an error.
*/
public
class JSException extends Exception {
String filename;
int lineno;
String source;
int tokenIndex;
/**
* Constructs a JSException without a detail message.
* A detail message is a String that describes this particular exception.
*/
public JSException() {
super();
filename = "unknown";
lineno = 0;
source = "";
tokenIndex = 0;
}
/**
* Constructs a JSException with a detail message.
* A detail message is a String that describes this particular exception.
* @param s the detail message
*/
public JSException(String s) {
super(s);
filename = "unknown";
lineno = 0;
source = "";
tokenIndex = 0;
}
/**
* Constructs a JSException with a detail message and all the
* other info that usually comes with a JavaScript error.
* @param s the detail message
*/
public JSException(String s, String filename, int lineno,
String source, int tokenIndex) {
super(s);
this.filename = filename;
this.lineno = lineno;
this.source = source;
this.tokenIndex = tokenIndex;
}
}

View File

@@ -0,0 +1,131 @@
/* -*- Mode: C; tab-width: 4; -*- */
/* Insert copyright and license here 19** */
/* more doc todo:
* threads
* gc
*
*
*/
package netscape.javascript;
import java.applet.Applet;
/**
* JSObject allows Java to manipulate objects that are
* defined in JavaScript.
* Values passed from Java to JavaScript are converted as
* follows:<ul>
* <li>JSObject is converted to the original JavaScript object
* <li>Any other Java object is converted to a JavaScript wrapper,
* which can be used to access methods and fields of the java object.
* Converting this wrapper to a string will call the toString method
* on the original object, converting to a number will call the
* floatValue method if possible and fail otherwise. Converting
* to a boolean will try to call the booleanValue method in the
* same way.
* <li>Java arrays are wrapped with a JavaScript object that understands
* array.length and array[index]
* <li>A Java boolean is converted to a JavaScript boolean
* <li>Java byte, char, short, int, long, float, and double are converted
* to JavaScript numbers
* </ul>
* Values passed from JavaScript to Java are converted as follows:<ul>
* <li>objects which are wrappers around java objects are unwrapped
* <li>other objects are wrapped with a JSObject
* <li>strings, numbers and booleans are converted to String, Float,
* and Boolean objects respectively
* </ul>
* This means that all JavaScript values show up as some kind
* of java.lang.Object in Java. In order to make much use of them,
* you will have to cast them to the appropriate subclass of Object,
* e.g. <code>(String) window.getMember("name");</code> or
* <code>(JSObject) window.getMember("document");</code>.
*/
public final class JSObject {
/* the internal object data */
private int internal;
/**
* initialize
*/
private static native void initClass();
static {
System.loadLibrary("LiveConnect");
initClass();
}
/**
* it is illegal to construct a JSObject manually
*/
private JSObject(int jsobj_addr) {internal = jsobj_addr;}
/**
* Retrieves a named member of a JavaScript object.
* Equivalent to "this.<i>name</i>" in JavaScript.
*/
public native Object getMember(String name);
/**
* Retrieves an indexed member of a JavaScript object.
* Equivalent to "this[<i>index</i>]" in JavaScript.
*/
// public Object getMember(int index) { return getSlot(index); }
public native Object getSlot(int index);
/**
* Sets a named member of a JavaScript object.
* Equivalent to "this.<i>name</i> = <i>value</i>" in JavaScript.
*/
public native void setMember(String name, Object value);
/**
* Sets an indexed member of a JavaScript object.
* Equivalent to "this[<i>index</i>] = <i>value</i>" in JavaScript.
*/
// public void setMember(int index, Object value) {
// setSlot(index, value);
// }
public native void setSlot(int index, Object value);
/**
* Removes a named member of a JavaScript object.
*/
public native void removeMember(String name);
/**
* Calls a JavaScript method.
* Equivalent to "this.<i>methodName</i>(<i>args</i>[0], <i>args</i>[1], ...)" in JavaScript.
*/
public native Object call(String methodName, Object args[]);
/**
* Evaluates a JavaScript expression. The expression is a string
* of JavaScript source code which will be evaluated in the context
* given by "this".
*/
public native Object eval(String s);
/**
* Converts a JSObject to a String.
*/
public native String toString();
// should use some sort of identifier rather than String
// is "property" the right word?
// native String[] listProperties();
/**
* get a JSObject for the window containing the given applet
*/
public static native JSObject getWindow(Applet applet);
/**
* Finalization decrements the reference count on the corresponding
* JavaScript object.
*/
protected native void finalize();
}

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@@ -0,0 +1,37 @@
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/* ** */
/**
* The JSProxy interface allows applets and plugins to
* share javascript contexts.
*/
package netscape.javascript;
import java.applet.Applet;
public interface JSProxy {
Object getMember(JSObject jso, String name);
Object getSlot(JSObject jso, int index);
void setMember(JSObject jso, String name, Object value);
void setSlot(JSObject jso, int index, Object value);
void removeMember(JSObject jso, String name);
Object call(JSObject jso, String methodName, Object args[]);
Object eval(JSObject jso, String s);
String toString(JSObject jso);
JSObject getWindow(Applet applet);
}

View File

@@ -1,4 +1,4 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
@@ -15,13 +15,24 @@
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/* ** */
#include "nsIEnumerator.idl"
package netscape.javascript;
import java.io.*;
interface nsIFile;
public class JSUtil {
[scriptable, uuid(D7BEA930-59D7-11d3-8C46-00609792278C)]
interface nsIDirectoryEnumerator : nsISimpleEnumerator
{
void Init(in nsIFile parent, in boolean resolveSymlinks);
};
/* Return the stack trace of an exception or error as a String */
public static String getStackTrace(Throwable t) {
ByteArrayOutputStream captureStream;
PrintStream p;
captureStream = new ByteArrayOutputStream();
p = new PrintStream(captureStream);
t.printStackTrace(p);
p.flush();
return captureStream.toString();
}
}

View File

@@ -0,0 +1,737 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1998
* Netscape Communications Corporation. All Rights Reserved.
*/
/*
* This file is part of the Java-vendor-neutral implementation of LiveConnect
*
* It contains the top-level initialization code and the implementation of the
* public API.
*
*/
#include <stdlib.h>
#include <string.h>
#include "prtypes.h"
#include "prassert.h"
#include "prprintf.h"
#include "jsj_private.h" /* LiveConnect internals */
#include "jsjava.h" /* LiveConnect external API */
/* FIXME - The JNI environment should not be a global. It needs to be in thread-local storage. */
JNIEnv *jENV;
/*
* At certain times during initialization, there may be no JavaScript context
* available to direct error reports to, in which case the error messages
* are sent to this function. The caller is responsible for free'ing
* the js_error_msg argument.
*/
static void
report_java_initialization_error(JNIEnv *jEnv, const char *js_error_msg)
{
const char *error_msg, *java_error_msg;
java_error_msg = NULL;
if (jEnv) {
java_error_msg = jsj_GetJavaErrorMessage(jEnv);
(*jEnv)->ExceptionClear(jEnv);
}
if (java_error_msg) {
error_msg = PR_smprintf("initialization error: %s (%s)\n",
js_error_msg, java_error_msg);
free((void*)java_error_msg);
} else {
error_msg = PR_smprintf("initialization error: %s\n",
js_error_msg);
}
jsj_LogError(error_msg);
}
/*
* Opaque JVM handles to Java classes and methods required for Java reflection.
* These are computed and cached at initialization.
*/
jclass jlObject; /* java.lang.Object */
jclass jlrMethod; /* java.lang.reflect.Method */
jclass jlrField; /* java.lang.reflect.Field */
jclass jlVoid; /* java.lang.Void */
jclass jlrConstructor; /* java.lang.reflect.Constructor */
jclass jlThrowable; /* java.lang.Throwable */
jclass jlSystem; /* java.lang.System */
jclass jlClass; /* java.lang.Class */
jclass jlBoolean; /* java.lang.Boolean */
jclass jlDouble; /* java.lang.Double */
jclass jlString; /* java.lang.String */
jclass njJSObject; /* netscape.javascript.JSObject */
jclass njJSException; /* netscape.javascript.JSException */
jclass njJSUtil; /* netscape.javascript.JSUtil */
jmethodID jlClass_getMethods; /* java.lang.Class.getMethods() */
jmethodID jlClass_getConstructors; /* java.lang.Class.getConstructors() */
jmethodID jlClass_getFields; /* java.lang.Class.getFields() */
jmethodID jlClass_getName; /* java.lang.Class.getName() */
jmethodID jlClass_getComponentType; /* java.lang.Class.getComponentType() */
jmethodID jlClass_getModifiers; /* java.lang.Class.getModifiers() */
jmethodID jlClass_isArray; /* java.lang.Class.isArray() */
jmethodID jlrMethod_getName; /* java.lang.reflect.Method.getName() */
jmethodID jlrMethod_getParameterTypes; /* java.lang.reflect.Method.getParameterTypes() */
jmethodID jlrMethod_getReturnType; /* java.lang.reflect.Method.getReturnType() */
jmethodID jlrMethod_getModifiers; /* java.lang.reflect.Method.getModifiers() */
jmethodID jlrConstructor_getParameterTypes; /* java.lang.reflect.Constructor.getParameterTypes() */
jmethodID jlrConstructor_getModifiers; /* java.lang.reflect.Constructor.getModifiers() */
jmethodID jlrField_getName; /* java.lang.reflect.Field.getName() */
jmethodID jlrField_getType; /* java.lang.reflect.Field.getType() */
jmethodID jlrField_getModifiers; /* java.lang.reflect.Field.getModifiers() */
jmethodID jlBoolean_Boolean; /* java.lang.Boolean constructor */
jmethodID jlBoolean_booleanValue; /* java.lang.Boolean.booleanValue() */
jmethodID jlDouble_Double; /* java.lang.Double constructor */
jmethodID jlDouble_doubleValue; /* java.lang.Double.doubleValue() */
jmethodID jlThrowable_toString; /* java.lang.Throwable.toString() */
jmethodID jlThrowable_getMessage; /* java.lang.Throwable.getMessage() */
jmethodID jlSystem_identityHashCode; /* java.lang.System.identityHashCode() */
jobject jlVoid_TYPE; /* java.lang.Void.TYPE value */
jmethodID njJSException_JSException; /* netscape.javascript.JSexception constructor */
jmethodID njJSObject_JSObject; /* netscape.javascript.JSObject constructor */
jmethodID njJSUtil_getStackTrace; /* netscape.javascript.JSUtil.getStackTrace() */
jfieldID njJSObject_internal; /* netscape.javascript.JSObject.internal */
jfieldID njJSException_lineno; /* netscape.javascript.JSException.lineno */
jfieldID njJSException_tokenIndex; /* netscape.javascript.JSException.tokenIndex */
jfieldID njJSException_source; /* netscape.javascript.JSException.source */
jfieldID njJSException_filename; /* netscape.javascript.JSException.filename */
/* Obtain a reference to a Java class */
#define LOAD_CLASS(qualified_name, class) \
{ \
jclass _##class = (*jEnv)->FindClass(jEnv, #qualified_name); \
if (_##class == 0) { \
report_java_initialization_error(jEnv, \
"Can't load class " #qualified_name); \
return JS_FALSE; \
} \
class = (*jEnv)->NewGlobalRef(jEnv, _##class); \
}
/* Obtain a methodID reference to a Java method or constructor */
#define _LOAD_METHOD(qualified_class, method, mvar, signature, class, is_static)\
if (is_static) { \
class##_##mvar = \
(*jEnv)->GetStaticMethodID(jEnv, class, #method, signature); \
} else { \
class##_##mvar = \
(*jEnv)->GetMethodID(jEnv, class, #method, signature); \
} \
if (class##_##mvar == 0) { \
report_java_initialization_error(jEnv, \
"Can't get mid for " #qualified_class "." #method "()"); \
return JS_FALSE; \
}
/* Obtain a methodID reference to a Java instance method */
#define LOAD_METHOD(qualified_class, method, signature, class) \
_LOAD_METHOD(qualified_class, method, method, signature, class, JS_FALSE)
/* Obtain a methodID reference to a Java static method */
#define LOAD_STATIC_METHOD(qualified_class, method, signature, class) \
_LOAD_METHOD(qualified_class, method, method, signature, class, JS_TRUE)
/* Obtain a methodID reference to a Java constructor */
#define LOAD_CONSTRUCTOR(qualified_class, method, signature, class) \
_LOAD_METHOD(qualified_class,<init>, method, signature, class, JS_FALSE)
/* Obtain a fieldID reference to a Java instance or static field */
#define _LOAD_FIELDID(qualified_class, field, signature, class, is_static) \
if (is_static) { \
class##_##field = (*jEnv)->GetStaticFieldID(jEnv, class, #field, signature);\
} else { \
class##_##field = (*jEnv)->GetFieldID(jEnv, class, #field, signature);\
} \
if (class##_##field == 0) { \
report_java_initialization_error(jEnv, \
"Can't get fid for " #qualified_class "." #field); \
return JS_FALSE; \
}
/* Obtain a fieldID reference to a Java instance field */
#define LOAD_FIELDID(qualified_class, field, signature, class) \
_LOAD_FIELDID(qualified_class, field, signature, class, JS_FALSE)
/* Obtain the value of a static field in a Java class */
#define LOAD_FIELD_VAL(qualified_class, field, signature, class, type) \
{ \
jfieldID field_id; \
field_id = (*jEnv)->GetStaticFieldID(jEnv, class, #field, signature);\
if (field_id == 0) { \
report_java_initialization_error(jEnv, \
"Can't get fid for " #qualified_class "." #field); \
return JS_FALSE; \
} \
class##_##field = \
(*jEnv)->GetStatic##type##Field(jEnv, class, field_id); \
if (class##_##field == 0) { \
report_java_initialization_error(jEnv, \
"Can't read static field " #qualified_class "." #field); \
return JS_FALSE; \
} \
}
/* Obtain the value of a static field in a Java class, which is known to
contain an object value. */
#define LOAD_FIELD_OBJ(qualified_class, field, signature, class) \
LOAD_FIELD_VAL(qualified_class, field, signature, class, Object); \
class##_##field = (*jEnv)->NewGlobalRef(jEnv, class##_##field);
/*
* Load the Java classes, and the method and field descriptors required for Java reflection.
* Returns JS_TRUE on success, JS_FALSE on failure.
*/
static JSBool
init_java_VM_reflection(JSJavaVM *jsjava_vm, JNIEnv *jEnv)
{
/* Load Java system classes and method, including java.lang.reflect classes */
LOAD_CLASS(java/lang/Object, jlObject);
LOAD_CLASS(java/lang/Class, jlClass);
LOAD_CLASS(java/lang/reflect/Method, jlrMethod);
LOAD_CLASS(java/lang/reflect/Constructor, jlrConstructor);
LOAD_CLASS(java/lang/reflect/Field, jlrField);
LOAD_CLASS(java/lang/Throwable, jlThrowable);
LOAD_CLASS(java/lang/System, jlSystem);
LOAD_CLASS(java/lang/Boolean, jlBoolean);
LOAD_CLASS(java/lang/Double, jlDouble);
LOAD_CLASS(java/lang/String, jlString);
LOAD_CLASS(java/lang/Void, jlVoid);
LOAD_METHOD(java.lang.Class, getMethods, "()[Ljava/lang/reflect/Method;",jlClass);
LOAD_METHOD(java.lang.Class, getConstructors, "()[Ljava/lang/reflect/Constructor;",jlClass);
LOAD_METHOD(java.lang.Class, getFields, "()[Ljava/lang/reflect/Field;", jlClass);
LOAD_METHOD(java.lang.Class, getName, "()Ljava/lang/String;", jlClass);
LOAD_METHOD(java.lang.Class, isArray, "()Z", jlClass);
LOAD_METHOD(java.lang.Class, getComponentType, "()Ljava/lang/Class;", jlClass);
LOAD_METHOD(java.lang.Class, getModifiers, "()I", jlClass);
LOAD_METHOD(java.lang.reflect.Method, getName, "()Ljava/lang/String;", jlrMethod);
LOAD_METHOD(java.lang.reflect.Method, getParameterTypes, "()[Ljava/lang/Class;", jlrMethod);
LOAD_METHOD(java.lang.reflect.Method, getReturnType, "()Ljava/lang/Class;", jlrMethod);
LOAD_METHOD(java.lang.reflect.Method, getModifiers, "()I", jlrMethod);
LOAD_METHOD(java.lang.reflect.Constructor, getParameterTypes, "()[Ljava/lang/Class;", jlrConstructor);
LOAD_METHOD(java.lang.reflect.Constructor, getModifiers, "()I", jlrConstructor);
LOAD_METHOD(java.lang.reflect.Field, getName, "()Ljava/lang/String;", jlrField);
LOAD_METHOD(java.lang.reflect.Field, getType, "()Ljava/lang/Class;", jlrField);
LOAD_METHOD(java.lang.reflect.Field, getModifiers, "()I", jlrField);
LOAD_METHOD(java.lang.Throwable, toString, "()Ljava/lang/String;", jlThrowable);
LOAD_METHOD(java.lang.Throwable, getMessage, "()Ljava/lang/String;", jlThrowable);
LOAD_METHOD(java.lang.Double, doubleValue, "()D", jlDouble);
LOAD_METHOD(java.lang.Boolean, booleanValue, "()Z", jlBoolean);
LOAD_STATIC_METHOD(java.lang.System, identityHashCode, "(Ljava/lang/Object;)I", jlSystem);
LOAD_CONSTRUCTOR(java.lang.Boolean, Boolean, "(Z)V", jlBoolean);
LOAD_CONSTRUCTOR(java.lang.Double, Double, "(D)V", jlDouble);
LOAD_FIELD_OBJ(java.lang.Void, TYPE, "Ljava/lang/Class;", jlVoid);
}
/* Load Netscape-specific Java extension classes, methods, and fields */
static JSBool
init_netscape_java_classes(JSJavaVM *jsjava_vm, JNIEnv *jEnv)
{
LOAD_CLASS(netscape/javascript/JSObject, njJSObject);
LOAD_CLASS(netscape/javascript/JSException, njJSException);
LOAD_CLASS(netscape/javascript/JSUtil, njJSUtil);
LOAD_CONSTRUCTOR(netscape.javascript.JSObject,
JSObject, "(I)V", njJSObject);
LOAD_CONSTRUCTOR(netscape.javascript.JSException,
JSException, "(Ljava/lang/String;Ljava/lang/String;ILjava/lang/String;I)V",
njJSException);
LOAD_FIELDID(netscape.javascript.JSObject,
internal, "I", njJSObject);
LOAD_FIELDID(netscape.javascript.JSException,
lineno, "I", njJSException);
LOAD_FIELDID(netscape.javascript.JSException,
tokenIndex, "I", njJSException);
LOAD_FIELDID(netscape.javascript.JSException,
source, "Ljava/lang/String;", njJSException);
LOAD_FIELDID(netscape.javascript.JSException,
filename, "Ljava/lang/String;", njJSException);
LOAD_STATIC_METHOD(netscape.javascript.JSUtil,
getStackTrace, "(Ljava/lang/Throwable;)Ljava/lang/String;",
njJSUtil);
return JS_TRUE;
}
JSJavaVM *jsjava_vm_list = NULL;
/*
* Called once per Java VM, this function initializes the classes, fields, and
* methods required for Java reflection. If java_vm is NULL, a new Java VM is
* created, using the provided classpath in addition to any default classpath.
* The classpath argument is ignored, however, if java_vm_arg is non-NULL.
*/
JSJavaVM *
JSJ_ConnectToJavaVM(JavaVM *java_vm_arg, const char *user_classpath)
{
JavaVM *java_vm;
JSJavaVM *jsjava_vm;
const char *full_classpath;
jsjava_vm = (JSJavaVM*)malloc(sizeof(JSJavaVM));
if (!jsjava_vm)
return NULL;
memset(jsjava_vm, 0, sizeof(JSJavaVM));
java_vm = java_vm_arg;
/* If a Java VM was passed in, try to attach to it on the current thread. */
if (java_vm) {
if ((*java_vm)->AttachCurrentThread(java_vm, &jENV, NULL) < 0) {
jsj_LogError("Failed to attach to Java VM thread\n");
free(jsjava_vm);
return NULL;
}
} else {
/* No Java VM supplied, so create our own */
JDK1_1InitArgs vm_args;
/* Magic constant indicates JRE version 1.1 */
vm_args.version = 0x00010001;
JNI_GetDefaultJavaVMInitArgs(&vm_args);
/* Prepend the classpath argument to the default JVM classpath */
if (user_classpath) {
full_classpath = PR_smprintf("%s;%s", user_classpath, vm_args.classpath);
if (!full_classpath) {
free(jsjava_vm);
return NULL;
}
vm_args.classpath = (char*)full_classpath;
}
/* Attempt to create our own VM */
if (JNI_CreateJavaVM(&java_vm, &jENV, &vm_args) < 0) {
jsj_LogError("Failed to create Java VM\n");
free(jsjava_vm);
return NULL;
}
/* Remember that we created the VM so that we know to destroy it later */
jsjava_vm->jsj_created_java_vm = JS_TRUE;
}
jsjava_vm->java_vm = java_vm;
jsjava_vm->main_thread_env = jENV;
/* Load the Java classes, and the method and field descriptors required for
Java reflection. */
if (!init_java_VM_reflection(jsjava_vm, jENV)) {
JSJ_DisconnectFromJavaVM(jsjava_vm);
return NULL;
}
/*
* JVM initialization for netscape.javascript.JSObject is performed
* independently of the other classes that are initialized in
* init_java_VM_reflection, because we allow it to fail. In the case
* of failure, LiveConnect is still operative, but only when calling
* from JS to Java and not vice-versa.
*/
init_netscape_java_classes(jsjava_vm, jENV);
/* Put this VM on the list of all created VMs */
jsjava_vm->next = jsjava_vm_list;
jsjava_vm_list = jsjava_vm;
return jsjava_vm;
}
JSJCallbacks *JSJ_callbacks = NULL;
/* Called once to set up callbacks for all instances of LiveConnect */
void
JSJ_Init(JSJCallbacks *callbacks)
{
PR_ASSERT(callbacks);
JSJ_callbacks = callbacks;
}
/*
* Initialize the provided JSContext by setting up the JS classes necessary for
* reflection and by defining JavaPackage objects for the default Java packages
* as properties of global_obj. Additional packages may be pre-defined by
* setting the predefined_packages argument. (Pre-defining a Java package at
* initialization time is not necessary, but it will make package lookup faster
* and, more importantly, will avoid unnecessary network accesses if classes
* are being loaded over the network.)
*/
JSJ_InitJSContext(JSContext *cx, JSObject *global_obj,
JavaPackageDef *predefined_packages)
{
/* Initialize the JavaScript classes used for reflection */
if (!jsj_init_JavaObject(cx, global_obj))
return JS_FALSE;
/* if (!jsj_init_JavaMember(cx, global_obj))
return JS_FALSE; */
if (!jsj_init_JavaPackage(cx, global_obj, predefined_packages))
return JS_FALSE;
if (!jsj_init_JavaClass(cx, global_obj))
return JS_FALSE;
if (!jsj_init_JavaArray(cx, global_obj))
return JS_FALSE;
return JS_TRUE;
}
/* Obtain a reference to a Java class */
#define UNLOAD_CLASS(qualified_name, class) \
if (class) { \
(*jENV)->DeleteGlobalRef(jENV, class); \
class = NULL; \
}
/*
* This routine severs the connection to a Java VM, freeing all related resources.
* It shouldn't be called until the global scope has been cleared in all related
* JSContexts (so that all LiveConnect objects are finalized) and a JavaScript
* GC is performed. Otherwise, accessed to free'ed memory could result.
*/
void
JSJ_DisconnectFromJavaVM(JSJavaVM *jsjava_vm)
{
/* FIXME - Clean up the various hash tables */
if (jsjava_vm->jsj_created_java_vm) {
JavaVM *java_vm = jsjava_vm->java_vm;
(*java_vm)->DestroyJavaVM(java_vm);
} else {
UNLOAD_CLASS(java/lang/Object, jlObject);
UNLOAD_CLASS(java/lang/Class, jlClass);
UNLOAD_CLASS(java/lang/reflect/Method, jlrMethod);
UNLOAD_CLASS(java/lang/reflect/Constructor, jlrConstructor);
UNLOAD_CLASS(java/lang/reflect/Field, jlrField);
UNLOAD_CLASS(java/lang/Throwable, jlThrowable);
UNLOAD_CLASS(java/lang/System, jlSystem);
UNLOAD_CLASS(java/lang/Boolean, jlBoolean);
UNLOAD_CLASS(java/lang/Double, jlDouble);
UNLOAD_CLASS(java/lang/String, jlString);
UNLOAD_CLASS(java/lang/Void, jlVoid);
UNLOAD_CLASS(netscape/javascript/JSObject, njJSObject);
UNLOAD_CLASS(netscape/javascript/JSException, njJSException);
UNLOAD_CLASS(netscape/javascript/JSUtil, njJSUtil);
}
}
static JSJavaThreadState *thread_list = NULL;
static JSJavaThreadState *
new_jsjava_thread_state(JSJavaVM *jsjava_vm, const char *thread_name, JNIEnv *jEnv)
{
JSJavaThreadState *jsj_env;
jsj_env = (JSJavaThreadState *)malloc(sizeof(JSJavaThreadState));
if (!jsj_env)
return NULL;
memset(jsj_env, 0, sizeof(JSJavaThreadState));
jsj_env->jEnv = jEnv;
jsj_env->jsjava_vm = jsjava_vm;
if (thread_name)
jsj_env->name = strdup(thread_name);
/* FIXME - need to protect against races */
jsj_env->next = thread_list;
thread_list = jsj_env;
return jsj_env;
}
static JSJavaThreadState *
find_jsjava_thread(JNIEnv *jEnv)
{
JSJavaThreadState *e, **p, *jsj_env;
jsj_env = NULL;
/* FIXME - need to protect against races in manipulating the thread list */
/* Search for the thread state among the list of all created
LiveConnect threads */
for (p=&thread_list; e = *p; p = &(e->next)) {
if (e->jEnv == jEnv) {
jsj_env = e;
*p = jsj_env->next;
break;
}
}
/* Move a found thread to head of list for faster search next time. */
if (jsj_env)
thread_list = jsj_env;
return jsj_env;
}
PR_PUBLIC_API(JSJavaThreadState *)
JSJ_AttachCurrentThreadToJava(JSJavaVM *jsjava_vm, const char *name, JNIEnv **java_envp)
{
JNIEnv *jEnv;
JavaVM *java_vm;
JSJavaThreadState *jsj_env;
/* Try to attach a Java thread to the current native thread */
java_vm = jsjava_vm->java_vm;
if ((*java_vm)->AttachCurrentThread(java_vm, &jEnv, NULL) < 0)
return NULL;
/* If we found an existing thread state, just return it. */
jsj_env = find_jsjava_thread(jEnv);
if (jsj_env)
return jsj_env;
/* Create a new wrapper around the thread/VM state */
jsj_env = new_jsjava_thread_state(jsjava_vm, name, jEnv);
if (java_envp)
*java_envp = jEnv;
return jsj_env;
}
static JSJavaVM *
map_java_vm_to_jsjava_vm(JavaVM *java_vm)
{
JSJavaVM *v;
for (v = jsjava_vm_list; v; v = v->next) {
if (v->java_vm == java_vm)
return v;
}
return NULL;
}
/*
* Unfortunately, there's no standard means to associate any private data with
* a JNI thread environment, so we need to use the Java environment pointer as
* the key in a lookup table that maps it to a JSJavaThreadState structure,
* where we store all our per-thread private data. If no existing thread state
* is found, a new one is created.
*
* If an error occurs, returns NULL and sets the errp argument to an error
* message, which the caller is responsible for free'ing.
*/
JSJavaThreadState *
jsj_MapJavaThreadToJSJavaThreadState(JNIEnv *jEnv, char **errp)
{
JSJavaThreadState *jsj_env;
JavaVM *java_vm;
JSJavaVM *jsjava_vm;
/* If we found an existing thread state, just return it. */
jsj_env = find_jsjava_thread(jEnv);
if (jsj_env)
return jsj_env;
/* No one set up a LiveConnect thread state for a given Java thread.
Invoke the callback to create one on-the-fly. */
/* First, figure out which Java VM is calling us */
if ((*jEnv)->GetJavaVM(jEnv, &java_vm) < 0)
return NULL;
/* Get our private JavaVM data */
jsjava_vm = map_java_vm_to_jsjava_vm(java_vm);
if (!jsjava_vm) {
*errp = PR_smprintf("Total weirdness: No JSJavaVM wrapper ever created "
"for JavaVM 0x%08x", java_vm);
return NULL;
}
jsj_env = new_jsjava_thread_state(jsjava_vm, NULL, jEnv);
if (!jsj_env)
return NULL;
return jsj_env;
}
/*
* This function is used to specify a particular JSContext as *the* JavaScript
* execution environment to be used when LiveConnect is accessed from the given
* Java thread, i.e. by using one of the methods of netscape.javascript.JSObject.
* (There can only be one such JS context for a given Java thread. To
* multiplex JSContexts among a single thread, this function must be called
* before Java is invoked on that thread.) The return value is the previous
* context associated with the given Java thread.
*/
PR_PUBLIC_API(JSContext *)
JSJ_SetDefaultJSContextForJavaThread(JSContext *cx, JSJavaThreadState *jsj_env)
{
JSContext *old_context;
old_context = jsj_env->cx;
jsj_env->cx = cx;
return old_context;
}
PR_PUBLIC_API(JSBool)
JSJ_DetachCurrentThreadFromJava(JSJavaThreadState *jsj_env)
{
JavaVM *java_vm;
JSJavaThreadState *e, **p;
/* Disassociate the current native thread from its corresponding Java thread */
java_vm = jsj_env->jsjava_vm->java_vm;
if ((*java_vm)->DetachCurrentThread(java_vm) < 0)
return JS_FALSE;
/* Destroy the LiveConnect execution environment passed in */
jsj_ClearPendingJSErrors(jsj_env);
/* FIXME - need to protect against races */
for (p=&thread_list; e = *p; p = &(e->next)) {
if (e == jsj_env) {
*p = jsj_env->next;
break;
}
}
free(jsj_env);
return JS_TRUE;
}
JSBool
JSJ_ConvertJavaObjectToJSValue(JSContext *cx, jobject java_obj, jsval *vp)
{
JNIEnv *jEnv;
/* Get the Java per-thread environment pointer for this JSContext */
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
jsj_ConvertJavaObjectToJSValue(cx, jEnv, java_obj, vp);
}
/*===========================================================================*/
/* The convenience functions below present a complete, but simplified
LiveConnect API which is designed to handle the special case of a single
Java-VM, single-threaded operation, and use of only one JSContext. */
/* We can get away with global variables in our single-threaded,
single-JSContext case. */
static JSJavaVM * the_jsj_vm = NULL;
static JSContext * the_cx = NULL;
static JSJavaThreadState * the_jsj_thread = NULL;
static JSObject * the_global_js_obj = NULL;
/* Trivial implementation of callback function */
static JSJavaThreadState *
default_map_js_context_to_jsj_thread(JSContext *cx, char **errp)
{
return the_jsj_thread;
}
/* Trivial implementation of callback function */
static JSContext *
default_map_jsj_thread_to_js_context(JSJavaThreadState *jsj_env, char **errp)
{
return the_cx;
}
/* Trivial implementation of callback function */
JSObject *
default_map_java_object_to_js_object(JNIEnv *jEnv, jobject hint, char **errp)
{
return the_global_js_obj;
}
/* Trivial implementations of callback functions */
JSJCallbacks jsj_default_callbacks = {
default_map_jsj_thread_to_js_context,
default_map_js_context_to_jsj_thread,
default_map_java_object_to_js_object
};
/*
* Initialize the provided JSContext by setting up the JS classes necessary for
* reflection and by defining JavaPackage objects for the default Java packages
* as properties of global_obj. If java_vm is NULL, a new Java VM is
* created, using the provided classpath in addition to any default classpath.
* The classpath argument is ignored, however, if java_vm is non-NULL.
*/
JSBool
JSJ_SimpleInit(JSContext *cx, JSObject *global_obj, JavaVM *java_vm, const char *classpath)
{
PR_ASSERT(!the_jsj_vm);
the_jsj_vm = JSJ_ConnectToJavaVM(java_vm, classpath);
if (!the_jsj_vm)
return JS_FALSE;
JSJ_Init(&jsj_default_callbacks);
if (!JSJ_InitJSContext(cx, global_obj, NULL))
goto error;
the_cx = cx;
the_global_js_obj = global_obj;
the_jsj_thread = JSJ_AttachCurrentThreadToJava(the_jsj_vm, "main thread", &jENV);
if (!the_jsj_thread)
goto error;
return JS_TRUE;
error:
JSJ_SimpleShutdown();
return JS_FALSE;
}
/*
* Free up all LiveConnect resources. Destroy the Java VM if it was
* created by LiveConnect.
*/
PR_PUBLIC_API(void)
JSJ_SimpleShutdown()
{
PR_ASSERT(the_jsj_vm);
JSJ_DisconnectFromJavaVM(the_jsj_vm);
the_jsj_vm = NULL;
the_cx = NULL;
the_global_js_obj = NULL;
the_jsj_thread = NULL;
}

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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1998
* Netscape Communications Corporation. All Rights Reserved.
*/
/*
* This file is part of the Java-vendor-neutral implementation of LiveConnect
*
* It contains the definition of the JavaScript JavaArray class.
* Instances of JavaArray are used to reflect Java arrays.
*/
#include <stdlib.h>
#include <string.h>
#include "prassert.h"
#include "jsj_private.h" /* LiveConnect internals */
static JSBool
access_java_array_element(JSContext *cx,
JNIEnv *jEnv,
JSObject *obj,
jsid id,
jsval *vp,
JSBool do_assignment)
{
jsval idval;
jarray java_array;
JavaClassDescriptor *class_descriptor;
JavaObjectWrapper *java_wrapper;
jsize array_length, index;
JavaSignature *array_component_signature;
/* printf("In JavaArray_getProperty\n"); */
java_wrapper = JS_GetPrivate(cx, obj);
if (!java_wrapper) {
const char *property_name;
if (JS_IdToValue(cx, id, &idval) && JSVAL_IS_STRING(idval) &&
(property_name = JS_GetStringBytes(JSVAL_TO_STRING(idval)))) {
if (!strcmp(property_name, "constructor")) {
*vp = JSVAL_VOID;
return JS_TRUE;
}
}
JS_ReportError(cx, "illegal operation on JavaArray prototype object");
return JS_FALSE;
}
class_descriptor = java_wrapper->class_descriptor;
java_array = java_wrapper->java_obj;
PR_ASSERT(class_descriptor->type == JAVA_SIGNATURE_ARRAY);
JS_IdToValue(cx, id, &idval);
if (!JSVAL_IS_INT(idval)) {
/*
* Usually, properties of JavaArray objects are indexed by integers, but
* Java arrays also inherit all the methods of java.lang.Object, so a
* string-valued property is also possible.
*/
if (JSVAL_IS_STRING(idval)) {
const char *member_name;
member_name = JS_GetStringBytes(JSVAL_TO_STRING(idval));
if (do_assignment) {
JS_ReportError(cx, "Attempt to write to invalid Java array "
"element \"%s\"", member_name);
return JS_FALSE;
} else {
if (!strcmp(member_name, "length")) {
array_length = jsj_GetJavaArrayLength(cx, jEnv, java_array);
if (array_length < 0)
return JS_FALSE;
if (vp)
*vp = INT_TO_JSVAL(array_length);
return JS_TRUE;
}
/* Check to see if we're reflecting a Java array method */
return JavaObject_getPropertyById(cx, obj, id, vp);
}
}
JS_ReportError(cx, "invalid Java array index expression");
return JS_FALSE;
}
index = JSVAL_TO_INT(idval);
#if 0
array_length = jsj_GetJavaArrayLength(cx, jEnv, java_array);
if (array_length < 0)
return JS_FALSE;
/* Just let Java throw an exception instead of checking array bounds here */
if (index < 0 || index >= array_length) {
JS_ReportError(cx, "Java array index %d out of range", index);
return JS_FALSE;
}
#endif
array_component_signature = class_descriptor->array_component_signature;
if (!vp)
return JS_TRUE;
if (do_assignment) {
return jsj_SetJavaArrayElement(cx, jEnv, java_array, index,
array_component_signature, *vp);
} else {
return jsj_GetJavaArrayElement(cx, jEnv, java_array, index,
array_component_signature, vp);
}
}
PR_STATIC_CALLBACK(JSBool)
JavaArray_getPropertyById(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
{
JNIEnv *jEnv;
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
return access_java_array_element(cx, jEnv, obj, id, vp, JS_FALSE);
}
PR_STATIC_CALLBACK(JSBool)
JavaArray_setPropertyById(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
{
JNIEnv *jEnv;
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
return access_java_array_element(cx, jEnv, obj, id, vp, JS_TRUE);
}
static JSBool
JavaArray_lookupProperty(JSContext *cx, JSObject *obj, jsid id,
JSObject **objp, JSProperty **propp
#if defined JS_THREADSAFE && defined DEBUG
, const char *file, uintN line
#endif
)
{
JNIEnv *jEnv;
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
return access_java_array_element(cx, jEnv, obj, id, NULL, JS_FALSE);
}
static JSBool
JavaArray_defineProperty(JSContext *cx, JSObject *obj, jsid id, jsval value,
JSPropertyOp getter, JSPropertyOp setter,
uintN attrs, JSProperty **propp)
{
JS_ReportError(cx, "Elements of JavaArray objects may not be deleted");
return JS_FALSE;
}
static JSBool
JavaArray_getAttributes(JSContext *cx, JSObject *obj, jsid id,
JSProperty *prop, uintN *attrsp)
{
/* We don't maintain JS property attributes for Java class members */
*attrsp = JSPROP_PERMANENT|JSPROP_ENUMERATE;
return JS_FALSE;
}
static JSBool
JavaArray_setAttributes(JSContext *cx, JSObject *obj, jsid id,
JSProperty *prop, uintN *attrsp)
{
/* We don't maintain JS property attributes for Java class members */
if (*attrsp != JSPROP_PERMANENT|JSPROP_ENUMERATE) {
PR_ASSERT(0);
return JS_FALSE;
}
/* Silently ignore all setAttribute attempts */
return JS_TRUE;
}
static JSBool
JavaArray_deleteProperty(JSContext *cx, JSObject *obj, jsid id, jsval *vp)
{
JS_ReportError(cx, "Elements of JavaArray objects may not be deleted");
return JS_FALSE;
}
static JSBool
JavaArray_defaultValue(JSContext *cx, JSObject *obj, JSType type, jsval *vp)
{
/* printf("In JavaArray_defaultValue()\n"); */
return JavaObject_convert(cx, obj, JSTYPE_STRING, vp);
}
static JSBool
JavaArray_newEnumerate(JSContext *cx, JSObject *obj, JSIterateOp enum_op,
jsval *statep, jsid *idp)
{
JavaObjectWrapper *java_wrapper;
JNIEnv *jEnv;
jsize array_length, index;
java_wrapper = JS_GetPrivate(cx, obj);
/* Check for prototype object */
if (!java_wrapper) {
*statep = JSVAL_NULL;
if (idp)
*idp = INT_TO_JSVAL(0);
return JS_TRUE;
}
/* Get the Java per-thread environment pointer for this JSContext */
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
array_length = jsj_GetJavaArrayLength(cx, jEnv, java_wrapper->java_obj);
if (array_length < 0)
return JS_FALSE;
switch(enum_op) {
case JSENUMERATE_INIT:
*statep = INT_TO_JSVAL(0);
if (idp)
*idp = INT_TO_JSVAL(array_length);
return JS_TRUE;
case JSENUMERATE_NEXT:
index = JSVAL_TO_INT(*statep);
if (index < array_length) {
JS_ValueToId(cx, INT_TO_JSVAL(index), idp);
index++;
*statep = INT_TO_JSVAL(index);
return JS_TRUE;
}
/* Fall through ... */
case JSENUMERATE_DESTROY:
*statep = JSVAL_NULL;
return JS_TRUE;
default:
PR_ASSERT(0);
return JS_FALSE;
}
}
static JSBool
JavaArray_checkAccess(JSContext *cx, JSObject *obj, jsid id,
JSAccessMode mode, jsval *vp, uintN *attrsp)
{
switch (mode) {
case JSACC_WATCH:
JS_ReportError(cx, "Cannot place watchpoints on JavaArray object properties");
return JS_FALSE;
case JSACC_IMPORT:
JS_ReportError(cx, "Cannot export a JavaArray object's properties");
return JS_FALSE;
default:
return JS_TRUE;
}
}
JSObjectOps JavaArray_ops = {
/* Mandatory non-null function pointer members. */
NULL, /* newObjectMap */
NULL, /* destroyObjectMap */
JavaArray_lookupProperty,
JavaArray_defineProperty,
JavaArray_getPropertyById, /* getProperty */
JavaArray_setPropertyById, /* setProperty */
JavaArray_getAttributes,
JavaArray_setAttributes,
JavaArray_deleteProperty,
JavaArray_defaultValue,
JavaArray_newEnumerate,
JavaArray_checkAccess,
/* Optionally non-null members start here. */
NULL, /* thisObject */
NULL, /* dropProperty */
NULL, /* call */
NULL, /* construct */
NULL, /* xdrObject */
NULL /* hasInstance */
};
JSObjectOps *
JavaArray_getObjectOps(JSContext *cx, JSClass *clazz)
{
return &JavaArray_ops;
}
JSClass JavaArray_class = {
"JavaArray", JSCLASS_HAS_PRIVATE,
NULL, NULL, NULL, NULL,
NULL, NULL, JavaObject_convert, JavaObject_finalize,
JavaArray_getObjectOps,
};
extern PR_IMPORT_DATA(JSObjectOps) js_ObjectOps;
/* Initialize the JS JavaArray class */
JSBool
jsj_init_JavaArray(JSContext *cx, JSObject *global_obj)
{
JavaArray_ops.newObjectMap = js_ObjectOps.newObjectMap;
JavaArray_ops.destroyObjectMap = js_ObjectOps.destroyObjectMap;
if (!JS_InitClass(cx, global_obj,
0, &JavaArray_class, 0, 0,
0, 0, 0, 0))
return JS_FALSE;
return JS_TRUE;
}

View File

@@ -0,0 +1,572 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1998
* Netscape Communications Corporation. All Rights Reserved.
*/
/* This file is part of the Java-vendor-neutral implementation of LiveConnect
*
* It contains the native code implementation of JS's JavaClass class.
*
* A JavaClass is JavaScript's representation of a Java class.
* Its parent JS object is always a JavaPackage object. A JavaClass is not an
* exact reflection of Java's corresponding java.lang.Class object. Rather,
* the properties of a JavaClass are the static methods and properties of the
* corresponding Java class.
*
* Note that there is no runtime equivalent to the JavaClass class in Java.
* (Although there are instances of java.lang.String and there are static
* methods of java.lang.String that can be invoked, there's no such thing as
* a first-class object that can be referenced simply as "java.lang.String".)
*/
#include <stdlib.h>
#include <string.h>
#include "prtypes.h"
#include "prprintf.h"
#include "prassert.h"
#include "jsj_private.h" /* LiveConnect internals */
static JSBool
JavaClass_convert(JSContext *cx, JSObject *obj, JSType type, jsval *vp)
{
char *name;
JSString *str;
JavaClassDescriptor *class_descriptor;
class_descriptor = JS_GetPrivate(cx, obj);
if (!class_descriptor)
return JS_FALSE;
switch(type) {
case JSTYPE_STRING:
/* Convert '/' to '.' so that it looks like Java language syntax. */
if (!class_descriptor->name)
break;
name = PR_smprintf("[JavaClass %s]", class_descriptor->name);
if (!name) {
JS_ReportOutOfMemory(cx);
return JS_FALSE;
}
str = JS_NewString(cx, name, strlen(name));
if (!str) {
free(name);
/* It's not necessary to call JS_ReportOutOfMemory(), as
JS_NewString() will do so on failure. */
return JS_FALSE;
}
*vp = STRING_TO_JSVAL(str);
return JS_TRUE;
default:
return JS_TRUE;
}
}
static JSBool
lookup_static_member_by_id(JSContext *cx, JNIEnv *jEnv, JSObject *obj,
JavaClassDescriptor **class_descriptorp,
jsid id, JavaMemberDescriptor **memberp)
{
jsval idval;
JavaMemberDescriptor *member_descriptor;
const char *member_name;
JavaClassDescriptor *class_descriptor;
class_descriptor = JS_GetPrivate(cx, obj);
if (!class_descriptor) {
*class_descriptorp = NULL;
*memberp = NULL;
return JS_TRUE;
}
if (class_descriptorp)
*class_descriptorp = class_descriptor;
member_descriptor = jsj_LookupJavaStaticMemberDescriptorById(cx, jEnv, class_descriptor, id);
if (!member_descriptor) {
JS_IdToValue(cx, id, &idval);
if (!JSVAL_IS_STRING(idval)) {
JS_ReportError(cx, "invalid JavaClass property expression. "
"(methods and fields of a JavaClass object can only be identified by their name)");
return JS_FALSE;
}
member_name = JS_GetStringBytes(JSVAL_TO_STRING(idval));
/* Why do we have to do this ? */
if (!strcmp(member_name, "prototype")) {
*memberp = NULL;
return JS_TRUE;
}
JS_ReportError(cx, "Java class %s has no public static field or method named \"%s\"",
class_descriptor->name, member_name);
return JS_FALSE;
}
if (memberp)
*memberp = member_descriptor;
return JS_TRUE;
}
PR_STATIC_CALLBACK(JSBool)
JavaClass_getPropertyById(JSContext *cx, JSObject *obj, jsid id, jsval *vp)
{
jsval idval;
jclass java_class;
const char *member_name;
JavaClassDescriptor *class_descriptor;
JavaMemberDescriptor *member_descriptor;
JNIEnv *jEnv;
/* printf("In JavaClass_getProperty\n"); */
/* Get the Java per-thread environment pointer for this JSContext */
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
if (!lookup_static_member_by_id(cx, jEnv, obj, &class_descriptor, id, &member_descriptor))
return JS_FALSE;
if (!member_descriptor) {
*vp = JSVAL_VOID;
return JS_TRUE;
}
java_class = class_descriptor->java_class;
if (member_descriptor->field) {
if (!member_descriptor->methods) {
return jsj_GetJavaFieldValue(cx, jEnv, member_descriptor->field, java_class, vp);
} else {
PR_ASSERT(0);
}
} else {
JSFunction *function;
/* FIXME - eliminate JSFUN_BOUND_METHOD */
JS_IdToValue(cx, id, &idval);
member_name = JS_GetStringBytes(JSVAL_TO_STRING(idval));
function = JS_NewFunction(cx, jsj_JavaStaticMethodWrapper, 0,
JSFUN_BOUND_METHOD, obj, member_name);
if (!function)
return JS_FALSE;
*vp = OBJECT_TO_JSVAL(JS_GetFunctionObject(function));
return JS_TRUE;
}
}
PR_STATIC_CALLBACK(JSBool)
JavaClass_setPropertyById(JSContext *cx, JSObject *obj, jsid id, jsval *vp)
{
jclass java_class;
const char *member_name;
JavaClassDescriptor *class_descriptor;
JavaMemberDescriptor *member_descriptor;
jsval idval;
JNIEnv *jEnv;
/* printf("In JavaClass_setProperty\n"); */
/* Get the Java per-thread environment pointer for this JSContext */
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
if (!lookup_static_member_by_id(cx, jEnv, obj, &class_descriptor, id, &member_descriptor))
return JS_FALSE;
/* Check for the case where there is a method with the given name, but no field
with that name */
if (!member_descriptor->field)
goto no_such_field;
/* Silently fail if field value is final (immutable), as required by ECMA spec */
if (member_descriptor->field->modifiers & ACC_FINAL)
return JS_TRUE;
java_class = class_descriptor->java_class;
return jsj_SetJavaFieldValue(cx, jEnv, member_descriptor->field, java_class, *vp);
no_such_field:
JS_IdToValue(cx, id, &idval);
member_name = JS_GetStringBytes(JSVAL_TO_STRING(idval));
JS_ReportError(cx, "No static field named \"%s\" in Java class %s",
member_name, class_descriptor->name);
return JS_FALSE;
}
/*
* Free the private native data associated with the JavaPackage object.
*/
PR_STATIC_CALLBACK(void)
JavaClass_finalize(JSContext *cx, JSObject *obj)
{
JNIEnv *jEnv;
JavaClassDescriptor *class_descriptor = JS_GetPrivate(cx, obj);
if (!class_descriptor)
return;
/* Get the Java per-thread environment pointer for this JSContext */
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return;
printf("Finalizing %s\n", class_descriptor->name);
jsj_ReleaseJavaClassDescriptor(cx, jEnv, class_descriptor);
}
static JSBool
JavaClass_lookupProperty(JSContext *cx, JSObject *obj, jsid id,
JSObject **objp, JSProperty **propp
#if defined JS_THREADSAFE && defined DEBUG
, const char *file, uintN line
#endif
)
{
JNIEnv *jEnv;
/* printf("In JavaClass_lookupProperty()\n"); */
/* Get the Java per-thread environment pointer for this JSContext */
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
if (!lookup_static_member_by_id(cx, jEnv, obj, NULL, id, NULL))
return JS_FALSE;
*objp = obj;
*propp = (JSProperty*)1;
return JS_TRUE;
}
static JSBool
JavaClass_defineProperty(JSContext *cx, JSObject *obj, jsid id, jsval value,
JSPropertyOp getter, JSPropertyOp setter,
uintN attrs, JSProperty **propp)
{
JS_ReportError(cx, "Properties of JavaClass objects may not be deleted");
return JS_FALSE;
}
static JSBool
JavaClass_getAttributes(JSContext *cx, JSObject *obj, jsid id,
JSProperty *prop, uintN *attrsp)
{
/* We don't maintain JS property attributes for Java class members */
*attrsp = JSPROP_PERMANENT|JSPROP_ENUMERATE;
return JS_FALSE;
}
static JSBool
JavaClass_setAttributes(JSContext *cx, JSObject *obj, jsid id,
JSProperty *prop, uintN *attrsp)
{
/* We don't maintain JS property attributes for Java class members */
if (*attrsp != JSPROP_PERMANENT|JSPROP_ENUMERATE) {
PR_ASSERT(0);
return JS_FALSE;
}
/* Silently ignore all setAttribute attempts */
return JS_TRUE;
}
static JSBool
JavaClass_deleteProperty(JSContext *cx, JSObject *obj, jsid id, jsval *vp)
{
JS_ReportError(cx, "Properties of JavaClass objects may not be deleted");
return JS_FALSE;
}
static JSBool
JavaClass_defaultValue(JSContext *cx, JSObject *obj, JSType type, jsval *vp)
{
/* printf("In JavaClass_defaultValue()\n"); */
return JavaClass_convert(cx, obj, JSTYPE_STRING, vp);
}
static JSBool
JavaClass_newEnumerate(JSContext *cx, JSObject *obj, JSIterateOp enum_op,
jsval *statep, jsid *idp)
{
JavaMemberDescriptor *member_descriptor;
JavaClassDescriptor *class_descriptor;
JNIEnv *jEnv;
class_descriptor = JS_GetPrivate(cx, obj);
/* Check for prototype JavaClass object */
if (!class_descriptor) {
*statep = JSVAL_NULL;
if (idp)
*idp = INT_TO_JSVAL(0);
return JS_TRUE;
}
switch(enum_op) {
case JSENUMERATE_INIT:
/* Get the Java per-thread environment pointer for this JSContext */
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
member_descriptor = jsj_GetClassInstanceMembers(cx, jEnv, class_descriptor);
*statep = PRIVATE_TO_JSVAL(member_descriptor);
if (idp)
*idp = INT_TO_JSVAL(class_descriptor->num_instance_members);
return JS_TRUE;
case JSENUMERATE_NEXT:
member_descriptor = JSVAL_TO_PRIVATE(*statep);
if (member_descriptor) {
*idp = member_descriptor->id;
*statep = PRIVATE_TO_JSVAL(member_descriptor->next);
return JS_TRUE;
}
/* Fall through ... */
case JSENUMERATE_DESTROY:
*statep = JSVAL_NULL;
return JS_TRUE;
default:
PR_ASSERT(0);
return JS_FALSE;
}
}
static JSBool
JavaClass_checkAccess(JSContext *cx, JSObject *obj, jsid id,
JSAccessMode mode, jsval *vp, uintN *attrsp)
{
switch (mode) {
case JSACC_WATCH:
JS_ReportError(cx, "Cannot place watchpoints on JavaClass object properties");
return JS_FALSE;
case JSACC_IMPORT:
JS_ReportError(cx, "Cannot export a JavaClass object's properties");
return JS_FALSE;
default:
return JS_TRUE;
}
}
/*
* Implement the JavaScript instanceof operator for JavaClass objects by using
* the equivalent Java instanceof operation.
*/
static JSBool
JavaClass_hasInstance(JSContext *cx, JSObject *obj, jsval candidate_jsval,
JSBool *has_instancep)
{
JavaClassDescriptor *class_descriptor;
JavaObjectWrapper *java_wrapper;
JSClass *js_class;
JSBool has_instance;
JSObject *candidate_obj;
jclass java_class;
jobject java_obj;
JNIEnv *jEnv;
has_instance = JS_FALSE;
class_descriptor = JS_GetPrivate(cx, obj);
if (!class_descriptor) {
JS_ReportError(cx, "illegal operation on JavaClass prototype object");
return JS_FALSE;
}
/*
* Make sure that the thing to the left of the instanceof operator is a
* Java object.
*/
if (!JSVAL_IS_OBJECT(candidate_jsval))
goto done;
candidate_obj = JSVAL_TO_OBJECT(candidate_jsval);
js_class = JS_GetClass(candidate_obj);
if ((js_class != &JavaObject_class) && (js_class != &JavaArray_class))
goto done;
java_class = class_descriptor->java_class;
java_wrapper = JS_GetPrivate(cx, candidate_obj);
if (!java_wrapper) {
JS_ReportError(cx, "illegal operation on prototype object");
return JS_FALSE;
}
java_obj = java_wrapper->java_obj;
/* Get JNI pointer */
jsj_MapJSContextToJSJThread(cx, &jEnv);
has_instance = (*jEnv)->IsInstanceOf(jEnv, java_obj, java_class);
done:
*has_instancep = has_instance;
return JS_TRUE;
}
JSObjectOps JavaClass_ops = {
/* Mandatory non-null function pointer members. */
NULL, /* newObjectMap */
NULL, /* destroyObjectMap */
JavaClass_lookupProperty,
JavaClass_defineProperty,
JavaClass_getPropertyById, /* getProperty */
JavaClass_setPropertyById, /* setProperty */
JavaClass_getAttributes,
JavaClass_setAttributes,
JavaClass_deleteProperty,
JavaClass_defaultValue,
JavaClass_newEnumerate,
JavaClass_checkAccess,
/* Optionally non-null members start here. */
NULL, /* thisObject */
NULL, /* dropProperty */
jsj_JavaConstructorWrapper, /* call */
jsj_JavaConstructorWrapper, /* construct */
NULL, /* xdrObject */
JavaClass_hasInstance, /* hasInstance */
};
JSObjectOps *
JavaClass_getObjectOps(JSContext *cx, JSClass *clazz)
{
return &JavaClass_ops;
}
JSClass JavaClass_class = {
"JavaClass", JSCLASS_HAS_PRIVATE,
NULL, NULL, NULL, NULL,
NULL, NULL, JavaClass_convert, JavaClass_finalize,
JavaClass_getObjectOps,
};
JSObject *
jsj_new_JavaClass(JSContext *cx, JNIEnv *jEnv, JSObject* parent_obj,
JavaClassDescriptor *class_descriptor)
{
JSObject *JavaClass_obj;
JavaClass_obj = JS_NewObject(cx, &JavaClass_class, 0, parent_obj);
if (!JavaClass_obj)
return NULL;
JS_SetPrivate(cx, JavaClass_obj, (void *)class_descriptor);
#ifdef DEBUG
/* printf("JavaClass \'%s\' created\n", class_descriptor->name); */
#endif
return JavaClass_obj;
}
JSObject *
jsj_define_JavaClass(JSContext *cx, JNIEnv *jEnv, JSObject* parent_obj,
const char *simple_class_name,
jclass java_class)
{
JavaClassDescriptor *class_descriptor;
JSObject *JavaClass_obj;
class_descriptor = jsj_GetJavaClassDescriptor(cx, jEnv, java_class);
if (!class_descriptor)
return NULL;
JavaClass_obj = jsj_new_JavaClass(cx, jEnv, parent_obj, class_descriptor);
if (!JavaClass_obj)
return NULL;
if (!JS_DefineProperty(cx, parent_obj, simple_class_name,
OBJECT_TO_JSVAL(JavaClass_obj), 0, 0,
JSPROP_PERMANENT|JSPROP_READONLY|JSPROP_ENUMERATE))
return NULL;
return JavaClass_obj;
}
/*
* The getClass() native JS method is defined as a property of the global
* object. Given a JavaObject it returns the corresponding JavaClass. This
* is useful for accessing static methods and fields.
*
* js> getClass(new java.lang.String("foo"))
* [JavaClass java.lang.String]
*/
static JSBool
getClass(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
JSObject *obj_arg, *JavaClass_obj;
JavaObjectWrapper *java_wrapper;
JavaClassDescriptor *class_descriptor;
JNIEnv *jEnv;
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
if (argc != 1 ||
!JSVAL_IS_OBJECT(argv[0]) ||
!(obj_arg = JSVAL_TO_OBJECT(argv[0])) ||
(!JS_InstanceOf(cx, obj_arg, &JavaObject_class, 0) &&
!JS_InstanceOf(cx, obj_arg, &JavaArray_class, 0))) {
JS_ReportError(cx, "getClass expects a Java object argument");
return JS_FALSE;
}
java_wrapper = JS_GetPrivate(cx, obj_arg);
if (!java_wrapper) {
JS_ReportError(cx, "getClass called on prototype object");
return JS_FALSE;
}
class_descriptor = java_wrapper->class_descriptor;
JavaClass_obj = jsj_new_JavaClass(cx, jEnv, NULL, class_descriptor);
if (!JavaClass_obj)
return JS_FALSE;
*rval = OBJECT_TO_JSVAL(JavaClass_obj);
return JS_TRUE;
}
extern PR_IMPORT_DATA(JSObjectOps) js_ObjectOps;
JSBool
jsj_init_JavaClass(JSContext *cx, JSObject *global_obj)
{
JavaClass_ops.newObjectMap = js_ObjectOps.newObjectMap;
JavaClass_ops.destroyObjectMap = js_ObjectOps.destroyObjectMap;
/* Define JavaClass class */
if (!JS_InitClass(cx, global_obj, 0, &JavaClass_class, 0, 0, 0, 0, 0, 0))
return JS_FALSE;
if (!JS_DefineFunction(cx, global_obj, "getClass", getClass, 0,
JSPROP_READONLY))
return JS_FALSE;
return jsj_InitJavaClassReflectionsTable();
}

View File

@@ -0,0 +1,695 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1998
* Netscape Communications Corporation. All Rights Reserved.
*/
/*
* This file is part of the Java-vendor-neutral implementation of LiveConnect
*
* It contains the native code implementation of JS's JavaObject class.
*
* An instance of JavaObject is the JavaScript reflection of a Java object.
*
*/
#include <stdlib.h>
#include <string.h>
#include "prassert.h"
#include "jsj_private.h" /* LiveConnect internals */
/*
* This is a hash table that maps from Java objects to JS objects.
* It is used to ensure that the same JS object is obtained when a Java
* object is reflected more than once, so that JS object equality tests
* work in the expected manner, i.e. the "==" and "===" operators.
*
* The table entry keys are Java objects (of type jobject) and the entry values
* are JSObject pointers. Because the jobject type is an opaque handle and
* not necessarily a pointer, the hashing and key comparison functions must
* invoke the appropriate JVM functions.
*
* When the corresponding JS object instance is finalized, the entry is
* removed from the table, and a Java GC root for the Java object is removed.
*/
static PRHashTable *java_obj_reflections = NULL;
#ifdef JS_THREADSAFE
static PRMonitor *java_obj_reflections_monitor = NULL;
#endif
static JSBool
init_java_obj_reflections_table()
{
java_obj_reflections =
PR_NewHashTable(512, jsj_HashJavaObject, jsj_JavaObjectComparator,
NULL, NULL, NULL);
if (!java_obj_reflections)
return JS_FALSE;
#ifdef JS_THREADSAFE
java_obj_reflections_monitor = PR_NewNamedMonitor("java_obj_reflections");
if (!java_obj_reflections_monitor) {
PR_HashTableDestroy(java_obj_reflections);
return JS_FALSE;
}
#endif
return JS_TRUE;
}
JSObject *
jsj_WrapJavaObject(JSContext *cx,
JNIEnv *jEnv,
jobject java_obj,
jclass java_class)
{
prhashcode hash_code;
JSClass *js_class;
JSObject *js_wrapper_obj;
JavaObjectWrapper *java_wrapper;
JavaClassDescriptor *class_descriptor;
PRHashEntry *he, **hep;
js_wrapper_obj = NULL;
hash_code = jsj_HashJavaObject((void*)java_obj);
#ifdef JS_THREADSAFE
PR_EnterMonitor(java_obj_reflections_monitor);
#endif
hep = PR_HashTableRawLookup(java_obj_reflections,
hash_code, java_obj);
he = *hep;
if (he) {
js_wrapper_obj = (JSObject *)he->value;
if (js_wrapper_obj)
goto done;
}
/* No existing reflection found. Construct a new one */
class_descriptor = jsj_GetJavaClassDescriptor(cx, jEnv, java_class);
if (!class_descriptor)
goto done;
if (class_descriptor->type == JAVA_SIGNATURE_ARRAY) {
js_class = &JavaArray_class;
} else {
PR_ASSERT(class_descriptor->type == JAVA_SIGNATURE_CLASS);
js_class = &JavaObject_class;
}
/* Create new JS object to reflect Java object */
js_wrapper_obj = JS_NewObject(cx, js_class, NULL, NULL);
if (!js_wrapper_obj)
goto done;
/* Create private, native portion of JavaObject */
java_wrapper =
(JavaObjectWrapper *)JS_malloc(cx, sizeof(JavaObjectWrapper));
if (!java_wrapper) {
jsj_ReleaseJavaClassDescriptor(cx, jEnv, class_descriptor);
goto done;
}
JS_SetPrivate(cx, js_wrapper_obj, java_wrapper);
java_wrapper->class_descriptor = class_descriptor;
java_wrapper->members = NULL;
/* Add the JavaObject to the hash table */
he = PR_HashTableRawAdd(java_obj_reflections, hep, hash_code,
java_obj, js_wrapper_obj);
if (he) {
java_wrapper->java_obj = (*jEnv)->NewGlobalRef(jEnv, java_obj);
if (!java_wrapper->java_obj)
goto out_of_memory;
} else {
goto out_of_memory;
}
done:
#ifdef JS_THREADSAFE
PR_ExitMonitor(java_obj_reflections_monitor);
#endif
return js_wrapper_obj;
out_of_memory:
/* No need to free js_wrapper_obj, as it will be finalized by GC. */
JS_ReportOutOfMemory(cx);
js_wrapper_obj = NULL;
goto done;
}
static void
remove_java_obj_reflection_from_hashtable(jobject java_obj)
{
prhashcode hash_code;
PRHashEntry *he, **hep;
hash_code = jsj_HashJavaObject((void*)java_obj);
#ifdef JS_THREADSAFE
PR_EnterMonitor(java_obj_reflections_monitor);
#endif
hep = PR_HashTableRawLookup(java_obj_reflections, hash_code, java_obj);
he = *hep;
PR_ASSERT(he);
if (he)
PR_HashTableRawRemove(java_obj_reflections, hep, he);
#ifdef JS_THREADSAFE
PR_ExitMonitor(java_obj_reflections_monitor);
#endif
}
void
JavaObject_finalize(JSContext *cx, JSObject *obj)
{
JavaObjectWrapper *java_wrapper;
jobject java_obj;
JNIEnv *jEnv;
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return;
java_wrapper = JS_GetPrivate(cx, obj);
if (!java_wrapper)
return;
java_obj = java_wrapper->java_obj;
remove_java_obj_reflection_from_hashtable(java_obj);
(*jEnv)->DeleteGlobalRef(jEnv, java_obj);
jsj_ReleaseJavaClassDescriptor(cx, jEnv, java_wrapper->class_descriptor);
/* FIXME - Delete JavaMemberValues */
/* if (java_wrapper->invoke_java_method_func_obj)
JS_RemoveRoot(cx, &java_wrapper->invoke_java_method_func_obj); */
JS_free(cx, java_wrapper);
}
/*
static JSBool
JavaObject_toString(JSContext *cx, JSObject *obj,
uintN argc, jsval *argv, jsval *vp)
{
jobject java_obj;
JavaObjectWrapper *java_wrapper;
JavaClassDescriptor *class_descriptor;
java_wrapper = JS_GetPrivate(cx, obj);
if (!java_wrapper) {
JS_ReportError(cx, "illegal operation on JavaObject prototype object");
return JS_FALSE;
}
class_descriptor = java_wrapper->class_descriptor;
java_obj = java_wrapper->java_obj;
return jsj_ConvertJavaObjectToJSString(cx, class_descriptor, java_obj, vp);
}
*/
PR_CALLBACK JSBool
JavaObject_convert(JSContext *cx, JSObject *obj, JSType type, jsval *vp)
{
JavaObjectWrapper *java_wrapper;
JavaClassDescriptor *class_descriptor;
jobject java_obj;
JNIEnv *jEnv;
/* Get the Java per-thread environment pointer for this JSContext */
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
java_wrapper = JS_GetPrivate(cx, obj);
if (!java_wrapper) {
if (type == JSTYPE_OBJECT) {
*vp = OBJECT_TO_JSVAL(obj);
return JS_TRUE;
}
JS_ReportError(cx, "illegal operation on JavaObject prototype object");
return JS_FALSE;
}
java_obj = java_wrapper->java_obj;
class_descriptor = java_wrapper->class_descriptor;
switch (type) {
case JSTYPE_OBJECT:
*vp = OBJECT_TO_JSVAL(obj);
return JS_TRUE;
case JSTYPE_FUNCTION:
JS_ReportError(cx, "can't convert Java object to function");
return JS_FALSE;
case JSTYPE_VOID:
case JSTYPE_STRING:
/* Either extract a C-string from the java.lang.String object
or call the Java toString() method */
return jsj_ConvertJavaObjectToJSString(cx, jEnv, class_descriptor, java_obj, vp);
case JSTYPE_NUMBER:
/* Call Java doubleValue() method, if applicable */
return jsj_ConvertJavaObjectToJSNumber(cx, jEnv, java_obj, vp);
case JSTYPE_BOOLEAN:
/* Call booleanValue() method, if applicable */
return jsj_ConvertJavaObjectToJSBoolean(cx, jEnv, java_obj, vp);
default:
PR_ASSERT(0);
return JS_FALSE;
}
}
static JSBool
lookup_member_by_id(JSContext *cx, JNIEnv *jEnv, JSObject *obj,
JavaObjectWrapper **java_wrapperp,
jsid id, JavaMemberVal **memberp,
JavaMemberDescriptor **member_descriptorp)
{
jsval idval;
JavaMemberVal *member, **prev_memberp;
JavaObjectWrapper *java_wrapper;
JavaMemberDescriptor *member_descriptor;
const char *member_name, *property_name;
JavaClassDescriptor *class_descriptor;
java_wrapper = JS_GetPrivate(cx, obj);
if (!java_wrapper) {
if (JS_IdToValue(cx, id, &idval) && JSVAL_IS_STRING(idval) &&
(property_name = JS_GetStringBytes(JSVAL_TO_STRING(idval)))) {
if (!strcmp(property_name, "constructor")) {
*java_wrapperp = NULL;
*member_descriptorp = NULL;
return JS_TRUE;
}
}
JS_ReportError(cx, "illegal operation on JavaObject prototype object");
return JS_FALSE;
}
class_descriptor = java_wrapper->class_descriptor;
PR_ASSERT(class_descriptor->type == JAVA_SIGNATURE_CLASS ||
class_descriptor->type == JAVA_SIGNATURE_ARRAY);
/* FIXME - not thread-safe */
prev_memberp = &java_wrapper->members;
for (member = *prev_memberp; member; member = member->next) {
member_descriptor = member->descriptor;
if (member_descriptor->id == id) {
*prev_memberp = member->next;
member->next = java_wrapper->members;
break;
}
}
if (!member) {
JSFunction *function;
JSObject *function_obj;
member_descriptor = jsj_LookupJavaMemberDescriptorById(cx, jEnv, class_descriptor, id);
if (member_descriptor && member_descriptor->methods) {
member = (JavaMemberVal*)JS_malloc(cx, sizeof(JavaMemberVal));
if (!member)
return JS_FALSE;
JS_IdToValue(cx, id, &idval);
member_name = JS_GetStringBytes(JSVAL_TO_STRING(idval));
/* printf("Adding %s\n", member_name); */
/* FIXME - eliminate JSFUN_BOUND_METHOD */
/* TODO - Use JS_CloneFunction() to save memory */
function = JS_NewFunction(cx, jsj_JavaInstanceMethodWrapper, 0,
JSFUN_BOUND_METHOD, obj, member_name);
if (!function) {
JS_free(cx, member);
return JS_FALSE;
}
function_obj = JS_GetFunctionObject(function);
member->invoke_method_func_val = OBJECT_TO_JSVAL(function_obj);
member->descriptor = member_descriptor;
member->next = NULL;
JS_AddRoot(cx, &member->invoke_method_func_val);
}
}
/* Place member at head of list of members for faster access next time */
if (member) {
member->next = java_wrapper->members;
java_wrapper->members = member;
}
if (!member_descriptor) {
JS_IdToValue(cx, id, &idval);
if (!JSVAL_IS_STRING(idval)) {
JS_ReportError(cx, "invalid JavaObject property expression. "
"(methods and field properties of a JavaObject object can only be strings)");
return JS_FALSE;
}
member_name = JS_GetStringBytes(JSVAL_TO_STRING(idval));
JS_ReportError(cx, "Java class %s has no public instance field or "
"method named \"%s\"",
class_descriptor->name, member_name);
return JS_FALSE;
}
/* Success. Handle the multiple return values */
if (java_wrapperp)
*java_wrapperp = java_wrapper;
if (memberp)
*memberp = member;
if (member_descriptorp)
*member_descriptorp = member_descriptor;
return JS_TRUE;
}
PR_CALLBACK JSBool
JavaObject_getPropertyById(JSContext *cx, JSObject *obj, jsid id, jsval *vp)
{
jobject java_obj;
JavaMemberDescriptor *member_descriptor;
JavaMemberVal *member;
JavaObjectWrapper *java_wrapper;
JNIEnv *jEnv;
/* printf("In JavaObject_getProperty\n"); */
/* Get the Java per-thread environment pointer for this JSContext */
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
if (!lookup_member_by_id(cx, jEnv, obj, &java_wrapper, id, &member, &member_descriptor))
return JS_FALSE;
/* Handle access to "constructor" property of prototype object with
silent failure. */
if (!member_descriptor) {
*vp = JSVAL_VOID;
return JS_TRUE;
}
java_obj = java_wrapper->java_obj;
if (member_descriptor->field) {
if (!member_descriptor->methods) {
return jsj_GetJavaFieldValue(cx, jEnv, member_descriptor->field, java_obj, vp);
} else {
PR_ASSERT(0);
}
} else {
*vp = member->invoke_method_func_val;
return JS_TRUE;
}
}
PR_STATIC_CALLBACK(JSBool)
JavaObject_setPropertyById(JSContext *cx, JSObject *obj, jsid id, jsval *vp)
{
jobject java_obj;
const char *member_name;
JavaObjectWrapper *java_wrapper;
JavaClassDescriptor *class_descriptor;
JavaMemberDescriptor *member_descriptor;
jsval idval;
JNIEnv *jEnv;
/* printf("In JavaObject_setProperty\n"); */
/* Get the Java per-thread environment pointer for this JSContext */
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
if (!lookup_member_by_id(cx, jEnv, obj, &java_wrapper, id, NULL, &member_descriptor))
return JS_FALSE;
/* Check for the case where there is a method with the give name, but no field
with that name */
if (!member_descriptor->field)
goto no_such_field;
/* Silently fail if field value is final (immutable), as required by ECMA spec */
if (member_descriptor->field->modifiers & ACC_FINAL)
return JS_TRUE;
java_obj = java_wrapper->java_obj;
return jsj_SetJavaFieldValue(cx, jEnv, member_descriptor->field, java_obj, *vp);
no_such_field:
JS_IdToValue(cx, id, &idval);
member_name = JS_GetStringBytes(JSVAL_TO_STRING(idval));
class_descriptor = java_wrapper->class_descriptor;
JS_ReportError(cx, "No instance field named \"%s\" in Java class %s",
member_name, class_descriptor->name);
return JS_FALSE;
}
PR_CALLBACK JSBool
JavaObject_enumerate(JSContext *cx, JSObject *obj)
{
JavaObjectWrapper *java_wrapper;
JavaClassDescriptor *class_descriptor;
JavaMemberDescriptor *member_descriptor;
JNIEnv *jEnv;
/* printf("In JavaObject_enumerate\n"); */
java_wrapper = JS_GetPrivate(cx, obj);
/* Check if this is the prototype object */
if (!java_wrapper)
return JS_TRUE;
/* Get the Java per-thread environment pointer for this JSContext */
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
class_descriptor = java_wrapper->class_descriptor;
member_descriptor = jsj_GetClassInstanceMembers(cx, jEnv, class_descriptor);
while (member_descriptor) {
JS_DefineProperty(cx, obj, member_descriptor->name, JSVAL_VOID, 0, 0,
JSPROP_PERMANENT|JSPROP_ENUMERATE);
member_descriptor = member_descriptor->next;
}
return JS_TRUE;
}
static JSBool
JavaObject_lookupProperty(JSContext *cx, JSObject *obj, jsid id,
JSObject **objp, JSProperty **propp
#if defined JS_THREADSAFE && defined DEBUG
, const char *file, uintN line
#endif
)
{
JNIEnv *jEnv;
/* printf("In JavaObject_lookupProperty()\n"); */
/* Get the Java per-thread environment pointer for this JSContext */
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
if (!lookup_member_by_id(cx, jEnv, obj, NULL, id, NULL, NULL))
return JS_FALSE;
*objp = obj;
*propp = (JSProperty*)1;
return JS_TRUE;
}
static JSBool
JavaObject_defineProperty(JSContext *cx, JSObject *obj, jsid id, jsval value,
JSPropertyOp getter, JSPropertyOp setter,
uintN attrs, JSProperty **propp)
{
JS_ReportError(cx, "Properties of JavaObject objects may not be deleted");
return JS_FALSE;
}
static JSBool
JavaObject_getAttributes(JSContext *cx, JSObject *obj, jsid id,
JSProperty *prop, uintN *attrsp)
{
/* We don't maintain JS property attributes for Java class members */
*attrsp = JSPROP_PERMANENT|JSPROP_ENUMERATE;
return JS_FALSE;
}
static JSBool
JavaObject_setAttributes(JSContext *cx, JSObject *obj, jsid id,
JSProperty *prop, uintN *attrsp)
{
/* We don't maintain JS property attributes for Java class members */
if (*attrsp != JSPROP_PERMANENT|JSPROP_ENUMERATE) {
PR_ASSERT(0);
return JS_FALSE;
}
/* Silently ignore all setAttribute attempts */
return JS_TRUE;
}
static JSBool
JavaObject_deleteProperty(JSContext *cx, JSObject *obj, jsid id, jsval *vp)
{
JS_ReportError(cx, "Properties of JavaObject objects may not be deleted");
return JS_FALSE;
}
static JSBool
JavaObject_defaultValue(JSContext *cx, JSObject *obj, JSType type, jsval *vp)
{
/* printf("In JavaObject_defaultValue()\n"); */
return JavaObject_convert(cx, obj, JSTYPE_STRING, vp);
}
static JSBool
JavaObject_newEnumerate(JSContext *cx, JSObject *obj, JSIterateOp enum_op,
jsval *statep, jsid *idp)
{
JavaObjectWrapper *java_wrapper;
JavaMemberDescriptor *member_descriptor;
JavaClassDescriptor *class_descriptor;
JNIEnv *jEnv;
java_wrapper = JS_GetPrivate(cx, obj);
/* Check for prototype object */
if (!java_wrapper) {
*statep = JSVAL_NULL;
if (idp)
*idp = INT_TO_JSVAL(0);
return JS_TRUE;
}
class_descriptor = java_wrapper->class_descriptor;
switch(enum_op) {
case JSENUMERATE_INIT:
/* Get the Java per-thread environment pointer for this JSContext */
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
member_descriptor = jsj_GetClassInstanceMembers(cx, jEnv, class_descriptor);
*statep = PRIVATE_TO_JSVAL(member_descriptor);
if (idp)
*idp = INT_TO_JSVAL(class_descriptor->num_instance_members);
return JS_TRUE;
case JSENUMERATE_NEXT:
member_descriptor = JSVAL_TO_PRIVATE(*statep);
if (member_descriptor) {
*idp = member_descriptor->id;
*statep = PRIVATE_TO_JSVAL(member_descriptor->next);
return JS_TRUE;
}
/* Fall through ... */
case JSENUMERATE_DESTROY:
*statep = JSVAL_NULL;
return JS_TRUE;
default:
PR_ASSERT(0);
return JS_FALSE;
}
}
static JSBool
JavaObject_checkAccess(JSContext *cx, JSObject *obj, jsid id,
JSAccessMode mode, jsval *vp, uintN *attrsp)
{
switch (mode) {
case JSACC_WATCH:
JS_ReportError(cx, "Cannot place watchpoints on JavaObject object properties");
return JS_FALSE;
case JSACC_IMPORT:
JS_ReportError(cx, "Cannot export a JavaObject object's properties");
return JS_FALSE;
default:
return JS_TRUE;
}
}
JSObjectOps JavaObject_ops = {
/* Mandatory non-null function pointer members. */
NULL, /* newObjectMap */
NULL, /* destroyObjectMap */
JavaObject_lookupProperty,
JavaObject_defineProperty,
JavaObject_getPropertyById, /* getProperty */
JavaObject_setPropertyById, /* setProperty */
JavaObject_getAttributes,
JavaObject_setAttributes,
JavaObject_deleteProperty,
JavaObject_defaultValue,
JavaObject_newEnumerate,
JavaObject_checkAccess,
/* Optionally non-null members start here. */
NULL, /* thisObject */
NULL, /* dropProperty */
NULL, /* call */
NULL, /* construct */
NULL, /* xdrObject */
NULL, /* hasInstance */
};
JSObjectOps *
JavaObject_getObjectOps(JSContext *cx, JSClass *clazz)
{
return &JavaObject_ops;
}
JSClass JavaObject_class = {
"JavaObject", JSCLASS_HAS_PRIVATE,
NULL, NULL, NULL, NULL,
NULL, NULL, JavaObject_convert, JavaObject_finalize,
JavaObject_getObjectOps,
};
extern PR_IMPORT_DATA(JSObjectOps) js_ObjectOps;
JSBool
jsj_init_JavaObject(JSContext *cx, JSObject *global_obj)
{
JavaObject_ops.newObjectMap = js_ObjectOps.newObjectMap;
JavaObject_ops.destroyObjectMap = js_ObjectOps.destroyObjectMap;
if (!JS_InitClass(cx, global_obj,
0, &JavaObject_class, 0, 0,
0, 0,
0, 0))
return JS_FALSE;
return init_java_obj_reflections_table();
}

View File

@@ -0,0 +1,438 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1998
* Netscape Communications Corporation. All Rights Reserved.
*/
/* This file is part of the Java-vendor-neutral implementation of LiveConnect
*
* It contains the native code implementation of the JavaPackage class.
*
* A JavaPackage is JavaScript's representation of a Java package. The
* JavaPackage object contains only a string, which is the path to the package,
* e.g. "java/lang". The JS properties of a JavaPackage are either nested packages
* or a JavaClass object, which represents the path to a Java class.
*
* Note that there is no equivalent to a JavaPackage object in Java. Example:
* Although there are instances of java.lang.String and there are static methods
* of java.lang.String that can be invoked, there's no such thing as a java.lang
* object in Java that exists at run time.
*
*/
#include <stdlib.h>
#include <string.h>
#include "prtypes.h"
#include "prprintf.h"
#include "jsj_private.h" /* LiveConnect internals */
#include "jsjava.h"
JSClass JavaPackage_class; /* Forward declaration */
/*
* The native part of a JavaPackage object. It gets stored in the object's
* private slot.
*/
typedef struct {
const char * path; /* e.g. "java/lang" or NULL if top level package */
int flags; /* e.g. PKG_SYSTEM, PKG_CLASS */
} JavaPackage_Private;
JSObject *
define_JavaPackage(JSContext *cx, JSObject *parent_obj,
const char *obj_name, const char *path, int flags)
{
JSObject *package_obj;
JavaPackage_Private *package;
package_obj = JS_DefineObject(cx, parent_obj, obj_name, &JavaPackage_class, 0,
JSPROP_PERMANENT | JSPROP_READONLY);
if (!package_obj)
return NULL;
/* Attach private, native data to the JS object */
package = (JavaPackage_Private *)JS_malloc(cx, sizeof(JavaPackage_Private));
JS_SetPrivate(cx, package_obj, (void *)package);
if (path)
package->path = JS_strdup(cx, path);
else
package->path = "";
package->flags = flags;
/* Check for OOM */
if (!package->path) {
JS_DeleteProperty(cx, parent_obj, obj_name);
JS_free(cx, package);
return NULL;
}
return package_obj;
}
/* JavaPackage uses standard JS getProperty */
/*
* Don't allow user-defined properties to be set on Java package objects, e.g.
* it is illegal to write "java.lang.myProperty = 4". We probably could relax
* this restriction, but it's potentially confusing and not clearly useful.
*/
static JSBool
JavaPackage_setProperty(JSContext *cx, JSObject *obj, jsval slot, jsval *vp)
{
JavaPackage_Private *package = JS_GetPrivate(cx, obj);
if (!package) {
JS_ReportError(cx, "illegal attempt to add property to "
"JavaPackage prototype object");
return JS_FALSE;
}
JS_ReportError(cx, "You may not add properties to %s, "
"as it is not a JavaScript object", package->path);
return JS_FALSE;
}
static JSBool quiet_resolve_failure;
/*
* Resolve a component name to be either the name of a class or a package.
*/
static JSBool
JavaPackage_resolve(JSContext *cx, JSObject *obj, jsval id)
{
JavaPackage_Private *package;
JSBool ok = JS_TRUE;
jclass jclazz;
char *subPath, *newPath;
const char *path;
JNIEnv *jEnv;
package = (JavaPackage_Private *)JS_GetPrivate(cx, obj);
if (!package) {
fprintf(stderr, "JavaPackage_resolve: no private data!\n");
return JS_FALSE;
}
path = package->path;
subPath = JS_GetStringBytes(JSVAL_TO_STRING(id));
newPath = PR_smprintf("%s%s%s", path, (path[0] ? "/" : ""), subPath);
if (!newPath) {
JS_ReportOutOfMemory(cx);
return JS_FALSE;
}
jsj_MapJSContextToJSJThread(cx, &jEnv);
if (!jEnv)
return JS_FALSE;
/*
Unfortunately, Java provides no way to find out whether a particular
name is a package or not. The only way to tell is to try to load the
name as a class file and, if that fails, assume it's a package. This
makes things work as expected for the most part, but it has three
noticeable problems that keep coming up:
- You can refer to a package like java.lang.i.buried.paul without
generating a complaint. Of course, you'll never be able to refer to
any classes through it.
- An annoying consequence of the above is that misspelling a class name
results in a cryptic error about packages.
- In a browser context, i.e. where applets are involved, figuring out
whether something is a class may require looking for it over the net
using the current classloader. This means that the first time you
refer to java.lang.System in a js context, there will be an attempt
to search for [[DOCBASE]]/java.class on the server.
A solution is to explicitly tell jsjava the names of all the (local)
packages on the CLASSPATH. (Not implemented yet.)
*/
jclazz = (*jEnv)->FindClass(jEnv, newPath);
if (jclazz) {
JSObject *newClass;
newClass = jsj_define_JavaClass(cx, jEnv, obj, subPath, jclazz);
if (!newClass) {
ok = JS_FALSE;
goto out;
}
} else {
/*
* If there's no class of the given name, then we must be referring to
* a package. However, don't allow bogus sub-packages of pre-defined
* system packages to be created.
*/
if (JS_InstanceOf(cx, obj, &JavaPackage_class, NULL)) {
JavaPackage_Private *package;
package = JS_GetPrivate(cx, obj);
if (package->flags & PKG_SYSTEM) {
char *msg, *cp;
/* Painful hack for pre_define_java_packages() */
if (quiet_resolve_failure)
return JS_FALSE;
msg = PR_smprintf("No Java system package with name \"%s\" was identified "
"at initialization time and no Java class "
"with that name exists either", newPath);
/* Check for OOM */
if (msg) {
/* Convert package of form "java/lang" to "java.lang" */
for (cp = msg; *cp != '\0'; cp++)
if (*cp == '/')
*cp = '.';
JS_ReportError(cx, msg);
free((char*)msg);
}
return JS_FALSE;
}
}
if (!define_JavaPackage(cx, obj, subPath, newPath, 0)) {
ok = JS_FALSE;
goto out;
}
#ifdef DEBUG
printf("JavaPackage \'%s/%s\' created\n", subPath, newPath);
#endif
}
out:
free(newPath);
return ok;
}
static JSBool
JavaPackage_convert(JSContext *cx, JSObject *obj, JSType type, jsval *vp)
{
JSString *str;
char *name, *cp;
JavaPackage_Private *package = JS_GetPrivate(cx, obj);
if (!package) {
fprintf(stderr, "JavaPackage_resolve: no private data!\n");
return JS_FALSE;
}
switch (type) {
/* Pretty-printing of JavaPackage */
case JSTYPE_STRING:
/* Convert '/' to '.' so that it looks like Java language syntax. */
if (!package->path)
break;
name = PR_smprintf("[JavaPackage %s]", package->path);
if (!name) {
JS_ReportOutOfMemory(cx);
return JS_FALSE;
}
for (cp = name; *cp != '\0'; cp++)
if (*cp == '/')
*cp = '.';
str = JS_NewString(cx, name, strlen(name));
if (!str) {
free(name);
/* It's not necessary to call JS_ReportOutOfMemory(), as
JS_NewString() will do so on failure. */
return JS_FALSE;
}
*vp = STRING_TO_JSVAL(str);
break;
case JSTYPE_OBJECT:
*vp = OBJECT_TO_JSVAL(obj);
break;
default:
break;
}
return JS_TRUE;
}
/*
* Free the private native data associated with the JavaPackage object.
*/
static void
JavaPackage_finalize(JSContext *cx, JSObject *obj)
{
JavaPackage_Private *package = JS_GetPrivate(cx, obj);
if (!package)
return;
if (package->path)
JS_free(cx, (char *)package->path);
JS_free(cx, package);
}
/*
* The definition of the JavaPackage class
*/
JSClass JavaPackage_class = {
"JavaPackage", JSCLASS_HAS_PRIVATE,
JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JavaPackage_setProperty,
JS_EnumerateStub, JavaPackage_resolve,
JavaPackage_convert, JavaPackage_finalize
};
JavaPackageDef
standard_java_packages[] = {
{"java", NULL, PKG_SYSTEM},
{"java.awt", NULL, PKG_SYSTEM},
{"java.awt.event", NULL, PKG_SYSTEM},
{"java.awt.image", NULL, PKG_SYSTEM},
{"java.awt.peer", NULL, PKG_SYSTEM},
{"java.beans", NULL, PKG_SYSTEM},
{"java.io", NULL, PKG_SYSTEM},
{"java.lang", NULL, PKG_SYSTEM},
{"java.lang.reflect", NULL, PKG_SYSTEM},
{"java.math", NULL, PKG_SYSTEM},
{"java.net", NULL, PKG_SYSTEM},
{"java.text", NULL, PKG_SYSTEM},
{"java.util", NULL, PKG_SYSTEM},
{"java.util.zip", NULL, PKG_SYSTEM},
{"netscape", NULL, PKG_SYSTEM},
{"netscape.javascript", NULL, PKG_SYSTEM},
{"sun", NULL, PKG_USER},
{"Packages", "", PKG_USER},
0
};
/*
* Pre-define a hierarchy of JavaPackage objects.
* Pre-defining a Java package at initialization time is not necessary, but
* it will make package lookup faster and, more importantly, will avoid
* unnecessary network accesses if classes are being loaded over the network.
*/
static JSBool
pre_define_java_packages(JSContext *cx, JSObject *global_obj,
JavaPackageDef *predefined_packages)
{
JSBool package_exists;
JSObject *parent_obj;
JavaPackageDef *package_def;
char *simple_name, *cp, *package_name, *path;
int flags;
if (!predefined_packages)
return JS_TRUE;
/* Iterate over all pre-defined Java packages */
for (package_def = predefined_packages; package_def->name; package_def++) {
package_name = path = NULL;
parent_obj = global_obj;
package_name = strdup(package_def->name);
if (!package_name)
goto out_of_memory;
/* Walk the chain of JavaPackage objects to get to the parent of the
rightmost sub-package in the fully-qualified package name. */
for (simple_name = strtok(package_name, "."); 1; simple_name = strtok(NULL, ".")) {
jsval v;
if (!simple_name) {
JS_ReportError(cx, "Package %s defined twice ?", package_name);
goto error;
}
/* Check to see if the sub-package already exists */
quiet_resolve_failure = JS_TRUE;
package_exists = JS_LookupProperty(cx, parent_obj, simple_name, &v) && JSVAL_IS_OBJECT(v);
quiet_resolve_failure = JS_FALSE;
if (package_exists) {
parent_obj = JSVAL_TO_OBJECT(v);
continue;
} else {
/* New package objects should only be created at the terminal
sub-package in a fully-qualified package-name */
if (strtok(NULL, ".")) {
JS_ReportError(cx, "Illegal predefined package definition for %s",
package_def->name);
goto error;
}
if (package_def->path) {
path = strdup(package_def->path);
if (!path)
goto out_of_memory;
} else {
/*
* The default path is specified, so create it from the
* fully-qualified package name.
*/
path = strdup(package_def->name);
if (!path)
goto out_of_memory;
/* Transform package name, e.g. "java.lang" ==> "java/lang" */
for (cp = path; *cp != '\0'; cp++) {
if (*cp == '.')
*cp = '/';
}
}
flags = package_def->flags;
parent_obj = define_JavaPackage(cx, parent_obj, simple_name, path, flags);
if (!parent_obj)
goto error;
free(path);
break;
}
}
free(package_name);
}
return JS_TRUE;
out_of_memory:
JS_ReportOutOfMemory(cx);
error:
JS_FREE_IF(cx, package_name);
JS_FREE_IF(cx, path);
return JS_FALSE;
}
/*
* One-time initialization for the JavaPackage class. (This is not
* run once per thread, rather it's run once for a given JSContext.)
*/
JSBool
jsj_init_JavaPackage(JSContext *cx, JSObject *global_obj,
JavaPackageDef *additional_predefined_packages) {
/* Define JavaPackage class */
if (!JS_InitClass(cx, global_obj, 0, &JavaPackage_class, 0, 0, 0, 0, 0, 0))
return JS_FALSE;
/* Add top-level packages, e.g. : java, netscape, sun */
if (!pre_define_java_packages(cx, global_obj, standard_java_packages))
return JS_FALSE;
if (!pre_define_java_packages(cx, global_obj, additional_predefined_packages))
return JS_FALSE;
return JS_TRUE;
}

View File

@@ -0,0 +1,180 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1998
* Netscape Communications Corporation. All Rights Reserved.
*/
/*
* This file is part of the Java-vendor-neutral implementation of LiveConnect
*
* It contains the code for reading and writing elements of a Java array.
*/
#include "prtypes.h"
#include "prassert.h"
#include "jsj_private.h" /* LiveConnect internals */
/*
* Read the Java value at a given index into a Java array and convert it
* to a JS value. The array_component_signature describes the type of
* the resulting Java value, which can be a primitive type or an object type.
* More specifically it can be an array type in the case of multidimensional
* arrays.
*/
JSBool
jsj_GetJavaArrayElement(JSContext *cx, JNIEnv *jEnv, jarray java_array, jsize index,
JavaSignature *array_component_signature,
jsval *vp)
{
jvalue java_value;
JavaSignatureChar component_type;
#define GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Type,member) \
(*jEnv)->Get##Type##ArrayRegion(jEnv, java_array, index, 1, \
&java_value.member); \
if ((*jEnv)->ExceptionOccurred(jEnv)) { \
jsj_ReportJavaError(cx, jEnv, "Error reading element of " \
"Java primitive array"); \
return JS_FALSE; \
}
component_type = array_component_signature->type;
switch(component_type) {
case JAVA_SIGNATURE_BYTE:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Byte,b);
break;
case JAVA_SIGNATURE_CHAR:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Char,c);
break;
case JAVA_SIGNATURE_SHORT:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Short,s);
break;
case JAVA_SIGNATURE_INT:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Int,i);
break;
case JAVA_SIGNATURE_BOOLEAN:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Boolean,z);
break;
case JAVA_SIGNATURE_LONG:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Long,j);
break;
case JAVA_SIGNATURE_FLOAT:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Float,f);
break;
case JAVA_SIGNATURE_DOUBLE:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Double,d);
break;
case JAVA_SIGNATURE_CLASS:
case JAVA_SIGNATURE_ARRAY:
java_value.l = (*jEnv)->GetObjectArrayElement(jEnv, java_array, index);
if ((*jEnv)->ExceptionOccurred(jEnv)) {
jsj_ReportJavaError(cx, jEnv, "Error reading Java object array");
return JS_FALSE;
}
break;
#undef GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY
default:
PR_ASSERT(0); /* Unknown java type signature */
return JS_FALSE;
}
return jsj_ConvertJavaValueToJSValue(cx, jEnv, array_component_signature, &java_value, vp);
}
JSBool
jsj_SetJavaArrayElement(JSContext *cx, JNIEnv *jEnv, jarray java_array, jsize index,
JavaSignature *array_component_signature,
jsval js_val)
{
int dummy_cost;
jvalue java_value;
JavaSignatureChar component_type;
if (!jsj_ConvertJSValueToJavaValue(cx, jEnv, js_val, array_component_signature,
&dummy_cost, &java_value))
return JS_FALSE;
#define SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Type,member) \
(*jEnv)->Set##Type##ArrayRegion(jEnv, java_array, index, 1, \
&java_value.member); \
if ((*jEnv)->ExceptionOccurred(jEnv)) { \
jsj_ReportJavaError(cx, jEnv, "Error assigning to element of " \
"Java primitive array"); \
return JS_FALSE; \
}
component_type = array_component_signature->type;
switch(component_type) {
case JAVA_SIGNATURE_BYTE:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Byte,b);
break;
case JAVA_SIGNATURE_CHAR:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Char,c);
break;
case JAVA_SIGNATURE_SHORT:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Short,s);
break;
case JAVA_SIGNATURE_INT:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Int,i);
break;
case JAVA_SIGNATURE_BOOLEAN:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Boolean,z);
break;
case JAVA_SIGNATURE_LONG:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Long,j);
break;
case JAVA_SIGNATURE_FLOAT:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Float,f);
break;
case JAVA_SIGNATURE_DOUBLE:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Double,d);
break;
case JAVA_SIGNATURE_CLASS:
case JAVA_SIGNATURE_ARRAY:
(*jEnv)->SetObjectArrayElement(jEnv, java_array, index, java_value.l);
if ((*jEnv)->ExceptionOccurred(jEnv)) {
jsj_ReportJavaError(cx, jEnv, "Error assigning to Java object array");
return JS_FALSE;
}
break;
#undef SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY
default:
PR_ASSERT(0); /* Unknown java type signature */
return JS_FALSE;
}
return JS_TRUE;
}

View File

@@ -0,0 +1,572 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1998
* Netscape Communications Corporation. All Rights Reserved.
*/
/*
* This file is part of the Java-vendor-neutral implementation of LiveConnect
*
* It contains the code that constructs and manipulates JavaClassDescriptor
* structs, which are the native wrappers for Java classes.
* JavaClassDescriptors are used to describe the signatures of methods and
* fields. There is a JavaClassDescriptor associated with the reflection of
* each Java Object.
*/
#include <stdlib.h>
#include <string.h>
#include "prtypes.h"
#include "prprintf.h"
#include "prassert.h"
#include "jsj_private.h" /* LiveConnect internals */
#include "prhash.h" /* Hash tables */
/* A one-to-one mapping between all referenced java.lang.Class objects and
their corresponding JavaClassDescriptor objects */
static PRHashTable *java_class_reflections;
/*
* Given a JVM handle to a java.lang.Class object, malloc a C-string
* containing the UTF8 encoding of the fully qualified name of the class.
* It's the caller's responsibility to free the returned string.
*
* If an error occurs, NULL is returned and the error reporter called.
*/
const char *
jsj_GetJavaClassName(JSContext *cx, JNIEnv *jEnv, jclass java_class)
{
jstring java_class_name_jstr;
const char *java_class_name;
/* Get java.lang.String object containing class name */
java_class_name_jstr =
(*jEnv)->CallObjectMethod(jEnv, java_class, jlClass_getName);
if (!java_class_name_jstr)
goto error;
/* Convert to UTF8 encoding and copy */
java_class_name = jsj_DupJavaStringUTF(cx, jEnv, java_class_name_jstr);
if (!java_class_name)
return NULL;
return java_class_name;
error:
jsj_UnexpectedJavaError(cx, jEnv, "Can't get Java class name using"
"java.lang.Class.getName()");
return NULL;
}
/*
* Convert in-place a string of the form "java.lang.String" into "java/lang/String".
* Though the former style is conventionally used by Java programmers, the latter is
* what the JNI functions require.
*/
void
jsj_MakeJNIClassname(char * class_name)
{
char * c;
for (c = class_name; *c; c++)
if (*c == '.')
*c = '/';
}
/*
* Classify an instance of java.lang.Class as either one of the primitive
* types, e.g. int, char, etc., as an array type or as a non-array object type
* (subclass of java.lang.Object) by returning the appropriate enum member.
*
*/
static JavaSignatureChar
get_signature_type(JSContext *cx, JavaClassDescriptor *class_descriptor)
{
JavaSignatureChar type;
const char *java_class_name;
/* Get UTF8 encoding of class name */
java_class_name = class_descriptor->name;
PR_ASSERT(java_class_name);
if (!java_class_name)
return JAVA_SIGNATURE_UNKNOWN;
if (!strcmp(java_class_name, "byte"))
type = JAVA_SIGNATURE_BYTE;
else if (!strcmp(java_class_name, "char"))
type = JAVA_SIGNATURE_CHAR;
else if (!strcmp(java_class_name, "float"))
type = JAVA_SIGNATURE_FLOAT;
else if (!strcmp(java_class_name, "double"))
type = JAVA_SIGNATURE_DOUBLE;
else if (!strcmp(java_class_name, "int"))
type = JAVA_SIGNATURE_INT;
else if (!strcmp(java_class_name, "long"))
type = JAVA_SIGNATURE_LONG;
else if (!strcmp(java_class_name, "short"))
type = JAVA_SIGNATURE_SHORT;
else if (!strcmp(java_class_name, "boolean"))
type = JAVA_SIGNATURE_BOOLEAN;
else if (!strcmp(java_class_name, "void"))
type = JAVA_SIGNATURE_VOID;
else
/* Well, I guess it's a Java class, then. */
type = JAVA_SIGNATURE_CLASS;
return type;
}
static JSBool
is_java_array_class(JNIEnv *jEnv, jclass java_class)
{
return (*jEnv)->CallBooleanMethod(jEnv, java_class, jlClass_isArray);
}
/*
* Return the class of a Java array's component type. This is not the same
* as the array's element type. For example, the component type of an array
* of type SomeType[][][] is SomeType[][], but its element type is SomeType.
*
* If an error occurs, NULL is returned and an error reported.
*/
static jclass
get_java_array_component_class(JSContext *cx, JNIEnv *jEnv, jclass java_class)
{
jclass result;
result = (*jEnv)->CallObjectMethod(jEnv, java_class, jlClass_getComponentType);
if (!result) {
jsj_UnexpectedJavaError(cx, jEnv,
"Can't get Java array component class using "
"java.lang.Class.getComponentType()");
return NULL;
}
return result;
}
/*
* Given a Java class, fill in the signature structure that describes the class.
* If an error occurs, JS_FALSE is returned and the error reporter called.
*/
static JSBool
compute_java_class_signature(JSContext *cx, JNIEnv *jEnv, JavaSignature *signature)
{
jclass java_class = signature->java_class;
if (is_java_array_class(jEnv, java_class)) {
jclass component_class;
signature->type = JAVA_SIGNATURE_ARRAY;
component_class = get_java_array_component_class(cx, jEnv, java_class);
if (!component_class)
return JS_FALSE;
signature->array_component_signature =
jsj_GetJavaClassDescriptor(cx, jEnv, component_class);
if (!signature->array_component_signature)
return JS_FALSE;
} else {
signature->type = get_signature_type(cx, signature);
}
return JS_TRUE;
}
/*
* Convert a JavaSignature object into a string format as used by
* the JNI functions, e.g. java.lang.Object ==> "Ljava/lang/Object;"
* The caller is responsible for freeing the resulting string.
*
* If an error is encountered, NULL is returned and an error reported.
*/
const char *
jsj_ConvertJavaSignatureToString(JSContext *cx, JavaSignature *signature)
{
char *sig;
if (signature->type == JAVA_SIGNATURE_CLASS) {
/* A non-array object class */
sig = PR_smprintf("L%s;", signature->name);
if (sig)
jsj_MakeJNIClassname(sig);
} else if (signature->type == JAVA_SIGNATURE_ARRAY) {
/* An array class */
const char *component_signature_string;
component_signature_string =
jsj_ConvertJavaSignatureToString(cx, signature->array_component_signature);
if (!component_signature_string)
return NULL;
sig = PR_smprintf("[%s", component_signature_string);
JS_free(cx, (char*)component_signature_string);
} else {
/* A primitive class */
sig = PR_smprintf("%c", (char)signature->type);
}
if (!sig) {
JS_ReportOutOfMemory(cx);
return NULL;
}
return sig;
}
/*
* Convert a JavaSignature object into a human-readable string format as seen
* in Java source files, e.g. "byte", or "int[][]" or "java.lang.String".
* The caller is responsible for freeing the resulting string.
*
* If an error is encountered, NULL is returned and an error reported.
*/
const char *
jsj_ConvertJavaSignatureToHRString(JSContext *cx,
JavaSignature *signature)
{
char *sig;
JavaSignature *acs;
if (signature->type == JAVA_SIGNATURE_ARRAY) {
/* An array class */
const char *component_signature_string;
acs = signature->array_component_signature;
component_signature_string =
jsj_ConvertJavaSignatureToHRString(cx, acs);
if (!component_signature_string)
return NULL;
sig = PR_smprintf("%s[]", component_signature_string);
JS_free(cx, (char*)component_signature_string);
} else {
/* A primitive class or a non-array object class */
sig = JS_strdup(cx, signature->name);
}
if (!sig) {
JS_ReportOutOfMemory(cx);
return NULL;
}
return sig;
}
static void
destroy_java_member_descriptor(JSContext *cx, JNIEnv *jEnv, JavaMemberDescriptor *member_descriptor)
{
JavaMethodSpec *method, *next_method;
if (member_descriptor->field)
jsj_DestroyFieldSpec(cx, jEnv, member_descriptor->field);
method = member_descriptor->methods;
while (method) {
next_method = method->next;
jsj_DestroyMethodSpec(cx, jEnv, method);
method = next_method;
}
}
static void
destroy_class_member_descriptors(JSContext *cx, JNIEnv *jEnv, JavaMemberDescriptor *member_descriptor)
{
JavaMemberDescriptor *next_member;
while (member_descriptor) {
next_member = member_descriptor->next;
destroy_java_member_descriptor(cx, jEnv, member_descriptor);
member_descriptor = next_member;
}
}
static void
destroy_class_descriptor(JSContext *cx, JNIEnv *jEnv, JavaClassDescriptor *class_descriptor)
{
JS_FREE_IF(cx, (char *)class_descriptor->name);
if (class_descriptor->java_class) {
(*jEnv)->DeleteGlobalRef(jEnv, class_descriptor->java_class);
PR_HashTableRemove(java_class_reflections, class_descriptor->java_class);
}
if (class_descriptor->array_component_signature)
jsj_ReleaseJavaClassDescriptor(cx, jEnv, class_descriptor->array_component_signature);
destroy_class_member_descriptors(cx, jEnv, class_descriptor->instance_members);
destroy_class_member_descriptors(cx, jEnv, class_descriptor->static_members);
destroy_class_member_descriptors(cx, jEnv, class_descriptor->constructors);
JS_free(cx, class_descriptor);
}
static JavaClassDescriptor *
new_class_descriptor(JSContext *cx, JNIEnv *jEnv, jclass java_class)
{
JavaClassDescriptor *class_descriptor;
class_descriptor = (JavaClassDescriptor *)JS_malloc(cx, sizeof(JavaClassDescriptor));
if (!class_descriptor)
return NULL;
memset(class_descriptor, 0, sizeof(JavaClassDescriptor));
class_descriptor->name = jsj_GetJavaClassName(cx, jEnv, java_class);
if (!class_descriptor->name)
goto error;
java_class = (*jEnv)->NewGlobalRef(jEnv, java_class);
if (!java_class) {
jsj_ReportJavaError(cx, jEnv, "Unable to reference Java class");
goto error;
}
class_descriptor->java_class = java_class;
if (!compute_java_class_signature(cx, jEnv, class_descriptor))
goto error;
class_descriptor->modifiers =
(*jEnv)->CallIntMethod(jEnv, java_class, jlClass_getModifiers);
class_descriptor->ref_count = 1;
if (!PR_HashTableAdd(java_class_reflections, java_class, class_descriptor))
goto error;
return class_descriptor;
error:
destroy_class_descriptor(cx, jEnv, class_descriptor);
return NULL;
}
extern JavaClassDescriptor *
jsj_GetJavaClassDescriptor(JSContext *cx, JNIEnv *jEnv, jclass java_class)
{
JavaClassDescriptor *class_descriptor;
class_descriptor = PR_HashTableLookup(java_class_reflections,
(const void *)java_class);
if (!class_descriptor)
return new_class_descriptor(cx, jEnv, java_class);
PR_ASSERT(class_descriptor->ref_count > 0);
class_descriptor->ref_count++;
return class_descriptor;
}
void
jsj_ReleaseJavaClassDescriptor(JSContext *cx, JNIEnv *jEnv, JavaClassDescriptor *class_descriptor)
{
if (!--class_descriptor->ref_count)
destroy_class_descriptor(cx, jEnv, class_descriptor);
}
static JSBool
reflect_java_methods_and_fields(JSContext *cx,
JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor,
JSBool reflect_statics_only)
{
JavaMemberDescriptor *member_descriptor;
if (reflect_statics_only)
class_descriptor->static_members_reflected = JS_TRUE;
else
class_descriptor->instance_members_reflected = JS_TRUE;
if (!jsj_ReflectJavaMethods(cx, jEnv, class_descriptor, reflect_statics_only))
return JS_FALSE;
if (!jsj_ReflectJavaFields(cx, jEnv, class_descriptor, reflect_statics_only))
return JS_FALSE;
if (reflect_statics_only) {
member_descriptor = class_descriptor->static_members;
while (member_descriptor) {
class_descriptor->num_static_members++;
member_descriptor = member_descriptor->next;
}
} else {
member_descriptor = class_descriptor->instance_members;
while (member_descriptor) {
class_descriptor->num_instance_members++;
member_descriptor = member_descriptor->next;
}
}
return JS_TRUE;
}
JavaMemberDescriptor *
jsj_GetClassStaticMembers(JSContext *cx,
JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor)
{
if (!class_descriptor->static_members_reflected)
reflect_java_methods_and_fields(cx, jEnv, class_descriptor, JS_TRUE);
return class_descriptor->static_members;
}
JavaMemberDescriptor *
jsj_GetClassInstanceMembers(JSContext *cx,
JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor)
{
if (!class_descriptor->instance_members_reflected)
reflect_java_methods_and_fields(cx, jEnv, class_descriptor, JS_FALSE);
return class_descriptor->instance_members;
}
JavaMemberDescriptor *
jsj_LookupJavaStaticMemberDescriptorById(JSContext *cx,
JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor,
jsid id)
{
JavaMemberDescriptor *member_descriptor;
member_descriptor = jsj_GetClassStaticMembers(cx, jEnv, class_descriptor);
while (member_descriptor) {
if (id == member_descriptor->id)
return member_descriptor;
member_descriptor = member_descriptor->next;
}
return NULL;
}
JavaMemberDescriptor *
jsj_GetJavaStaticMemberDescriptor(JSContext *cx,
JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor,
jstring member_name_jstr)
{
JavaMemberDescriptor *member_descriptor;
jsid id;
if (!JavaStringToId(cx, jEnv, member_name_jstr, &id))
return NULL;
member_descriptor = jsj_LookupJavaStaticMemberDescriptorById(cx, jEnv, class_descriptor, id);
if (member_descriptor)
return member_descriptor;
member_descriptor = JS_malloc(cx, sizeof(JavaMemberDescriptor));
if (!member_descriptor)
return NULL;
memset(member_descriptor, 0, sizeof(JavaMemberDescriptor));
member_descriptor->name = jsj_DupJavaStringUTF(cx, jEnv, member_name_jstr);
if (!member_descriptor->name) {
JS_free(cx, member_descriptor);
return NULL;
}
member_descriptor->id = id;
member_descriptor->next = class_descriptor->static_members;
class_descriptor->static_members = member_descriptor;
return member_descriptor;
}
JavaMemberDescriptor *
jsj_GetJavaClassConstructors(JSContext *cx,
JavaClassDescriptor *class_descriptor)
{
JavaMemberDescriptor *member_descriptor;
if (class_descriptor->constructors)
return class_descriptor->constructors;
member_descriptor = JS_malloc(cx, sizeof(JavaMemberDescriptor));
if (!member_descriptor)
return NULL;
memset(member_descriptor, 0, sizeof(JavaMemberDescriptor));
member_descriptor->name = JS_strdup(cx, "<init>");
if (!member_descriptor->name) {
JS_free(cx, member_descriptor);
return NULL;
}
class_descriptor->constructors = member_descriptor;
return member_descriptor;
}
JavaMemberDescriptor *
jsj_LookupJavaClassConstructors(JSContext *cx, JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor)
{
if (!class_descriptor->static_members_reflected)
reflect_java_methods_and_fields(cx, jEnv, class_descriptor, JS_TRUE);
return class_descriptor->constructors;
}
JavaMemberDescriptor *
jsj_LookupJavaMemberDescriptorById(JSContext *cx, JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor,
jsid id)
{
JavaMemberDescriptor *member_descriptor;
member_descriptor = jsj_GetClassInstanceMembers(cx, jEnv, class_descriptor);
while (member_descriptor) {
if (id == member_descriptor->id)
return member_descriptor;
member_descriptor = member_descriptor->next;
}
return NULL;
}
JavaMemberDescriptor *
jsj_GetJavaMemberDescriptor(JSContext *cx,
JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor,
jstring member_name_jstr)
{
JavaMemberDescriptor *member_descriptor;
jsid id;
if (!JavaStringToId(cx, jEnv, member_name_jstr, &id))
return NULL;
member_descriptor = jsj_LookupJavaMemberDescriptorById(cx, jEnv, class_descriptor, id);
if (member_descriptor)
return member_descriptor;
member_descriptor = JS_malloc(cx, sizeof(JavaMemberDescriptor));
if (!member_descriptor)
return NULL;
memset(member_descriptor, 0, sizeof(JavaMemberDescriptor));
member_descriptor->name = jsj_DupJavaStringUTF(cx, jEnv, member_name_jstr);
if (!member_descriptor->name) {
JS_free(cx, member_descriptor);
return NULL;
}
member_descriptor->id = id;
member_descriptor->next = class_descriptor->instance_members;
class_descriptor->instance_members = member_descriptor;
return member_descriptor;
}
JSBool
jsj_InitJavaClassReflectionsTable()
{
java_class_reflections =
PR_NewHashTable(64, jsj_HashJavaObject, jsj_JavaObjectComparator,
NULL, NULL, NULL);
if (!java_class_reflections)
return JS_FALSE;
return JS_TRUE;
}

View File

@@ -0,0 +1,658 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1998
* Netscape Communications Corporation. All Rights Reserved.
*/
/* This file is part of the Java-vendor-neutral implementation of LiveConnect
*
* Below is the code that converts between Java and JavaScript values of all
* types.
*/
#include <stdlib.h>
#include <string.h>
#include "prtypes.h"
#include "prprintf.h"
#include "prassert.h"
#include "jsj_private.h" /* LiveConnect internals */
static JSBool
convert_js_obj_to_JSObject_wrapper(JSContext *cx, JNIEnv *jEnv, JSObject *js_obj,
JavaSignature *signature,
int *cost, jobject *java_value)
{
if (!njJSObject) {
if (java_value)
JS_ReportError(cx, "Couldn't convert JavaScript object to an "
"instance of netscape.javascript.JSObject "
"because that class could not be loaded.");
return JS_FALSE;
}
if (!(*jEnv)->IsAssignableFrom(jEnv, njJSObject, signature->java_class))
return JS_FALSE;
if (!java_value)
return JS_TRUE;
*java_value = jsj_WrapJSObject(cx, jEnv, js_obj);
return (*java_value != NULL);
}
jstring
jsj_ConvertJSStringToJavaString(JSContext *cx, JNIEnv *jEnv, JSString *js_str)
{
jstring result;
result = (*jEnv)->NewString(jEnv, JS_GetStringChars(js_str),
JS_GetStringLength(js_str));
if (!result) {
jsj_UnexpectedJavaError(cx, jEnv, "Couldn't construct instance "
"of java.lang.String");
}
return result;
}
/*
* Convert a JS value to an instance of java.lang.Object or one of its subclasses,
* performing any necessary type coercion. If non-trivial coercion is required,
* the cost value is incremented. If the java_value pass-by-reference argument
* is non-NULL, the resulting Java value is stored there.
*
* Returns JS_TRUE if the conversion is possible, JS_FALSE otherwise
*/
JSBool
jsj_ConvertJSValueToJavaObject(JSContext *cx, JNIEnv *jEnv, jsval v, JavaSignature *signature,
int *cost, jobject *java_value)
{
JSString *jsstr;
jclass target_java_class;
PR_ASSERT(signature->type == JAVA_SIGNATURE_CLASS ||
signature->type == JAVA_SIGNATURE_ARRAY);
/* Get the Java type of the target value */
target_java_class = signature->java_class;
if (JSVAL_IS_OBJECT(v)) {
JSObject *js_obj = JSVAL_TO_OBJECT(v);
/* JS null is always assignable to a Java object */
if (!js_obj) {
if (java_value)
*java_value = NULL;
return JS_TRUE;
}
if (JS_InstanceOf(cx, js_obj, &JavaObject_class, 0) ||
JS_InstanceOf(cx, js_obj, &JavaArray_class, 0)) {
/* The source value is a Java object wrapped inside a JavaScript
object. Unwrap the JS object and return the original Java
object if it's class makes it assignment-compatible with the
target class using Java's assignability rules. */
JavaObjectWrapper *java_wrapper = JS_GetPrivate(cx, js_obj);
jobject java_obj = java_wrapper->java_obj;
if ((*jEnv)->IsInstanceOf(jEnv, java_obj, target_java_class)) {
if (java_value)
*java_value = java_obj;
return JS_TRUE;
}
#ifdef LIVECONNECT_IMPROVEMENTS
/* Don't allow wrapped Java objects to be converted to strings */
goto conversion_error;
#else
/* Fall through, to attempt conversion to a Java string */
#endif
} else if (JS_InstanceOf(cx, js_obj, &JavaClass_class, 0)) {
/* We're dealing with the reflection of a Java class */
JavaClassDescriptor *java_class_descriptor = JS_GetPrivate(cx, js_obj);
/* Check if target type is java.lang.Class class */
if ((*jEnv)->IsAssignableFrom(jEnv, jlClass, target_java_class)) {
if (java_value)
*java_value = java_class_descriptor->java_class;
return JS_TRUE;
}
/* Check if target type is netscape.javascript.JSObject wrapper class */
if (convert_js_obj_to_JSObject_wrapper(cx, jEnv, js_obj, signature, cost, java_value))
return JS_TRUE;
/* Fall through, to attempt conversion to a Java string */
} else if (JS_TypeOfValue(cx, v) == JSTYPE_FUNCTION) {
/* JS functions can be wrapped as a netscape.javascript.JSObject */
if (convert_js_obj_to_JSObject_wrapper(cx, jEnv, js_obj, signature, cost, java_value))
return JS_TRUE;
/* That didn't work, so fall through, to attempt conversion to
a java.lang.String ... */
/* Check for a Java object wrapped inside a JS object */
} else {
/* Otherwise, see if the target type is the netscape.javascript.JSObject
wrapper class or one of its subclasses, in which case a
reference is passed to the original JS object by wrapping it
inside an instance of netscape.javascript.JSObject */
if (convert_js_obj_to_JSObject_wrapper(cx, jEnv, js_obj, signature, cost, java_value))
return JS_TRUE;
/* Fall through, to attempt conversion to a Java string */
}
} else if (JSVAL_IS_NUMBER(v)) {
/* JS numbers, integral or not, can be converted to instances of java.lang.Double */
if ((*jEnv)->IsAssignableFrom(jEnv, jlDouble, target_java_class)) {
if (java_value) {
jsdouble d;
if (!JS_ValueToNumber(cx, v, &d))
goto conversion_error;
*java_value = (*jEnv)->NewObject(jEnv, jlDouble, jlDouble_Double, d);
if (!*java_value) {
jsj_UnexpectedJavaError(cx, jEnv,
"Couldn't construct instance of java.lang.Double");
return JS_FALSE;
}
}
#ifdef LIVECONNECT_IMPROVEMENTS
(*cost)++;
#endif
return JS_TRUE;
}
/* Fall through, to attempt conversion to a java.lang.String ... */
} else if (JSVAL_IS_BOOLEAN(v)) {
/* JS boolean values can be converted to instances of java.lang.Boolean */
if ((*jEnv)->IsAssignableFrom(jEnv, jlBoolean, target_java_class)) {
if (java_value) {
JSBool b;
if (!JS_ValueToBoolean(cx, v, &b))
goto conversion_error;
*java_value =
(*jEnv)->NewObject(jEnv, jlBoolean, jlBoolean_Boolean, b);
if (!*java_value) {
jsj_UnexpectedJavaError(cx, jEnv, "Couldn't construct instance "
"of java.lang.Boolean");
return JS_FALSE;
}
}
#ifdef LIVECONNECT_IMPROVEMENTS
(*cost)++;
#endif
return JS_TRUE;
}
/* Fall through, to attempt conversion to a java.lang.String ... */
}
/* If no other conversion is possible, see if the target type is java.lang.String */
if ((*jEnv)->IsAssignableFrom(jEnv, jlString, target_java_class)) {
JSBool is_string = JSVAL_IS_STRING(v);
/* Convert to JS string, if necessary, and then to a Java Unicode string */
jsstr = JS_ValueToString(cx, v);
if (jsstr) {
if (java_value) {
*java_value = jsj_ConvertJSStringToJavaString(cx, jEnv, jsstr);
if (!*java_value)
return JS_FALSE;
}
#ifdef LIVECONNECT_IMPROVEMENTS
if (!is_string)
(*cost)++;
#endif
return JS_TRUE;
}
}
conversion_error:
return JS_FALSE;
}
/* Utility macro for jsj_ConvertJSValueToJavaValue(), below */
#define JSVAL_TO_INTEGRAL_JVALUE(type_name, member_name, member_type, jsval, java_value) \
if (!JSVAL_IS_NUMBER(v)) { \
if (!JS_ConvertValue(cx, v, JSTYPE_NUMBER, &v)) \
goto conversion_error; \
(*cost)++; \
} \
{ \
member_type member_name; \
\
if (JSVAL_IS_INT(v)) { \
jsint ival = JSVAL_TO_INT(v); \
member_name = (member_type) ival; \
\
/* Check to see if the jsval's magnitude is too large to be \
representable in the target java type */ \
if (member_name != ival) \
goto conversion_error; \
} else { \
jdouble dval = *JSVAL_TO_DOUBLE(v); \
member_name = (member_type) dval; \
\
/* Don't allow a non-integral number */ \
/* FIXME - should this be an error ? */ \
if ((jdouble)member_name != dval) \
(*cost)++; \
} \
if (java_value) \
java_value->member_name = member_name; \
}
/*
* Convert a JS value to a Java value of the given type signature. The cost
* variable is incremented if coercion is required, e.g. the source value is
* a string, but the target type is a boolean.
*
* Returns JS_FALSE if no conversion is possible, either because the jsval has
* a type that is wholly incompatible with the Java value, or because a scalar
* jsval can't be represented in a variable of the target type without loss of
* precision, e.g. the source value is "4.2" but the destination type is byte.
* If conversion is not possible and java_value is non-NULL, the JS error
* reporter is called with an appropriate message.
*/
JSBool
jsj_ConvertJSValueToJavaValue(JSContext *cx, JNIEnv *jEnv, jsval v,
JavaSignature *signature,
int *cost, jvalue *java_value)
{
JavaSignatureChar type = signature->type;
switch (type) {
case JAVA_SIGNATURE_BOOLEAN:
if (!JSVAL_IS_BOOLEAN(v)) {
if (!JS_ConvertValue(cx, v, JSTYPE_BOOLEAN, &v))
goto conversion_error;
(*cost)++;
}
if (java_value)
java_value->z = (jboolean)(JSVAL_TO_BOOLEAN(v) == JS_TRUE);
break;
case JAVA_SIGNATURE_SHORT:
JSVAL_TO_INTEGRAL_JVALUE(short, s, jshort, v, java_value);
break;
case JAVA_SIGNATURE_BYTE:
JSVAL_TO_INTEGRAL_JVALUE(byte, b, jbyte, v, java_value);
break;
case JAVA_SIGNATURE_CHAR:
/* A one-character string can be converted into a character */
if (JSVAL_IS_STRING(v) && (JS_GetStringLength(JSVAL_TO_STRING(v)) == 1)) {
v = INT_TO_JSVAL(*JS_GetStringChars(JSVAL_TO_STRING(v)));
}
JSVAL_TO_INTEGRAL_JVALUE(char, c, jchar, v, java_value);
break;
case JAVA_SIGNATURE_INT:
JSVAL_TO_INTEGRAL_JVALUE(int, i, jint, v, java_value);
break;
case JAVA_SIGNATURE_LONG:
JSVAL_TO_INTEGRAL_JVALUE(long, j, jlong, v, java_value);
break;
case JAVA_SIGNATURE_FLOAT:
if (!JSVAL_IS_NUMBER(v)) {
if (!JS_ConvertValue(cx, v, JSTYPE_NUMBER, &v))
goto conversion_error;
(*cost)++;
}
if (java_value) {
if (JSVAL_IS_INT(v))
java_value->f = (jfloat) JSVAL_TO_INT(v);
else
java_value->f = (jfloat) *JSVAL_TO_DOUBLE(v);
}
break;
case JAVA_SIGNATURE_DOUBLE:
if (!JSVAL_IS_NUMBER(v)) {
if (!JS_ConvertValue(cx, v, JSTYPE_NUMBER, &v))
goto conversion_error;
(*cost)++;
}
if (java_value) {
if (JSVAL_IS_INT(v))
java_value->d = (jdouble) JSVAL_TO_INT(v);
else
java_value->d = (jdouble) *JSVAL_TO_DOUBLE(v);
}
break;
case JAVA_SIGNATURE_CLASS:
case JAVA_SIGNATURE_ARRAY:
if (!jsj_ConvertJSValueToJavaObject(cx, jEnv, v, signature, cost, &java_value->l))
goto conversion_error;
break;
default:
PR_ASSERT(0);
return JS_FALSE;
}
/* Success */
return JS_TRUE;
conversion_error:
if (java_value) {
const char *jsval_string;
JSString *jsstr;
jsval_string = NULL;
jsstr = JS_ValueToString(cx, v);
if (jsstr)
jsval_string = JS_GetStringBytes(jsstr);
if (!jsval_string)
jsval_string = "";
JS_ReportError(cx, "Unable to convert JavaScript value %s to "
"Java value of type %s",
jsval_string, signature->name);
}
return JS_FALSE;
}
/*
* A utility routine to create a JavaScript Unicode string from a
* java.lang.String (Unicode) string.
*/
JSString *
jsj_ConvertJavaStringToJSString(JSContext *cx, JNIEnv *jEnv, jstring java_str)
{
JSString *js_str;
jboolean is_copy;
const jchar *ucs2_str;
jchar *copy_ucs2_str;
jsize ucs2_str_len, num_bytes;
ucs2_str_len = (*jEnv)->GetStringLength(jEnv, java_str);
ucs2_str = (*jEnv)->GetStringChars(jEnv, java_str, &is_copy);
if (!ucs2_str) {
jsj_UnexpectedJavaError(cx, jEnv,
"Unable to extract native Unicode from Java string");
return NULL;
}
js_str = NULL;
/* Unlike JS_NewString(), the string data passed into JS_NewUCString() is
not copied, so make a copy of the Unicode character vector. */
num_bytes = ucs2_str_len * sizeof(jchar);
copy_ucs2_str = (jchar*)JS_malloc(cx, num_bytes);
if (!copy_ucs2_str)
goto done;
memcpy(copy_ucs2_str, ucs2_str, num_bytes);
js_str = JS_NewUCString(cx, (jschar*)copy_ucs2_str, ucs2_str_len);
done:
(*jEnv)->ReleaseStringChars(jEnv, java_str, ucs2_str);
return js_str;
}
/*
* Attempt to obtain a JS string representation of a Java object.
* The java_obj argument must be of type java.lang.Object or a subclass.
* If java_obj is a Java string, it's value is simply extracted and
* copied into a JS string. Otherwise, the toString() method is called
* on java_obj.
*/
JSBool
jsj_ConvertJavaObjectToJSString(JSContext *cx,
JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor,
jobject java_obj, jsval *vp)
{
JSString *js_str;
jstring java_str;
jmethodID toString;
/* Create a Java string, unless java_obj is already a java.lang.String */
if ((*jEnv)->IsInstanceOf(jEnv, java_obj, jlString)) {
java_str = java_obj;
} else {
jclass java_class;
java_class = class_descriptor->java_class;
toString = (*jEnv)->GetMethodID(jEnv, java_class, "toString",
"()Ljava/lang/String;");
if (!toString) {
/* All Java objects have a toString method */
jsj_UnexpectedJavaError(cx, jEnv, "No toString() method for class %s!",
class_descriptor->name);
return JS_FALSE;
}
java_str = (*jEnv)->CallObjectMethod(jEnv, java_obj, toString);
if (!java_str) {
jsj_ReportJavaError(cx, jEnv, "toString() method failed");
return JS_FALSE;
}
}
/* Extract Unicode from java.lang.String instance and convert to JS string */
js_str = jsj_ConvertJavaStringToJSString(cx, jEnv, java_str);
if (!js_str)
return JS_FALSE;
*vp = STRING_TO_JSVAL(js_str);
return JS_TRUE;
}
/*
* Convert a Java object to a number by attempting to call the
* doubleValue() method on a Java object to get a double result.
* This usually only works on instances of java.lang.Double, but the code
* is generalized to work with any Java object that supports this method.
*
* Returns JS_TRUE if the call was successful.
* Returns JS_FALSE if conversion is not possible or an error occurs.
*/
JSBool
jsj_ConvertJavaObjectToJSNumber(JSContext *cx, JNIEnv *jEnv,
jobject java_obj, jsval *vp)
{
jdouble d;
jmethodID doubleValue;
#ifndef SUN_VM_IS_NOT_GARBAGE
/* Late breaking news: calling GetMethodID() on an object that doesn't
contain the given method may cause the Sun VM to crash. So we only
call the method on instances of java.lang.Double */
JSBool is_Double;
/* Make sure that we have a java.lang.Double */
is_Double = (*jEnv)->IsInstanceOf(jEnv, java_obj, jlDouble);
if (!is_Double)
return JS_FALSE;
doubleValue = jlDouble_doubleValue;
#else
doubleValue = (*jEnv)->GetMethodID(jEnv, java_obj, "doubleValue", "()D");
if (!doubleValue)
return JS_FALSE;
#endif
d = (*jEnv)->CallDoubleMethod(jEnv, java_obj, doubleValue);
if ((*jEnv)->ExceptionOccurred(jEnv)) {
jsj_UnexpectedJavaError(cx, jEnv, "doubleValue() method failed");
return JS_FALSE;
}
return JS_NewDoubleValue(cx, d, vp);
}
/*
* Convert a Java object to a boolean by attempting to call the
* booleanValue() method on a Java object to get a boolean result.
* This usually only works on instances of java.lang.Boolean, but the code
* is generalized to work with any Java object that supports this method.
*
* Returns JS_TRUE if the call was successful.
* Returns JS_FALSE if conversion is not possible or an error occurs.
*/
extern JSBool
jsj_ConvertJavaObjectToJSBoolean(JSContext *cx, JNIEnv *jEnv,
jobject java_obj, jsval *vp)
{
jboolean b;
jmethodID booleanValue;
#ifndef SUN_VM_IS_NOT_GARBAGE
/* Late breaking news: calling GetMethodID() on an object that doesn't
contain the given method may cause the Sun VM to crash. So we only
call the method on instances of java.lang.Boolean */
JSBool is_Boolean;
/* Make sure that we have a java.lang.Boolean */
is_Boolean = (*jEnv)->IsInstanceOf(jEnv, java_obj, jlBoolean);
if (!is_Boolean)
return JS_FALSE;
booleanValue = jlBoolean_booleanValue;
#else
booleanValue = (*jEnv)->GetMethodID(jEnv, java_obj, "booleanValue", "()Z");
if (!booleanValue)
return JS_FALSE;
#endif
b = (*jEnv)->CallBooleanMethod(jEnv, java_obj, booleanValue);
if ((*jEnv)->ExceptionOccurred(jEnv)) {
jsj_UnexpectedJavaError(cx, jEnv, "booleanValue() method failed");
return JS_FALSE;
}
*vp = BOOLEAN_TO_JSVAL(b);
return JS_TRUE;
}
/*
* Reflect a Java object into a JS value. The source object, java_obj, must
* be of type java.lang.Object or a subclass and may, therefore, be an array.
*/
JSBool
jsj_ConvertJavaObjectToJSValue(JSContext *cx, JNIEnv *jEnv,
jobject java_obj, jsval *vp)
{
jclass java_class;
JSObject *js_obj;
/* A null in Java-land is also null in JS */
if (!java_obj) {
*vp = JSVAL_NULL;
return JS_TRUE;
}
java_class = (*jEnv)->GetObjectClass(jEnv, java_obj);
/*
* If it's an instance of netscape.javascript.JSObject, i.e. a wrapper
* around a JS object that has been passed into the Java world, unwrap
* it to obtain the original JS object.
*/
if (njJSObject && (*jEnv)->IsInstanceOf(jEnv, java_obj, njJSObject)) {
js_obj = (JSObject *)((*jEnv)->GetIntField(jEnv, java_obj, njJSObject_internal));
PR_ASSERT(js_obj);
if (!js_obj)
return JS_FALSE;
*vp = OBJECT_TO_JSVAL(js_obj);
return JS_TRUE;
}
/*
* Instances of java.lang.String are wrapped so we can call methods on
* them, but they convert to a JS string if used in a string context.
*/
/* TODO - let's get rid of this annoying "feature" */
/* otherwise, wrap it inside a JavaObject */
js_obj = jsj_WrapJavaObject(cx, jEnv, java_obj, java_class);
if (!js_obj)
return JS_FALSE;
*vp = OBJECT_TO_JSVAL(js_obj);
return JS_TRUE;
}
/*
* Convert a Java value (primitive or object) to a JS value.
*
* This is usually an infallible operation, but JS_FALSE is returned
* on an out-of-memory condition and the error reporter is called.
*/
JSBool
jsj_ConvertJavaValueToJSValue(JSContext *cx, JNIEnv *jEnv,
JavaSignature *signature,
jvalue *java_value,
jsval *vp)
{
int32 ival32;
switch (signature->type) {
case JAVA_SIGNATURE_VOID:
*vp = JSVAL_VOID;
return JS_TRUE;
case JAVA_SIGNATURE_BYTE:
*vp = INT_TO_JSVAL((jsint)java_value->b);
return JS_TRUE;
case JAVA_SIGNATURE_CHAR:
*vp = INT_TO_JSVAL((jsint)java_value->c);
return JS_TRUE;
case JAVA_SIGNATURE_SHORT:
*vp = INT_TO_JSVAL((jsint)java_value->s);
return JS_TRUE;
case JAVA_SIGNATURE_INT:
ival32 = java_value->i;
if (INT_FITS_IN_JSVAL(ival32)) {
*vp = INT_TO_JSVAL((jsint) ival32);
return JS_TRUE;
} else {
return JS_NewDoubleValue(cx, ival32, vp);
}
case JAVA_SIGNATURE_BOOLEAN:
*vp = BOOLEAN_TO_JSVAL((JSBool) java_value->z);
return JS_TRUE;
case JAVA_SIGNATURE_LONG:
return JS_NewDoubleValue(cx, (jsdouble)java_value->j, vp);
case JAVA_SIGNATURE_FLOAT:
return JS_NewDoubleValue(cx, java_value->f, vp);
case JAVA_SIGNATURE_DOUBLE:
return JS_NewDoubleValue(cx, java_value->d, vp);
case JAVA_SIGNATURE_CLASS:
case JAVA_SIGNATURE_ARRAY:
return jsj_ConvertJavaObjectToJSValue(cx, jEnv, java_value->l, vp);
default:
PR_ASSERT(0);
return JS_FALSE;
}
}

View File

@@ -0,0 +1,383 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1998
* Netscape Communications Corporation. All Rights Reserved.
*/
/*
* This file is part of the Java-vendor-neutral implementation of LiveConnect
*
* It contains the code used to reflect Java fields as properties of
* JavaObject objects and the code to access those fields.
*
*/
#include <stdlib.h>
#include "prtypes.h"
#include "prprintf.h"
#include "prassert.h"
#include "jsj_private.h" /* LiveConnect internals */
/*
* Add a single field, described by java_field, to the JavaMemberDescriptor
* named by field_name within the given JavaClassDescriptor.
*
* Returns JS_TRUE on success. Otherwise, returns JS_FALSE and reports an error.
*/
static JSBool
add_java_field_to_class_descriptor(JSContext *cx,
JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor,
jstring field_name_jstr,
jobject java_field, /* a java.lang.reflect.Field */
jint modifiers)
{
jclass fieldType;
jfieldID fieldID;
jclass java_class;
JSBool is_static_field;
JavaMemberDescriptor *member_descriptor = NULL;
const char *sig_cstr = NULL;
const char *field_name = NULL;
JavaSignature *signature = NULL;
JavaFieldSpec *field_spec = NULL;
is_static_field = modifiers & ACC_STATIC;
if (is_static_field) {
member_descriptor = jsj_GetJavaStaticMemberDescriptor(cx, jEnv, class_descriptor, field_name_jstr);
} else {
member_descriptor = jsj_GetJavaMemberDescriptor(cx, jEnv, class_descriptor, field_name_jstr);
}
if (!member_descriptor)
goto error;
field_spec = (JavaFieldSpec*)JS_malloc(cx, sizeof(JavaFieldSpec));
if (!field_spec)
goto error;
field_spec->modifiers = modifiers;
/* Get the Java class corresponding to the type of the field */
fieldType = (*jEnv)->CallObjectMethod(jEnv, java_field, jlrField_getType);
if (!fieldType) {
jsj_UnexpectedJavaError(cx, jEnv,
"Unable to determine type of field using"
" java.lang.reflect.Field.getType()");
goto error;
}
signature = jsj_GetJavaClassDescriptor(cx, jEnv, fieldType);
if (!signature)
goto error;
field_spec->signature = signature;
field_name = jsj_DupJavaStringUTF(cx, jEnv, field_name_jstr);
if (!field_name)
goto error;
field_spec->name = field_name;
/* Compute the JNI-style (string-based) signature of the field type */
sig_cstr = jsj_ConvertJavaSignatureToString(cx, signature);
if (!sig_cstr)
goto error;
/* Compute the JNI fieldID and cache it for quick field access */
java_class = class_descriptor->java_class;
if (is_static_field)
fieldID = (*jEnv)->GetStaticFieldID(jEnv, java_class, field_name, sig_cstr);
else
fieldID = (*jEnv)->GetFieldID(jEnv, java_class, field_name, sig_cstr);
if (!fieldID) {
jsj_UnexpectedJavaError(cx, jEnv,
"Can't get Java field ID for class %s, field %s (sig=%s)",
class_descriptor->name, field_name, sig_cstr);
goto error;
}
field_spec->fieldID = fieldID;
JS_free(cx, (char*)sig_cstr);
member_descriptor->field = field_spec;
/* Success */
return JS_TRUE;
error:
if (field_spec) {
JS_FREE_IF(cx, (char*)field_spec->name);
JS_free(cx, field_spec);
}
JS_FREE_IF(cx, (char*)sig_cstr);
if (signature)
jsj_ReleaseJavaClassDescriptor(cx, jEnv, signature);
return JS_FALSE;
}
/*
* Free up a JavaFieldSpec and all its resources.
*/
void
jsj_DestroyFieldSpec(JSContext *cx, JNIEnv *jEnv, JavaFieldSpec *field)
{
JS_FREE_IF(cx, (char*)field->name);
jsj_ReleaseJavaClassDescriptor(cx, jEnv, field->signature);
JS_free(cx, field);
}
/*
* Add a JavaMemberDescriptor to the collection of members in class_descriptor
* for every public field of the identified Java class. (A separate collection
* is kept in class_descriptor for static and instance members.)
* If reflect_only_static_fields is set, instance fields are not reflected. If
* it isn't set, only instance fields are reflected and static fields are not
* reflected.
*
* Returns JS_TRUE on success. Otherwise, returns JS_FALSE and reports an error.
*/
JSBool
jsj_ReflectJavaFields(JSContext *cx, JNIEnv *jEnv, JavaClassDescriptor *class_descriptor,
JSBool reflect_only_static_fields)
{
int i;
JSBool ok;
jint modifiers;
jobject java_field;
jstring field_name_jstr;
jarray joFieldArray;
jsize num_fields;
jclass java_class;
/* Get a java array of java.lang.reflect.Field objects, by calling
java.lang.Class.getFields(). */
java_class = class_descriptor->java_class;
joFieldArray = (*jEnv)->CallObjectMethod(jEnv, java_class, jlClass_getFields);
if (!joFieldArray) {
jsj_UnexpectedJavaError(cx, jEnv,
"Can't determine Java object's fields "
"using java.lang.Class.getFields()");
return JS_FALSE;
}
/* Iterate over the class fields */
num_fields = (*jEnv)->GetArrayLength(jEnv, joFieldArray);
for (i = 0; i < num_fields; i++) {
/* Get the i'th reflected field */
java_field = (*jEnv)->GetObjectArrayElement(jEnv, joFieldArray, i);
if (!java_field) {
jsj_UnexpectedJavaError(cx, jEnv, "Can't access a Field[] array");
return JS_FALSE;
}
/* Get the field modifiers, e.g. static, public, private, etc. */
modifiers = (*jEnv)->CallIntMethod(jEnv, java_field, jlrField_getModifiers);
if ((*jEnv)->ExceptionOccurred(jEnv)) {
jsj_UnexpectedJavaError(cx, jEnv,
"Can't access a Field's modifiers using"
"java.lang.reflect.Field.getModifiers()");
return JS_FALSE;
}
/* Don't allow access to private or protected Java fields. */
if (!(modifiers & ACC_PUBLIC))
continue;
/* Reflect all instance fields or all static fields, but not both */
if (reflect_only_static_fields != ((modifiers & ACC_STATIC) != 0))
continue;
/* Determine the unqualified name of the field */
field_name_jstr = (*jEnv)->CallObjectMethod(jEnv, java_field, jlrField_getName);
if (!field_name_jstr) {
jsj_UnexpectedJavaError(cx, jEnv,
"Can't obtain a Field's name"
"java.lang.reflect.Field.getName()");
return JS_FALSE;
}
/* Add a JavaFieldSpec object to the JavaClassDescriptor */
ok = add_java_field_to_class_descriptor(cx, jEnv, class_descriptor, field_name_jstr,
java_field, modifiers);
if (!ok)
return JS_FALSE;
}
/* Success */
return JS_TRUE;
}
/*
* Read the value of a Java field and return it as a JavaScript value.
* If the field is static, then java_obj is a Java class, otherwise
* it's a Java instance object.
*
* Returns JS_TRUE on success. Otherwise, returns JS_FALSE and reports an error.
*/
JSBool
jsj_GetJavaFieldValue(JSContext *cx, JNIEnv *jEnv, JavaFieldSpec *field_spec,
jobject java_obj, jsval *vp)
{
JSBool is_static_field;
jvalue java_value;
JavaSignature *signature;
JavaSignatureChar field_type;
jfieldID fieldID = field_spec->fieldID;
is_static_field = field_spec->modifiers & ACC_STATIC;
#define GET_JAVA_FIELD(Type,member) \
PR_BEGIN_MACRO \
if (is_static_field) \
java_value.member = \
(*jEnv)->GetStatic##Type##Field(jEnv, java_obj, fieldID); \
else \
java_value.member = \
(*jEnv)->Get##Type##Field(jEnv, java_obj, fieldID); \
if ((*jEnv)->ExceptionOccurred(jEnv)) { \
jsj_ReportJavaError(cx, jEnv, "Error reading Java field"); \
return JS_FALSE; \
} \
PR_END_MACRO
signature = field_spec->signature;
field_type = signature->type;
switch(field_type) {
case JAVA_SIGNATURE_BYTE:
GET_JAVA_FIELD(Byte,b);
break;
case JAVA_SIGNATURE_CHAR:
GET_JAVA_FIELD(Char,c);
break;
case JAVA_SIGNATURE_SHORT:
GET_JAVA_FIELD(Short,s);
break;
case JAVA_SIGNATURE_INT:
GET_JAVA_FIELD(Int,i);
break;
case JAVA_SIGNATURE_BOOLEAN:
GET_JAVA_FIELD(Boolean,z);
break;
case JAVA_SIGNATURE_LONG:
GET_JAVA_FIELD(Long,j);
break;
case JAVA_SIGNATURE_FLOAT:
GET_JAVA_FIELD(Float,f);
break;
case JAVA_SIGNATURE_DOUBLE:
GET_JAVA_FIELD(Double,d);
break;
case JAVA_SIGNATURE_CLASS:
case JAVA_SIGNATURE_ARRAY:
GET_JAVA_FIELD(Object,l);
break;
#undef GET_JAVA_FIELD
default:
PR_ASSERT(0); /* Unknown java type signature */
return JS_FALSE;
}
return jsj_ConvertJavaValueToJSValue(cx, jEnv, signature, &java_value, vp);
}
JSBool
jsj_SetJavaFieldValue(JSContext *cx, JNIEnv *jEnv, JavaFieldSpec *field_spec,
jclass java_obj, jsval js_val)
{
JSBool is_static_field;
int dummy_cost;
jvalue java_value;
JavaSignature *signature;
JavaSignatureChar field_type;
jfieldID fieldID = field_spec->fieldID;
is_static_field = field_spec->modifiers & ACC_STATIC;
#define SET_JAVA_FIELD(Type,member) \
PR_BEGIN_MACRO \
if (is_static_field) { \
(*jEnv)->SetStatic##Type##Field(jEnv, java_obj, fieldID, \
java_value.member); \
} else { \
(*jEnv)->Set##Type##Field(jEnv, java_obj, fieldID,java_value.member);\
} \
if ((*jEnv)->ExceptionOccurred(jEnv)) { \
jsj_ReportJavaError(cx, jEnv, "Error assigning to Java field"); \
return JS_FALSE; \
} \
PR_END_MACRO
signature = field_spec->signature;
if (!jsj_ConvertJSValueToJavaValue(cx, jEnv, js_val, signature, &dummy_cost, &java_value))
return JS_FALSE;
field_type = signature->type;
switch(field_type) {
case JAVA_SIGNATURE_BYTE:
SET_JAVA_FIELD(Byte,b);
break;
case JAVA_SIGNATURE_CHAR:
SET_JAVA_FIELD(Char,c);
break;
case JAVA_SIGNATURE_SHORT:
SET_JAVA_FIELD(Short,s);
break;
case JAVA_SIGNATURE_INT:
SET_JAVA_FIELD(Int,i);
break;
case JAVA_SIGNATURE_BOOLEAN:
SET_JAVA_FIELD(Boolean,z);
break;
case JAVA_SIGNATURE_LONG:
SET_JAVA_FIELD(Long,j);
break;
case JAVA_SIGNATURE_FLOAT:
SET_JAVA_FIELD(Float,f);
break;
case JAVA_SIGNATURE_DOUBLE:
SET_JAVA_FIELD(Double,d);
break;
case JAVA_SIGNATURE_CLASS:
case JAVA_SIGNATURE_ARRAY:
SET_JAVA_FIELD(Object,l);
break;
#undef SET_JAVA_FIELD
default:
PR_ASSERT(0); /* Unknown java type signature */
return JS_FALSE;
}
return JS_TRUE;
}

File diff suppressed because it is too large Load Diff

View File

@@ -0,0 +1,507 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1998
* Netscape Communications Corporation. All Rights Reserved.
*/
/*
* This file is part of the Java-vendor-neutral implementation of LiveConnect
*
* Declarations of private (internal) functions/data/types for
* JavaScript <==> Java communication.
*
*/
#ifndef _JSJAVA_PVT_H
#define _JSJAVA_PVT_H
#include "prhash.h" /* NSPR hash-tables */
#include "jni.h" /* Java Native Interface */
#include "jsapi.h" /* JavaScript engine API */
/*************************** Type Declarations ******************************/
/* Forward type declarations */
typedef struct JavaMemberDescriptor JavaMemberDescriptor;
typedef struct JavaMethodSpec JavaMethodSpec;
typedef struct JavaClassDescriptor JavaClassDescriptor;
typedef struct JavaClassDescriptor JavaSignature;
typedef struct JSJCallbacks JSJCallbacks;
typedef struct CapturedJSError CapturedJSError;
typedef struct JavaPackageDef JavaPackageDef;
typedef struct JSJavaThreadState JSJavaThreadState;
typedef struct JSJavaVM JSJavaVM;
typedef struct JavaMemberVal JavaMemberVal;
/*
* This enum uses the same character encoding used by the JDK to encode
* Java type signatures, but the enum is easier to debug/compile with.
*/
typedef enum {
JAVA_SIGNATURE_ARRAY = '[',
JAVA_SIGNATURE_BYTE = 'B',
JAVA_SIGNATURE_CHAR = 'C',
JAVA_SIGNATURE_CLASS = 'L',
JAVA_SIGNATURE_FLOAT = 'F',
JAVA_SIGNATURE_DOUBLE = 'D',
JAVA_SIGNATURE_INT = 'I',
JAVA_SIGNATURE_LONG = 'J',
JAVA_SIGNATURE_SHORT = 'S',
JAVA_SIGNATURE_VOID = 'V',
JAVA_SIGNATURE_BOOLEAN = 'Z',
JAVA_SIGNATURE_UNKNOWN = 0
} JavaSignatureChar;
/* The signature of a Java method consists of the signatures of all its
arguments and its return type signature. */
typedef struct JavaMethodSignature {
jsize num_args; /* Length of arg_signatures array */
JavaSignature ** arg_signatures; /* Array of argument signatures */
JavaSignature * return_val_signature; /* Return type signature */
} JavaMethodSignature;
/* A descriptor for the reflection of a single Java field */
typedef struct JavaFieldSpec {
jfieldID fieldID; /* JVM opaque access handle for field */
JavaSignature * signature; /* Java type of field */
int modifiers; /* Bitfield indicating field qualifiers */
const char * name; /* UTF8; TODO - Should support Unicode field names */
} JavaFieldSpec;
/* A descriptor for the reflection of a single Java method.
Each overloaded method has a separate corresponding JavaMethodSpec. */
typedef struct JavaMethodSpec {
jmethodID methodID; /* JVM opaque access handle for method */
JavaMethodSignature signature;
const char * name; /* UTF8; TODO - Should support Unicode method names */
JavaMethodSpec * next; /* next method in chain of overloaded methods */
} JavaMethodSpec;
/*
* A descriptor for the reflection of a single member of a Java object.
* This can represent one or more Java methods and/or a single field.
* (When there is more than one method attached to a single JavaMemberDescriptor
* they are overloaded methods sharing the same simple name.) This same
* descriptor type is used for both static or instance members.
*/
typedef struct JavaMemberDescriptor {
const char * name; /* simple name of field and/or method */
jsid id; /* hashed name for quick JS property lookup */
JavaFieldSpec * field; /* field with the given name, if any */
JavaMethodSpec * methods; /* Overloaded methods which share the same name, if any */
JavaMemberDescriptor * next; /* next descriptor in same defining class */
} JavaMemberDescriptor;
/* This is the native portion of a reflected Java class */
typedef struct JavaClassDescriptor {
const char * name; /* Name of class, e.g. "java/lang/Byte" */
JavaSignatureChar type; /* class category: primitive type, object, array */
jclass java_class; /* Opaque JVM handle to corresponding java.lang.Class */
int num_instance_members;
int num_static_members;
JSBool instance_members_reflected;
JavaMemberDescriptor * instance_members;
JSBool static_members_reflected;
JavaMemberDescriptor * static_members;
JavaMemberDescriptor * constructors;
int modifiers; /* Class declaration qualifiers,
e.g. abstract, private */
int ref_count; /* # of references to this struct */
JavaSignature * array_component_signature; /* Only non-NULL for array classes */
} JavaClassDescriptor;
/* This is the native portion of a reflected Java method or field */
typedef struct JavaMemberVal {
jsval field_val; /* Captured value of Java field */
jsval invoke_method_func_val; /* JSFunction wrapper around Java method invoker */
JavaMemberDescriptor * descriptor;
JavaMemberVal * next;
} JavaMemberVal;
/* This is the native portion of a reflected Java object */
typedef struct {
jobject java_obj; /* Opaque JVM ref to Java object */
JavaClassDescriptor * class_descriptor; /* Java class info */
JavaMemberVal * members; /* Reflected methods and fields */
} JavaObjectWrapper;
/* These are definitions of the Java class/method/field modifier bits.
These really shouldn't be hard-coded here. Rather,
they should be read from java.lang.reflect.Modifier */
#define ACC_PUBLIC 0x0001 /* visible to everyone */
#define ACC_STATIC 0x0008 /* instance variable is static */
#define ACC_FINAL 0x0010 /* no further subclassing,overriding */
#define ACC_INTERFACE 0x0200 /* class is an interface */
#define ACC_ABSTRACT 0x0400 /* no definition provided */
/* A JSJavaVM structure must be created for each Java VM that is accessed
via LiveConnect */
typedef struct JSJavaVM {
/* TODO - all LiveConnect global variables should be migrated into this
structure in order to allow more than one LiveConnect-enabled
Java VM to exist within the same process. */
JavaVM * java_vm;
JNIEnv * main_thread_env; /* Main-thread Java environment */
JSBool jsj_created_java_vm;
int num_attached_threads;
JSJavaVM * next; /* next VM among all created VMs */
} JSJavaVM;
/* Per-thread state that encapsulates the connection to the Java VM */
typedef struct JSJavaThreadState {
const char * name; /* Thread name, for debugging */
JSJavaVM * jsjava_vm; /* All per-JVM state */
JNIEnv * jEnv; /* Per-thread opaque handle to Java VM */
CapturedJSError * pending_js_errors; /* JS errors to be thrown as Java exceptions */
JSContext * cx; /* current JS context for thread */
JSJavaThreadState * next; /* next thread state among all created threads */
} JSJavaThreadState;
/******************************** Globals ***********************************/
extern JNIEnv *jENV;
extern JSJCallbacks *JSJ_callbacks;
/* JavaScript classes that reflect Java objects */
extern JSClass JavaObject_class;
extern JSClass JavaArray_class;
extern JSClass JavaClass_class;
/*
* Opaque JVM handles to Java classes, methods and objects required for
* Java reflection. These are computed and cached during initialization.
* TODO: These should be moved inside the JSJavaVM struct
*/
extern jclass jlObject; /* java.lang.Object */
extern jclass jlrConstructor; /* java.lang.reflect.Constructor */
extern jclass jlThrowable; /* java.lang.Throwable */
extern jclass jlSystem; /* java.lang.System */
extern jclass jlClass; /* java.lang.Class */
extern jclass jlBoolean; /* java.lang.Boolean */
extern jclass jlDouble; /* java.lang.Double */
extern jclass jlString; /* java.lang.String */
extern jclass njJSObject; /* netscape.javascript.JSObject */
extern jclass njJSException; /* netscape.javascript.JSException */
extern jclass njJSUtil; /* netscape.javascript.JSUtil */
extern jmethodID jlClass_getMethods; /* java.lang.Class.getMethods() */
extern jmethodID jlClass_getConstructors; /* java.lang.Class.getConstructors() */
extern jmethodID jlClass_getFields; /* java.lang.Class.getFields() */
extern jmethodID jlClass_getName; /* java.lang.Class.getName() */
extern jmethodID jlClass_getComponentType; /* java.lang.Class.getComponentType() */
extern jmethodID jlClass_getModifiers; /* java.lang.Class.getModifiers() */
extern jmethodID jlClass_isArray; /* java.lang.Class.isArray() */
extern jmethodID jlrMethod_getName; /* java.lang.reflect.Method.getName() */
extern jmethodID jlrMethod_getParameterTypes; /* java.lang.reflect.Method.getParameterTypes() */
extern jmethodID jlrMethod_getReturnType; /* java.lang.reflect.Method.getReturnType() */
extern jmethodID jlrMethod_getModifiers; /* java.lang.reflect.Method.getModifiers() */
extern jmethodID jlrConstructor_getParameterTypes; /* java.lang.reflect.Constructor.getParameterTypes() */
extern jmethodID jlrConstructor_getModifiers; /* java.lang.reflect.Constructor.getModifiers() */
extern jmethodID jlrField_getName; /* java.lang.reflect.Field.getName() */
extern jmethodID jlrField_getType; /* java.lang.reflect.Field.getType() */
extern jmethodID jlrField_getModifiers; /* java.lang.reflect.Field.getModifiers() */
extern jmethodID jlThrowable_getMessage; /* java.lang.Throwable.getMessage() */
extern jmethodID jlThrowable_toString; /* java.lang.Throwable.toString() */
extern jmethodID jlBoolean_Boolean; /* java.lang.Boolean constructor */
extern jmethodID jlBoolean_booleanValue; /* java.lang.Boolean.booleanValue() */
extern jmethodID jlDouble_Double; /* java.lang.Double constructor */
extern jmethodID jlDouble_doubleValue; /* java.lang.Double.doubleValue() */
extern jmethodID jlSystem_identityHashCode; /* java.lang.System.identityHashCode() */
extern jobject jlVoid_TYPE; /* java.lang.Void.TYPE value */
extern jmethodID njJSException_JSException; /* netscape.javascipt.JSexception constructor */
extern jmethodID njJSObject_JSObject; /* netscape.javascript.JSObject constructor */
extern jmethodID njJSUtil_getStackTrace; /* netscape.javascript.JSUtil.getStackTrace() */
extern jfieldID njJSObject_internal; /* netscape.javascript.JSObject.internal */
extern jfieldID njJSException_lineno; /* netscape.javascript.JSException.lineno */
extern jfieldID njJSException_tokenIndex; /* netscape.javascript.JSException.tokenIndex */
extern jfieldID njJSException_source; /* netscape.javascript.JSException.source */
extern jfieldID njJSException_filename; /* netscape.javascript.JSException.filename */
/**************** Java <==> JS conversions and Java types *******************/
extern JSBool
jsj_ComputeJavaClassSignature(JSContext *cx,
JavaSignature *signature,
jclass java_class);
extern const char *
jsj_ConvertJavaSignatureToString(JSContext *cx, JavaSignature *signature);
extern const char *
jsj_ConvertJavaSignatureToHRString(JSContext *cx,
JavaSignature *signature);
extern JavaMethodSignature *
jsj_InitJavaMethodSignature(JSContext *cx, JNIEnv *jEnv, jobject method,
JavaMethodSignature *method_signature);
extern const char *
jsj_ConvertJavaMethodSignatureToString(JSContext *cx,
JavaMethodSignature *method_signature);
extern const char *
jsj_ConvertJavaMethodSignatureToHRString(JSContext *cx,
const char *method_name,
JavaMethodSignature *method_signature);
extern void
jsj_PurgeJavaMethodSignature(JSContext *cx, JNIEnv *jEnv, JavaMethodSignature *signature);
extern JSBool
jsj_ConvertJSValueToJavaValue(JSContext *cx, JNIEnv *jEnv, jsval v, JavaSignature *signature,
int *cost, jvalue *java_value);
extern JSBool
jsj_ConvertJSValueToJavaObject(JSContext *cx, JNIEnv *jEnv, jsval v, JavaSignature *signature,
int *cost, jobject *java_value);
extern jstring
jsj_ConvertJSStringToJavaString(JSContext *cx, JNIEnv *jEnv, JSString *js_str);
extern JSBool
jsj_ConvertJavaValueToJSValue(JSContext *cx, JNIEnv *jEnv, JavaSignature *signature,
jvalue *java_value, jsval *vp);
extern JSBool
jsj_ConvertJavaObjectToJSValue(JSContext *cx, JNIEnv *jEnv,
jobject java_obj, jsval *vp);
extern JSBool
jsj_ConvertJavaObjectToJSString(JSContext *cx, JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor,
jobject java_obj, jsval *vp);
extern JSBool
jsj_ConvertJavaObjectToJSNumber(JSContext *cx, JNIEnv *jEnv,
jobject java_obj, jsval *vp);
extern JSBool
jsj_ConvertJavaObjectToJSBoolean(JSContext *cx, JNIEnv *jEnv,
jobject java_obj, jsval *vp);
/************************ Java package reflection **************************/
extern JSBool
jsj_init_JavaPackage(JSContext *, JSObject *,
JavaPackageDef *predefined_packages);
/************************* Java class reflection ***************************/
extern JSBool
jsj_init_JavaClass(JSContext *cx, JSObject *global_obj);
const char *
jsj_GetJavaClassName(JSContext *cx, JNIEnv *jEnv, jclass java_class);
extern JavaClassDescriptor *
jsj_GetJavaClassDescriptor(JSContext *cx, JNIEnv *jEnv, jclass java_class);
extern void
jsj_ReleaseJavaClassDescriptor(JSContext *cx, JNIEnv *jEnv, JavaClassDescriptor *class_descriptor);
extern JSObject *
jsj_define_JavaClass(JSContext *cx, JNIEnv *jEnv, JSObject *obj,
const char *unqualified_class_name,
jclass jclazz);
extern JavaMemberDescriptor *
jsj_GetJavaMemberDescriptor(JSContext *cx,
JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor,
jstring member_name);
/* extern JavaMemberDescriptor *
jsj_LookupJavaClassMember(JSContext *cx,
JavaClassDescriptor *class_descriptor,
const char *member_name);*/
extern JavaMemberDescriptor *
jsj_LookupJavaMemberDescriptorById(JSContext *cx, JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor,
jsid id);
/* extern JavaMemberDescriptor *
jsj_LookupJavaStaticMemberDescriptor(JSContext *cx,
JavaClassDescriptor *class_descriptor,
jstring member_name); */
extern JavaMemberDescriptor *
jsj_LookupJavaStaticMemberDescriptorById(JSContext *cx, JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor,
jsid id);
extern JavaMemberDescriptor *
jsj_GetJavaStaticMemberDescriptor(JSContext *cx, JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor,
jstring member_name);
extern JavaMemberDescriptor *
jsj_GetJavaClassConstructors(JSContext *cx,
JavaClassDescriptor *class_descriptor);
extern JavaMemberDescriptor *
jsj_LookupJavaClassConstructors(JSContext *cx, JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor);
extern JavaMemberDescriptor *
jsj_GetClassInstanceMembers(JSContext *cx, JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor);
extern JavaMemberDescriptor *
jsj_GetClassStaticMembers(JSContext *cx, JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor);
extern JSBool
jsj_InitJavaClassReflectionsTable();
/************************* Java field reflection ***************************/
extern JSBool
jsj_GetJavaFieldValue(JSContext *cx, JNIEnv *jEnv, JavaFieldSpec *field_spec,
jobject java_obj, jsval *vp);
extern JSBool
jsj_SetJavaFieldValue(JSContext *cx, JNIEnv *jEnv, JavaFieldSpec *field_spec,
jobject java_obj, jsval js_val);
extern JSBool
jsj_ReflectJavaFields(JSContext *cx, JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor,
JSBool reflect_only_static_fields);
extern void
jsj_DestroyFieldSpec(JSContext *cx, JNIEnv *jEnv, JavaFieldSpec *field);
/************************* Java method reflection ***************************/
extern JSBool
jsj_JavaInstanceMethodWrapper(JSContext *cx, JSObject *obj,
uintN argc, jsval *argv, jsval *vp);
extern JSBool
jsj_JavaStaticMethodWrapper(JSContext *cx, JSObject *obj,
uintN argc, jsval *argv, jsval *vp);
extern JSBool
jsj_JavaConstructorWrapper(JSContext *cx, JSObject *obj,
uintN argc, jsval *argv, jsval *vp);
extern JSBool
jsj_ReflectJavaMethods(JSContext *cx, JNIEnv *jEnv,
JavaClassDescriptor *class_descriptor,
JSBool reflect_only_static_methods);
extern void
jsj_DestroyMethodSpec(JSContext *cx, JNIEnv *jEnv, JavaMethodSpec *method_spec);
/************************* Java member reflection ***************************/
extern JSBool
jsj_init_JavaMember(JSContext *, JSObject *);
extern JSBool
jsj_ReflectJavaMethodsAndFields(JSContext *cx, JavaClassDescriptor *class_descriptor,
JSBool reflect_only_statics);
/************************* Java object reflection **************************/
extern JSBool
jsj_init_JavaObject(JSContext *, JSObject *);
extern JSObject *
jsj_WrapJavaObject(JSContext *cx, JNIEnv *jEnv, jobject java_obj, jclass java_class);
extern JSBool
JavaObject_convert(JSContext *cx, JSObject *obj, JSType type, jsval *vp);
extern void
JavaObject_finalize(JSContext *cx, JSObject *obj);
extern JSBool
JavaObject_resolve(JSContext *cx, JSObject *obj, jsval id);
extern JSBool
JavaObject_enumerate(JSContext *cx, JSObject *obj);
extern JSBool
JavaObject_getProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp);
extern JSBool
JavaObject_getPropertyById(JSContext *cx, JSObject *obj, jsid id, jsval *vp);
/************************* Java array reflection ***************************/
extern JSBool
jsj_init_JavaArray(JSContext *cx, JSObject *global_obj);
extern JSBool
jsj_GetJavaArrayElement(JSContext *cx, JNIEnv *jEnv, jarray java_array,
jsize index, JavaSignature *array_component_signature,
jsval *vp);
extern JSBool
jsj_SetJavaArrayElement(JSContext *cx, JNIEnv *jEnv, jarray java_array,
jsize index, JavaSignature *array_component_signature,
jsval js_val);
/********************* JavaScript object reflection ************************/
extern jobject
jsj_WrapJSObject(JSContext *cx, JNIEnv *jEnv, JSObject *js_obj);
extern void
jsj_ClearPendingJSErrors(JSJavaThreadState *jsj_env);
extern JSBool
jsj_ReportUncaughtJSException(JSContext *cx, JNIEnv *jEnv, jthrowable java_exception);
/**************************** Utilities ************************************/
extern void
jsj_ReportJavaError(JSContext *cx, JNIEnv *env, const char *format, ...);
extern void
jsj_UnexpectedJavaError(JSContext *cx, JNIEnv *env, const char *format, ...);
extern const char *
jsj_GetJavaErrorMessage(JNIEnv *env);
extern void
jsj_LogError(const char *error_msg);
PR_CALLBACK prhashcode
jsj_HashJavaObject(const void *key);
PR_CALLBACK intN
jsj_JavaObjectComparator(const void *v1, const void *v2);
extern JSJavaThreadState *
jsj_MapJavaThreadToJSJavaThreadState(JNIEnv *jEnv, char **errp);
extern void
jsj_MakeJNIClassname(char *jClassName);
extern const char *
jsj_ClassNameOfJavaObject(JSContext *cx, JNIEnv *jEnv, jobject java_object);
extern jsize
jsj_GetJavaArrayLength(JSContext *cx, JNIEnv *jEnv, jarray java_array);
extern JSBool
JavaStringToId(JSContext *cx, JNIEnv *jEnv, jstring jstr, jsid *idp);
extern const char *
jsj_DupJavaStringUTF(JSContext *cx, JNIEnv *jEnv, jstring jstr);
JSJavaThreadState *
jsj_MapJSContextToJSJThread(JSContext *cx, JNIEnv **envp);
#ifdef DEBUG
#define DEBUG_LOG(args) printf args
#endif
#define JS_FREE_IF(cx, x) \
PR_BEGIN_MACRO \
if (x) \
JS_free(cx, x); \
PR_END_MACRO
#endif /* _JSJAVA_PVT_H */

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@@ -0,0 +1,339 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1998
* Netscape Communications Corporation. All Rights Reserved.
*/
/*
* This file is part of the Java-vendor-neutral implementation of LiveConnect
*
* It contains low-level utility code.
*
*/
#include <stdlib.h>
#include <string.h>
#include "prtypes.h"
#include "prprintf.h"
#include "prassert.h"
#include "jsj_private.h" /* LiveConnect internals */
#include "jsjava.h" /* External LiveConnect API */
/*
* This is a hash-table utility routine that computes the hash code of a Java
* object by calling java.lang.System.identityHashCode()
*/
PR_CALLBACK prhashcode
jsj_HashJavaObject(const void *key)
{
prhashcode hash_code;
jobject java_obj;
java_obj = (jobject)key;
hash_code = (*jENV)->CallStaticIntMethod(jENV, jlSystem,
jlSystem_identityHashCode, java_obj);
PR_ASSERT(!(*jENV)->ExceptionOccurred(jENV));
return hash_code;
}
/*
* This is a hash-table utility routine for comparing two Java objects.
* It's not possible to use the == operator to directly compare two jobject's,
* since they're opaque references and aren't guaranteed to be simple pointers
* or handles (though they may be in some JVM implementations). Instead,
* use the JNI routine for comparing the two objects.
*/
PR_CALLBACK intN
jsj_JavaObjectComparator(const void *v1, const void *v2)
{
jobject java_obj1, java_obj2;
java_obj1 = (jobject)v1;
java_obj2 = (jobject)v2;
if (java_obj1 == java_obj2)
return 1;
return (*jENV)->IsSameObject(jENV, java_obj1, java_obj2);
}
/*
* Return a UTF8, null-terminated encoding of a Java string. The string must
* be free'ed by the caller.
*
* If an error occurs, returns NULL and calls the JS error reporter.
*/
const char *
jsj_DupJavaStringUTF(JSContext *cx, JNIEnv *jEnv, jstring jstr)
{
const char *str, *retval;
str = (*jEnv)->GetStringUTFChars(jEnv, jstr, 0);
if (!str) {
jsj_UnexpectedJavaError(cx, jEnv, "Can't get UTF8 characters from "
"Java string");
return NULL;
}
retval = JS_strdup(cx, str);
(*jEnv)->ReleaseStringUTFChars(jEnv, jstr, str);
return retval;
}
JSBool
JavaStringToId(JSContext *cx, JNIEnv *jEnv, jstring jstr, jsid *idp)
{
const jschar *ucs2;
JSString *jsstr;
jsize ucs2_len;
jsval val;
ucs2 = (*jEnv)->GetStringChars(jEnv, jstr, 0);
if (!ucs2) {
jsj_UnexpectedJavaError(cx, jEnv, "Couldn't obtain Unicode characters"
"from Java string");
return JS_FALSE;
}
ucs2_len = (*jEnv)->GetStringLength(jEnv, jstr);
jsstr = JS_InternUCStringN(cx, ucs2, ucs2_len);
(*jEnv)->ReleaseStringChars(jEnv, jstr, ucs2);
if (!jsstr)
return JS_FALSE;
val = STRING_TO_JSVAL(jsstr);
JS_ValueToId(cx, STRING_TO_JSVAL(jsstr), idp);
return JS_TRUE;
}
/* Not used ?
const char *
jsj_ClassNameOfJavaObject(JSContext *cx, JNIEnv *jEnv, jobject java_object)
{
jobject java_class;
java_class = (*jEnv)->GetObjectClass(jEnv, java_object);
if (!java_class) {
PR_ASSERT(0);
return NULL;
}
return jsj_GetJavaClassName(cx, jEnv, java_class);
}
*/
/*
* Return, as a C string, the error message associated with a Java exception
* that occurred as a result of a JNI call, preceded by the class name of
* the exception. As a special case, if the class of the exception is
* netscape.javascript.JSException, the exception class name is omitted.
*
* NULL is returned if no Java exception is pending. The caller is
* responsible for free'ing the returned string. On exit, the Java exception
* is *not* cleared.
*/
const char *
jsj_GetJavaErrorMessage(JNIEnv *jEnv)
{
const char *java_error_msg;
char *error_msg = NULL;
jthrowable exception;
jstring java_exception_jstring;
exception = (*jEnv)->ExceptionOccurred(jEnv);
if (exception) {
java_exception_jstring =
(*jEnv)->CallObjectMethod(jEnv, exception, jlThrowable_toString);
java_error_msg = (*jEnv)->GetStringUTFChars(jEnv, java_exception_jstring, NULL);
error_msg = strdup((char*)java_error_msg);
(*jEnv)->ReleaseStringUTFChars(jEnv, java_exception_jstring, java_error_msg);
#ifdef DEBUG
/* (*jEnv)->ExceptionDescribe(jEnv); */
#endif
}
return error_msg;
}
/*
* Return, as a C string, the JVM stack trace associated with a Java
* exception, as would be printed by java.lang.Throwable.printStackTrace().
* The caller is responsible for free'ing the returned string.
*
* Returns NULL if an error occurs.
*/
static const char *
get_java_stack_trace(JSContext *cx, JNIEnv *jEnv, jthrowable java_exception)
{
const char *backtrace;
jstring backtrace_jstr;
backtrace = NULL;
if (java_exception && njJSUtil_getStackTrace) {
backtrace_jstr = (*jEnv)->CallStaticObjectMethod(jEnv, njJSUtil,
njJSUtil_getStackTrace,
java_exception);
if (!backtrace_jstr) {
jsj_UnexpectedJavaError(cx, jEnv, "Unable to get exception stack trace");
return NULL;
}
backtrace = jsj_DupJavaStringUTF(cx, jEnv, backtrace_jstr);
}
return backtrace;
}
/* Full Java backtrace when Java exceptions reported to JavaScript */
#define REPORT_JAVA_EXCEPTION_STACK_TRACE
/*
* This is a wrapper around JS_ReportError(), useful when an error condition
* is the result of a JVM failure or exception condition. It appends the
* message associated with the pending Java exception to the passed in
* printf-style format string and arguments.
*/
static void
vreport_java_error(JSContext *cx, JNIEnv *jEnv, const char *format, va_list ap)
{
char *error_msg, *js_error_msg;
const char *java_stack_trace;
const char *java_error_msg;
jthrowable java_exception;
java_error_msg = NULL;
java_exception = (*jEnv)->ExceptionOccurred(jEnv);
if (java_exception && njJSException &&
(*jEnv)->IsInstanceOf(jEnv, java_exception, njJSException)) {
(*jEnv)->ExceptionClear(jEnv);
jsj_ReportUncaughtJSException(cx, jEnv, java_exception);
return;
}
js_error_msg = PR_vsmprintf(format, ap);
if (!js_error_msg) {
PR_ASSERT(0); /* Out-of-memory */
return;
}
#ifdef REPORT_JAVA_EXCEPTION_STACK_TRACE
java_stack_trace = get_java_stack_trace(cx, jEnv, java_exception);
if (java_stack_trace) {
error_msg = PR_smprintf("%s\n%s", js_error_msg, java_stack_trace);
free((char*)java_stack_trace);
if (!error_msg) {
PR_ASSERT(0); /* Out-of-memory */
return;
}
}
#else
java_error_msg = jsj_GetJavaErrorMessage(jEnv);
if (java_error_msg) {
error_msg = PR_smprintf("%s (%s)\n", js_error_msg, java_error_msg);
free((char*)java_error_msg);
free(js_error_msg);
} else {
error_msg = js_error_msg;
}
#endif
JS_ReportError(cx, error_msg);
/* Important: the Java exception must not be cleared until the reporter
has been called, because the capture_js_error_reports_for_java(),
called from JS_ReportError(), needs to read the exception from the JVM */
(*jEnv)->ExceptionClear(jEnv);
free(error_msg);
}
void
jsj_ReportJavaError(JSContext *cx, JNIEnv *env, const char *format, ...)
{
va_list ap;
va_start(ap, format);
vreport_java_error(cx, env, format, ap);
va_end(ap);
}
/*
* Same as jsj_ReportJavaError, except "internal error: " is prepended
* to message.
*/
void
jsj_UnexpectedJavaError(JSContext *cx, JNIEnv *env, const char *format, ...)
{
va_list ap;
const char *format2;
va_start(ap, format);
format2 = PR_smprintf("internal error: %s", format);
if (format2)
vreport_java_error(cx, env, format2, ap);
free((void*)format2);
va_end(ap);
}
/*
* Most LiveConnect errors are signaled by calling JS_ReportError(),
* but in some circumstances, the target JSContext for such errors
* is not determinable, e.g. during initialization. In such cases
* any error messages are routed to this function.
*/
void
jsj_LogError(const char *error_msg)
{
if (JSJ_callbacks && JSJ_callbacks->error_print)
JSJ_callbacks->error_print(error_msg);
else
fputs(error_msg, stderr);
}
jsize
jsj_GetJavaArrayLength(JSContext *cx, JNIEnv *jEnv, jarray java_array)
{
jsize array_length = (*jEnv)->GetArrayLength(jEnv, java_array);
if ((*jEnv)->ExceptionOccurred(jEnv)) {
jsj_UnexpectedJavaError(cx, jEnv, "Couldn't obtain array length");
return -1;
}
return array_length;
}
JSJavaThreadState *
jsj_MapJSContextToJSJThread(JSContext *cx, JNIEnv **envp)
{
JSJavaThreadState *jsj_env;
char *err_msg;
*envp = NULL;
err_msg = NULL;
jsj_env = JSJ_callbacks->map_js_context_to_jsj_thread(cx, &err_msg);
if (!jsj_env) {
if (err_msg) {
JS_ReportError(cx, err_msg);
free(err_msg);
}
return NULL;
}
if (envp)
*envp = jsj_env->jEnv;
return jsj_env;
}

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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1998
* Netscape Communications Corporation. All Rights Reserved.
*/
/*
* This file is part of the Java-vendor-neutral implementation of LiveConnect
*
* Publicly exported functions for JavaScript <==> Java communication.
*
*/
#ifndef _JSJAVA_H
#define _JSJAVA_H
#include "jni.h" /* Java Native Interface */
#include "jsapi.h" /* JavaScript engine API */
/*
* A JSJavaVM structure is a wrapper around a JavaVM which incorporates
* additional LiveConnect state.
*/
typedef struct JSJavaVM JSJavaVM;
/* LiveConnect and Java state, one per thread */
typedef struct JSJavaThreadState JSJavaThreadState;
/*
* This callback table provides hooks to external functions that implement
* functionality specific to the embedding. For example, these callbacks are
* necessary in multi-threaded environments or to implement a security
* policy.
*/
typedef struct JSJCallbacks {
/* This callback is invoked when there is no JavaScript execution
environment (JSContext) associated with the current Java thread and
a call is made from Java into JavaScript. (A JSContext is associated
with a Java thread by calling the JSJ_SetJSContextForJavaThread()
function.) This callback is only invoked when Java spontaneously calls
into JavaScript, i.e. it is not called when JS calls into Java which
calls back into JS.
This callback can be used to create a JSContext lazily, or obtain
one from a pool of available JSContexts. The implementation of this
callback can call JSJ_SetJSContextForJavaThread() to avoid any further
callbacks of this type for this Java thread. */
JSContext * (*map_jsj_thread_to_js_context)(JSJavaThreadState *jsj_env,
char **errp);
/* This callback is invoked whenever a call is made into Java from
JavaScript. It's responsible for mapping from a JavaScript execution
environment (JSContext) to a Java thread. (A JavaContext can only
be associated with one Java thread at a time.) */
JSJavaThreadState * (*map_js_context_to_jsj_thread)(JSContext *cx,
char **errp);
/* This callback implements netscape.javascript.JSObject.getWindow(),
a method named for its behavior in the browser environment, where it
returns the JS "Window" object corresponding to the HTML window that an
applet is embedded within. More generally, it's a way for Java to get
hold of a JS object that has not been explicitly passed to it. */
JSObject * (*map_java_object_to_js_object)(JNIEnv *jEnv, jobject hint,
char **errp);
/* An interim callback function until the LiveConnect security story is
straightened out. This function pointer can be set to NULL. */
JSPrincipals * (*get_JSPrincipals_from_java_caller)(JNIEnv *jEnv);
/* The following two callbacks sandwich any JS evaluation performed
from Java. They may be used to implement concurrency constraints, e.g.
by suspending the current thread until some condition is met. In the
browser embedding, these are used to maintain the run-to-completion
semantics of JavaScript. It is acceptable for either function pointer
to be NULL. */
JSBool (*enter_js_from_java)(char **errp);
void (*exit_js)(void);
/* Most LiveConnect errors are signaled by calling JS_ReportError(), but in
some circumstances, the target JSContext for such errors is not
determinable, e.g. during initialization. In such cases any error
messages are routed to this function. If the function pointer is set to
NULL, error messages are sent to stderr. */
void (*error_print)(const char *error_msg);
/* Reserved for future use */
void * reserved[10];
} JSJCallbacks;
/*===========================================================================*/
/* A flag that denotes that a Java package has no sub-packages other than those
explicitly pre-defined at the time of JSContext initialization. An access
to a simple name within such a package, therefore, must either correspond to
one of these explicitly named sub-packages or to a class within this
package. It is reasonable for LiveConnect to signal an error if a simple
name does not comply with these criteria. */
#define PKG_SYSTEM 1
/* A flag that denotes that a Java package which might contain sub-packages
that are not pre-defined at initialization time, because the sub-packages
may not be the same in all installations. Therefore, an access to a simple
name within such a a package which does not correspond to either a
pre-defined sub-package or to a class, must be assummed to refer to an
unknown sub-package. This behavior may cause bogus JavaPackage objects to be
created if a package name is misspelled, e.g. sun.oi.net. */
#define PKG_USER 2
/* A Java package defined at initialization time. */
typedef struct JavaPackageDef {
const char * name; /* e.g. "java.lang" */
const char * path; /* e.g. "java/lang", or NULL for default */
int flags; /* PKG_USER, PKG_SYSTEM, etc. */
} JavaPackageDef;
/*===========================================================================*/
/* The following two convenience functions present a complete, but simplified
LiveConnect API which is designed to handle the special case of a single
Java-VM, with single-threaded operation, and the use of only one JSContext.
The full API is in the section below. */
/* Initialize the provided JSContext by setting up the JS classes necessary for
reflection and by defining JavaPackage objects for the default Java packages
as properties of global_obj. If java_vm is NULL, a new Java VM is
created, using the provided classpath in addition to any default classpath.
The classpath argument is ignored, however, if java_vm is non-NULL. */
PR_PUBLIC_API(JSBool)
JSJ_SimpleInit(JSContext *cx, JSObject *global_obj,
JavaVM *java_vm, const char *classpath);
/* Free up all resources. Destroy the Java VM if it was created by LiveConnect */
PR_PUBLIC_API(void)
JSJ_SimpleShutdown();
/*===========================================================================*/
/* The "full" LiveConnect API, required when more than one thread, Java VM, or
JSContext is involved. Initialization pseudocode might go roughly like
this:
JSJ_Init() // Setup callbacks
for each JavaVM {
JSJ_ConnectToJavaVM(...)
}
for each JSContext {
JSJ_InitJSContext(...)
}
for each JS evaluation {
run JavaScript code in the JSContext;
}
*/
/* Called once for all instances of LiveConnect to set up callbacks */
PR_PUBLIC_API(void)
JSJ_Init(JSJCallbacks *callbacks);
/* Called once per Java VM, this function initializes the classes, fields, and
methods required for Java reflection. If java_vm is NULL, a new Java VM is
created, using the provided classpath in addition to any default classpath.
The classpath argument is ignored, however, if java_vm is non-NULL. */
PR_PUBLIC_API(JSJavaVM *)
JSJ_ConnectToJavaVM(JavaVM *java_vm, const char *classpath);
/* Initialize the provided JSContext by setting up the JS classes necessary for
reflection and by defining JavaPackage objects for the default Java packages
as properties of global_obj. Additional packages may be pre-defined by
setting the predefined_packages argument. (Pre-defining a Java package at
initialization time is not necessary, but it will make package lookup faster
and, more importantly, will avoid unnecessary network accesses if classes
are being loaded over the network.) */
PR_PUBLIC_API(JSBool)
JSJ_InitJSContext(JSContext *cx, JSObject *global_obj,
JavaPackageDef *predefined_packages);
/* This function returns a structure that encapsulates the Java and JavaScript
execution environment for the current native thread. It is intended to
be called from the embedder's implementation of JSJCallback's
map_js_context_to_jsj_thread() function. The thread_name argument is only
used for debugging purposes and can be set to NULL. The Java JNI
environment associated with this thread is returned through the java_envp
argument if java_envp is non-NULL. */
PR_PUBLIC_API(JSJavaThreadState *)
JSJ_AttachCurrentThreadToJava(JSJavaVM *jsjava_vm, const char *thread_name,
JNIEnv **java_envp);
/* Destructor routine for per-thread JSJavaThreadState structure */
PR_PUBLIC_API(JSBool)
JSJ_DetachCurrentThreadFromJava(JSJavaThreadState *jsj_env);
/* This function is used to specify a particular JSContext as *the* JavaScript
execution environment to be used when LiveConnect is accessed from the given
Java thread, i.e. when one of the methods of netscape.javascript.JSObject
has been called. There can only be one such JS context for any given Java
thread at a time. To multiplex JSContexts among a single thread, this
function could be called before Java is invoked on that thread.) The return
value is the previous JSContext associated with the given Java thread.
If this function has not been called for a thread and a crossing is made
into JavaScript from Java, the map_jsj_thread_to_js_context() callback will
be invoked to determine the JSContext for the thread. The purpose of the
function is to improve performance by avoiding the expense of the callback.
*/
PR_PUBLIC_API(JSContext *)
JSJ_SetDefaultJSContextForJavaThread(JSContext *cx, JSJavaThreadState *jsj_env);
/* This routine severs the connection to a Java VM, freeing all related resources.
It shouldn't be called until the global scope has been cleared in all related
JSContexts (so that all LiveConnect objects are finalized) and a JavaScript
GC is performed. Otherwise, accessed to free'ed memory could result. */
PR_PUBLIC_API(void)
JSJ_DisconnectFromJavaVM(JSJavaVM *);
/*
* Reflect a Java object into a JS value. The source object, java_obj, must
* be of type java.lang.Object or a subclass and may, therefore, be an array.
*/
PR_PUBLIC_API(JSBool)
JSJ_ConvertJavaObjectToJSValue(JSContext *cx, jobject java_obj, jsval *vp);
#endif /* _JSJAVA_H */

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@@ -0,0 +1,101 @@
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class netscape_javascript_JSObject */
#ifndef _Included_netscape_javascript_JSObject
#define _Included_netscape_javascript_JSObject
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: netscape_javascript_JSObject
* Method: initClass
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_netscape_javascript_JSObject_initClass
(JNIEnv *, jclass);
/*
* Class: netscape_javascript_JSObject
* Method: getMember
* Signature: (Ljava/lang/String;)Ljava/lang/Object;
*/
JNIEXPORT jobject JNICALL Java_netscape_javascript_JSObject_getMember
(JNIEnv *, jobject, jstring);
/*
* Class: netscape_javascript_JSObject
* Method: getSlot
* Signature: (I)Ljava/lang/Object;
*/
JNIEXPORT jobject JNICALL Java_netscape_javascript_JSObject_getSlot
(JNIEnv *, jobject, jint);
/*
* Class: netscape_javascript_JSObject
* Method: setMember
* Signature: (Ljava/lang/String;Ljava/lang/Object;)V
*/
JNIEXPORT void JNICALL Java_netscape_javascript_JSObject_setMember
(JNIEnv *, jobject, jstring, jobject);
/*
* Class: netscape_javascript_JSObject
* Method: setSlot
* Signature: (ILjava/lang/Object;)V
*/
JNIEXPORT void JNICALL Java_netscape_javascript_JSObject_setSlot
(JNIEnv *, jobject, jint, jobject);
/*
* Class: netscape_javascript_JSObject
* Method: removeMember
* Signature: (Ljava/lang/String;)V
*/
JNIEXPORT void JNICALL Java_netscape_javascript_JSObject_removeMember
(JNIEnv *, jobject, jstring);
/*
* Class: netscape_javascript_JSObject
* Method: call
* Signature: (Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/Object;
*/
JNIEXPORT jobject JNICALL Java_netscape_javascript_JSObject_call
(JNIEnv *, jobject, jstring, jobjectArray);
/*
* Class: netscape_javascript_JSObject
* Method: eval
* Signature: (Ljava/lang/String;)Ljava/lang/Object;
*/
JNIEXPORT jobject JNICALL Java_netscape_javascript_JSObject_eval
(JNIEnv *, jobject, jstring);
/*
* Class: netscape_javascript_JSObject
* Method: toString
* Signature: ()Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_netscape_javascript_JSObject_toString
(JNIEnv *, jobject);
/*
* Class: netscape_javascript_JSObject
* Method: getWindow
* Signature: (Ljava/applet/Applet;)Lnetscape/javascript/JSObject;
*/
JNIEXPORT jobject JNICALL Java_netscape_javascript_JSObject_getWindow
(JNIEnv *, jclass, jobject);
/*
* Class: netscape_javascript_JSObject
* Method: finalize
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_netscape_javascript_JSObject_finalize
(JNIEnv *, jobject);
#ifdef __cplusplus
}
#endif
#endif

View File

@@ -1,617 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1999 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsAVLTree.h"
enum eLean {eLeft,eNeutral,eRight};
struct NS_COM nsAVLNode {
public:
nsAVLNode(void* aValue) {
mLeft=0;
mRight=0;
mSkew=eNeutral;
mValue=aValue;
}
nsAVLNode* mLeft;
nsAVLNode* mRight;
eLean mSkew;
void* mValue;
};
/************************************************************
Now begin the tree class. Don't forget that the comparison
between nodes must occur via the comparitor function,
otherwise all you're testing is pointer addresses.
************************************************************/
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
nsAVLTree::nsAVLTree(nsAVLNodeComparitor& aComparitor,
nsAVLNodeFunctor* aDeallocator) :
mComparitor(aComparitor), mDeallocator(aDeallocator) {
mRoot=0;
mCount=0;
}
static void
avlDeleteTree(nsAVLNode* aNode){
if (aNode) {
avlDeleteTree(aNode->mLeft);
avlDeleteTree(aNode->mRight);
delete aNode;
}
}
/**
*
* @update gess12/27/98
* @param
* @return
*/
nsAVLTree::~nsAVLTree(){
if (mDeallocator) {
ForEachDepthFirst(*mDeallocator);
}
avlDeleteTree(mRoot);
}
class CDoesntExist: public nsAVLNodeFunctor {
public:
CDoesntExist(const nsAVLTree& anotherTree) : mOtherTree(anotherTree) {
}
virtual void* operator()(void* anItem) {
void* result=mOtherTree.FindItem(anItem);
if(result)
return nsnull;
return anItem;
}
protected:
const nsAVLTree& mOtherTree;
};
/**
* This method compares two trees (members by identity).
* @update gess12/27/98
* @param tree to compare against
* @return true if they are identical (contain same stuff).
*/
PRBool nsAVLTree::operator==(const nsAVLTree& aCopy) const{
CDoesntExist functor(aCopy);
void* theItem=FirstThat(functor);
PRBool result=PRBool(!theItem);
return result;
}
/**
*
* @update gess12/27/98
* @param
* @return
*/
static void
avlRotateRight(nsAVLNode*& aRootNode){
nsAVLNode* ptr2;
nsAVLNode* ptr3;
ptr2=aRootNode->mRight;
if(ptr2->mSkew==eRight) {
aRootNode->mRight=ptr2->mLeft;
ptr2->mLeft=aRootNode;
aRootNode->mSkew=eNeutral;
aRootNode=ptr2;
}
else {
ptr3=ptr2->mLeft;
ptr2->mLeft=ptr3->mRight;
ptr3->mRight=ptr2;
aRootNode->mRight=ptr3->mLeft;
ptr3->mLeft=aRootNode;
if(ptr3->mSkew==eLeft)
ptr2->mSkew=eRight;
else ptr2->mSkew=eNeutral;
if(ptr3->mSkew==eRight)
aRootNode->mSkew=eLeft;
else aRootNode->mSkew=eNeutral;
aRootNode=ptr3;
}
aRootNode->mSkew=eNeutral;
return;
}
/**
*
* @update gess12/27/98
* @param
* @return
*/
static void
avlRotateLeft(nsAVLNode*& aRootNode){
nsAVLNode* ptr2;
nsAVLNode* ptr3;
ptr2=aRootNode->mLeft;
if(ptr2->mSkew==eLeft) {
aRootNode->mLeft=ptr2->mRight;
ptr2->mRight=aRootNode;
aRootNode->mSkew=eNeutral;
aRootNode=ptr2;
}
else {
ptr3=ptr2->mRight;
ptr2->mRight=ptr3->mLeft;
ptr3->mLeft=ptr2;
aRootNode->mLeft=ptr3->mRight;
ptr3->mRight=aRootNode;
if(ptr3->mSkew==eRight)
ptr2->mSkew=eLeft;
else ptr2->mSkew=eNeutral;
if(ptr3->mSkew==eLeft)
aRootNode->mSkew=eRight;
else aRootNode->mSkew=eNeutral;
aRootNode=ptr3;
}
aRootNode->mSkew=eNeutral;
return;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static eAVLStatus
avlInsert(nsAVLNode*& aRootNode, nsAVLNode* aNewNode,
nsAVLNodeComparitor& aComparitor) {
eAVLStatus result=eAVL_unknown;
if(!aRootNode) {
aRootNode = aNewNode;
return eAVL_ok;
}
if(aNewNode==aRootNode->mValue) {
return eAVL_duplicate;
}
PRInt32 theCompareResult=aComparitor(aRootNode->mValue,aNewNode->mValue);
if(0 < theCompareResult) { //if(anItem<aRootNode->mValue)
result=avlInsert(aRootNode->mLeft,aNewNode,aComparitor);
if(eAVL_ok==result) {
switch(aRootNode->mSkew){
case eLeft:
avlRotateLeft(aRootNode);
result=eAVL_fail;
break;
case eRight:
aRootNode->mSkew=eNeutral;
result=eAVL_fail;
break;
case eNeutral:
aRootNode->mSkew=eLeft;
break;
} //switch
}//if
} //if
else {
result=avlInsert(aRootNode->mRight,aNewNode,aComparitor);
if(eAVL_ok==result) {
switch(aRootNode->mSkew){
case eLeft:
aRootNode->mSkew=eNeutral;
result=eAVL_fail;
break;
case eRight:
avlRotateRight(aRootNode);
result=eAVL_fail;
break;
case eNeutral:
aRootNode->mSkew=eRight;
break;
} //switch
}
} //if
return result;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static void
avlBalanceLeft(nsAVLNode*& aRootNode, PRBool& delOk){
nsAVLNode* ptr2;
nsAVLNode* ptr3;
eLean balnc2;
eLean balnc3;
switch(aRootNode->mSkew){
case eLeft:
ptr2=aRootNode->mLeft;
balnc2=ptr2->mSkew;
if(balnc2!=eRight) {
aRootNode->mLeft=ptr2->mRight;
ptr2->mRight=aRootNode;
if(balnc2==eNeutral){
aRootNode->mSkew=eLeft;
ptr2->mSkew=eRight;
delOk=PR_FALSE;
}
else{
aRootNode->mSkew=eNeutral;
ptr2->mSkew=eNeutral;
}
aRootNode=ptr2;
}
else{
ptr3=ptr2->mRight;
balnc3=ptr3->mSkew;
ptr2->mRight=ptr3->mLeft;
ptr3->mLeft=ptr2;
aRootNode->mLeft=ptr3->mRight;
ptr3->mRight=aRootNode;
if(balnc3==eRight) {
ptr2->mSkew=eLeft;
}
else {
ptr2->mSkew=eNeutral;
}
if(balnc3==eLeft) {
aRootNode->mSkew=eRight;
}
else {
aRootNode->mSkew=eNeutral;
}
aRootNode=ptr3;
ptr3->mSkew=eNeutral;
}
break;
case eRight:
aRootNode->mSkew=eNeutral;
break;
case eNeutral:
aRootNode->mSkew=eLeft;
delOk=PR_FALSE;
break;
}//switch
return;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static void
avlBalanceRight(nsAVLNode*& aRootNode, PRBool& delOk){
nsAVLNode* ptr2;
nsAVLNode* ptr3;
eLean balnc2;
eLean balnc3;
switch(aRootNode->mSkew){
case eLeft:
aRootNode->mSkew=eNeutral;
break;
case eRight:
ptr2=aRootNode->mRight;
balnc2=ptr2->mSkew;
if(balnc2!=eLeft) {
aRootNode->mRight=ptr2->mLeft;
ptr2->mLeft=aRootNode;
if(balnc2==eNeutral){
aRootNode->mSkew=eRight;
ptr2->mSkew=eLeft;
delOk=PR_FALSE;
}
else{
aRootNode->mSkew=eNeutral;
ptr2->mSkew=eNeutral;
}
aRootNode=ptr2;
}
else{
ptr3=ptr2->mLeft;
balnc3=ptr3->mSkew;
ptr2->mLeft=ptr3->mRight;
ptr3->mRight=ptr2;
aRootNode->mRight=ptr3->mLeft;
ptr3->mLeft=aRootNode;
if(balnc3==eLeft) {
ptr2->mSkew=eRight;
}
else {
ptr2->mSkew=eNeutral;
}
if(balnc3==eRight) {
aRootNode->mSkew=eLeft;
}
else {
aRootNode->mSkew=eNeutral;
}
aRootNode=ptr3;
ptr3->mSkew=eNeutral;
}
break;
case eNeutral:
aRootNode->mSkew=eRight;
delOk=PR_FALSE;
break;
}//switch
return;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static eAVLStatus
avlRemoveChildren(nsAVLNode*& aRootNode,nsAVLNode*& anotherNode, PRBool& delOk){
eAVLStatus result=eAVL_ok;
if(!anotherNode->mRight){
aRootNode->mValue=anotherNode->mValue; //swap
anotherNode=anotherNode->mLeft;
delOk=PR_TRUE;
}
else{
avlRemoveChildren(aRootNode,anotherNode->mRight,delOk);
if(delOk)
avlBalanceLeft(anotherNode,delOk);
}
return result;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static eAVLStatus
avlRemove(nsAVLNode*& aRootNode, void* anItem, PRBool& delOk,
nsAVLNodeComparitor& aComparitor){
eAVLStatus result=eAVL_ok;
if(!aRootNode)
delOk=PR_FALSE;
else {
PRInt32 cmp=aComparitor(anItem,aRootNode->mValue);
if(cmp<0){
avlRemove(aRootNode->mLeft,anItem,delOk,aComparitor);
if(delOk)
avlBalanceRight(aRootNode,delOk);
}
else if(cmp>0){
avlRemove(aRootNode->mRight,anItem,delOk,aComparitor);
if(delOk)
avlBalanceLeft(aRootNode,delOk);
}
else{ //they match...
nsAVLNode* temp=aRootNode;
if(!aRootNode->mRight) {
aRootNode=aRootNode->mLeft;
delOk=PR_TRUE;
delete temp;
}
else if(!aRootNode->mLeft) {
aRootNode=aRootNode->mRight;
delOk=PR_TRUE;
delete temp;
}
else {
avlRemoveChildren(aRootNode,aRootNode->mLeft,delOk);
if(delOk)
avlBalanceRight(aRootNode,delOk);
}
}
}
return result;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
eAVLStatus
nsAVLTree::AddItem(void* anItem){
eAVLStatus result=eAVL_ok;
nsAVLNode* theNewNode=new nsAVLNode(anItem);
result=avlInsert(mRoot,theNewNode,mComparitor);
if(eAVL_duplicate!=result)
mCount++;
else {
delete theNewNode;
}
return result;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
void* nsAVLTree::FindItem(void* aValue) const{
nsAVLNode* result=mRoot;
PRInt32 count=0;
while(result) {
count++;
PRInt32 cmp=mComparitor(aValue,result->mValue);
if(0==cmp) {
//we matched...
break;
}
else if(0>cmp){
//theNode was greater...
result=result->mLeft;
}
else {
//aValue is greater...
result=result->mRight;
}
}
if(result) {
return result->mValue;
}
return nsnull;
}
/**
*
* @update gess12/30/98
* @param
* @return
*/
eAVLStatus
nsAVLTree::RemoveItem(void* aValue){
PRBool delOk=PR_TRUE;
eAVLStatus result=avlRemove(mRoot,aValue,delOk,mComparitor);
if(eAVL_ok==result)
mCount--;
return result;
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
static void
avlForEachDepthFirst(nsAVLNode* aNode, nsAVLNodeFunctor& aFunctor){
if(aNode) {
avlForEachDepthFirst(aNode->mLeft,aFunctor);
avlForEachDepthFirst(aNode->mRight,aFunctor);
aFunctor(aNode->mValue);
}
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
void
nsAVLTree::ForEachDepthFirst(nsAVLNodeFunctor& aFunctor) const{
::avlForEachDepthFirst(mRoot,aFunctor);
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
static void
avlForEach(nsAVLNode* aNode, nsAVLNodeFunctor& aFunctor) {
if(aNode) {
avlForEach(aNode->mLeft,aFunctor);
aFunctor(aNode->mValue);
avlForEach(aNode->mRight,aFunctor);
}
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
void
nsAVLTree::ForEach(nsAVLNodeFunctor& aFunctor) const{
::avlForEach(mRoot,aFunctor);
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
static void*
avlFirstThat(nsAVLNode* aNode, nsAVLNodeFunctor& aFunctor) {
void* result=nsnull;
if(aNode) {
result = avlFirstThat(aNode->mLeft,aFunctor);
if (result) {
return result;
}
result = aFunctor(aNode->mValue);
if (result) {
return result;
}
result = avlFirstThat(aNode->mRight,aFunctor);
}
return result;
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
void*
nsAVLTree::FirstThat(nsAVLNodeFunctor& aFunctor) const{
return ::avlFirstThat(mRoot,aFunctor);
}

View File

@@ -1,74 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1999 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsAVLTree_h___
#define nsAVLTree_h___
#include "nscore.h"
enum eAVLStatus {eAVL_unknown,eAVL_ok,eAVL_fail,eAVL_duplicate};
struct nsAVLNode;
/**
*
* @update gess12/26/98
* @param anObject1 is the first object to be compared
* @param anObject2 is the second object to be compared
* @return -1,0,1 if object1 is less, equal, greater than object2
*/
class NS_COM nsAVLNodeComparitor {
public:
virtual PRInt32 operator()(void* anItem1,void* anItem2)=0;
};
class NS_COM nsAVLNodeFunctor {
public:
virtual void* operator()(void* anItem)=0;
};
class NS_COM nsAVLTree {
public:
nsAVLTree(nsAVLNodeComparitor& aComparitor, nsAVLNodeFunctor* aDeallocator);
~nsAVLTree(void);
PRBool operator==(const nsAVLTree& aOther) const;
PRInt32 GetCount(void) const {return mCount;}
//main functions...
eAVLStatus AddItem(void* anItem);
eAVLStatus RemoveItem(void* anItem);
void* FindItem(void* anItem) const;
void ForEach(nsAVLNodeFunctor& aFunctor) const;
void ForEachDepthFirst(nsAVLNodeFunctor& aFunctor) const;
void* FirstThat(nsAVLNodeFunctor& aFunctor) const;
protected:
nsAVLNode* mRoot;
PRInt32 mCount;
nsAVLNodeComparitor& mComparitor;
nsAVLNodeFunctor* mDeallocator;
};
#endif /* nsAVLTree_h___ */

View File

@@ -1,717 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/******************************************************************************************
MODULE NOTES:
This file contains the nsStr data structure.
This general purpose buffer management class is used as the basis for our strings.
It's benefits include:
1. An efficient set of library style functions for manipulating nsStrs
2. Support for 1 and 2 byte character strings (which can easily be increased to n)
3. Unicode awareness and interoperability.
*******************************************************************************************/
#include "nsStr.h"
#include "bufferRoutines.h"
#include "stdio.h" //only used for printf
#include "nsCRT.h"
#include "nsDeque.h"
//static const char* kCallFindChar = "For better performance, call FindChar() for targets whose length==1.";
//static const char* kCallRFindChar = "For better performance, call RFindChar() for targets whose length==1.";
static const PRUnichar gCommonEmptyBuffer[1] = {0};
/**
* This method initializes all the members of the nsStr structure
*
* @update gess10/30/98
* @param
* @return
*/
void nsStr::Initialize(nsStr& aDest,eCharSize aCharSize) {
aDest.mStr=(char*)gCommonEmptyBuffer;
aDest.mLength=0;
aDest.mCapacity=0;
aDest.mCharSize=aCharSize;
aDest.mOwnsBuffer=0;
}
/**
* This method initializes all the members of the nsStr structure
* @update gess10/30/98
* @param
* @return
*/
void nsStr::Initialize(nsStr& aDest,char* aCString,PRUint32 aCapacity,PRUint32 aLength,eCharSize aCharSize,PRBool aOwnsBuffer){
aDest.mStr=(aCString) ? aCString : (char*)gCommonEmptyBuffer;
aDest.mLength=aLength;
aDest.mCapacity=aCapacity;
aDest.mCharSize=aCharSize;
aDest.mOwnsBuffer=aOwnsBuffer;
}
/**
* This member destroys the memory buffer owned by an nsStr object (if it actually owns it)
* @update gess10/30/98
* @param
* @return
*/
void nsStr::Destroy(nsStr& aDest) {
if((aDest.mStr) && (aDest.mStr!=(char*)gCommonEmptyBuffer)) {
Free(aDest);
}
}
/**
* This method gets called when the internal buffer needs
* to grow to a given size. The original contents are not preserved.
* @update gess 3/30/98
* @param aNewLength -- new capacity of string in charSize units
* @return void
*/
PRBool nsStr::EnsureCapacity(nsStr& aString,PRUint32 aNewLength) {
PRBool result=PR_TRUE;
if(aNewLength>aString.mCapacity) {
result=Realloc(aString,aNewLength);
if(aString.mStr)
AddNullTerminator(aString);
}
return result;
}
/**
* This method gets called when the internal buffer needs
* to grow to a given size. The original contents ARE preserved.
* @update gess 3/30/98
* @param aNewLength -- new capacity of string in charSize units
* @return void
*/
PRBool nsStr::GrowCapacity(nsStr& aDest,PRUint32 aNewLength) {
PRBool result=PR_TRUE;
if(aNewLength>aDest.mCapacity) {
nsStr theTempStr;
nsStr::Initialize(theTempStr,aDest.mCharSize);
result=EnsureCapacity(theTempStr,aNewLength);
if(result) {
if(aDest.mLength) {
Append(theTempStr,aDest,0,aDest.mLength);
}
Free(aDest);
aDest.mStr = theTempStr.mStr;
theTempStr.mStr=0; //make sure to null this out so that you don't lose the buffer you just stole...
aDest.mLength=theTempStr.mLength;
aDest.mCapacity=theTempStr.mCapacity;
aDest.mOwnsBuffer=theTempStr.mOwnsBuffer;
}
}
return result;
}
/**
* Replaces the contents of aDest with aSource, up to aCount of chars.
* @update gess10/30/98
* @param aDest is the nsStr that gets changed.
* @param aSource is where chars are copied from
* @param aCount is the number of chars copied from aSource
*/
void nsStr::Assign(nsStr& aDest,const nsStr& aSource,PRUint32 anOffset,PRInt32 aCount){
if(&aDest!=&aSource){
Truncate(aDest,0);
Append(aDest,aSource,anOffset,aCount);
}
}
/**
* This method appends the given nsStr to this one. Note that we have to
* pay attention to the underlying char-size of both structs.
* @update gess10/30/98
* @param aDest is the nsStr to be manipulated
* @param aSource is where char are copied from
* @aCount is the number of bytes to be copied
*/
void nsStr::Append(nsStr& aDest,const nsStr& aSource,PRUint32 anOffset,PRInt32 aCount){
if(anOffset<aSource.mLength){
PRUint32 theRealLen=(aCount<0) ? aSource.mLength : MinInt(aCount,aSource.mLength);
PRUint32 theLength=(anOffset+theRealLen<aSource.mLength) ? theRealLen : (aSource.mLength-anOffset);
if(0<theLength){
PRBool isBigEnough=PR_TRUE;
if(aDest.mLength+theLength > aDest.mCapacity) {
isBigEnough=GrowCapacity(aDest,aDest.mLength+theLength);
}
if(isBigEnough) {
//now append new chars, starting at offset
(*gCopyChars[aSource.mCharSize][aDest.mCharSize])(aDest.mStr,aDest.mLength,aSource.mStr,anOffset,theLength);
aDest.mLength+=theLength;
AddNullTerminator(aDest);
}
}
}
}
/**
* This method inserts up to "aCount" chars from a source nsStr into a dest nsStr.
* @update gess10/30/98
* @param aDest is the nsStr that gets changed
* @param aDestOffset is where in aDest the insertion is to occur
* @param aSource is where chars are copied from
* @param aSrcOffset is where in aSource chars are copied from
* @param aCount is the number of chars from aSource to be inserted into aDest
*/
void nsStr::Insert( nsStr& aDest,PRUint32 aDestOffset,const nsStr& aSource,PRUint32 aSrcOffset,PRInt32 aCount){
//there are a few cases for insert:
// 1. You're inserting chars into an empty string (assign)
// 2. You're inserting onto the end of a string (append)
// 3. You're inserting onto the 1..n-1 pos of a string (the hard case).
if(0<aSource.mLength){
if(aDest.mLength){
if(aDestOffset<aDest.mLength){
PRInt32 theRealLen=(aCount<0) ? aSource.mLength : MinInt(aCount,aSource.mLength);
PRInt32 theLength=(aSrcOffset+theRealLen<aSource.mLength) ? theRealLen : (aSource.mLength-aSrcOffset);
if(aSrcOffset<aSource.mLength) {
//here's the only new case we have to handle.
//chars are really being inserted into our buffer...
if(aDest.mLength+theLength > aDest.mCapacity) {
nsStr theTempStr;
nsStr::Initialize(theTempStr,aDest.mCharSize);
PRBool isBigEnough=EnsureCapacity(theTempStr,aDest.mLength+theLength); //grow the temp buffer to the right size
if(isBigEnough) {
if(aDestOffset) {
Append(theTempStr,aDest,0,aDestOffset); //first copy leftmost data...
}
Append(theTempStr,aSource,0,aSource.mLength); //next copy inserted (new) data
PRUint32 theRemains=aDest.mLength-aDestOffset;
if(theRemains) {
Append(theTempStr,aDest,aDestOffset,theRemains); //next copy rightmost data
}
Free(aDest);
aDest.mStr = theTempStr.mStr;
theTempStr.mStr=0; //make sure to null this out so that you don't lose the buffer you just stole...
aDest.mCapacity=theTempStr.mCapacity;
aDest.mOwnsBuffer=theTempStr.mOwnsBuffer;
}
}
else {
//shift the chars right by theDelta...
(*gShiftChars[aDest.mCharSize][KSHIFTRIGHT])(aDest.mStr,aDest.mLength,aDestOffset,theLength);
//now insert new chars, starting at offset
(*gCopyChars[aSource.mCharSize][aDest.mCharSize])(aDest.mStr,aDestOffset,aSource.mStr,aSrcOffset,theLength);
}
//finally, make sure to update the string length...
aDest.mLength+=theLength;
AddNullTerminator(aDest);
}//if
//else nothing to do!
}
else Append(aDest,aSource,0,aCount);
}
else Append(aDest,aSource,0,aCount);
}
}
/**
* This method deletes up to aCount chars from aDest
* @update gess10/30/98
* @param aDest is the nsStr to be manipulated
* @param aDestOffset is where in aDest deletion is to occur
* @param aCount is the number of chars to be deleted in aDest
*/
void nsStr::Delete(nsStr& aDest,PRUint32 aDestOffset,PRUint32 aCount){
if(aDestOffset<aDest.mLength){
PRUint32 theDelta=aDest.mLength-aDestOffset;
PRUint32 theLength=(theDelta<aCount) ? theDelta : aCount;
if(aDestOffset+theLength<aDest.mLength) {
//if you're here, it means we're cutting chars out of the middle of the string...
//so shift the chars left by theLength...
(*gShiftChars[aDest.mCharSize][KSHIFTLEFT])(aDest.mStr,aDest.mLength,aDestOffset,theLength);
aDest.mLength-=theLength;
AddNullTerminator(aDest);
}
else Truncate(aDest,aDestOffset);
}//if
}
/**
* This method truncates the given nsStr at given offset
* @update gess10/30/98
* @param aDest is the nsStr to be truncated
* @param aDestOffset is where in aDest truncation is to occur
*/
void nsStr::Truncate(nsStr& aDest,PRUint32 aDestOffset){
if(aDestOffset<aDest.mLength){
aDest.mLength=aDestOffset;
AddNullTerminator(aDest);
}
}
/**
* This method forces the given string to upper or lowercase
* @update gess1/7/99
* @param aDest is the string you're going to change
* @param aToUpper: if TRUE, then we go uppercase, otherwise we go lowercase
* @return
*/
void nsStr::ChangeCase(nsStr& aDest,PRBool aToUpper) {
// somehow UnicharUtil return failed, fallback to the old ascii only code
gCaseConverters[aDest.mCharSize](aDest.mStr,aDest.mLength,aToUpper);
}
/**
*
* @update gess1/7/99
* @param
* @return
*/
void nsStr::Trim(nsStr& aDest,const char* aSet,PRBool aEliminateLeading,PRBool aEliminateTrailing){
if((aDest.mLength>0) && aSet){
PRInt32 theIndex=-1;
PRInt32 theMax=aDest.mLength;
PRInt32 theSetLen=nsCRT::strlen(aSet);
if(aEliminateLeading) {
while(++theIndex<=theMax) {
PRUnichar theChar=GetCharAt(aDest,theIndex);
PRInt32 thePos=gFindChars[eOneByte](aSet,theSetLen,0,theChar,PR_FALSE);
if(kNotFound==thePos)
break;
}
if(0<theIndex) {
if(theIndex<theMax) {
Delete(aDest,0,theIndex);
}
else Truncate(aDest,0);
}
}
if(aEliminateTrailing) {
theIndex=aDest.mLength;
PRInt32 theNewLen=theIndex;
while(--theIndex>0) {
PRUnichar theChar=GetCharAt(aDest,theIndex); //read at end now...
PRInt32 thePos=gFindChars[eOneByte](aSet,theSetLen,0,theChar,PR_FALSE);
if(kNotFound<thePos)
theNewLen=theIndex;
else break;
}
if(theNewLen<theMax) {
Truncate(aDest,theNewLen);
}
}
}
}
/**
*
* @update gess1/7/99
* @param
* @return
*/
void nsStr::CompressSet(nsStr& aDest,const char* aSet,PRBool aEliminateLeading,PRBool aEliminateTrailing){
Trim(aDest,aSet,aEliminateLeading,aEliminateTrailing);
PRUint32 aNewLen=gCompressChars[aDest.mCharSize](aDest.mStr,aDest.mLength,aSet);
aDest.mLength=aNewLen;
}
/**
*
* @update gess1/7/99
* @param
* @return
*/
void nsStr::StripChars(nsStr& aDest,const char* aSet){
if((0<aDest.mLength) && (aSet)) {
PRUint32 aNewLen=gStripChars[aDest.mCharSize](aDest.mStr,aDest.mLength,aSet);
aDest.mLength=aNewLen;
}
}
/**************************************************************
Searching methods...
**************************************************************/
/**
* This searches aDest for a given substring
*
* @update gess 3/25/98
* @param aDest string to search
* @param aTarget is the substring you're trying to find.
* @param aIgnorecase indicates case sensitivity of search
* @param anOffset tells us where to start the search
* @return index in aDest where member of aSet occurs, or -1 if not found
*/
PRInt32 nsStr::FindSubstr(const nsStr& aDest,const nsStr& aTarget, PRBool aIgnoreCase,PRInt32 anOffset) {
// NS_PRECONDITION(aTarget.mLength!=1,kCallFindChar);
PRInt32 result=kNotFound;
if((0<aDest.mLength) && (anOffset<(PRInt32)aDest.mLength)) {
PRInt32 theMax=aDest.mLength-aTarget.mLength;
PRInt32 index=(0<=anOffset) ? anOffset : 0;
if((aDest.mLength>=aTarget.mLength) && (aTarget.mLength>0) && (index>=0)){
PRInt32 theTargetMax=aTarget.mLength;
while(index<=theMax) {
PRInt32 theSubIndex=-1;
PRBool matches=PR_TRUE;
while((++theSubIndex<theTargetMax) && (matches)){
PRUnichar theChar=(aIgnoreCase) ? nsCRT::ToLower(GetCharAt(aDest,index+theSubIndex)) : GetCharAt(aDest,index+theSubIndex);
PRUnichar theTargetChar=(aIgnoreCase) ? nsCRT::ToLower(GetCharAt(aTarget,theSubIndex)) : GetCharAt(aTarget,theSubIndex);
matches=PRBool(theChar==theTargetChar);
}
if(matches) {
result=index;
break;
}
index++;
} //while
}//if
}//if
return result;
}
/**
* This searches aDest for a given character
*
* @update gess 3/25/98
* @param aDest string to search
* @param char is the character you're trying to find.
* @param aIgnorecase indicates case sensitivity of search
* @param anOffset tells us where to start the search
* @return index in aDest where member of aSet occurs, or -1 if not found
*/
PRInt32 nsStr::FindChar(const nsStr& aDest,PRUnichar aChar, PRBool aIgnoreCase,PRInt32 anOffset) {
PRInt32 result=kNotFound;
if((0<aDest.mLength) && (anOffset<(PRInt32)aDest.mLength)) {
PRUint32 index=(0<=anOffset) ? (PRUint32)anOffset : 0;
result=gFindChars[aDest.mCharSize](aDest.mStr,aDest.mLength,index,aChar,aIgnoreCase);
}
return result;
}
/**
* This searches aDest for a character found in aSet.
*
* @update gess 3/25/98
* @param aDest string to search
* @param aSet contains a list of chars to be searched for
* @param aIgnorecase indicates case sensitivity of search
* @param anOffset tells us where to start the search
* @return index in aDest where member of aSet occurs, or -1 if not found
*/
PRInt32 nsStr::FindCharInSet(const nsStr& aDest,const nsStr& aSet,PRBool aIgnoreCase,PRInt32 anOffset) {
//NS_PRECONDITION(aSet.mLength!=1,kCallFindChar);
PRInt32 index=(0<=anOffset) ? anOffset-1 : -1;
PRInt32 thePos;
//Note that the search is inverted here. We're scanning aDest, one char at a time
//but doing the search against the given set. That's why we use 0 as the offset below.
if((0<aDest.mLength) && (0<aSet.mLength)){
while(++index<(PRInt32)aDest.mLength) {
PRUnichar theChar=GetCharAt(aDest,index);
thePos=gFindChars[aSet.mCharSize](aSet.mStr,aSet.mLength,0,theChar,aIgnoreCase);
if(kNotFound!=thePos)
return index;
} //while
}
return kNotFound;
}
/**************************************************************
Reverse Searching methods...
**************************************************************/
/**
* This searches aDest (in reverse) for a given substring
*
* @update gess 3/25/98
* @param aDest string to search
* @param aTarget is the substring you're trying to find.
* @param aIgnorecase indicates case sensitivity of search
* @param anOffset tells us where to start the search (counting from left)
* @return index in aDest where member of aSet occurs, or -1 if not found
*/
PRInt32 nsStr::RFindSubstr(const nsStr& aDest,const nsStr& aTarget, PRBool aIgnoreCase,PRInt32 anOffset) {
//NS_PRECONDITION(aTarget.mLength!=1,kCallRFindChar);
PRInt32 result=kNotFound;
if((0<aDest.mLength) && (anOffset<(PRInt32)aDest.mLength)) {
PRInt32 index=(0<=anOffset) ? anOffset : aDest.mLength-1;
if((aDest.mLength>=aTarget.mLength) && (aTarget.mLength>0) && (index>=0)){
nsStr theCopy;
nsStr::Initialize(theCopy,eOneByte);
nsStr::Assign(theCopy,aTarget,0,aTarget.mLength);
if(aIgnoreCase){
nsStr::ChangeCase(theCopy,PR_FALSE); //force to lowercase
}
PRInt32 theTargetMax=theCopy.mLength;
while(index>=0) {
PRInt32 theSubIndex=-1;
PRBool matches=PR_FALSE;
if(index+theCopy.mLength<=aDest.mLength) {
matches=PR_TRUE;
while((++theSubIndex<theTargetMax) && (matches)){
PRUnichar theDestChar=(aIgnoreCase) ? nsCRT::ToLower(GetCharAt(aDest,index+theSubIndex)) : GetCharAt(aDest,index+theSubIndex);
PRUnichar theTargetChar=GetCharAt(theCopy,theSubIndex);
matches=PRBool(theDestChar==theTargetChar);
} //while
} //if
if(matches) {
result=index;
break;
}
index--;
} //while
nsStr::Destroy(theCopy);
}//if
}//if
return result;
}
/**
* This searches aDest (in reverse) for a given character
*
* @update gess 3/25/98
* @param aDest string to search
* @param char is the character you're trying to find.
* @param aIgnorecase indicates case sensitivity of search
* @param anOffset tells us where to start the search
* @return index in aDest where member of aSet occurs, or -1 if not found
*/
PRInt32 nsStr::RFindChar(const nsStr& aDest,PRUnichar aChar, PRBool aIgnoreCase,PRInt32 anOffset) {
PRInt32 result=kNotFound;
if((0<aDest.mLength) && (anOffset<(PRInt32)aDest.mLength)) {
PRUint32 index=(0<=anOffset) ? anOffset : aDest.mLength-1;
result=gRFindChars[aDest.mCharSize](aDest.mStr,aDest.mLength,index,aChar,aIgnoreCase);
}
return result;
}
/**
* This searches aDest (in reverese) for a character found in aSet.
*
* @update gess 3/25/98
* @param aDest string to search
* @param aSet contains a list of chars to be searched for
* @param aIgnorecase indicates case sensitivity of search
* @param anOffset tells us where to start the search
* @return index in aDest where member of aSet occurs, or -1 if not found
*/
PRInt32 nsStr::RFindCharInSet(const nsStr& aDest,const nsStr& aSet,PRBool aIgnoreCase,PRInt32 anOffset) {
//NS_PRECONDITION(aSet.mLength!=1,kCallRFindChar);
PRInt32 index=(0<=anOffset) ? anOffset : aDest.mLength;
PRInt32 thePos;
//note that the search is inverted here. We're scanning aDest, one char at a time
//but doing the search against the given set. That's why we use 0 as the offset below.
if(0<aDest.mLength) {
while(--index>=0) {
PRUnichar theChar=GetCharAt(aDest,index);
thePos=gFindChars[aSet.mCharSize](aSet.mStr,aSet.mLength,0,theChar,aIgnoreCase);
if(kNotFound!=thePos)
return index;
} //while
}
return kNotFound;
}
/**
* Compare source and dest strings, up to an (optional max) number of chars
* @param aDest is the first str to compare
* @param aSource is the second str to compare
* @param aCount -- if (-1), then we use length of longer string; if (0<aCount) then it gives the max # of chars to compare
* @param aIgnorecase tells us whether to search with case sensitivity
* @return aDest<aSource=-1;aDest==aSource==0;aDest>aSource=1
*/
PRInt32 nsStr::Compare(const nsStr& aDest,const nsStr& aSource,PRInt32 aCount,PRBool aIgnoreCase) {
PRInt32 result=0;
if(aCount) {
PRInt32 minlen=(aSource.mLength<aDest.mLength) ? aSource.mLength : aDest.mLength;
if(0==minlen) {
if ((aDest.mLength == 0) && (aSource.mLength == 0))
return 0;
if (aDest.mLength == 0)
return -1;
return 1;
}
PRInt32 maxlen=(aSource.mLength<aDest.mLength) ? aDest.mLength : aSource.mLength;
aCount = (aCount<0) ? maxlen : MinInt(aCount,maxlen);
result=(*gCompare[aDest.mCharSize][aSource.mCharSize])(aDest.mStr,aSource.mStr,aCount,aIgnoreCase);
}
return result;
}
//----------------------------------------------------------------------------------------
PRBool nsStr::Alloc(nsStr& aDest,PRUint32 aCount) {
static int mAllocCount=0;
mAllocCount++;
//we're given the acount value in charunits; now scale up to next multiple.
PRUint32 theNewCapacity=kDefaultStringSize;
while(theNewCapacity<aCount){
theNewCapacity<<=1;
}
aDest.mCapacity=theNewCapacity++;
PRUint32 theSize=(theNewCapacity<<aDest.mCharSize);
aDest.mStr = (char*)nsAllocator::Alloc(theSize);
PRBool result=PR_FALSE;
if(aDest.mStr) {
aDest.mOwnsBuffer=1;
result=PR_TRUE;
}
return result;
}
PRBool nsStr::Free(nsStr& aDest){
if(aDest.mStr){
if(aDest.mOwnsBuffer){
nsAllocator::Free(aDest.mStr);
}
aDest.mStr=0;
aDest.mOwnsBuffer=0;
return PR_TRUE;
}
return PR_FALSE;
}
PRBool nsStr::Realloc(nsStr& aDest,PRUint32 aCount){
nsStr temp;
memcpy(&temp,&aDest,sizeof(aDest));
PRBool result=Alloc(temp,aCount);
if(result) {
Free(aDest);
aDest.mStr=temp.mStr;
aDest.mCapacity=temp.mCapacity;
aDest.mOwnsBuffer=temp.mOwnsBuffer;
}
return result;
}
//----------------------------------------------------------------------------------------
CBufDescriptor::CBufDescriptor(char* aString,PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength) {
mBuffer=aString;
mCharSize=eOneByte;
mStackBased=aStackBased;
mIsConst=PR_FALSE;
mLength=mCapacity=0;
if(aString && aCapacity>1) {
mCapacity=aCapacity-1;
mLength=(-1==aLength) ? strlen(aString) : aLength;
if(mLength>PRInt32(mCapacity))
mLength=mCapacity;
}
}
CBufDescriptor::CBufDescriptor(const char* aString,PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength) {
mBuffer=(char*)aString;
mCharSize=eOneByte;
mStackBased=aStackBased;
mIsConst=PR_TRUE;
mLength=mCapacity=0;
if(aString && aCapacity>1) {
mCapacity=aCapacity-1;
mLength=(-1==aLength) ? strlen(aString) : aLength;
if(mLength>PRInt32(mCapacity))
mLength=mCapacity;
}
}
CBufDescriptor::CBufDescriptor(PRUnichar* aString,PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength) {
mBuffer=(char*)aString;
mCharSize=eTwoByte;
mStackBased=aStackBased;
mLength=mCapacity=0;
mIsConst=PR_FALSE;
if(aString && aCapacity>1) {
mCapacity=aCapacity-1;
mLength=(-1==aLength) ? nsCRT::strlen(aString) : aLength;
if(mLength>PRInt32(mCapacity))
mLength=mCapacity;
}
}
CBufDescriptor::CBufDescriptor(const PRUnichar* aString,PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength) {
mBuffer=(char*)aString;
mCharSize=eTwoByte;
mStackBased=aStackBased;
mLength=mCapacity=0;
mIsConst=PR_TRUE;
if(aString && aCapacity>1) {
mCapacity=aCapacity-1;
mLength=(-1==aLength) ? nsCRT::strlen(aString) : aLength;
if(mLength>PRInt32(mCapacity))
mLength=mCapacity;
}
}
//----------------------------------------------------------------------------------------

View File

@@ -1,450 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/***********************************************************************
MODULE NOTES:
1. There are two philosophies to building string classes:
A. Hide the underlying buffer & offer API's allow indirect iteration
B. Reveal underlying buffer, risk corruption, but gain performance
We chose the option B for performance reasons.
2 Our internal buffer always holds capacity+1 bytes.
The nsStr struct is a simple structure (no methods) that contains
the necessary info to be described as a string. This simple struct
is manipulated by the static methods provided in this class.
(Which effectively makes this a library that works on structs).
There are also object-based versions called nsString and nsAutoString
which use nsStr but makes it look at feel like an object.
***********************************************************************/
/***********************************************************************
ASSUMPTIONS:
1. nsStrings and nsAutoString are always null terminated.
2. If you try to set a null char (via SetChar()) a new length is set
3. nsCStrings can be upsampled into nsString without data loss
4. Char searching is faster than string searching. Use char interfaces
if your needs will allow it.
5. It's easy to use the stack for nsAutostring buffer storage (fast too!).
See the CBufDescriptor class in this file.
6. It's ONLY ok to provide non-null-terminated buffers to Append() and Insert()
provided you specify a 0<n value for the optional count argument.
7. Downsampling from nsString to nsCString is lossy -- avoid it if possible!
8. Calls to ToNewCString() and ToNewUnicode() should be matched with calls to Recycle().
***********************************************************************/
/**********************************************************************************
AND NOW FOR SOME GENERAL DOCUMENTATION ON STRING USAGE...
The fundamental datatype in the string library is nsStr. It's a structure that
provides the buffer storage and meta-info. It also provides a C-style library
of functions for direct manipulation (for those of you who prefer K&R to Bjarne).
Here's a diagram of the class hierarchy:
nsStr
|___nsString
| |
| ------nsAutoString
|
|___nsCString
|
------nsCAutoString
Why so many string classes? The 4 variants give you the control you need to
determine the best class for your purpose. There are 2 dimensions to this
flexibility: 1) stack vs. heap; and 2) 1-byte chars vs. 2-byte chars.
Note: While nsAutoString and nsCAutoString begin life using stack-based storage,
they may not stay that way. Like all nsString classes, autostrings will
automatically grow to contain the data you provide. When autostrings
grow beyond their intrinsic buffer, they switch to heap based allocations.
(We avoid alloca to avoid considerable platform difficulties; see the
GNU documentation for more details).
I should also briefly mention that all the string classes use a "memory agent"
object to perform memory operations. This class proxies the standard nsAllocator
for actual memory calls, but knows the structure of nsStr making heap operations
more localized.
CHOOSING A STRING CLASS:
In order to choose a string class for you purpose, use this handy table:
heap-based stack-based
-----------------------------------
ascii data | nsCString nsCAutoString |
|----------------------------------
unicode data | nsString nsAutoString |
-----------------------------------
Note: The i18n folks will stenuously object if we get too carried away with the
use of nsCString's that pass interface boundaries. Try to limit your
use of these to external interfaces that demand them, or for your own
private purposes in cases where they'll never be seen by humans.
PERFORMANCE CONSIDERATIONS:
Here are a few tricks to know in order to get better string performance:
1) Try to limit conversions between ascii and unicode; By sticking with nsString
wherever possible your code will be i18n-compliant.
2) Preallocating your string buffer cuts down trips to the allocator. So if you
have need for an arbitrarily large buffer, pre-size it like this:
{
nsString mBuffer;
mBuffer.SetCapacity(aReasonableSize);
}
3) Allocating nsAutoString or nsCAutoString on the heap is memory inefficient
(after all, the whole point is to avoid a heap allocation of the buffer).
4) Consider using an autoString to write into your arbitrarily-sized stack buffers, rather
than it's own buffers.
For example, let's say you're going to call printf() to emit pretty-printed debug output
of your object. You know from experience that the pretty-printed version of your object
exceeds the capacity of an autostring. Ignoring memory considerations, you could simply
use nsCString, appending the stringized version of each of your class's data members.
This will probably result in calls to the heap manager.
But there's a way to do this without necessarily having to call the heap manager.
All you do is declare a stack based buffer and instruct nsCString to use that instead
of it's own internal buffer by using the CBufDescriptor class:
{
char theBuffer[256];
CBufDescritor theBufDecriptor( theBuffer, PR_TRUE, sizeof(theBuffer), 0);
nsCAutoString s3( theBufDescriptor );
s3="HELLO, my name is inigo montoya, you killed my father, prepare to die!.";
}
The assignment statment to s3 will cause the given string to be written to your
stack-based buffer via the normal nsString/nsCString interfaces. Cool, huh?
Note however that just like any other nsStringXXX use, if you write more data
than will fit in the buffer, a visit to the heap manager will be in order.
**********************************************************************************/
#ifndef _nsStr
#define _nsStr
#include "nscore.h"
#include "nsIAllocator.h"
#include <string.h>
//----------------------------------------------------------------------------------------
enum eCharSize {eOneByte=0,eTwoByte=1};
#define kDefaultCharSize eTwoByte
#define kRadix10 (10)
#define kRadix16 (16)
#define kAutoDetect (100)
#define kRadixUnknown (kAutoDetect+1)
const PRInt32 kDefaultStringSize = 64;
const PRInt32 kNotFound = -1;
//----------------------------------------------------------------------------------------
class NS_COM CBufDescriptor {
public:
CBufDescriptor(char* aString, PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength=-1);
CBufDescriptor(const char* aString, PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength=-1);
CBufDescriptor(PRUnichar* aString, PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength=-1);
CBufDescriptor(const PRUnichar* aString,PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength=-1);
char* mBuffer;
eCharSize mCharSize;
PRUint32 mCapacity;
PRInt32 mLength;
PRBool mStackBased;
PRBool mIsConst;
};
//----------------------------------------------------------------------------------------
struct NS_COM nsStr {
//----------------------------------------------------------------------------------------
nsStr() {
MOZ_COUNT_CTOR(nsStr);
}
~nsStr() {
MOZ_COUNT_DTOR(nsStr);
}
/**
* This method initializes an nsStr for use
*
* @update gess 01/04/99
* @param aString is the nsStr to be initialized
* @param aCharSize tells us the requested char size (1 or 2 bytes)
*/
static void Initialize(nsStr& aDest,eCharSize aCharSize);
/**
* This method initializes an nsStr for use
*
* @update gess 01/04/99
* @param aString is the nsStr to be initialized
* @param aCharSize tells us the requested char size (1 or 2 bytes)
*/
static void Initialize(nsStr& aDest,char* aCString,PRUint32 aCapacity,PRUint32 aLength,eCharSize aCharSize,PRBool aOwnsBuffer);
/**
* This method destroys the given nsStr, and *MAY*
* deallocate it's memory depending on the setting
* of the internal mOwnsBUffer flag.
*
* @update gess 01/04/99
* @param aString is the nsStr to be manipulated
* @param anAgent is the allocator to be used to the nsStr
*/
static void Destroy(nsStr& aDest);
/**
* These methods are where memory allocation/reallocation occur.
*
* @update gess 01/04/99
* @param aString is the nsStr to be manipulated
* @param anAgent is the allocator to be used on the nsStr
* @return
*/
static PRBool EnsureCapacity(nsStr& aString,PRUint32 aNewLength);
static PRBool GrowCapacity(nsStr& aString,PRUint32 aNewLength);
/**
* These methods are used to append content to the given nsStr
*
* @update gess 01/04/99
* @param aDest is the nsStr to be appended to
* @param aSource is the buffer to be copied from
* @param anOffset tells us where in source to start copying
* @param aCount tells us the (max) # of chars to copy
* @param anAgent is the allocator to be used for alloc/free operations
*/
static void Append(nsStr& aDest,const nsStr& aSource,PRUint32 anOffset,PRInt32 aCount);
/**
* These methods are used to assign contents of a source string to dest string
*
* @update gess 01/04/99
* @param aDest is the nsStr to be appended to
* @param aSource is the buffer to be copied from
* @param anOffset tells us where in source to start copying
* @param aCount tells us the (max) # of chars to copy
* @param anAgent is the allocator to be used for alloc/free operations
*/
static void Assign(nsStr& aDest,const nsStr& aSource,PRUint32 anOffset,PRInt32 aCount);
/**
* These methods are used to insert content from source string to the dest nsStr
*
* @update gess 01/04/99
* @param aDest is the nsStr to be appended to
* @param aDestOffset tells us where in dest to start insertion
* @param aSource is the buffer to be copied from
* @param aSrcOffset tells us where in source to start copying
* @param aCount tells us the (max) # of chars to insert
* @param anAgent is the allocator to be used for alloc/free operations
*/
static void Insert( nsStr& aDest,PRUint32 aDestOffset,const nsStr& aSource,PRUint32 aSrcOffset,PRInt32 aCount);
/**
* This method deletes chars from the given str.
* The given allocator may choose to resize the str as well.
*
* @update gess 01/04/99
* @param aDest is the nsStr to be deleted from
* @param aDestOffset tells us where in dest to start deleting
* @param aCount tells us the (max) # of chars to delete
* @param anAgent is the allocator to be used for alloc/free operations
*/
static void Delete(nsStr& aDest,PRUint32 aDestOffset,PRUint32 aCount);
/**
* This method is used to truncate the given string.
* The given allocator may choose to resize the str as well (but it's not likely).
*
* @update gess 01/04/99
* @param aDest is the nsStr to be appended to
* @param aDestOffset tells us where in dest to start insertion
* @param aSource is the buffer to be copied from
* @param aSrcOffset tells us where in source to start copying
* @param anAgent is the allocator to be used for alloc/free operations
*/
static void Truncate(nsStr& aDest,PRUint32 aDestOffset);
/**
* This method is used to perform a case conversion on the given string
*
* @update gess 01/04/99
* @param aDest is the nsStr to be case shifted
* @param toUpper tells us to go upper vs. lower
*/
static void ChangeCase(nsStr& aDest,PRBool aToUpper);
/**
* This method trims chars (given in aSet) from the edges of given buffer
*
* @update gess 01/04/99
* @param aDest is the buffer to be manipulated
* @param aSet tells us which chars to remove from given buffer
* @param aEliminateLeading tells us whether to strip chars from the start of the buffer
* @param aEliminateTrailing tells us whether to strip chars from the start of the buffer
*/
static void Trim(nsStr& aDest,const char* aSet,PRBool aEliminateLeading,PRBool aEliminateTrailing);
/**
* This method compresses duplicate runs of a given char from the given buffer
*
* @update gess 01/04/99
* @param aDest is the buffer to be manipulated
* @param aSet tells us which chars to compress from given buffer
* @param aChar is the replacement char
* @param aEliminateLeading tells us whether to strip chars from the start of the buffer
* @param aEliminateTrailing tells us whether to strip chars from the start of the buffer
*/
static void CompressSet(nsStr& aDest,const char* aSet,PRBool aEliminateLeading,PRBool aEliminateTrailing);
/**
* This method removes all occurances of chars in given set from aDest
*
* @update gess 01/04/99
* @param aDest is the buffer to be manipulated
* @param aSet tells us which chars to compress from given buffer
* @param aChar is the replacement char
* @param aEliminateLeading tells us whether to strip chars from the start of the buffer
* @param aEliminateTrailing tells us whether to strip chars from the start of the buffer
*/
static void StripChars(nsStr& aDest,const char* aSet);
/**
* This method compares the data bewteen two nsStr's
*
* @update gess 01/04/99
* @param aStr1 is the first buffer to be compared
* @param aStr2 is the 2nd buffer to be compared
* @param aCount is the number of chars to compare
* @param aIgnorecase tells us whether to use a case-sensitive comparison
* @return -1,0,1 depending on <,==,>
*/
static PRInt32 Compare(const nsStr& aDest,const nsStr& aSource,PRInt32 aCount,PRBool aIgnoreCase);
/**
* These methods scan the given string for 1 or more chars in a given direction
*
* @update gess 01/04/99
* @param aDest is the nsStr to be searched to
* @param aSource (or aChar) is the substr we're looking to find
* @param aIgnoreCase tells us whether to search in a case-sensitive manner
* @param anOffset tells us where in the dest string to start searching
* @return the index of the source (substr) in dest, or -1 (kNotFound) if not found.
*/
static PRInt32 FindSubstr(const nsStr& aDest,const nsStr& aSource, PRBool aIgnoreCase,PRInt32 anOffset);
static PRInt32 FindChar(const nsStr& aDest,PRUnichar aChar, PRBool aIgnoreCase,PRInt32 anOffset);
static PRInt32 FindCharInSet(const nsStr& aDest,const nsStr& aSet,PRBool aIgnoreCase,PRInt32 anOffset);
static PRInt32 RFindSubstr(const nsStr& aDest,const nsStr& aSource, PRBool aIgnoreCase,PRInt32 anOffset);
static PRInt32 RFindChar(const nsStr& aDest,PRUnichar aChar, PRBool aIgnoreCase,PRInt32 anOffset);
static PRInt32 RFindCharInSet(const nsStr& aDest,const nsStr& aSet,PRBool aIgnoreCase,PRInt32 anOffset);
PRUint32 mLength;
PRUint32 mCapacity;
eCharSize mCharSize;
PRBool mOwnsBuffer;
union {
char* mStr;
PRUnichar* mUStr;
};
private:
static PRBool Alloc(nsStr& aString,PRUint32 aCount);
static PRBool Realloc(nsStr& aString,PRUint32 aCount);
static PRBool Free(nsStr& aString);
};
/**************************************************************
A couple of tiny helper methods used in the string classes.
**************************************************************/
inline PRInt32 MinInt(PRInt32 anInt1,PRInt32 anInt2){
return (anInt1<anInt2) ? anInt1 : anInt2;
}
inline PRInt32 MaxInt(PRInt32 anInt1,PRInt32 anInt2){
return (anInt1<anInt2) ? anInt2 : anInt1;
}
inline void AddNullTerminator(nsStr& aDest) {
if(eTwoByte==aDest.mCharSize)
aDest.mUStr[aDest.mLength]=0;
else aDest.mStr[aDest.mLength]=0;
}
/**
* Return the given buffer to the heap manager. Calls allocator::Free()
* @return string length
*/
inline void Recycle( char* aBuffer) { nsAllocator::Free(aBuffer); }
inline void Recycle( PRUnichar* aBuffer) { nsAllocator::Free(aBuffer); }
/**
* This method is used to access a given char in the given string
*
* @update gess 01/04/99
* @param aDest is the nsStr to be appended to
* @param anIndex tells us where in dest to get the char from
* @return the given char, or 0 if anIndex is out of range
*/
inline PRUnichar GetCharAt(const nsStr& aDest,PRUint32 anIndex){
if(anIndex<aDest.mLength) {
return (eTwoByte==aDest.mCharSize) ? aDest.mUStr[anIndex] : aDest.mStr[anIndex];
}//if
return 0;
}
#endif

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/***********************************************************************
MODULE NOTES:
See nsStr.h for a more general description of string classes.
This version of the nsString class offers many improvements over the
original version:
1. Wide and narrow chars
2. Allocators
3. Much smarter autostrings
4. Subsumable strings
***********************************************************************/
#ifndef _nsCString_
#define _nsCString_
#include "nsString2.h"
#include "prtypes.h"
#include "nscore.h"
#include <stdio.h>
#include "nsStr.h"
#include "nsIAtom.h"
class NS_COM nsSubsumeCStr;
class NS_COM nsCString : public nsStr {
public:
/**
* Default constructor.
*/
nsCString();
/**
* This constructor accepts an isolatin string
* @param aCString is a ptr to a 1-byte cstr
*/
nsCString(const char* aCString,PRInt32 aLength=-1);
/**
* This constructor accepts a unichar string
* @param aCString is a ptr to a 2-byte cstr
*/
nsCString(const PRUnichar* aString,PRInt32 aLength=-1);
/**
* This is a copy constructor that accepts an nsStr
* @param reference to another nsCString
*/
nsCString(const nsStr&);
/**
* This is our copy constructor
* @param reference to another nsCString
*/
nsCString(const nsCString& aString);
/**
* This constructor takes a subsumestr
* @param reference to subsumestr
*/
nsCString(nsSubsumeCStr& aSubsumeStr);
/**
* Destructor
*
*/
virtual ~nsCString();
/**
* Retrieve the length of this string
* @return string length
*/
inline PRInt32 Length() const { return (PRInt32)mLength; }
/**
* Retrieve the size of this string
* @return string length
*/
virtual void SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
/**
* Call this method if you want to force a different string capacity
* @update gess7/30/98
* @param aLength -- contains new length for mStr
* @return
*/
void SetLength(PRUint32 aLength) {
Truncate(aLength);
}
/**
* Sets the new length of the string.
* @param aLength is new string length.
* @return nada
*/
void SetCapacity(PRUint32 aLength);
/**
* This method truncates this string to given length.
*
* @param anIndex -- new length of string
* @return nada
*/
void Truncate(PRInt32 anIndex=0);
/**
* Determine whether or not the characters in this
* string are in sorted order.
*
* @return TRUE if ordered.
*/
PRBool IsOrdered(void) const;
/**
* Determine whether or not this string has a length of 0
*
* @return TRUE if empty.
*/
PRBool IsEmpty(void) const {
return PRBool(0==mLength);
}
/**********************************************************************
Accessor methods...
*********************************************************************/
/**
* Retrieve const ptr to internal buffer; DO NOT TRY TO FREE IT!
*/
const char* GetBuffer(void) const;
/**
* Get nth character.
*/
PRUnichar operator[](PRUint32 anIndex) const;
PRUnichar CharAt(PRUint32 anIndex) const;
PRUnichar First(void) const;
PRUnichar Last(void) const;
PRBool SetCharAt(PRUnichar aChar,PRUint32 anIndex);
/**********************************************************************
String creation methods...
*********************************************************************/
/**
* Create a new string by appending given string to this
* @param aString -- 2nd string to be appended
* @return new string
*/
nsSubsumeCStr operator+(const nsCString& aString);
/**
* create a new string by adding this to the given char*.
* @param aCString is a ptr to cstring to be added to this
* @return newly created string
*/
nsSubsumeCStr operator+(const char* aCString);
/**
* create a new string by adding this to the given char.
* @param aChar is a char to be added to this
* @return newly created string
*/
nsSubsumeCStr operator+(PRUnichar aChar);
nsSubsumeCStr operator+(char aChar);
/**********************************************************************
Lexomorphic transforms...
*********************************************************************/
/**
* Converts chars in this to lowercase
* @update gess 7/27/98
*/
void ToLowerCase();
/**
* Converts chars in this to lowercase, and
* stores them in aOut
* @update gess 7/27/98
* @param aOut is a string to contain result
*/
void ToLowerCase(nsCString& aString) const;
/**
* Converts chars in this to uppercase
* @update gess 7/27/98
*/
void ToUpperCase();
/**
* Converts chars in this to lowercase, and
* stores them in a given output string
* @update gess 7/27/98
* @param aOut is a string to contain result
*/
void ToUpperCase(nsCString& aString) const;
/**
* This method is used to remove all occurances of the
* characters found in aSet from this string.
*
* @param aSet -- characters to be cut from this
* @return *this
*/
nsCString& StripChars(const char* aSet);
nsCString& StripChar(char aChar);
/**
* This method strips whitespace throughout the string
*
* @return this
*/
nsCString& StripWhitespace();
/**
* swaps occurence of 1 string for another
*
* @return this
*/
nsCString& ReplaceChar(PRUnichar aOldChar,PRUnichar aNewChar);
nsCString& ReplaceChar(const char* aSet,PRUnichar aNewChar);
PRInt32 CountChar(PRUnichar aChar);
/**
* This method trims characters found in aTrimSet from
* either end of the underlying string.
*
* @param aTrimSet -- contains chars to be trimmed from
* both ends
* @return this
*/
nsCString& Trim(const char* aSet,PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE);
/**
* This method strips whitespace from string.
* You can control whether whitespace is yanked from
* start and end of string as well.
*
* @param aEliminateLeading controls stripping of leading ws
* @param aEliminateTrailing controls stripping of trailing ws
* @return this
*/
nsCString& CompressSet(const char* aSet, PRUnichar aChar,PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE);
/**
* This method strips whitespace from string.
* You can control whether whitespace is yanked from
* start and end of string as well.
*
* @param aEliminateLeading controls stripping of leading ws
* @param aEliminateTrailing controls stripping of trailing ws
* @return this
*/
nsCString& CompressWhitespace( PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE);
/**********************************************************************
string conversion methods...
*********************************************************************/
operator char*() {return mStr;}
operator const char*() const {return (const char*)mStr;}
/**
* This method constructs a new nsCString that is a clone
* of this string.
*
*/
nsCString* ToNewString() const;
/**
* Creates an ISOLatin1 clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @return ptr to new isolatin1 string
*/
char* ToNewCString() const;
/**
* Creates a unicode clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @return ptr to new unicode string
*/
PRUnichar* ToNewUnicode() const;
/**
* Copies data from internal buffer onto given char* buffer
* NOTE: This only copies as many chars as will fit in given buffer (clips)
* @param aBuf is the buffer where data is stored
* @param aBuflength is the max # of chars to move to buffer
* @return ptr to given buffer
*/
char* ToCString(char* aBuf,PRUint32 aBufLength,PRUint32 anOffset=0) const;
/**
* Perform string to float conversion.
* @param aErrorCode will contain error if one occurs
* @return float rep of string value
*/
float ToFloat(PRInt32* aErrorCode) const;
/**
* Try to derive the radix from the value contained in this string
* @return kRadix10, kRadix16 or kAutoDetect (meaning unknown)
*/
PRUint32 DetermineRadix(void);
/**
* Perform string to int conversion.
* @param aErrorCode will contain error if one occurs
* @return int rep of string value
*/
PRInt32 ToInteger(PRInt32* aErrorCode,PRUint32 aRadix=kRadix10) const;
/**********************************************************************
String manipulation methods...
*********************************************************************/
/**
* Functionally equivalent to assign or operator=
*
*/
nsCString& SetString(const char* aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}
nsCString& SetString(const nsStr& aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}
/**
* assign given string to this string
* @param aStr: buffer to be assigned to this
* @param alength is the length of the given str (or -1)
if you want me to determine its length
* @return this
*/
nsCString& Assign(const nsStr& aString,PRInt32 aCount=-1);
nsCString& Assign(const char* aString,PRInt32 aCount=-1);
nsCString& Assign(const PRUnichar* aString,PRInt32 aCount=-1);
nsCString& Assign(PRUnichar aChar);
nsCString& Assign(char aChar);
/**
* here come a bunch of assignment operators...
* @param aString: string to be added to this
* @return this
*/
nsCString& operator=(const nsCString& aString) {return Assign(aString);}
nsCString& operator=(const nsStr& aString) {return Assign(aString);}
nsCString& operator=(PRUnichar aChar) {return Assign(aChar);}
nsCString& operator=(char aChar) {return Assign(aChar);}
nsCString& operator=(const char* aCString) {return Assign(aCString);}
nsCString& operator=(const PRUnichar* aString) {return Assign(aString);}
#ifdef AIX
nsCString& operator=(const nsSubsumeCStr& aSubsumeString); // AIX requires a const here
#else
nsCString& operator=(nsSubsumeCStr& aSubsumeString);
#endif
/**
* Here's a bunch of methods that append varying types...
* @param various...
* @return this
*/
nsCString& operator+=(const nsCString& aString){return Append(aString,aString.mLength);}
nsCString& operator+=(const char* aCString) {return Append(aCString);}
nsCString& operator+=(PRUnichar aChar){return Append(aChar);}
nsCString& operator+=(char aChar){return Append(aChar);}
/*
* Appends n characters from given string to this,
* This version computes the length of your given string
*
* @param aString is the source to be appended to this
* @return number of chars copied
*/
nsCString& Append(const nsCString& aString) {return Append(aString,aString.mLength);}
/*
* Appends n characters from given string to this,
*
* @param aString is the source to be appended to this
* @param aCount -- number of chars to copy; -1 tells us to compute the strlen for you
* @return number of chars copied
*/
nsCString& Append(const nsCString& aString,PRInt32 aCount);
nsCString& Append(const nsStr& aString,PRInt32 aCount=-1);
nsCString& Append(const char* aString,PRInt32 aCount=-1);
nsCString& Append(PRUnichar aChar);
nsCString& Append(char aChar);
nsCString& Append(PRInt32 aInteger,PRInt32 aRadix=10); //radix=8,10 or 16
nsCString& Append(float aFloat);
/*
* Copies n characters from this string to given string,
* starting at the leftmost offset.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @return number of chars copied
*/
PRUint32 Left(nsCString& aCopy,PRInt32 aCount) const;
/*
* Copies n characters from this string to given string,
* starting at the given offset.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @param anOffset -- position where copying begins
* @return number of chars copied
*/
PRUint32 Mid(nsCString& aCopy,PRUint32 anOffset,PRInt32 aCount) const;
/*
* Copies n characters from this string to given string,
* starting at rightmost char.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @return number of chars copied
*/
PRUint32 Right(nsCString& aCopy,PRInt32 aCount) const;
/*
* This method inserts n chars from given string into this
* string at str[anOffset].
*
* @param aCopy -- String to be inserted into this
* @param anOffset -- insertion position within this str
* @param aCount -- number of chars to be copied from aCopy
* @return number of chars inserted into this.
*/
nsCString& Insert(const nsCString& aCopy,PRUint32 anOffset,PRInt32 aCount=-1);
/**
* Insert a given string into this string at
* a specified offset.
*
* @param aString* to be inserted into this string
* @param anOffset is insert pos in str
* @return the number of chars inserted into this string
*/
nsCString& Insert(const char* aChar,PRUint32 anOffset,PRInt32 aCount=-1);
/**
* Insert a single char into this string at
* a specified offset.
*
* @param character to be inserted into this string
* @param anOffset is insert pos in str
* @return the number of chars inserted into this string
*/
nsCString& Insert(PRUnichar aChar,PRUint32 anOffset);
nsCString& Insert(char aChar,PRUint32 anOffset);
/*
* This method is used to cut characters in this string
* starting at anOffset, continuing for aCount chars.
*
* @param anOffset -- start pos for cut operation
* @param aCount -- number of chars to be cut
* @return *this
*/
nsCString& Cut(PRUint32 anOffset,PRInt32 aCount);
/**********************************************************************
Searching methods...
*********************************************************************/
/**
* Search for given character within this string.
* This method does so by using a binary search,
* so your string HAD BETTER BE ORDERED!
*
* @param aChar is the unicode char to be found
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 BinarySearch(PRUnichar aChar) const;
/**
* Search for given substring within this string
*
* @param aString is substring to be sought in this
* @param aIgnoreCase selects case sensitivity
* @param anOffset tells us where in this strig to start searching
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 Find(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 Find(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 Find(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* Search for given char within this string
*
* @param aString is substring to be sought in this
* @param anOffset tells us where in this strig to start searching
* @param aIgnoreCase selects case sensitivity
* @return find pos in string, or -1 (kNotFound)
*/
PRInt32 FindChar(PRUnichar aChar,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* This method searches this string for the first character
* found in the given charset
* @param aString contains set of chars to be found
* @param anOffset tells us where to start searching in this
* @return -1 if not found, else the offset in this
*/
PRInt32 FindCharInSet(const char* aString,PRInt32 anOffset=-1) const;
PRInt32 FindCharInSet(const PRUnichar* aString,PRInt32 anOffset=-1) const;
PRInt32 FindCharInSet(const nsStr& aString,PRInt32 anOffset=-1) const;
/**
* This methods scans the string backwards, looking for the given string
* @param aString is substring to be sought in this
* @param aIgnoreCase tells us whether or not to do caseless compare
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 RFind(const char* aCString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 RFind(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 RFind(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* Search for given char within this string
*
* @param aString is substring to be sought in this
* @param anOffset tells us where in this strig to start searching
* @param aIgnoreCase selects case sensitivity
* @return find pos in string, or -1 (kNotFound)
*/
PRInt32 RFindChar(PRUnichar aChar,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* This method searches this string for the last character
* found in the given string
* @param aString contains set of chars to be found
* @param anOffset tells us where to start searching in this
* @return -1 if not found, else the offset in this
*/
PRInt32 RFindCharInSet(const char* aString,PRInt32 anOffset=-1) const;
PRInt32 RFindCharInSet(const PRUnichar* aString,PRInt32 anOffset=-1) const;
PRInt32 RFindCharInSet(const nsStr& aString,PRInt32 anOffset=-1) const;
/**********************************************************************
Comparison methods...
*********************************************************************/
/**
* Compares a given string type to this string.
* @update gess 7/27/98
* @param S is the string to be compared
* @param aIgnoreCase tells us how to treat case
* @param aCount tells us how many chars to compare
* @return -1,0,1
*/
virtual PRInt32 Compare(const nsStr &aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
virtual PRInt32 Compare(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
virtual PRInt32 Compare(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
/**
* These methods compare a given string type to this one
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator==(const nsStr &aString) const;
PRBool operator==(const char* aString) const;
PRBool operator==(const PRUnichar* aString) const;
/**
* These methods perform a !compare of a given string type to this
* @param aString is the string to be compared to this
* @return TRUE
*/
PRBool operator!=(const nsStr &aString) const;
PRBool operator!=(const char* aString) const;
PRBool operator!=(const PRUnichar* aString) const;
/**
* These methods test if a given string is < than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator<(const nsStr &aString) const;
PRBool operator<(const char* aString) const;
PRBool operator<(const PRUnichar* aString) const;
/**
* These methods test if a given string is > than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator>(const nsStr &S) const;
PRBool operator>(const char* aString) const;
PRBool operator>(const PRUnichar* aString) const;
/**
* These methods test if a given string is <= than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator<=(const nsStr &S) const;
PRBool operator<=(const char* aString) const;
PRBool operator<=(const PRUnichar* aString) const;
/**
* These methods test if a given string is >= than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator>=(const nsStr &S) const;
PRBool operator>=(const char* aString) const;
PRBool operator>=(const PRUnichar* aString) const;
/**
* Compare this to given string; note that we compare full strings here.
* The optional length argument just lets us know how long the given string is.
* If you provide a length, it is compared to length of this string as an
* optimization.
*
* @param aString -- the string to compare to this
* @param aCount -- number of chars in given string you want to compare
* @return TRUE if equal
*/
PRBool Equals(const nsString &aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool EqualsIgnoreCase(const nsStr& aString) const;
PRBool EqualsIgnoreCase(const char* aString,PRInt32 aCount=-1) const;
PRBool EqualsIgnoreCase(const PRUnichar* aString,PRInt32 aCount=-1) const;
static void Recycle(nsCString* aString);
static nsCString* CreateString(void);
};
extern NS_COM int fputs(const nsCString& aString, FILE* out);
//ostream& operator<<(ostream& aStream,const nsCString& aString);
//virtual void DebugDump(ostream& aStream) const;
/**************************************************************
Here comes the AutoString class which uses internal memory
(typically found on the stack) for its default buffer.
If the buffer needs to grow, it gets reallocated on the heap.
**************************************************************/
class NS_COM nsCAutoString : public nsCString {
public:
nsCAutoString();
nsCAutoString(const char* aString,PRInt32 aLength=-1);
nsCAutoString(const CBufDescriptor& aBuffer);
nsCAutoString(const PRUnichar* aString,PRInt32 aLength=-1);
nsCAutoString(const nsStr& aString);
nsCAutoString(const nsCAutoString& aString);
#ifdef AIX
nsCAutoString(const nsSubsumeCStr& aSubsumeStr); // AIX requires a const
#else
nsCAutoString(nsSubsumeCStr& aSubsumeStr);
#endif // AIX
nsCAutoString(PRUnichar aChar);
virtual ~nsCAutoString();
nsCAutoString& operator=(const nsCString& aString) {nsCString::Assign(aString); return *this;}
nsCAutoString& operator=(const char* aCString) {nsCString::Assign(aCString); return *this;}
nsCAutoString& operator=(PRUnichar aChar) {nsCString::Assign(aChar); return *this;}
nsCAutoString& operator=(char aChar) {nsCString::Assign(aChar); return *this;}
/**
* Retrieve the size of this string
* @return string length
*/
virtual void SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
char mBuffer[kDefaultStringSize];
};
/***************************************************************
The subsumestr class is very unusual.
It differs from a normal string in that it doesn't use normal
copy semantics when another string is assign to this.
Instead, it "steals" the contents of the source string.
This is very handy for returning nsString classes as part of
an operator+(...) for example, in that it cuts down the number
of copy operations that must occur.
You should probably not use this class unless you really know
what you're doing.
***************************************************************/
class NS_COM nsSubsumeCStr : public nsCString {
public:
nsSubsumeCStr(nsStr& aString);
nsSubsumeCStr(PRUnichar* aString,PRBool assumeOwnership,PRInt32 aLength=-1);
nsSubsumeCStr(char* aString,PRBool assumeOwnership,PRInt32 aLength=-1);
};
#endif

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/***********************************************************************
MODULE NOTES:
See nsStr.h for a more general description of string classes.
This version of the nsString class offers many improvements over the
original version:
1. Wide and narrow chars
2. Allocators
3. Much smarter autostrings
4. Subsumable strings
***********************************************************************/
#ifndef _nsString_
#define _nsString_
#include "prtypes.h"
#include "nscore.h"
#include <stdio.h>
#include "nsString.h"
#include "nsIAtom.h"
#include "nsStr.h"
#include "nsCRT.h"
class nsISizeOfHandler;
#define nsString2 nsString
#define nsAutoString2 nsAutoString
class NS_COM nsSubsumeStr;
class NS_COM nsString : public nsStr {
public:
/**
* Default constructor.
*/
nsString();
/**
* This constructor accepts an isolatin string
* @param aCString is a ptr to a 1-byte cstr
*/
nsString(const char* aCString);
/**
* This constructor accepts a unichar string
* @param aCString is a ptr to a 2-byte cstr
*/
nsString(const PRUnichar* aString);
/**
* This is a copy constructor that accepts an nsStr
* @param reference to another nsString
*/
nsString(const nsStr&);
/**
* This is our copy constructor
* @param reference to another nsString
*/
nsString(const nsString& aString);
/**
* This constructor takes a subsumestr
* @param reference to subsumestr
*/
nsString(nsSubsumeStr& aSubsumeStr);
/**
* Destructor
*
*/
virtual ~nsString();
/**
* Retrieve the length of this string
* @return string length
*/
inline PRInt32 Length() const { return (PRInt32)mLength; }
/**
* Retrieve the size of this string
* @return string length
*/
virtual void SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
/**
* Call this method if you want to force a different string length
* @update gess7/30/98
* @param aLength -- contains new length for mStr
* @return
*/
void SetLength(PRUint32 aLength) {
Truncate(aLength);
}
/**
* Sets the new length of the string.
* @param aLength is new string length.
* @return nada
*/
void SetCapacity(PRUint32 aLength);
/**
* This method truncates this string to given length.
*
* @param anIndex -- new length of string
* @return nada
*/
void Truncate(PRInt32 anIndex=0);
/**
* Determine whether or not the characters in this
* string are in sorted order.
*
* @return TRUE if ordered.
*/
PRBool IsOrdered(void) const;
/**
* Determine whether or not the characters in this
* string are in store as 1 or 2 byte (unicode) strings.
*
* @return TRUE if ordered.
*/
PRBool IsUnicode(void) const {
PRBool result=PRBool(mCharSize==eTwoByte);
return result;
}
/**
* Determine whether or not this string has a length of 0
*
* @return TRUE if empty.
*/
PRBool IsEmpty(void) const {
return PRBool(0==mLength);
}
/**********************************************************************
Getters/Setters...
*********************************************************************/
/**
* Retrieve const ptr to internal buffer; DO NOT TRY TO FREE IT!
*/
const char* GetBuffer(void) const;
const PRUnichar* GetUnicode(void) const;
/**
* Get nth character.
*/
PRUnichar operator[](PRUint32 anIndex) const;
PRUnichar CharAt(PRUint32 anIndex) const;
PRUnichar First(void) const;
PRUnichar Last(void) const;
/**
* Set nth character.
*/
PRBool SetCharAt(PRUnichar aChar,PRUint32 anIndex);
/**********************************************************************
String concatenation methods...
*********************************************************************/
/**
* Create a new string by appending given string to this
* @param aString -- 2nd string to be appended
* @return new subsumable string
*/
nsSubsumeStr operator+(const nsStr& aString);
nsSubsumeStr operator+(const nsString& aString);
/**
* create a new string by adding this to the given cstring
* @param aCString is a ptr to cstring to be added to this
* @return newly created string
*/
nsSubsumeStr operator+(const char* aCString);
/**
* create a new string by adding this to the given prunichar*.
* @param aString is a ptr to UC-string to be added to this
* @return newly created string
*/
nsSubsumeStr operator+(const PRUnichar* aString);
/**
* create a new string by adding this to the given char.
* @param aChar is a char to be added to this
* @return newly created string
*/
nsSubsumeStr operator+(char aChar);
/**
* create a new string by adding this to the given char.
* @param aChar is a unichar to be added to this
* @return newly created string
*/
nsSubsumeStr operator+(PRUnichar aChar);
/**********************************************************************
Lexomorphic transforms...
*********************************************************************/
/**
* Converts chars in this to lowercase
* @update gess 7/27/98
*/
void ToLowerCase();
/**
* Converts chars in this to lowercase, and
* stores them in aOut
* @update gess 7/27/98
* @param aOut is a string to contain result
*/
void ToLowerCase(nsString& aString) const;
/**
* Converts chars in this to uppercase
* @update gess 7/27/98
*/
void ToUpperCase();
/**
* Converts chars in this to lowercase, and
* stores them in a given output string
* @update gess 7/27/98
* @param aOut is a string to contain result
*/
void ToUpperCase(nsString& aString) const;
/**
* This method is used to remove all occurances of the
* characters found in aSet from this string.
*
* @param aSet -- characters to be cut from this
* @return *this
*/
nsString& StripChars(const char* aSet);
nsString& StripChar(char aChar);
/**
* This method strips whitespace throughout the string
*
* @return this
*/
nsString& StripWhitespace();
/**
* swaps occurence of 1 string for another
*
* @return this
*/
nsString& ReplaceChar(PRUnichar anOldChar,PRUnichar aNewChar);
nsString& ReplaceChar(const char* aSet,PRUnichar aNewChar);
PRInt32 CountChar(PRUnichar aChar);
/**
* This method trims characters found in aTrimSet from
* either end of the underlying string.
*
* @param aTrimSet -- contains chars to be trimmed from
* both ends
* @return this
*/
nsString& Trim(const char* aSet,PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE);
/**
* This method strips whitespace from string.
* You can control whether whitespace is yanked from
* start and end of string as well.
*
* @param aEliminateLeading controls stripping of leading ws
* @param aEliminateTrailing controls stripping of trailing ws
* @return this
*/
nsString& CompressSet(const char* aSet, PRUnichar aChar,PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE);
/**
* This method strips whitespace from string.
* You can control whether whitespace is yanked from
* start and end of string as well.
*
* @param aEliminateLeading controls stripping of leading ws
* @param aEliminateTrailing controls stripping of trailing ws
* @return this
*/
nsString& CompressWhitespace( PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE);
/**********************************************************************
string conversion methods...
*********************************************************************/
/**
* This method constructs a new nsString is a clone of this string.
*
*/
nsString* ToNewString() const;
/**
* Creates an ISOLatin1 clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @return ptr to new isolatin1 string
*/
char* ToNewCString() const;
/**
* Creates an UTF8 clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @return ptr to new isolatin1 string
*/
char* ToNewUTF8String() const;
/**
* Creates a unicode clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @return ptr to new unicode string
*/
PRUnichar* ToNewUnicode() const;
/**
* Copies data from internal buffer onto given char* buffer
* NOTE: This only copies as many chars as will fit in given buffer (clips)
* @param aBuf is the buffer where data is stored
* @param aBuflength is the max # of chars to move to buffer
* @return ptr to given buffer
*/
char* ToCString(char* aBuf,PRUint32 aBufLength,PRUint32 anOffset=0) const;
/**
* Perform string to float conversion.
* @param aErrorCode will contain error if one occurs
* @return float rep of string value
*/
float ToFloat(PRInt32* aErrorCode) const;
/**
* Try to derive the radix from the value contained in this string
* @return kRadix10, kRadix16 or kAutoDetect (meaning unknown)
*/
PRUint32 DetermineRadix(void);
/**
* Perform string to int conversion.
* @param aErrorCode will contain error if one occurs
* @return int rep of string value
*/
PRInt32 ToInteger(PRInt32* aErrorCode,PRUint32 aRadix=kRadix10) const;
/**********************************************************************
String manipulation methods...
*********************************************************************/
/**
* Functionally equivalent to assign or operator=
*
*/
nsString& SetString(const char* aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}
nsString& SetString(const PRUnichar* aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}
nsString& SetString(const nsString& aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}
/**
* assign given string to this string
* @param aStr: buffer to be assigned to this
* @param alength is the length of the given str (or -1)
if you want me to determine its length
* @return this
*/
nsString& Assign(const nsStr& aString,PRInt32 aCount=-1);
nsString& Assign(const char* aString,PRInt32 aCount=-1);
nsString& Assign(const PRUnichar* aString,PRInt32 aCount=-1);
nsString& Assign(char aChar);
nsString& Assign(PRUnichar aChar);
/**
* here come a bunch of assignment operators...
* @param aString: string to be added to this
* @return this
*/
nsString& operator=(const nsString& aString) {return Assign(aString);}
nsString& operator=(const nsStr& aString) {return Assign(aString);}
nsString& operator=(char aChar) {return Assign(aChar);}
nsString& operator=(PRUnichar aChar) {return Assign(aChar);}
nsString& operator=(const char* aCString) {return Assign(aCString);}
nsString& operator=(const PRUnichar* aString) {return Assign(aString);}
#ifdef AIX
nsString& operator=(const nsSubsumeStr& aSubsumeString); // AIX requires a const here
#else
nsString& operator=(nsSubsumeStr& aSubsumeString);
#endif
/**
* Here's a bunch of methods that append varying types...
* @param various...
* @return this
*/
nsString& operator+=(const nsStr& aString){return Append(aString,aString.mLength);}
nsString& operator+=(const nsString& aString){return Append(aString,aString.mLength);}
nsString& operator+=(const char* aCString) {return Append(aCString);}
//nsString& operator+=(char aChar){return Append(aChar);}
nsString& operator+=(const PRUnichar* aUCString) {return Append(aUCString);}
nsString& operator+=(PRUnichar aChar){return Append(aChar);}
/*
* Appends n characters from given string to this,
* This version computes the length of your given string
*
* @param aString is the source to be appended to this
* @return number of chars copied
*/
nsString& Append(const nsStr& aString) {return Append(aString,aString.mLength);}
nsString& Append(const nsString& aString) {return Append(aString,aString.mLength);}
/*
* Appends n characters from given string to this,
*
* @param aString is the source to be appended to this
* @param aCount -- number of chars to copy; -1 tells us to compute the strlen for you
* @return number of chars copied
*/
nsString& Append(const nsStr& aString,PRInt32 aCount);
nsString& Append(const nsString& aString,PRInt32 aCount);
nsString& Append(const char* aString,PRInt32 aCount=-1);
nsString& Append(const PRUnichar* aString,PRInt32 aCount=-1);
nsString& Append(char aChar);
nsString& Append(PRUnichar aChar);
nsString& Append(PRInt32 aInteger,PRInt32 aRadix=10); //radix=8,10 or 16
nsString& Append(float aFloat);
/*
* Copies n characters from this string to given string,
* starting at the leftmost offset.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @return number of chars copied
*/
PRUint32 Left(nsString& aCopy,PRInt32 aCount) const;
/*
* Copies n characters from this string to given string,
* starting at the given offset.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @param anOffset -- position where copying begins
* @return number of chars copied
*/
PRUint32 Mid(nsString& aCopy,PRUint32 anOffset,PRInt32 aCount) const;
/*
* Copies n characters from this string to given string,
* starting at rightmost char.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @return number of chars copied
*/
PRUint32 Right(nsString& aCopy,PRInt32 aCount) const;
/*
* This method inserts n chars from given string into this
* string at str[anOffset].
*
* @param aCopy -- String to be inserted into this
* @param anOffset -- insertion position within this str
* @param aCount -- number of chars to be copied from aCopy
* @return number of chars inserted into this.
*/
nsString& Insert(const nsString& aCopy,PRUint32 anOffset,PRInt32 aCount=-1);
/**
* Insert a given string into this string at
* a specified offset.
*
* @param aString* to be inserted into this string
* @param anOffset is insert pos in str
* @return the number of chars inserted into this string
*/
nsString& Insert(const char* aChar,PRUint32 anOffset,PRInt32 aCount=-1);
nsString& Insert(const PRUnichar* aChar,PRUint32 anOffset,PRInt32 aCount=-1);
/**
* Insert a single char into this string at
* a specified offset.
*
* @param character to be inserted into this string
* @param anOffset is insert pos in str
* @return the number of chars inserted into this string
*/
//nsString& Insert(char aChar,PRUint32 anOffset);
nsString& Insert(PRUnichar aChar,PRUint32 anOffset);
/*
* This method is used to cut characters in this string
* starting at anOffset, continuing for aCount chars.
*
* @param anOffset -- start pos for cut operation
* @param aCount -- number of chars to be cut
* @return *this
*/
nsString& Cut(PRUint32 anOffset,PRInt32 aCount);
/**********************************************************************
Searching methods...
*********************************************************************/
/**
* Search for given character within this string.
* This method does so by using a binary search,
* so your string HAD BETTER BE ORDERED!
*
* @param aChar is the unicode char to be found
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 BinarySearch(PRUnichar aChar) const;
/**
* Search for given substring within this string
*
* @param aString is substring to be sought in this
* @param aIgnoreCase selects case sensitivity
* @param anOffset tells us where in this strig to start searching
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 Find(const nsString& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 Find(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 Find(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 Find(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* Search for given char within this string
*
* @param aString is substring to be sought in this
* @param anOffset tells us where in this strig to start searching
* @param aIgnoreCase selects case sensitivity
* @return find pos in string, or -1 (kNotFound)
*/
//PRInt32 Find(PRUnichar aChar,PRInt32 offset=-1,PRBool aIgnoreCase=PR_FALSE) const;
PRInt32 FindChar(PRUnichar aChar,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* This method searches this string for the first character
* found in the given charset
* @param aString contains set of chars to be found
* @param anOffset tells us where to start searching in this
* @return -1 if not found, else the offset in this
*/
PRInt32 FindCharInSet(const char* aString,PRInt32 anOffset=-1) const;
PRInt32 FindCharInSet(const PRUnichar* aString,PRInt32 anOffset=-1) const;
PRInt32 FindCharInSet(const nsStr& aString,PRInt32 anOffset=-1) const;
/**
* This methods scans the string backwards, looking for the given string
* @param aString is substring to be sought in this
* @param aIgnoreCase tells us whether or not to do caseless compare
* @param anOffset tells us where in this strig to start searching (counting from left)
*/
PRInt32 RFind(const char* aCString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 RFind(const nsString& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 RFind(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 RFind(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* Search for given char within this string
*
* @param aString is substring to be sought in this
* @param anOffset tells us where in this strig to start searching (counting from left)
* @param aIgnoreCase selects case sensitivity
* @return find pos in string, or -1 (kNotFound)
*/
//PRInt32 RFind(PRUnichar aChar,PRInt32 offset=-1,PRBool aIgnoreCase=PR_FALSE) const;
PRInt32 RFindChar(PRUnichar aChar,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* This method searches this string for the last character
* found in the given string
* @param aString contains set of chars to be found
* @param anOffset tells us where in this strig to start searching (counting from left)
* @return -1 if not found, else the offset in this
*/
PRInt32 RFindCharInSet(const char* aString,PRInt32 anOffset=-1) const;
PRInt32 RFindCharInSet(const PRUnichar* aString,PRInt32 anOffset=-1) const;
PRInt32 RFindCharInSet(const nsStr& aString,PRInt32 anOffset=-1) const;
/**********************************************************************
Comparison methods...
*********************************************************************/
/**
* Compares a given string type to this string.
* @update gess 7/27/98
* @param S is the string to be compared
* @param aIgnoreCase tells us how to treat case
* @param aCount tells us how many chars to compare
* @return -1,0,1
*/
virtual PRInt32 Compare(const nsString& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
virtual PRInt32 Compare(const nsStr &aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
virtual PRInt32 Compare(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
virtual PRInt32 Compare(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
/**
* These methods compare a given string type to this one
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator==(const nsString &aString) const;
PRBool operator==(const nsStr &aString) const;
PRBool operator==(const char *aString) const;
PRBool operator==(const PRUnichar* aString) const;
/**
* These methods perform a !compare of a given string type to this
* @param aString is the string to be compared to this
* @return TRUE
*/
PRBool operator!=(const nsString &aString) const;
PRBool operator!=(const nsStr &aString) const;
PRBool operator!=(const char* aString) const;
PRBool operator!=(const PRUnichar* aString) const;
/**
* These methods test if a given string is < than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator<(const nsString &aString) const;
PRBool operator<(const nsStr &aString) const;
PRBool operator<(const char* aString) const;
PRBool operator<(const PRUnichar* aString) const;
/**
* These methods test if a given string is > than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator>(const nsString &aString) const;
PRBool operator>(const nsStr &S) const;
PRBool operator>(const char* aString) const;
PRBool operator>(const PRUnichar* aString) const;
/**
* These methods test if a given string is <= than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator<=(const nsString &aString) const;
PRBool operator<=(const nsStr &S) const;
PRBool operator<=(const char* aString) const;
PRBool operator<=(const PRUnichar* aString) const;
/**
* These methods test if a given string is >= than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator>=(const nsString &aString) const;
PRBool operator>=(const nsStr &S) const;
PRBool operator>=(const char* aString) const;
PRBool operator>=(const PRUnichar* aString) const;
/**
* Compare this to given string; note that we compare full strings here.
* The optional length argument just lets us know how long the given string is.
* If you provide a length, it is compared to length of this string as an
* optimization.
*
* @param aString -- the string to compare to this
* @param aCount -- number of chars to be compared.
* @return TRUE if equal
*/
PRBool Equals(const nsString &aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(/*FIX: const */nsIAtom* anAtom,PRBool aIgnoreCase) const;
PRBool Equals(const PRUnichar* s1, const PRUnichar* s2,PRBool aIgnoreCase=PR_FALSE) const;
PRBool EqualsIgnoreCase(const nsString& aString) const;
PRBool EqualsIgnoreCase(const char* aString,PRInt32 aCount=-1) const;
PRBool EqualsIgnoreCase(/*FIX: const */nsIAtom *aAtom) const;
PRBool EqualsIgnoreCase(const PRUnichar* s1, const PRUnichar* s2) const;
/**
* Determine if given buffer is plain ascii
*
* @param aBuffer -- if null, then we test *this, otherwise we test given buffer
* @return TRUE if is all ascii chars or if strlen==0
*/
PRBool IsASCII(const PRUnichar* aBuffer=0);
/**
* Determine if given char is a valid space character
*
* @param aChar is character to be tested
* @return TRUE if is valid space char
*/
static PRBool IsSpace(PRUnichar ch);
/**
* Determine if given char in valid alpha range
*
* @param aChar is character to be tested
* @return TRUE if in alpha range
*/
static PRBool IsAlpha(PRUnichar ch);
/**
* Determine if given char is valid digit
*
* @param aChar is character to be tested
* @return TRUE if char is a valid digit
*/
static PRBool IsDigit(PRUnichar ch);
static void Recycle(nsString* aString);
static nsString* CreateString(void);
};
extern NS_COM int fputs(const nsString& aString, FILE* out);
//ostream& operator<<(ostream& aStream,const nsString& aString);
//virtual void DebugDump(ostream& aStream) const;
/**************************************************************
Here comes the AutoString class which uses internal memory
(typically found on the stack) for its default buffer.
If the buffer needs to grow, it gets reallocated on the heap.
**************************************************************/
class NS_COM nsAutoString : public nsString {
public:
nsAutoString();
nsAutoString(const char* aCString,PRInt32 aLength=-1);
nsAutoString(const PRUnichar* aString,PRInt32 aLength=-1);
nsAutoString(const CBufDescriptor& aBuffer);
nsAutoString(const nsStr& aString);
nsAutoString(const nsAutoString& aString);
#ifdef AIX
nsAutoString(const nsSubsumeStr& aSubsumeStr); // AIX requires a const
#else
nsAutoString(nsSubsumeStr& aSubsumeStr);
#endif // AIX
nsAutoString(PRUnichar aChar);
virtual ~nsAutoString();
nsAutoString& operator=(const nsStr& aString) {nsString::Assign(aString); return *this;}
nsAutoString& operator=(const nsAutoString& aString) {nsString::Assign(aString); return *this;}
nsAutoString& operator=(const char* aCString) {nsString::Assign(aCString); return *this;}
nsAutoString& operator=(char aChar) {nsString::Assign(aChar); return *this;}
nsAutoString& operator=(const PRUnichar* aBuffer) {nsString::Assign(aBuffer); return *this;}
nsAutoString& operator=(PRUnichar aChar) {nsString::Assign(aChar); return *this;}
/**
* Retrieve the size of this string
* @return string length
*/
virtual void SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
char mBuffer[kDefaultStringSize<<eTwoByte];
};
/***************************************************************
The subsumestr class is very unusual.
It differs from a normal string in that it doesn't use normal
copy semantics when another string is assign to this.
Instead, it "steals" the contents of the source string.
This is very handy for returning nsString classes as part of
an operator+(...) for example, in that it cuts down the number
of copy operations that must occur.
You should probably not use this class unless you really know
what you're doing.
***************************************************************/
class NS_COM nsSubsumeStr : public nsString {
public:
nsSubsumeStr(nsStr& aString);
nsSubsumeStr(PRUnichar* aString,PRBool assumeOwnership,PRInt32 aLength=-1);
nsSubsumeStr(char* aString,PRBool assumeOwnership,PRInt32 aLength=-1);
};
#endif

View File

@@ -1,179 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsDebug.h"
#include "nsIAllocator.h"
#include "nsXPIDLString.h"
#include "plstr.h"
// If the allocator changes, fix it here.
#define XPIDL_STRING_ALLOC(__len) ((PRUnichar*) nsAllocator::Alloc((__len) * sizeof(PRUnichar)))
#define XPIDL_CSTRING_ALLOC(__len) ((char*) nsAllocator::Alloc((__len) * sizeof(char)))
#define XPIDL_FREE(__ptr) (nsAllocator::Free(__ptr))
////////////////////////////////////////////////////////////////////////
// nsXPIDLString
nsXPIDLString::nsXPIDLString()
: mBuf(0),
mBufOwner(PR_FALSE)
{
}
nsXPIDLString::~nsXPIDLString()
{
if (mBufOwner && mBuf)
XPIDL_FREE(mBuf);
}
nsXPIDLString::operator const PRUnichar*()
{
return mBuf;
}
PRUnichar*
nsXPIDLString::Copy(const PRUnichar* aString)
{
NS_ASSERTION(aString, "null ptr");
if (! aString)
return 0;
PRInt32 len = 0;
{
const PRUnichar* p = aString;
while (*p++)
len++;
}
PRUnichar* result = XPIDL_STRING_ALLOC(len + 1);
if (result) {
PRUnichar* q = result;
while (*aString) {
*q = *aString;
q++;
aString++;
}
*q = '\0';
}
return result;
}
PRUnichar**
nsXPIDLString::StartAssignmentByValue()
{
if (mBufOwner && mBuf)
XPIDL_FREE(mBuf);
mBuf = 0;
mBufOwner = PR_TRUE;
return &mBuf;
}
const PRUnichar**
nsXPIDLString::StartAssignmentByReference()
{
if (mBufOwner && mBuf)
XPIDL_FREE(mBuf);
mBuf = 0;
mBufOwner = PR_FALSE;
return (const PRUnichar**) &mBuf;
}
////////////////////////////////////////////////////////////////////////
// nsXPIDLCString
nsXPIDLCString::nsXPIDLCString()
: mBuf(0),
mBufOwner(PR_FALSE)
{
}
nsXPIDLCString::~nsXPIDLCString()
{
if (mBufOwner && mBuf)
XPIDL_FREE(mBuf);
}
nsXPIDLCString& nsXPIDLCString::operator =(const char* aCString)
{
if (mBufOwner && mBuf)
XPIDL_FREE(mBuf);
mBuf = Copy(aCString);
mBufOwner = PR_TRUE;
return *this;
}
nsXPIDLCString::operator const char*()
{
return mBuf;
}
char*
nsXPIDLCString::Copy(const char* aCString)
{
NS_ASSERTION(aCString, "null ptr");
if (! aCString)
return 0;
PRInt32 len = PL_strlen(aCString);
char* result = XPIDL_CSTRING_ALLOC(len + 1);
if (result)
PL_strcpy(result, aCString);
return result;
}
char**
nsXPIDLCString::StartAssignmentByValue()
{
if (mBufOwner && mBuf)
XPIDL_FREE(mBuf);
mBuf = 0;
mBufOwner = PR_TRUE;
return &mBuf;
}
const char**
nsXPIDLCString::StartAssignmentByReference()
{
if (mBufOwner && mBuf)
XPIDL_FREE(mBuf);
mBuf = 0;
mBufOwner = PR_FALSE;
return (const char**) &mBuf;
}

View File

@@ -1,302 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/*
A set of string wrapper classes that ease transition to use of XPIDL
interfaces. nsXPIDLString and nsXPIDLCString are to XPIDL `wstring'
and `string' out params as nsCOMPtr is to generic XPCOM interface
pointers. They help you deal with object ownership.
Consider the following interface:
interface nsIFoo {
attribute string Bar;
};
This will generate the following C++ header file:
class nsIFoo {
NS_IMETHOD SetBar(const PRUnichar* aValue);
NS_IMETHOD GetBar(PRUnichar* *aValue);
};
The GetBar() method will allocate a copy of the nsIFoo object's
"bar" attribute, and leave you to deal with freeing it:
nsIFoo* aFoo; // assume we get this somehow
PRUnichar* bar;
aFoo->GetFoo(&bar);
// Use bar here...
printf("bar is %s!\n", bar);
nsAllocator::Free(bar);
This makes your life harder, because you need to convolute your code
to ensure that you don't leak `bar'.
Enter nsXPIDLString, which manages the ownership of the allocated
string, and automatically destroys it when the nsXPIDLString goes
out of scope:
nsIFoo* aFoo;
nsXPIDLString bar;
aFoo->GetFoo( getter_Copies(bar) );
// Use bar here...
printf("bar is %s!\n", (const char*) bar);
// no need to remember to nsAllocator::Free().
Like nsCOMPtr, nsXPIDLString uses some syntactic sugar to make it
painfully clear exactly what the code expects. You need to wrap an
nsXPIDLString object with either `getter_Copies()' or
`getter_Shares()' before passing it to a getter: these tell the
nsXPIDLString how ownership is being handled.
In the case of `getter_Copies()', the callee is allocating a copy
(which is usually the case). In the case of `getter_Shares()', the
callee is returning a const reference to `the real deal' (this can
be done using the [shared] attribute in XPIDL).
*/
#ifndef nsXPIDLString_h__
#define nsXPIDLString_h__
#include "nsCom.h"
#include "prtypes.h"
#ifndef __PRUNICHAR__
#define __PRUNICHAR__
typedef PRUint16 PRUnichar;
#endif /* __PRUNICHAR__ */
////////////////////////////////////////////////////////////////////////
// nsXPIDLString
//
// A wrapper for Unicode strings. With the |getter_Copies()| and
// |getter_Shares()| helper functions, this can be used instead of
// the "naked" |PRUnichar*| interface for |wstring| parameters in
// XPIDL interfaces.
//
class NS_COM nsXPIDLString {
private:
PRUnichar* mBuf;
PRBool mBufOwner;
PRUnichar** StartAssignmentByValue();
const PRUnichar** StartAssignmentByReference();
public:
/**
* Construct a new, uninitialized wrapper for a Unicode string.
*/
nsXPIDLString();
virtual ~nsXPIDLString();
/**
* Return a reference to the immutable Unicode string.
*/
operator const PRUnichar*();
/**
* Make a copy of the Unicode string. Use this function in the
* callee to ensure that the correct memory allocator is used.
*/
static PRUnichar* Copy(const PRUnichar* aString);
// A helper class for assignment-by-value. This class is an
// implementation detail and should not be considered part of the
// public interface.
class NS_COM GetterCopies {
private:
nsXPIDLString& mXPIDLString;
public:
GetterCopies(nsXPIDLString& aXPIDLString)
: mXPIDLString(aXPIDLString) {}
operator PRUnichar**() {
return mXPIDLString.StartAssignmentByValue();
}
friend GetterCopies getter_Copies(nsXPIDLString& aXPIDLString);
};
friend class GetterCopies;
// A helper class for assignment-by-reference. This class is an
// implementation detail and should not be considered part of the
// public interface.
class NS_COM GetterShares {
private:
nsXPIDLString& mXPIDLString;
public:
GetterShares(nsXPIDLString& aXPIDLString)
: mXPIDLString(aXPIDLString) {}
operator const PRUnichar**() {
return mXPIDLString.StartAssignmentByReference();
}
friend GetterShares getter_Shares(nsXPIDLString& aXPIDLString);
};
friend class GetterShares;
private:
// not to be implemented
nsXPIDLString(nsXPIDLString& /* aXPIDLString */) {}
nsXPIDLString& operator =(nsXPIDLString& /* aXPIDLString */) { return *this; }
};
/**
* Use this function to "wrap" the nsXPIDLString object that is to
* receive an |out| value.
*/
inline nsXPIDLString::GetterCopies
getter_Copies(nsXPIDLString& aXPIDLString)
{
return nsXPIDLString::GetterCopies(aXPIDLString);
}
/**
* Use this function to "wrap" the nsXPIDLString object that is to
* receive a |[shared] out| value.
*/
inline nsXPIDLString::GetterShares
getter_Shares(nsXPIDLString& aXPIDLString)
{
return nsXPIDLString::GetterShares(aXPIDLString);
}
////////////////////////////////////////////////////////////////////////
// nsXPIDLCString
//
// A wrapper for Unicode strings. With the |getter_Copies()| and
// |getter_Shares()| helper functions, this can be used instead of
// the "naked" |char*| interface for |string| parameters in XPIDL
// interfaces.
//
class NS_COM nsXPIDLCString {
private:
char* mBuf;
PRBool mBufOwner;
char** StartAssignmentByValue();
const char** StartAssignmentByReference();
public:
/**
* Construct a new, uninitialized wrapper for a single-byte string.
*/
nsXPIDLCString();
virtual ~nsXPIDLCString();
/**
* Assign a single-byte string to this wrapper. Copies and owns the result.
*/
nsXPIDLCString& operator =(const char* aString);
/**
* Return a reference to the immutable single-byte string.
*/
operator const char*();
/**
* Make a copy of the single-byte string. Use this function in the
* callee to ensure that the correct memory allocator is used.
*/
static char* Copy(const char* aString);
// A helper class for assignment-by-value. This class is an
// implementation detail and should not be considered part of the
// public interface.
class NS_COM GetterCopies {
private:
nsXPIDLCString& mXPIDLString;
public:
GetterCopies(nsXPIDLCString& aXPIDLString)
: mXPIDLString(aXPIDLString) {}
operator char**() {
return mXPIDLString.StartAssignmentByValue();
}
friend GetterCopies getter_Copies(nsXPIDLCString& aXPIDLString);
};
friend class GetterCopies;
// A helper class for assignment-by-reference. This class is an
// implementation detail and should not be considered part of the
// public interface.
class NS_COM GetterShares {
private:
nsXPIDLCString& mXPIDLString;
public:
GetterShares(nsXPIDLCString& aXPIDLString)
: mXPIDLString(aXPIDLString) {}
operator const char**() {
return mXPIDLString.StartAssignmentByReference();
}
friend GetterShares getter_Shares(nsXPIDLCString& aXPIDLString);
};
friend class GetterShares;
private:
// not to be implemented
nsXPIDLCString(nsXPIDLCString& /* aXPIDLString */) {}
nsXPIDLCString& operator =(nsXPIDLCString& /* aXPIDLCString */) { return *this; }
};
/**
* Use this function to "wrap" the nsXPIDLCString object that is to
* receive an |out| value.
*/
inline nsXPIDLCString::GetterCopies
getter_Copies(nsXPIDLCString& aXPIDLString)
{
return nsXPIDLCString::GetterCopies(aXPIDLString);
}
/**
* Use this function to "wrap" the nsXPIDLCString object that is to
* receive a |[shared] out| value.
*/
inline nsXPIDLCString::GetterShares
getter_Shares(nsXPIDLCString& aXPIDLString)
{
return nsXPIDLCString::GetterShares(aXPIDLString);
}
#endif // nsXPIDLString_h__

View File

@@ -1,30 +0,0 @@
nsAVLTree.h
nsCppSharedAllocator.h
nsCRT.h
nsDeque.h
nsEnumeratorUtils.h
nsHashtable.h
nsHashtableEnumerator.h
nsIArena.h
nsIBuffer.h
nsIByteBuffer.h
nsIObserverList.h
nsIPageManager.h
nsIProperties.h
nsISimpleEnumerator.h
nsISizeOfHandler.h
nsIUnicharBuffer.h
nsIVariant.h
nsInt64.h
nsQuickSort.h
nsStr.h
nsString.h
nsString2.h
nsSupportsPrimitives.h
nsTime.h
nsUnitConversion.h
nsVector.h
nsVoidArray.h
nsXPIDLString.h
plvector.h
nsTextFormater.h

View File

@@ -1,6 +0,0 @@
nsIAtom.idl
nsICollection.idl
nsIEnumerator.idl
nsIObserver.idl
nsIObserverService.idl
nsISupportsArray.idl

View File

@@ -1,113 +0,0 @@
#
# The contents of this file are subject to the Netscape Public License
# Version 1.0 (the "NPL"); you may not use this file except in
# compliance with the NPL. You may obtain a copy of the NPL at
# http://www.mozilla.org/NPL/
#
# Software distributed under the NPL is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
# for the specific language governing rights and limitations under the
# NPL.
#
# The Initial Developer of this code under the NPL is Netscape
# Communications Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All Rights
# Reserved.
#
DEPTH = ../..
topsrcdir = @top_srcdir@
srcdir = @srcdir@
VPATH = @srcdir@
include $(DEPTH)/config/autoconf.mk
MODULE = xpcom
XPIDL_MODULE = xpcom_ds
LIBRARY_NAME = xpcomds_s
REQUIRES = xpcom uconv unicharutil
CPPSRCS = \
nsArena.cpp \
nsAtomTable.cpp \
nsAVLTree.cpp \
nsByteBuffer.cpp \
nsCRT.cpp \
nsConjoiningEnumerator.cpp \
nsDeque.cpp \
nsEmptyEnumerator.cpp \
nsEnumeratorUtils.cpp \
nsHashtable.cpp \
nsHashtableEnumerator.cpp \
nsObserver.cpp \
nsObserverList.cpp \
nsObserverService.cpp \
nsProperties.cpp \
nsQuickSort.cpp \
nsSizeOfHandler.cpp \
nsStr.cpp \
nsString.cpp \
nsString2.cpp \
nsSupportsArray.cpp \
nsSupportsArrayEnumerator.cpp \
nsSupportsPrimitives.cpp \
nsUnicharBuffer.cpp \
nsVariant.cpp \
nsVoidArray.cpp \
nsXPIDLString.cpp \
plvector.cpp \
nsTextFormater.cpp \
$(NULL)
EXPORTS = \
nsAVLTree.h \
nsCppSharedAllocator.h \
nsCRT.h \
nsDeque.h \
nsEnumeratorUtils.h \
nsHashtable.h \
nsHashtableEnumerator.h \
nsIArena.h \
nsIByteBuffer.h \
nsIObserverList.h \
nsIProperties.h \
nsISimpleEnumerator.h \
nsISizeOfHandler.h \
nsIUnicharBuffer.h \
nsIVariant.h \
nsInt64.h \
nsQuickSort.h \
nsStr.h \
nsString.h \
nsString2.h \
nsSupportsPrimitives.h \
nsTime.h \
nsUnitConversion.h \
nsVector.h \
nsVoidArray.h \
nsXPIDLString.h \
plvector.h \
nsTextFormater.h \
$(NULL)
XPIDLSRCS = \
nsIAtom.idl \
nsICollection.idl \
nsIEnumerator.idl \
nsIObserver.idl \
nsIObserverService.idl \
nsISupportsArray.idl \
nsISupportsPrimitives.idl \
$(NULL)
EXPORTS := $(addprefix $(srcdir)/, $(EXPORTS))
# we don't want the shared lib, but we want to force the creation of a static lib.
override NO_SHARED_LIB=1
override NO_STATIC_LIB=
include $(topsrcdir)/config/rules.mk
DEFINES += -D_IMPL_NS_COM -D_IMPL_NS_BASE

View File

@@ -1,758 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/******************************************************************************************
MODULE NOTES:
This file contains the workhorse copy and shift functions used in nsStrStruct.
Ultimately, I plan to make the function pointers in this system available for
use by external modules. They'll be able to install their own "handlers".
Not so, today though.
*******************************************************************************************/
#ifndef _BUFFERROUTINES_H
#define _BUFFERROUTINES_H
#include "nsCRT.h"
#ifndef RICKG_TESTBED
#include "nsUnicharUtilCIID.h"
#include "nsIServiceManager.h"
#include "nsICaseConversion.h"
#endif
#define KSHIFTLEFT (0)
#define KSHIFTRIGHT (1)
inline PRUnichar GetUnicharAt(const char* aString,PRUint32 anIndex) {
return ((PRUnichar*)aString)[anIndex];
}
inline PRUnichar GetCharAt(const char* aString,PRUint32 anIndex) {
return (PRUnichar)aString[anIndex];
}
//----------------------------------------------------------------------------------------
//
// This set of methods is used to shift the contents of a char buffer.
// The functions are differentiated by shift direction and the underlying charsize.
//
/**
* This method shifts single byte characters left by a given amount from an given offset.
* @update gess 01/04/99
* @param aDest is a ptr to a cstring where left-shift is to be performed
* @param aLength is the known length of aDest
* @param anOffset is the index into aDest where shifting shall begin
* @param aCount is the number of chars to be "cut"
*/
void ShiftCharsLeft(char* aDest,PRUint32 aLength,PRUint32 anOffset,PRUint32 aCount) {
char* dst = aDest+anOffset;
char* src = aDest+anOffset+aCount;
memmove(dst,src,aLength-(aCount+anOffset));
}
/**
* This method shifts single byte characters right by a given amount from an given offset.
* @update gess 01/04/99
* @param aDest is a ptr to a cstring where the shift is to be performed
* @param aLength is the known length of aDest
* @param anOffset is the index into aDest where shifting shall begin
* @param aCount is the number of chars to be "inserted"
*/
void ShiftCharsRight(char* aDest,PRUint32 aLength,PRUint32 anOffset,PRUint32 aCount) {
char* src = aDest+anOffset;
char* dst = aDest+anOffset+aCount;
memmove(dst,src,aLength-anOffset);
}
/**
* This method shifts unicode characters by a given amount from an given offset.
* @update gess 01/04/99
* @param aDest is a ptr to a cstring where the shift is to be performed
* @param aLength is the known length of aDest
* @param anOffset is the index into aDest where shifting shall begin
* @param aCount is the number of chars to be "cut"
*/
void ShiftDoubleCharsLeft(char* aDest,PRUint32 aLength,PRUint32 anOffset,PRUint32 aCount) {
PRUnichar* root=(PRUnichar*)aDest;
PRUnichar* dst = root+anOffset;
PRUnichar* src = root+anOffset+aCount;
memmove(dst,src,(aLength-(aCount+anOffset))*sizeof(PRUnichar));
}
/**
* This method shifts unicode characters by a given amount from an given offset.
* @update gess 01/04/99
* @param aDest is a ptr to a cstring where the shift is to be performed
* @param aLength is the known length of aDest
* @param anOffset is the index into aDest where shifting shall begin
* @param aCount is the number of chars to be "inserted"
*/
void ShiftDoubleCharsRight(char* aDest,PRUint32 aLength,PRUint32 anOffset,PRUint32 aCount) {
PRUnichar* root=(PRUnichar*)aDest;
PRUnichar* src = root+anOffset;
PRUnichar* dst = root+anOffset+aCount;
memmove(dst,src,sizeof(PRUnichar)*(aLength-anOffset));
}
typedef void (*ShiftChars)(char* aDest,PRUint32 aLength,PRUint32 anOffset,PRUint32 aCount);
ShiftChars gShiftChars[2][2]= {
{&ShiftCharsLeft,&ShiftCharsRight},
{&ShiftDoubleCharsLeft,&ShiftDoubleCharsRight}
};
//----------------------------------------------------------------------------------------
//
// This set of methods is used to copy one buffer onto another.
// The functions are differentiated by the size of source and dest character sizes.
// WARNING: Your destination buffer MUST be big enough to hold all the source bytes.
// We don't validate these ranges here (this should be done in higher level routines).
//
/**
* Going 1 to 1 is easy, since we assume ascii. No conversions are necessary.
* @update gess 01/04/99
* @param aDest is the destination buffer
* @param aDestOffset is the pos to start copy to in the dest buffer
* @param aSource is the source buffer
* @param anOffset is the offset to start copying from in the source buffer
* @param aCount is the (max) number of chars to copy
*/
void CopyChars1To1(char* aDest,PRInt32 anDestOffset,const char* aSource,PRUint32 anOffset,PRUint32 aCount) {
char* dst = aDest+anDestOffset;
char* src = (char*)aSource+anOffset;
memcpy(dst,src,aCount);
}
/**
* Going 1 to 2 requires a conversion from ascii to unicode. This can be expensive.
* @param aDest is the destination buffer
* @param aDestOffset is the pos to start copy to in the dest buffer
* @param aSource is the source buffer
* @param anOffset is the offset to start copying from in the source buffer
* @param aCount is the (max) number of chars to copy
*/
void CopyChars1To2(char* aDest,PRInt32 anDestOffset,const char* aSource,PRUint32 anOffset,PRUint32 aCount) {
PRUnichar* theDest=(PRUnichar*)aDest;
PRUnichar* to = theDest+anDestOffset;
const unsigned char* first= (const unsigned char*)aSource+anOffset;
const unsigned char* last = first+aCount;
//now loop over characters, shifting them left...
while(first<last) {
*to=(PRUnichar)(*first);
to++;
first++;
}
}
/**
* Going 2 to 1 requires a conversion from unicode down to ascii. This can be lossy.
* @update gess 01/04/99
* @param aDest is the destination buffer
* @param aDestOffset is the pos to start copy to in the dest buffer
* @param aSource is the source buffer
* @param anOffset is the offset to start copying from in the source buffer
* @param aCount is the (max) number of chars to copy
*/
void CopyChars2To1(char* aDest,PRInt32 anDestOffset,const char* aSource,PRUint32 anOffset,PRUint32 aCount) {
char* to = aDest+anDestOffset;
PRUnichar* theSource=(PRUnichar*)aSource;
const PRUnichar* first= theSource+anOffset;
const PRUnichar* last = first+aCount;
//now loop over characters, shifting them left...
while(first<last) {
if(*first<256)
*to=(char)*first;
else *to='.';
to++;
first++;
}
}
/**
* Going 2 to 2 is fast and efficient.
* @update gess 01/04/99
* @param aDest is the destination buffer
* @param aDestOffset is the pos to start copy to in the dest buffer
* @param aSource is the source buffer
* @param anOffset is the offset to start copying from in the source buffer
* @param aCount is the (max) number of chars to copy
*/
void CopyChars2To2(char* aDest,PRInt32 anDestOffset,const char* aSource,PRUint32 anOffset,PRUint32 aCount) {
PRUnichar* theDest=(PRUnichar*)aDest;
PRUnichar* to = theDest+anDestOffset;
PRUnichar* theSource=(PRUnichar*)aSource;
PRUnichar* from= theSource+anOffset;
memcpy((void*)to,(void*)from,aCount*sizeof(PRUnichar));
}
//--------------------------------------------------------------------------------------
typedef void (*CopyChars)(char* aDest,PRInt32 anDestOffset,const char* aSource,PRUint32 anOffset,PRUint32 aCount);
CopyChars gCopyChars[2][2]={
{&CopyChars1To1,&CopyChars1To2},
{&CopyChars2To1,&CopyChars2To2}
};
//----------------------------------------------------------------------------------------
//
// This set of methods is used to search a buffer looking for a char.
//
/**
* This methods cans the given buffer for the given char
*
* @update gess 3/25/98
* @param aDest is the buffer to be searched
* @param aLength is the size (in char-units, not bytes) of the buffer
* @param anOffset is the start pos to begin searching
* @param aChar is the target character we're looking for
* @param aIgnorecase tells us whether to use a case sensitive search
* @return index of pos if found, else -1 (kNotFound)
*/
inline PRInt32 FindChar1(const char* aDest,PRUint32 aLength,PRUint32 anOffset,const PRUnichar aChar,PRBool aIgnoreCase) {
if(aIgnoreCase) {
char theChar=(char)nsCRT::ToUpper(aChar);
const char* ptr=aDest+(anOffset-1);
const char* last=aDest+aLength;
while(++ptr<last){
if(nsCRT::ToUpper(*ptr)==theChar)
return ptr-aDest;
}
}
else {
const char* ptr = aDest+anOffset;
char theChar=(char)aChar;
const char* result=(const char*)memchr(ptr, theChar,aLength-anOffset);
if(result) {
return result-aDest;
}
}
return kNotFound;
}
/**
* This methods cans the given buffer for the given char
*
* @update gess 3/25/98
* @param aDest is the buffer to be searched
* @param aLength is the size (in char-units, not bytes) of the buffer
* @param anOffset is the start pos to begin searching
* @param aChar is the target character we're looking for
* @param aIgnorecase tells us whether to use a case sensitive search
* @return index of pos if found, else -1 (kNotFound)
*/
inline PRInt32 FindChar2(const char* aDest,PRUint32 aLength,PRUint32 anOffset,const PRUnichar aChar,PRBool aIgnoreCase) {
const PRUnichar* root=(PRUnichar*)aDest;
const PRUnichar* ptr=root+(anOffset-1);
const PRUnichar* last=root+aLength;
if(aIgnoreCase) {
PRUnichar theChar=nsCRT::ToUpper(aChar);
while(++ptr<last){
if(nsCRT::ToUpper(*ptr)==theChar)
return ptr-root;
}
}
else {
while(++ptr<last){
if(*ptr==aChar)
return (ptr-root);
}
}
return kNotFound;
}
/**
* This methods cans the given buffer (in reverse) for the given char
*
* @update gess 3/25/98
* @param aDest is the buffer to be searched
* @param aLength is the size (in char-units, not bytes) of the buffer
* @param anOffset is the start pos to begin searching
* @param aChar is the target character we're looking for
* @param aIgnorecase tells us whether to use a case sensitive search
* @return index of pos if found, else -1 (kNotFound)
*/
inline PRInt32 RFindChar1(const char* aDest,PRUint32 aDestLength,PRUint32 anOffset,const PRUnichar aChar,PRBool aIgnoreCase) {
PRInt32 theIndex=0;
if(aIgnoreCase) {
PRUnichar theChar=nsCRT::ToUpper(aChar);
for(theIndex=(PRInt32)anOffset;theIndex>=0;theIndex--){
if(nsCRT::ToUpper(aDest[theIndex])==theChar)
return theIndex;
}
}
else {
for(theIndex=(PRInt32)anOffset;theIndex>=0;theIndex--){
if(aDest[theIndex]==aChar)
return theIndex;
}
}
return kNotFound;
}
/**
* This methods cans the given buffer for the given char
*
* @update gess 3/25/98
* @param aDest is the buffer to be searched
* @param aLength is the size (in char-units, not bytes) of the buffer
* @param anOffset is the start pos to begin searching
* @param aChar is the target character we're looking for
* @param aIgnorecase tells us whether to use a case sensitive search
* @return index of pos if found, else -1 (kNotFound)
*/
inline PRInt32 RFindChar2(const char* aDest,PRUint32 aDestLength,PRUint32 anOffset,const PRUnichar aChar,PRBool aIgnoreCase) {
PRInt32 theIndex=0;
PRUnichar* theBuf=(PRUnichar*)aDest;
if(aIgnoreCase) {
PRUnichar theChar=nsCRT::ToUpper(aChar);
for(theIndex=(PRInt32)anOffset;theIndex>=0;theIndex--){
if(nsCRT::ToUpper(theBuf[theIndex])==theChar)
return theIndex;
}
}
else {
for(theIndex=(PRInt32)anOffset;theIndex>=0;theIndex--){
if(theBuf[theIndex]==aChar)
return theIndex;
}
}
return kNotFound;
}
typedef PRInt32 (*FindChars)(const char* aDest,PRUint32 aDestLength,PRUint32 anOffset,const PRUnichar aChar,PRBool aIgnoreCase);
FindChars gFindChars[]={&FindChar1,&FindChar2};
FindChars gRFindChars[]={&RFindChar1,&RFindChar2};
//----------------------------------------------------------------------------------------
//
// This set of methods is used to compare one buffer onto another.
// The functions are differentiated by the size of source and dest character sizes.
// WARNING: Your destination buffer MUST be big enough to hold all the source bytes.
// We don't validate these ranges here (this should be done in higher level routines).
//
/**
* This method compares the data in one buffer with another
* @update gess 01/04/99
* @param aStr1 is the first buffer to be compared
* @param aStr2 is the 2nd buffer to be compared
* @param aCount is the number of chars to compare
* @param aIgnorecase tells us whether to use a case-sensitive comparison
* @return -1,0,1 depending on <,==,>
*/
PRInt32 Compare1To1(const char* aStr1,const char* aStr2,PRUint32 aCount,PRBool aIgnoreCase){
PRInt32 result=0;
if(aIgnoreCase)
result=nsCRT::strncasecmp(aStr1,aStr2,aCount);
else result=strncmp(aStr1,aStr2,aCount);
return result;
}
/**
* This method compares the data in one buffer with another
* @update gess 01/04/99
* @param aStr1 is the first buffer to be compared
* @param aStr2 is the 2nd buffer to be compared
* @param aCount is the number of chars to compare
* @param aIgnorecase tells us whether to use a case-sensitive comparison
* @return -1,0,1 depending on <,==,>
*/
PRInt32 Compare2To2(const char* aStr1,const char* aStr2,PRUint32 aCount,PRBool aIgnoreCase){
PRInt32 result=0;
if(aIgnoreCase)
result=nsCRT::strncasecmp((PRUnichar*)aStr1,(PRUnichar*)aStr2,aCount);
else result=nsCRT::strncmp((PRUnichar*)aStr1,(PRUnichar*)aStr2,aCount);
return result;
}
/**
* This method compares the data in one buffer with another
* @update gess 01/04/99
* @param aStr1 is the first buffer to be compared
* @param aStr2 is the 2nd buffer to be compared
* @param aCount is the number of chars to compare
* @param aIgnorecase tells us whether to use a case-sensitive comparison
* @return -1,0,1 depending on <,==,>
*/
PRInt32 Compare2To1(const char* aStr1,const char* aStr2,PRUint32 aCount,PRBool aIgnoreCase){
PRInt32 result;
if(aIgnoreCase)
result=nsCRT::strncasecmp((PRUnichar*)aStr1,aStr2,aCount);
else result=nsCRT::strncmp((PRUnichar*)aStr1,aStr2,aCount);
return result;
}
/**
* This method compares the data in one buffer with another
* @update gess 01/04/99
* @param aStr1 is the first buffer to be compared
* @param aStr2 is the 2nd buffer to be compared
* @param aCount is the number of chars to compare
* @param aIgnorecase tells us whether to use a case-sensitive comparison
* @return -1,0,1 depending on <,==,>
*/
PRInt32 Compare1To2(const char* aStr1,const char* aStr2,PRUint32 aCount,PRBool aIgnoreCase){
PRInt32 result;
if(aIgnoreCase)
result=nsCRT::strncasecmp((PRUnichar*)aStr2,aStr1,aCount)*-1;
else result=nsCRT::strncmp((PRUnichar*)aStr2,aStr1,aCount)*-1;
return result;
}
typedef PRInt32 (*CompareChars)(const char* aStr1,const char* aStr2,PRUint32 aCount,PRBool aIgnoreCase);
CompareChars gCompare[2][2]={
{&Compare1To1,&Compare1To2},
{&Compare2To1,&Compare2To2},
};
//----------------------------------------------------------------------------------------
//
// This set of methods is used to convert the case of strings...
//
/**
* This method performs a case conversion the data in the given buffer
*
* @update gess 01/04/99
* @param aString is the buffer to be case shifted
* @param aCount is the number of chars to compare
* @param aToUpper tells us whether to convert to upper or lower
* @return 0
*/
PRInt32 ConvertCase1(char* aString,PRUint32 aCount,PRBool aToUpper){
PRInt32 result=0;
typedef char chartype;
chartype* cp = (chartype*)aString;
chartype* end = cp + aCount-1;
while (cp <= end) {
chartype ch = *cp;
if(aToUpper) {
if ((ch >= 'a') && (ch <= 'z')) {
*cp = 'A' + (ch - 'a');
}
}
else {
if ((ch >= 'A') && (ch <= 'Z')) {
*cp = 'a' + (ch - 'A');
}
}
cp++;
}
return result;
}
//----------------------------------------------------------------------------------------
#ifndef RICKG_TESTBED
class HandleCaseConversionShutdown3 : public nsIShutdownListener {
public :
NS_IMETHOD OnShutdown(const nsCID& cid, nsISupports* service);
HandleCaseConversionShutdown3(void) { NS_INIT_REFCNT(); }
virtual ~HandleCaseConversionShutdown3(void) {}
NS_DECL_ISUPPORTS
};
static NS_DEFINE_CID(kUnicharUtilCID, NS_UNICHARUTIL_CID);
static NS_DEFINE_IID(kICaseConversionIID, NS_ICASECONVERSION_IID);
static NS_DEFINE_IID(kIShutdownListenerIID, NS_ISHUTDOWNLISTENER_IID);
static nsICaseConversion * gCaseConv = 0;
NS_IMPL_ISUPPORTS(HandleCaseConversionShutdown3, kIShutdownListenerIID);
nsresult HandleCaseConversionShutdown3::OnShutdown(const nsCID& cid, nsISupports* service) {
if (cid.Equals(kUnicharUtilCID)) {
NS_ASSERTION(service == gCaseConv, "wrong service!");
if(gCaseConv){
gCaseConv->Release();
gCaseConv = 0;
}
}
return NS_OK;
}
class CCaseConversionServiceInitializer {
public:
CCaseConversionServiceInitializer(){
mListener = new HandleCaseConversionShutdown3();
if(mListener){
mListener->AddRef();
nsServiceManager::GetService(kUnicharUtilCID, kICaseConversionIID,(nsISupports**) &gCaseConv, mListener);
}
}
protected:
HandleCaseConversionShutdown3* mListener;
};
#endif
//----------------------------------------------------------------------------------------
/**
* This method performs a case conversion the data in the given buffer
*
* @update gess 01/04/99
* @param aString is the buffer to be case shifted
* @param aCount is the number of chars to compare
* @param aToUpper tells us whether to convert to upper or lower
* @return 0
*/
PRInt32 ConvertCase2(char* aString,PRUint32 aCount,PRBool aToUpper){
PRUnichar* cp = (PRUnichar*)aString;
PRUnichar* end = cp + aCount-1;
PRInt32 result=0;
#ifndef RICKG_TESTBED
static CCaseConversionServiceInitializer gCaseConversionServiceInitializer;
// I18N code begin
if(gCaseConv) {
nsresult err=(aToUpper) ? gCaseConv->ToUpper(cp, cp, aCount) : gCaseConv->ToLower(cp, cp, aCount);
if(NS_SUCCEEDED(err))
return 0;
}
// I18N code end
#endif
while (cp <= end) {
PRUnichar ch = *cp;
if(aToUpper) {
if ((ch >= 'a') && (ch <= 'z')) {
*cp = 'A' + (ch - 'a');
}
}
else {
if ((ch >= 'A') && (ch <= 'Z')) {
*cp = 'a' + (ch - 'A');
}
}
cp++;
}
return result;
}
typedef PRInt32 (*CaseConverters)(char*,PRUint32,PRBool);
CaseConverters gCaseConverters[]={&ConvertCase1,&ConvertCase2};
//----------------------------------------------------------------------------------------
//
// This set of methods is used compress char sequences in a buffer...
//
/**
* This method compresses duplicate runs of a given char from the given buffer
*
* @update gess 01/04/99
* @param aString is the buffer to be manipulated
* @param aLength is the length of the buffer
* @param aSet tells us which chars to compress from given buffer
* @param aEliminateLeading tells us whether to strip chars from the start of the buffer
* @param aEliminateTrailing tells us whether to strip chars from the start of the buffer
* @return the new length of the given buffer
*/
PRInt32 CompressChars1(char* aString,PRUint32 aLength,const char* aSet){
typedef char chartype;
chartype* from = aString;
chartype* end = aString + aLength-1;
chartype* to = from;
//this code converts /n, /t, /r into normal space ' ';
//it also compresses runs of whitespace down to a single char...
if(aSet && aString && (0 < aLength)){
PRUint32 aSetLen=strlen(aSet);
while (from <= end) {
chartype theChar = *from++;
if(kNotFound!=FindChar1(aSet,aSetLen,0,theChar,PR_FALSE)){
*to++=theChar;
while (from <= end) {
theChar = *from++;
if(kNotFound==FindChar1(aSet,aSetLen,0,theChar,PR_FALSE)){
*to++ = theChar;
break;
}
}
} else {
*to++ = theChar;
}
}
*to = 0;
}
return to - (chartype*)aString;
}
/**
* This method compresses duplicate runs of a given char from the given buffer
*
* @update gess 01/04/99
* @param aString is the buffer to be manipulated
* @param aLength is the length of the buffer
* @param aSet tells us which chars to compress from given buffer
* @param aEliminateLeading tells us whether to strip chars from the start of the buffer
* @param aEliminateTrailing tells us whether to strip chars from the start of the buffer
* @return the new length of the given buffer
*/
PRInt32 CompressChars2(char* aString,PRUint32 aLength,const char* aSet){
typedef PRUnichar chartype;
chartype* from = (chartype*)aString;
chartype* end = from + aLength-1;
chartype* to = from;
//this code converts /n, /t, /r into normal space ' ';
//it also compresses runs of whitespace down to a single char...
if(aSet && aString && (0 < aLength)){
PRUint32 aSetLen=strlen(aSet);
while (from <= end) {
chartype theChar = *from++;
if(kNotFound!=FindChar1(aSet,aSetLen,0,theChar,PR_FALSE)){
*to++=theChar;
while (from <= end) {
theChar = *from++;
if(kNotFound==FindChar1(aSet,aSetLen,0,theChar,PR_FALSE)){
*to++ = theChar;
break;
}
}
} else {
*to++ = theChar;
}
}
*to = 0;
}
return to - (chartype*)aString;
}
typedef PRInt32 (*CompressChars)(char* aString,PRUint32 aCount,const char* aSet);
CompressChars gCompressChars[]={&CompressChars1,&CompressChars2};
/**
* This method strips chars in a given set from the given buffer
*
* @update gess 01/04/99
* @param aString is the buffer to be manipulated
* @param aLength is the length of the buffer
* @param aSet tells us which chars to compress from given buffer
* @param aEliminateLeading tells us whether to strip chars from the start of the buffer
* @param aEliminateTrailing tells us whether to strip chars from the start of the buffer
* @return the new length of the given buffer
*/
PRInt32 StripChars1(char* aString,PRUint32 aLength,const char* aSet){
typedef char chartype;
chartype* to = aString;
chartype* from = aString-1;
chartype* end = aString + aLength;
if(aSet && aString && (0 < aLength)){
PRUint32 aSetLen=strlen(aSet);
while (++from < end) {
chartype theChar = *from;
if(kNotFound==FindChar1(aSet,aSetLen,0,theChar,PR_FALSE)){
*to++ = theChar;
}
}
*to = 0;
}
return to - (chartype*)aString;
}
/**
* This method strips chars in a given set from the given buffer
*
* @update gess 01/04/99
* @param aString is the buffer to be manipulated
* @param aLength is the length of the buffer
* @param aSet tells us which chars to compress from given buffer
* @param aEliminateLeading tells us whether to strip chars from the start of the buffer
* @param aEliminateTrailing tells us whether to strip chars from the start of the buffer
* @return the new length of the given buffer
*/
PRInt32 StripChars2(char* aString,PRUint32 aLength,const char* aSet){
typedef PRUnichar chartype;
chartype* to = (chartype*)aString;
chartype* from = (chartype*)aString-1;
chartype* end = to + aLength;
if(aSet && aString && (0 < aLength)){
PRUint32 aSetLen=strlen(aSet);
while (++from < end) {
chartype theChar = *from;
if(kNotFound==FindChar1(aSet,aSetLen,0,theChar,PR_FALSE)){
*to++ = theChar;
}
}
*to = 0;
}
return to - (chartype*)aString;
}
typedef PRInt32 (*StripChars)(char* aString,PRUint32 aCount,const char* aSet);
StripChars gStripChars[]={&StripChars1,&StripChars2};
#endif

View File

@@ -1,120 +0,0 @@
#!nmake
#
# The contents of this file are subject to the Netscape Public License
# Version 1.0 (the "NPL"); you may not use this file except in
# compliance with the NPL. You may obtain a copy of the NPL at
# http://www.mozilla.org/NPL/
#
# Software distributed under the NPL is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
# for the specific language governing rights and limitations under the
# NPL.
#
# The Initial Developer of this code under the NPL is Netscape
# Communications Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All Rights
# Reserved.
DEPTH=..\..
MODULE = xpcom
################################################################################
## exports
EXPORTS = \
nsTextFormater.h \
nsAVLTree.h \
nsCppSharedAllocator.h \
nsCRT.h \
nsDeque.h \
nsEnumeratorUtils.h \
nsHashtable.h \
nsHashtableEnumerator.h \
nsIArena.h \
nsIByteBuffer.h \
nsIObserverList.h \
nsIProperties.h \
nsISimpleEnumerator.h \
nsISizeOfHandler.h \
nsIUnicharBuffer.h \
nsIVariant.h \
nsInt64.h \
nsQuickSort.h \
nsStr.h \
nsString.h \
nsString2.h \
nsSupportsPrimitives.h \
nsTime.h \
nsUnitConversion.h \
nsVector.h \
nsVoidArray.h \
nsXPIDLString.h \
plvector.h \
$(NULL)
XPIDL_MODULE = xpcom_ds
XPIDLSRCS = \
.\nsIAtom.idl \
.\nsICollection.idl \
.\nsIEnumerator.idl \
.\nsIObserver.idl \
.\nsIObserverService.idl \
.\nsISupportsArray.idl \
.\nsISupportsPrimitives.idl \
$(NULL)
################################################################################
## library
LIBRARY_NAME=xpcomds_s
LINCS = \
-I$(PUBLIC)\xpcom \
-I$(PUBLIC)\uconv \
-I$(PUBLIC)\unicharutil \
$(NULL)
LCFLAGS = -D_IMPL_NS_COM -D_IMPL_NS_BASE -DWIN32_LEAN_AND_MEAN
CPP_OBJS = \
.\$(OBJDIR)\nsTextFormater.obj \
.\$(OBJDIR)\nsArena.obj \
.\$(OBJDIR)\nsAtomTable.obj \
.\$(OBJDIR)\nsAVLTree.obj \
.\$(OBJDIR)\nsByteBuffer.obj \
.\$(OBJDIR)\nsCRT.obj \
.\$(OBJDIR)\nsConjoiningEnumerator.obj \
.\$(OBJDIR)\nsDeque.obj \
.\$(OBJDIR)\nsEmptyEnumerator.obj \
.\$(OBJDIR)\nsEnumeratorUtils.obj \
.\$(OBJDIR)\nsHashtable.obj \
.\$(OBJDIR)\nsHashtableEnumerator.obj \
.\$(OBJDIR)\nsObserver.obj \
.\$(OBJDIR)\nsObserverList.obj \
.\$(OBJDIR)\nsObserverService.obj \
.\$(OBJDIR)\nsProperties.obj \
.\$(OBJDIR)\nsQuickSort.obj \
.\$(OBJDIR)\nsSizeOfHandler.obj \
.\$(OBJDIR)\nsStr.obj \
.\$(OBJDIR)\nsString.obj \
.\$(OBJDIR)\nsString2.obj \
.\$(OBJDIR)\nsSupportsArray.obj \
.\$(OBJDIR)\nsSupportsArrayEnumerator.obj \
.\$(OBJDIR)\nsSupportsPrimitives.obj \
.\$(OBJDIR)\nsUnicharBuffer.obj \
.\$(OBJDIR)\nsVariant.obj \
.\$(OBJDIR)\nsVoidArray.obj \
.\$(OBJDIR)\nsXPIDLString.obj \
.\$(OBJDIR)\plvector.obj \
$(NULL)
include <$(DEPTH)\config\rules.mak>
libs:: $(LIBRARY)
$(MAKE_INSTALL) $(LIBRARY) $(DIST)\lib
clobber::
rm -f $(DIST)\lib\$(LIBRARY_NAME).lib

View File

@@ -1,617 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1999 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsAVLTree.h"
enum eLean {eLeft,eNeutral,eRight};
struct NS_COM nsAVLNode {
public:
nsAVLNode(void* aValue) {
mLeft=0;
mRight=0;
mSkew=eNeutral;
mValue=aValue;
}
nsAVLNode* mLeft;
nsAVLNode* mRight;
eLean mSkew;
void* mValue;
};
/************************************************************
Now begin the tree class. Don't forget that the comparison
between nodes must occur via the comparitor function,
otherwise all you're testing is pointer addresses.
************************************************************/
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
nsAVLTree::nsAVLTree(nsAVLNodeComparitor& aComparitor,
nsAVLNodeFunctor* aDeallocator) :
mComparitor(aComparitor), mDeallocator(aDeallocator) {
mRoot=0;
mCount=0;
}
static void
avlDeleteTree(nsAVLNode* aNode){
if (aNode) {
avlDeleteTree(aNode->mLeft);
avlDeleteTree(aNode->mRight);
delete aNode;
}
}
/**
*
* @update gess12/27/98
* @param
* @return
*/
nsAVLTree::~nsAVLTree(){
if (mDeallocator) {
ForEachDepthFirst(*mDeallocator);
}
avlDeleteTree(mRoot);
}
class CDoesntExist: public nsAVLNodeFunctor {
public:
CDoesntExist(const nsAVLTree& anotherTree) : mOtherTree(anotherTree) {
}
virtual void* operator()(void* anItem) {
void* result=mOtherTree.FindItem(anItem);
if(result)
return nsnull;
return anItem;
}
protected:
const nsAVLTree& mOtherTree;
};
/**
* This method compares two trees (members by identity).
* @update gess12/27/98
* @param tree to compare against
* @return true if they are identical (contain same stuff).
*/
PRBool nsAVLTree::operator==(const nsAVLTree& aCopy) const{
CDoesntExist functor(aCopy);
void* theItem=FirstThat(functor);
PRBool result=PRBool(!theItem);
return result;
}
/**
*
* @update gess12/27/98
* @param
* @return
*/
static void
avlRotateRight(nsAVLNode*& aRootNode){
nsAVLNode* ptr2;
nsAVLNode* ptr3;
ptr2=aRootNode->mRight;
if(ptr2->mSkew==eRight) {
aRootNode->mRight=ptr2->mLeft;
ptr2->mLeft=aRootNode;
aRootNode->mSkew=eNeutral;
aRootNode=ptr2;
}
else {
ptr3=ptr2->mLeft;
ptr2->mLeft=ptr3->mRight;
ptr3->mRight=ptr2;
aRootNode->mRight=ptr3->mLeft;
ptr3->mLeft=aRootNode;
if(ptr3->mSkew==eLeft)
ptr2->mSkew=eRight;
else ptr2->mSkew=eNeutral;
if(ptr3->mSkew==eRight)
aRootNode->mSkew=eLeft;
else aRootNode->mSkew=eNeutral;
aRootNode=ptr3;
}
aRootNode->mSkew=eNeutral;
return;
}
/**
*
* @update gess12/27/98
* @param
* @return
*/
static void
avlRotateLeft(nsAVLNode*& aRootNode){
nsAVLNode* ptr2;
nsAVLNode* ptr3;
ptr2=aRootNode->mLeft;
if(ptr2->mSkew==eLeft) {
aRootNode->mLeft=ptr2->mRight;
ptr2->mRight=aRootNode;
aRootNode->mSkew=eNeutral;
aRootNode=ptr2;
}
else {
ptr3=ptr2->mRight;
ptr2->mRight=ptr3->mLeft;
ptr3->mLeft=ptr2;
aRootNode->mLeft=ptr3->mRight;
ptr3->mRight=aRootNode;
if(ptr3->mSkew==eRight)
ptr2->mSkew=eLeft;
else ptr2->mSkew=eNeutral;
if(ptr3->mSkew==eLeft)
aRootNode->mSkew=eRight;
else aRootNode->mSkew=eNeutral;
aRootNode=ptr3;
}
aRootNode->mSkew=eNeutral;
return;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static eAVLStatus
avlInsert(nsAVLNode*& aRootNode, nsAVLNode* aNewNode,
nsAVLNodeComparitor& aComparitor) {
eAVLStatus result=eAVL_unknown;
if(!aRootNode) {
aRootNode = aNewNode;
return eAVL_ok;
}
if(aNewNode==aRootNode->mValue) {
return eAVL_duplicate;
}
PRInt32 theCompareResult=aComparitor(aRootNode->mValue,aNewNode->mValue);
if(0 < theCompareResult) { //if(anItem<aRootNode->mValue)
result=avlInsert(aRootNode->mLeft,aNewNode,aComparitor);
if(eAVL_ok==result) {
switch(aRootNode->mSkew){
case eLeft:
avlRotateLeft(aRootNode);
result=eAVL_fail;
break;
case eRight:
aRootNode->mSkew=eNeutral;
result=eAVL_fail;
break;
case eNeutral:
aRootNode->mSkew=eLeft;
break;
} //switch
}//if
} //if
else {
result=avlInsert(aRootNode->mRight,aNewNode,aComparitor);
if(eAVL_ok==result) {
switch(aRootNode->mSkew){
case eLeft:
aRootNode->mSkew=eNeutral;
result=eAVL_fail;
break;
case eRight:
avlRotateRight(aRootNode);
result=eAVL_fail;
break;
case eNeutral:
aRootNode->mSkew=eRight;
break;
} //switch
}
} //if
return result;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static void
avlBalanceLeft(nsAVLNode*& aRootNode, PRBool& delOk){
nsAVLNode* ptr2;
nsAVLNode* ptr3;
eLean balnc2;
eLean balnc3;
switch(aRootNode->mSkew){
case eLeft:
ptr2=aRootNode->mLeft;
balnc2=ptr2->mSkew;
if(balnc2!=eRight) {
aRootNode->mLeft=ptr2->mRight;
ptr2->mRight=aRootNode;
if(balnc2==eNeutral){
aRootNode->mSkew=eLeft;
ptr2->mSkew=eRight;
delOk=PR_FALSE;
}
else{
aRootNode->mSkew=eNeutral;
ptr2->mSkew=eNeutral;
}
aRootNode=ptr2;
}
else{
ptr3=ptr2->mRight;
balnc3=ptr3->mSkew;
ptr2->mRight=ptr3->mLeft;
ptr3->mLeft=ptr2;
aRootNode->mLeft=ptr3->mRight;
ptr3->mRight=aRootNode;
if(balnc3==eRight) {
ptr2->mSkew=eLeft;
}
else {
ptr2->mSkew=eNeutral;
}
if(balnc3==eLeft) {
aRootNode->mSkew=eRight;
}
else {
aRootNode->mSkew=eNeutral;
}
aRootNode=ptr3;
ptr3->mSkew=eNeutral;
}
break;
case eRight:
aRootNode->mSkew=eNeutral;
break;
case eNeutral:
aRootNode->mSkew=eLeft;
delOk=PR_FALSE;
break;
}//switch
return;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static void
avlBalanceRight(nsAVLNode*& aRootNode, PRBool& delOk){
nsAVLNode* ptr2;
nsAVLNode* ptr3;
eLean balnc2;
eLean balnc3;
switch(aRootNode->mSkew){
case eLeft:
aRootNode->mSkew=eNeutral;
break;
case eRight:
ptr2=aRootNode->mRight;
balnc2=ptr2->mSkew;
if(balnc2!=eLeft) {
aRootNode->mRight=ptr2->mLeft;
ptr2->mLeft=aRootNode;
if(balnc2==eNeutral){
aRootNode->mSkew=eRight;
ptr2->mSkew=eLeft;
delOk=PR_FALSE;
}
else{
aRootNode->mSkew=eNeutral;
ptr2->mSkew=eNeutral;
}
aRootNode=ptr2;
}
else{
ptr3=ptr2->mLeft;
balnc3=ptr3->mSkew;
ptr2->mLeft=ptr3->mRight;
ptr3->mRight=ptr2;
aRootNode->mRight=ptr3->mLeft;
ptr3->mLeft=aRootNode;
if(balnc3==eLeft) {
ptr2->mSkew=eRight;
}
else {
ptr2->mSkew=eNeutral;
}
if(balnc3==eRight) {
aRootNode->mSkew=eLeft;
}
else {
aRootNode->mSkew=eNeutral;
}
aRootNode=ptr3;
ptr3->mSkew=eNeutral;
}
break;
case eNeutral:
aRootNode->mSkew=eRight;
delOk=PR_FALSE;
break;
}//switch
return;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static eAVLStatus
avlRemoveChildren(nsAVLNode*& aRootNode,nsAVLNode*& anotherNode, PRBool& delOk){
eAVLStatus result=eAVL_ok;
if(!anotherNode->mRight){
aRootNode->mValue=anotherNode->mValue; //swap
anotherNode=anotherNode->mLeft;
delOk=PR_TRUE;
}
else{
avlRemoveChildren(aRootNode,anotherNode->mRight,delOk);
if(delOk)
avlBalanceLeft(anotherNode,delOk);
}
return result;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
static eAVLStatus
avlRemove(nsAVLNode*& aRootNode, void* anItem, PRBool& delOk,
nsAVLNodeComparitor& aComparitor){
eAVLStatus result=eAVL_ok;
if(!aRootNode)
delOk=PR_FALSE;
else {
PRInt32 cmp=aComparitor(anItem,aRootNode->mValue);
if(cmp<0){
avlRemove(aRootNode->mLeft,anItem,delOk,aComparitor);
if(delOk)
avlBalanceRight(aRootNode,delOk);
}
else if(cmp>0){
avlRemove(aRootNode->mRight,anItem,delOk,aComparitor);
if(delOk)
avlBalanceLeft(aRootNode,delOk);
}
else{ //they match...
nsAVLNode* temp=aRootNode;
if(!aRootNode->mRight) {
aRootNode=aRootNode->mLeft;
delOk=PR_TRUE;
delete temp;
}
else if(!aRootNode->mLeft) {
aRootNode=aRootNode->mRight;
delOk=PR_TRUE;
delete temp;
}
else {
avlRemoveChildren(aRootNode,aRootNode->mLeft,delOk);
if(delOk)
avlBalanceRight(aRootNode,delOk);
}
}
}
return result;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
eAVLStatus
nsAVLTree::AddItem(void* anItem){
eAVLStatus result=eAVL_ok;
nsAVLNode* theNewNode=new nsAVLNode(anItem);
result=avlInsert(mRoot,theNewNode,mComparitor);
if(eAVL_duplicate!=result)
mCount++;
else {
delete theNewNode;
}
return result;
}
/** ------------------------------------------------
*
*
* @update gess 4/22/98
* @param
* @return
*/ //----------------------------------------------
void* nsAVLTree::FindItem(void* aValue) const{
nsAVLNode* result=mRoot;
PRInt32 count=0;
while(result) {
count++;
PRInt32 cmp=mComparitor(aValue,result->mValue);
if(0==cmp) {
//we matched...
break;
}
else if(0>cmp){
//theNode was greater...
result=result->mLeft;
}
else {
//aValue is greater...
result=result->mRight;
}
}
if(result) {
return result->mValue;
}
return nsnull;
}
/**
*
* @update gess12/30/98
* @param
* @return
*/
eAVLStatus
nsAVLTree::RemoveItem(void* aValue){
PRBool delOk=PR_TRUE;
eAVLStatus result=avlRemove(mRoot,aValue,delOk,mComparitor);
if(eAVL_ok==result)
mCount--;
return result;
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
static void
avlForEachDepthFirst(nsAVLNode* aNode, nsAVLNodeFunctor& aFunctor){
if(aNode) {
avlForEachDepthFirst(aNode->mLeft,aFunctor);
avlForEachDepthFirst(aNode->mRight,aFunctor);
aFunctor(aNode->mValue);
}
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
void
nsAVLTree::ForEachDepthFirst(nsAVLNodeFunctor& aFunctor) const{
::avlForEachDepthFirst(mRoot,aFunctor);
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
static void
avlForEach(nsAVLNode* aNode, nsAVLNodeFunctor& aFunctor) {
if(aNode) {
avlForEach(aNode->mLeft,aFunctor);
aFunctor(aNode->mValue);
avlForEach(aNode->mRight,aFunctor);
}
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
void
nsAVLTree::ForEach(nsAVLNodeFunctor& aFunctor) const{
::avlForEach(mRoot,aFunctor);
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
static void*
avlFirstThat(nsAVLNode* aNode, nsAVLNodeFunctor& aFunctor) {
void* result=nsnull;
if(aNode) {
result = avlFirstThat(aNode->mLeft,aFunctor);
if (result) {
return result;
}
result = aFunctor(aNode->mValue);
if (result) {
return result;
}
result = avlFirstThat(aNode->mRight,aFunctor);
}
return result;
}
/**
*
* @update gess9/11/98
* @param
* @return
*/
void*
nsAVLTree::FirstThat(nsAVLNodeFunctor& aFunctor) const{
return ::avlFirstThat(mRoot,aFunctor);
}

View File

@@ -1,74 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1999 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsAVLTree_h___
#define nsAVLTree_h___
#include "nscore.h"
enum eAVLStatus {eAVL_unknown,eAVL_ok,eAVL_fail,eAVL_duplicate};
struct nsAVLNode;
/**
*
* @update gess12/26/98
* @param anObject1 is the first object to be compared
* @param anObject2 is the second object to be compared
* @return -1,0,1 if object1 is less, equal, greater than object2
*/
class NS_COM nsAVLNodeComparitor {
public:
virtual PRInt32 operator()(void* anItem1,void* anItem2)=0;
};
class NS_COM nsAVLNodeFunctor {
public:
virtual void* operator()(void* anItem)=0;
};
class NS_COM nsAVLTree {
public:
nsAVLTree(nsAVLNodeComparitor& aComparitor, nsAVLNodeFunctor* aDeallocator);
~nsAVLTree(void);
PRBool operator==(const nsAVLTree& aOther) const;
PRInt32 GetCount(void) const {return mCount;}
//main functions...
eAVLStatus AddItem(void* anItem);
eAVLStatus RemoveItem(void* anItem);
void* FindItem(void* anItem) const;
void ForEach(nsAVLNodeFunctor& aFunctor) const;
void ForEachDepthFirst(nsAVLNodeFunctor& aFunctor) const;
void* FirstThat(nsAVLNodeFunctor& aFunctor) const;
protected:
nsAVLNode* mRoot;
PRInt32 mCount;
nsAVLNodeComparitor& mComparitor;
nsAVLNodeFunctor* mDeallocator;
};
#endif /* nsAVLTree_h___ */

View File

@@ -1,97 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsArena.h"
#include "nsCRT.h"
ArenaImpl::ArenaImpl(void)
: mInitialized(PR_FALSE)
{
NS_INIT_REFCNT();
nsCRT::memset(&mPool, 0, sizeof(PLArenaPool));
}
NS_IMETHODIMP
ArenaImpl::Init(PRUint32 aBlockSize)
{
if (aBlockSize < NS_MIN_ARENA_BLOCK_SIZE) {
aBlockSize = NS_DEFAULT_ARENA_BLOCK_SIZE;
}
PL_INIT_ARENA_POOL(&mPool, "nsIArena", aBlockSize);
mBlockSize = aBlockSize;
mInitialized = PR_TRUE;
return NS_OK;
}
NS_IMPL_ISUPPORTS1(ArenaImpl, nsIArena)
ArenaImpl::~ArenaImpl()
{
if (mInitialized)
PL_FinishArenaPool(&mPool);
mInitialized = PR_FALSE;
}
NS_IMETHODIMP_(void*)
ArenaImpl::Alloc(PRUint32 size)
{
// Adjust size so that it's a multiple of sizeof(double)
PRUint32 align = size & (sizeof(double) - 1);
if (0 != align) {
size += sizeof(double) - align;
}
void* p;
PL_ARENA_ALLOCATE(p, &mPool, size);
return p;
}
NS_METHOD
ArenaImpl::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
{
if (aOuter)
return NS_ERROR_NO_AGGREGATION;
ArenaImpl* it = new ArenaImpl();
if (nsnull == it)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(it);
nsresult rv = it->QueryInterface(aIID, aResult);
NS_RELEASE(it);
return rv;
}
NS_COM nsresult NS_NewHeapArena(nsIArena** aInstancePtrResult,
PRUint32 aArenaBlockSize)
{
nsresult rv;
nsIArena* arena;
rv = ArenaImpl::Create(NULL, nsIArena::GetIID(), (void**)&arena);
if (NS_FAILED(rv)) return rv;
rv = arena->Init(aArenaBlockSize);
if (NS_FAILED(rv)) {
NS_RELEASE(arena);
return rv;
}
*aInstancePtrResult = arena;
return rv;
}

View File

@@ -1,50 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsArena_h__
#define nsArena_h__
#include "nsIArena.h"
#define PL_ARENA_CONST_ALIGN_MASK 7
#include "plarena.h"
// Simple arena implementation layered on plarena
class ArenaImpl : public nsIArena {
public:
ArenaImpl(void);
virtual ~ArenaImpl();
NS_DECL_ISUPPORTS
static NS_METHOD
Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
NS_IMETHOD Init(PRUint32 arenaBlockSize);
NS_IMETHOD_(void*) Alloc(PRUint32 size);
protected:
PLArenaPool mPool;
PRUint32 mBlockSize;
private:
PRBool mInitialized;
};
#endif // nsArena_h__

View File

@@ -1,172 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsAtomTable.h"
#include "nsString.h"
#include "nsCRT.h"
#include "plhash.h"
#include "nsISizeOfHandler.h"
/**
* The shared hash table for atom lookups.
*/
static nsrefcnt gAtoms;
static struct PLHashTable* gAtomHashTable;
#if defined(DEBUG) && (defined(XP_UNIX) || defined(XP_PC))
static PRIntn
DumpAtomLeaks(PLHashEntry *he, PRIntn index, void *arg)
{
AtomImpl* atom = (AtomImpl*) he->value;
if (atom) {
nsAutoString tmp;
atom->ToString(tmp);
fputs(tmp, stdout);
fputs("\n", stdout);
}
return HT_ENUMERATE_NEXT;
}
#endif
NS_COM void NS_PurgeAtomTable(void)
{
if (gAtomHashTable) {
#if defined(DEBUG) && (defined(XP_UNIX) || defined(XP_PC))
if (gAtoms) {
if (getenv("MOZ_DUMP_ATOM_LEAKS")) {
printf("*** leaking %d atoms\n", gAtoms);
PL_HashTableEnumerateEntries(gAtomHashTable, DumpAtomLeaks, 0);
}
}
#endif
PL_HashTableDestroy(gAtomHashTable);
gAtomHashTable = nsnull;
}
}
AtomImpl::AtomImpl()
{
NS_INIT_REFCNT();
// Every live atom holds a reference on the atom hashtable
gAtoms++;
}
AtomImpl::~AtomImpl()
{
NS_PRECONDITION(nsnull != gAtomHashTable, "null atom hashtable");
if (nsnull != gAtomHashTable) {
PL_HashTableRemove(gAtomHashTable, mString);
nsrefcnt cnt = --gAtoms;
if (0 == cnt) {
// When the last atom is destroyed, the atom arena is destroyed
NS_ASSERTION(0 == gAtomHashTable->nentries, "bad atom table");
PL_HashTableDestroy(gAtomHashTable);
gAtomHashTable = nsnull;
}
}
}
NS_IMPL_ISUPPORTS1(AtomImpl, nsIAtom)
void* AtomImpl::operator new(size_t size, const PRUnichar* us, PRInt32 uslen)
{
size = size + uslen * sizeof(PRUnichar);
AtomImpl* ii = (AtomImpl*) ::operator new(size);
nsCRT::memcpy(ii->mString, us, uslen * sizeof(PRUnichar));
ii->mString[uslen] = 0;
return ii;
}
NS_IMETHODIMP
AtomImpl::ToString(nsString& aBuf) /*FIX: const */
{
aBuf.SetLength(0);
aBuf.Append(mString, nsCRT::strlen(mString));
return NS_OK;
}
NS_IMETHODIMP
AtomImpl::GetUnicode(const PRUnichar **aResult) /*FIX: const */
{
NS_ENSURE_ARG_POINTER(aResult);
*aResult = mString;
return NS_OK;
}
NS_IMETHODIMP
AtomImpl::SizeOf(nsISizeOfHandler* aHandler, PRUint32* _retval) /*FIX: const */
{
NS_ENSURE_ARG_POINTER(_retval);
PRUint32 sum = sizeof(*this) + nsCRT::strlen(mString) * sizeof(PRUnichar);
*_retval = sum;
return NS_OK;
}
//----------------------------------------------------------------------
static PLHashNumber HashKey(const PRUnichar* k)
{
return (PLHashNumber) nsCRT::HashValue(k);
}
static PRIntn CompareKeys(const PRUnichar* k1, const PRUnichar* k2)
{
return nsCRT::strcmp(k1, k2) == 0;
}
NS_COM nsIAtom* NS_NewAtom(const char* isolatin1)
{
nsAutoString tmp(isolatin1);
return NS_NewAtom(tmp.GetUnicode());
}
NS_COM nsIAtom* NS_NewAtom(const nsString& aString)
{
return NS_NewAtom(aString.GetUnicode());
}
NS_COM nsIAtom* NS_NewAtom(const PRUnichar* us)
{
if (nsnull == gAtomHashTable) {
gAtomHashTable = PL_NewHashTable(8, (PLHashFunction) HashKey,
(PLHashComparator) CompareKeys,
(PLHashComparator) nsnull,
nsnull, nsnull);
}
PRUint32 uslen;
PRUint32 hashCode = nsCRT::HashValue(us, &uslen);
PLHashEntry** hep = PL_HashTableRawLookup(gAtomHashTable, hashCode, us);
PLHashEntry* he = *hep;
if (nsnull != he) {
nsIAtom* id = (nsIAtom*) he->value;
NS_ADDREF(id);
return id;
}
AtomImpl* id = new(us, uslen) AtomImpl();
PL_HashTableRawAdd(gAtomHashTable, hep, hashCode, id->mString, id);
NS_ADDREF(id);
return id;
}
NS_COM nsrefcnt NS_GetNumberOfAtoms(void)
{
if (nsnull != gAtomHashTable) {
NS_PRECONDITION(nsrefcnt(gAtomHashTable->nentries) == gAtoms, "bad atom table");
}
return gAtoms;
}

View File

@@ -1,43 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsAtomTable_h__
#define nsAtomTable_h__
#include "nsIAtom.h"
class AtomImpl : public nsIAtom {
public:
AtomImpl();
virtual ~AtomImpl();
NS_DECL_ISUPPORTS
NS_DECL_NSIATOM
void* operator new(size_t size, const PRUnichar* us, PRInt32 uslen);
void operator delete(void* ptr) {
::operator delete(ptr);
}
// Actually more; 0 terminated. This slot is reserved for the
// terminating zero.
PRUnichar mString[1];
};
#endif // nsAtomTable_h__

View File

@@ -1,723 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsBuffer.h"
#include "nsAutoLock.h"
#include "nsCRT.h"
#include "nsIInputStream.h"
#include "nsIServiceManager.h"
#include "nsIPageManager.h"
////////////////////////////////////////////////////////////////////////////////
nsBuffer::nsBuffer()
: mGrowBySize(0),
mMaxSize(0),
mAllocator(nsnull),
mObserver(nsnull),
mBufferSize(0),
mReadSegment(nsnull),
mReadCursor(0),
mWriteSegment(nsnull),
mWriteCursor(0),
mReaderClosed(PR_FALSE),
mCondition(NS_OK)
{
NS_INIT_REFCNT();
PR_INIT_CLIST(&mSegments);
}
NS_IMETHODIMP
nsBuffer::Init(PRUint32 growBySize, PRUint32 maxSize,
nsIBufferObserver* observer, nsIAllocator* allocator)
{
NS_ASSERTION(sizeof(PRCList) <= SEGMENT_OVERHEAD,
"need to change SEGMENT_OVERHEAD size");
NS_ASSERTION(growBySize > SEGMENT_OVERHEAD, "bad growBySize");
mGrowBySize = growBySize;
mMaxSize = maxSize;
mObserver = observer;
NS_IF_ADDREF(mObserver);
mAllocator = allocator;
NS_ADDREF(mAllocator);
return NS_OK;
}
nsBuffer::~nsBuffer()
{
// Free any allocated pages...
while (!PR_CLIST_IS_EMPTY(&mSegments)) {
PRCList* header = (PRCList*)mSegments.next;
char* segment = (char*)header;
PR_REMOVE_LINK(header); // unlink from mSegments
(void) mAllocator->Free(segment);
}
NS_IF_RELEASE(mObserver);
NS_IF_RELEASE(mAllocator);
}
NS_IMPL_ISUPPORTS1(nsBuffer, nsIBuffer)
NS_METHOD
nsBuffer::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
{
if (aOuter)
return NS_ERROR_NO_AGGREGATION;
nsBuffer* buf = new nsBuffer();
if (buf == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(buf);
nsresult rv = buf->QueryInterface(aIID, aResult);
NS_RELEASE(buf);
return rv;
}
////////////////////////////////////////////////////////////////////////////////
nsresult
nsBuffer::PushWriteSegment()
{
nsAutoCMonitor mon(this); // protect mSegments
if (mBufferSize >= mMaxSize) {
if (mObserver) {
nsresult rv = mObserver->OnFull(this);
if (NS_FAILED(rv)) return rv;
}
return NS_BASE_STREAM_WOULD_BLOCK;
}
// allocate a new segment to write into
PRCList* header;
header = (PRCList*)mAllocator->Alloc(mGrowBySize);
if (header == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
mBufferSize += mGrowBySize;
PR_INSERT_BEFORE(header, &mSegments); // insert at end
// initialize the write segment
mWriteSegment = header;
mWriteSegmentEnd = (char*)mWriteSegment + mGrowBySize;
mWriteCursor = (char*)mWriteSegment + sizeof(PRCList);
return NS_OK;
}
nsresult
nsBuffer::PopReadSegment()
{
nsresult rv;
nsAutoCMonitor mon(this); // protect mSegments
PRCList* header = (PRCList*)mSegments.next;
char* segment = (char*)header;
NS_ASSERTION(mReadSegment == header, "wrong segment");
// make sure that the writer isn't still in this segment (that the
// reader is removing)
NS_ASSERTION(!(segment <= mWriteCursor && mWriteCursor < segment + mGrowBySize),
"removing writer's segment");
PR_REMOVE_LINK(header); // unlink from mSegments
mBufferSize -= mGrowBySize;
rv = mAllocator->Free(segment);
if (NS_FAILED(rv)) return rv;
// initialize the read segment
if (PR_CLIST_IS_EMPTY(&mSegments)) {
mReadSegment = nsnull;
mReadSegmentEnd = nsnull;
mReadCursor = nsnull;
if (mObserver) {
rv = mObserver->OnEmpty(this);
if (NS_FAILED(rv)) return rv;
}
return NS_BASE_STREAM_WOULD_BLOCK;
}
else {
mReadSegment = mSegments.next;
mReadSegmentEnd = (char*)mReadSegment + mGrowBySize;
mReadCursor = (char*)mReadSegment + sizeof(PRCList);
}
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// nsIBuffer methods:
NS_IMETHODIMP
nsBuffer::ReadSegments(nsWriteSegmentFun writer, void* closure, PRUint32 count,
PRUint32 *readCount)
{
NS_ASSERTION(!mReaderClosed, "state change error");
nsAutoCMonitor mon(this);
nsresult rv = NS_OK;
PRUint32 readBufferLen;
const char* readBuffer;
*readCount = 0;
while (count > 0) {
rv = GetReadSegment(0, &readBuffer, &readBufferLen);
if (NS_FAILED(rv) || readBufferLen == 0) {
return *readCount == 0 ? rv : NS_OK;
}
readBufferLen = PR_MIN(readBufferLen, count);
while (readBufferLen > 0) {
PRUint32 writeCount;
rv = writer(closure, readBuffer, *readCount, readBufferLen, &writeCount);
NS_ASSERTION(rv != NS_BASE_STREAM_EOF, "Write should not return EOF");
if (rv == NS_BASE_STREAM_WOULD_BLOCK || NS_FAILED(rv) || writeCount == 0) {
// if we failed to write just report what we were
// able to read so far
return *readCount == 0 ? rv : NS_OK;
}
NS_ASSERTION(writeCount <= readBufferLen, "writer returned bad writeCount");
readBuffer += writeCount;
readBufferLen -= writeCount;
*readCount += writeCount;
count -= writeCount;
if (mReadCursor + writeCount == mReadSegmentEnd) {
rv = PopReadSegment();
if (NS_FAILED(rv)) {
return *readCount == 0 ? rv : NS_OK;
}
}
else {
mReadCursor += writeCount;
}
}
}
return NS_OK;
}
static NS_METHOD
nsWriteToRawBuffer(void* closure,
const char* fromRawSegment,
PRUint32 offset,
PRUint32 count,
PRUint32 *writeCount)
{
char* toBuf = (char*)closure;
nsCRT::memcpy(&toBuf[offset], fromRawSegment, count);
*writeCount = count;
return NS_OK;
}
NS_IMETHODIMP
nsBuffer::Read(char* toBuf, PRUint32 bufLen, PRUint32 *readCount)
{
return ReadSegments(nsWriteToRawBuffer, toBuf, bufLen, readCount);
}
NS_IMETHODIMP
nsBuffer::GetReadSegment(PRUint32 segmentLogicalOffset,
const char* *resultSegment,
PRUint32 *resultSegmentLen)
{
nsAutoCMonitor mon(this);
// set the read segment and cursor if not already set
if (mReadSegment == nsnull) {
if (PR_CLIST_IS_EMPTY(&mSegments)) {
*resultSegmentLen = 0;
*resultSegment = nsnull;
return mCondition;
}
else {
mReadSegment = mSegments.next;
mReadSegmentEnd = (char*)mReadSegment + mGrowBySize;
mReadCursor = (char*)mReadSegment + sizeof(PRCList);
}
}
// now search for the segment starting from segmentLogicalOffset and return it
PRCList* curSeg = mReadSegment;
char* curSegStart = mReadCursor;
char* curSegEnd = mReadSegmentEnd;
PRInt32 amt;
PRInt32 offset = (PRInt32)segmentLogicalOffset;
while (offset >= 0) {
// snapshot the write cursor into a local variable -- this allows
// a writer to freely change it while we're reading while avoiding
// using a lock
char* snapshotWriteCursor = mWriteCursor; // atomic
// next check if the write cursor is in our segment
if (curSegStart <= snapshotWriteCursor &&
snapshotWriteCursor < curSegEnd) {
// same segment -- read up to the snapshotWriteCursor
curSegEnd = snapshotWriteCursor;
amt = curSegEnd - curSegStart;
if (offset < amt) {
// segmentLogicalOffset is in this segment, so read up to its end
*resultSegmentLen = amt - offset;
*resultSegment = curSegStart + offset;
return NS_OK;
}
else {
// don't continue past the write segment
*resultSegmentLen = 0;
*resultSegment = nsnull;
return mCondition;
}
}
else {
amt = curSegEnd - curSegStart;
if (offset < amt) {
// segmentLogicalOffset is in this segment, so read up to its end
*resultSegmentLen = amt - offset;
*resultSegment = curSegStart + offset;
return NS_OK;
}
else {
curSeg = PR_NEXT_LINK(curSeg);
if (curSeg == mReadSegment) {
// been all the way around
*resultSegmentLen = 0;
*resultSegment = nsnull;
return mCondition;
}
curSegEnd = (char*)curSeg + mGrowBySize;
curSegStart = (char*)curSeg + sizeof(PRCList);
offset -= amt;
}
}
}
NS_NOTREACHED("nsBuffer::GetReadSegment failed");
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsBuffer::GetReadableAmount(PRUint32 *result)
{
NS_ASSERTION(!mReaderClosed, "state change error");
nsAutoCMonitor mon(this);
*result = 0;
// first set the read segment and cursor if not already set
if (mReadSegment == nsnull) {
if (PR_CLIST_IS_EMPTY(&mSegments)) {
return NS_OK;
}
else {
mReadSegment = mSegments.next;
mReadSegmentEnd = (char*)mReadSegment + mGrowBySize;
mReadCursor = (char*)mReadSegment + sizeof(PRCList);
}
}
// now search for the segment starting from segmentLogicalOffset and return it
PRCList* curSeg = mReadSegment;
char* curSegStart = mReadCursor;
char* curSegEnd = mReadSegmentEnd;
PRInt32 amt;
while (PR_TRUE) {
// snapshot the write cursor into a local variable -- this allows
// a writer to freely change it while we're reading while avoiding
// using a lock
char* snapshotWriteCursor = mWriteCursor; // atomic
// next check if the write cursor is in our segment
if (curSegStart <= snapshotWriteCursor &&
snapshotWriteCursor < curSegEnd) {
// same segment -- read up to the snapshotWriteCursor
curSegEnd = snapshotWriteCursor;
amt = curSegEnd - curSegStart;
*result += amt;
return NS_OK;
}
else {
amt = curSegEnd - curSegStart;
*result += amt;
curSeg = PR_NEXT_LINK(curSeg);
if (curSeg == mReadSegment) {
// been all the way around
return NS_OK;
}
curSegEnd = (char*)curSeg + mGrowBySize;
curSegStart = (char*)curSeg + sizeof(PRCList);
}
}
return NS_ERROR_FAILURE;
}
#define COMPARE(s1, s2, i) ignoreCase ? nsCRT::strncasecmp((const char *)s1, (const char *)s2, (PRUint32)i) : nsCRT::strncmp((const char *)s1, (const char *)s2, (PRUint32)i)
NS_IMETHODIMP
nsBuffer::Search(const char* string, PRBool ignoreCase,
PRBool *found, PRUint32 *offsetSearchedTo)
{
NS_ASSERTION(!mReaderClosed, "state change error");
nsresult rv;
const char* bufSeg1;
PRUint32 bufSegLen1;
PRUint32 segmentPos = 0;
PRUint32 strLen = nsCRT::strlen(string);
rv = GetReadSegment(segmentPos, &bufSeg1, &bufSegLen1);
if (NS_FAILED(rv) || bufSegLen1 == 0) {
*found = PR_FALSE;
*offsetSearchedTo = segmentPos;
return NS_OK;
}
while (PR_TRUE) {
PRUint32 i;
// check if the string is in the buffer segment
for (i = 0; i < bufSegLen1 - strLen + 1; i++) {
if (COMPARE(&bufSeg1[i], string, strLen) == 0) {
*found = PR_TRUE;
*offsetSearchedTo = segmentPos + i;
return NS_OK;
}
}
// get the next segment
const char* bufSeg2;
PRUint32 bufSegLen2;
segmentPos += bufSegLen1;
rv = GetReadSegment(segmentPos, &bufSeg2, &bufSegLen2);
if (NS_FAILED(rv) || bufSegLen2 == 0) {
*found = PR_FALSE;
if (mCondition != NS_OK) // XXX NS_FAILED?
*offsetSearchedTo = segmentPos - bufSegLen1;
else
*offsetSearchedTo = segmentPos - bufSegLen1 - strLen + 1;
return NS_OK;
}
// check if the string is straddling the next buffer segment
PRUint32 limit = PR_MIN(strLen, bufSegLen2 + 1);
for (i = 0; i < limit; i++) {
PRUint32 strPart1Len = strLen - i - 1;
PRUint32 strPart2Len = strLen - strPart1Len;
const char* strPart2 = &string[strLen - strPart2Len];
PRUint32 bufSeg1Offset = bufSegLen1 - strPart1Len;
if (COMPARE(&bufSeg1[bufSeg1Offset], string, strPart1Len) == 0 &&
COMPARE(bufSeg2, strPart2, strPart2Len) == 0) {
*found = PR_TRUE;
*offsetSearchedTo = segmentPos - strPart1Len;
return NS_OK;
}
}
// finally continue with the next buffer
bufSeg1 = bufSeg2;
bufSegLen1 = bufSegLen2;
}
NS_NOTREACHED("can't get here");
return NS_ERROR_FAILURE; // keep compiler happy
}
NS_IMETHODIMP
nsBuffer::ReaderClosed()
{
nsresult rv = NS_OK;
nsAutoCMonitor mon(this); // protect mSegments
// first prevent any more writing
mReaderClosed = PR_TRUE;
// then free any unread segments...
// first set the read segment and cursor if not already set
if (mReadSegment == nsnull) {
if (!PR_CLIST_IS_EMPTY(&mSegments)) {
mReadSegment = mSegments.next;
mReadSegmentEnd = (char*)mReadSegment + mGrowBySize;
mReadCursor = (char*)mReadSegment + sizeof(PRCList);
}
}
while (mReadSegment) {
// snapshot the write cursor into a local variable -- this allows
// a writer to freely change it while we're reading while avoiding
// using a lock
char* snapshotWriteCursor = mWriteCursor; // atomic
// next check if the write cursor is in our segment
if (mReadCursor <= snapshotWriteCursor &&
snapshotWriteCursor < mReadSegmentEnd) {
// same segment -- we've discarded all the unread segments we
// can, so just updatethe read cursor
mReadCursor = mWriteCursor;
break;
}
// else advance to the next segment, freeing this one
rv = PopReadSegment();
if (NS_FAILED(rv)) break;
}
#ifdef DEBUG
PRUint32 amt;
const char* buf;
rv = GetReadSegment(0, &buf, &amt);
NS_ASSERTION(rv == NS_BASE_STREAM_EOF ||
(NS_SUCCEEDED(rv) && amt == 0), "ReaderClosed failed");
#endif
return rv;
}
NS_IMETHODIMP
nsBuffer::GetCondition(nsresult *result)
{
*result = mCondition;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
NS_IMETHODIMP
nsBuffer::WriteSegments(nsReadSegmentFun reader, void* closure, PRUint32 count,
PRUint32 *writeCount)
{
nsresult rv = NS_OK;
nsAutoCMonitor mon(this);
*writeCount = 0;
if (mReaderClosed) {
rv = NS_BASE_STREAM_CLOSED;
goto done;
}
if (NS_FAILED(mCondition)) {
rv = mCondition;
goto done;
}
while (count > 0) {
PRUint32 writeBufLen;
char* writeBuf;
rv = GetWriteSegment(&writeBuf, &writeBufLen);
if (NS_FAILED(rv) || writeBufLen == 0) {
// if we failed to allocate a new segment, we're probably out
// of memory, but we don't care -- just report what we were
// able to write so far
rv = (*writeCount == 0) ? rv : NS_OK;
goto done;
}
writeBufLen = PR_MIN(writeBufLen, count);
while (writeBufLen > 0) {
PRUint32 readCount = 0;
rv = reader(closure, writeBuf, *writeCount, writeBufLen, &readCount);
if (rv == NS_BASE_STREAM_WOULD_BLOCK || readCount == 0) {
// if the place we're putting the data would block (probably ran
// out of room) just return what we were able to write so far
rv = (*writeCount == 0) ? rv : NS_OK;
goto done;
}
if (NS_FAILED(rv)) {
// save the failure condition so that we can get it again later
nsresult rv2 = SetCondition(rv);
NS_ASSERTION(NS_SUCCEEDED(rv2), "SetCondition failed");
// if we failed to read just report what we were
// able to write so far
rv = (*writeCount == 0) ? rv : NS_OK;
goto done;
}
NS_ASSERTION(readCount <= writeBufLen, "reader returned bad readCount");
writeBuf += readCount;
writeBufLen -= readCount;
*writeCount += readCount;
count -= readCount;
// set the write cursor after the data is valid
if (mWriteCursor + readCount == mWriteSegmentEnd) {
mWriteSegment = nsnull; // allocate a new segment next time around
mWriteSegmentEnd = nsnull;
mWriteCursor = nsnull;
}
else
mWriteCursor += readCount;
}
}
done:
if (mObserver && *writeCount) {
mObserver->OnWrite(this, *writeCount);
}
return rv;
}
static NS_METHOD
nsReadFromRawBuffer(void* closure,
char* toRawSegment,
PRUint32 offset,
PRUint32 count,
PRUint32 *readCount)
{
const char* fromBuf = (const char*)closure;
nsCRT::memcpy(toRawSegment, &fromBuf[offset], count);
*readCount = count;
return NS_OK;
}
NS_IMETHODIMP
nsBuffer::Write(const char* fromBuf, PRUint32 bufLen, PRUint32 *writeCount)
{
return WriteSegments(nsReadFromRawBuffer, (void*)fromBuf, bufLen, writeCount);
}
static NS_METHOD
nsReadFromInputStream(void* closure,
char* toRawSegment,
PRUint32 offset,
PRUint32 count,
PRUint32 *readCount)
{
nsIInputStream* fromStream = (nsIInputStream*)closure;
return fromStream->Read(toRawSegment, count, readCount);
}
NS_IMETHODIMP
nsBuffer::WriteFrom(nsIInputStream* fromStream, PRUint32 count, PRUint32 *writeCount)
{
return WriteSegments(nsReadFromInputStream, fromStream, count, writeCount);
}
NS_IMETHODIMP
nsBuffer::GetWriteSegment(char* *resultSegment,
PRUint32 *resultSegmentLen)
{
nsAutoCMonitor mon(this);
if (mReaderClosed)
return NS_BASE_STREAM_CLOSED;
nsresult rv;
*resultSegmentLen = 0;
*resultSegment = nsnull;
if (mWriteSegment == nsnull) {
rv = PushWriteSegment();
if (NS_FAILED(rv) || rv == NS_BASE_STREAM_WOULD_BLOCK) return rv;
NS_ASSERTION(mWriteSegment != nsnull, "failed to allocate segment");
}
*resultSegmentLen = mWriteSegmentEnd - mWriteCursor;
*resultSegment = mWriteCursor;
NS_ASSERTION(*resultSegmentLen > 0, "Failed to get write segment.");
return NS_OK;
}
NS_IMETHODIMP
nsBuffer::GetWritableAmount(PRUint32 *amount)
{
if (mReaderClosed)
return NS_BASE_STREAM_CLOSED;
nsresult rv;
PRUint32 readableAmount;
rv = GetReadableAmount(&readableAmount);
if (NS_FAILED(rv)) return rv;
*amount = mMaxSize - readableAmount;
return NS_OK;
}
NS_IMETHODIMP
nsBuffer::GetReaderClosed(PRBool *result)
{
*result = mReaderClosed;
return NS_OK;
}
NS_IMETHODIMP
nsBuffer::SetCondition(nsresult condition)
{
nsAutoCMonitor mon(this);
if (mReaderClosed)
return NS_BASE_STREAM_CLOSED;
mCondition = condition;
mWriteSegment = nsnull; // allows reader to free last segment w/o asserting
mWriteSegmentEnd = nsnull;
// don't reset mWriteCursor here -- we need it for the EOF point in the buffer
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
static NS_DEFINE_CID(kAllocatorCID, NS_ALLOCATOR_CID);
NS_COM nsresult
NS_NewBuffer(nsIBuffer* *result,
PRUint32 growBySize, PRUint32 maxSize,
nsIBufferObserver* observer)
{
nsresult rv;
NS_WITH_SERVICE(nsIAllocator, alloc, kAllocatorCID, &rv);
if (NS_FAILED(rv)) return rv;
nsBuffer* buf;
rv = nsBuffer::Create(NULL, nsIBuffer::GetIID(), (void**)&buf);
if (NS_FAILED(rv)) return rv;
rv = buf->Init(growBySize, maxSize, observer, alloc);
if (NS_FAILED(rv)) {
NS_RELEASE(buf);
return rv;
}
*result = buf;
return NS_OK;
}
static NS_DEFINE_CID(kPageManagerCID, NS_PAGEMANAGER_CID);
NS_COM nsresult
NS_NewPageBuffer(nsIBuffer* *result,
PRUint32 growBySize, PRUint32 maxSize,
nsIBufferObserver* observer)
{
nsresult rv;
NS_WITH_SERVICE(nsIAllocator, alloc, kPageManagerCID, &rv);
if (NS_FAILED(rv)) return rv;
nsBuffer* buf;
rv = nsBuffer::Create(NULL, nsIBuffer::GetIID(), (void**)&buf);
if (NS_FAILED(rv)) return rv;
rv = buf->Init(growBySize, maxSize, observer, alloc);
if (NS_FAILED(rv)) {
NS_RELEASE(buf);
return rv;
}
*result = buf;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////

View File

@@ -1,87 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsBuffer_h___
#define nsBuffer_h___
#include "nsIBuffer.h"
#include "nscore.h"
#include "prclist.h"
#include "nsIAllocator.h"
class nsBuffer : public nsIBuffer {
public:
NS_DECL_ISUPPORTS
static NS_METHOD
Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
// nsIBuffer methods:
NS_IMETHOD Init(PRUint32 growBySize, PRUint32 maxSize,
nsIBufferObserver* observer, nsIAllocator* allocator);
NS_IMETHOD Read(char* toBuf, PRUint32 bufLen, PRUint32 *readCount);
NS_IMETHOD ReadSegments(nsWriteSegmentFun writer, void* closure, PRUint32 count,
PRUint32 *readCount);
NS_IMETHOD GetReadSegment(PRUint32 segmentLogicalOffset,
const char* *resultSegment,
PRUint32 *resultSegmentLen);
NS_IMETHOD GetReadableAmount(PRUint32 *amount);
NS_IMETHOD Search(const char* forString, PRBool ignoreCase,
PRBool *found, PRUint32 *offsetSearchedTo);
NS_IMETHOD ReaderClosed(void);
NS_IMETHOD GetCondition(nsresult *result);
NS_IMETHOD Write(const char* fromBuf, PRUint32 bufLen, PRUint32 *writeCount);
NS_IMETHOD WriteFrom(nsIInputStream* fromStream, PRUint32 count, PRUint32 *writeCount);
NS_IMETHOD WriteSegments(nsReadSegmentFun reader, void* closure, PRUint32 count,
PRUint32 *writeCount);
NS_IMETHOD GetWriteSegment(char* *resultSegment,
PRUint32 *resultSegmentLen);
NS_IMETHOD GetWritableAmount(PRUint32 *amount);
NS_IMETHOD GetReaderClosed(PRBool *result);
NS_IMETHOD SetCondition(nsresult condition);
// nsBuffer methods:
nsBuffer();
virtual ~nsBuffer();
nsresult PushWriteSegment();
nsresult PopReadSegment();
protected:
PRUint32 mGrowBySize;
PRUint32 mMaxSize;
nsIAllocator* mAllocator;
nsIBufferObserver* mObserver;
PRCList mSegments;
PRUint32 mBufferSize;
PRCList* mReadSegment;
char* mReadSegmentEnd;
char* mReadCursor;
PRCList* mWriteSegment;
char* mWriteSegmentEnd;
char* mWriteCursor;
PRBool mReaderClosed;
nsresult mCondition;
};
#endif // nsBuffer_h___

View File

@@ -1,40 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsBufferPoolService_h___
#define nsBufferPoolService_h___
#include "nsIBufferPoolService.h"
class nsBufferPoolService : public nsIBufferPoolService {
public:
NS_DECL_ISUPPORTS
// nsIBufferPoolService methods:
NS_IMETHOD NewBuffer(PRUint32 minSize, PRUint32 maxSize,
nsIByteBuffer* *result);
// nsBufferPoolService methods:
nsBufferPoolService();
virtual ~nsBufferPoolService();
protected:
};
#endif // nsBufferPoolService_h___

View File

@@ -1,151 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsByteBuffer.h"
#include "nsIInputStream.h"
#include "nsCRT.h"
#define MIN_BUFFER_SIZE 32
ByteBufferImpl::ByteBufferImpl(void)
: mBuffer(NULL), mSpace(0), mLength(0)
{
NS_INIT_REFCNT();
}
NS_IMETHODIMP
ByteBufferImpl::Init(PRUint32 aBufferSize)
{
if (aBufferSize < MIN_BUFFER_SIZE) {
aBufferSize = MIN_BUFFER_SIZE;
}
mSpace = aBufferSize;
mLength = 0;
mBuffer = new char[aBufferSize];
return mBuffer ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}
NS_IMPL_ISUPPORTS1(ByteBufferImpl,nsIByteBuffer)
ByteBufferImpl::~ByteBufferImpl()
{
if (nsnull != mBuffer) {
delete[] mBuffer;
mBuffer = nsnull;
}
mLength = 0;
}
NS_METHOD
ByteBufferImpl::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
{
if (aOuter)
return NS_ERROR_NO_AGGREGATION;
ByteBufferImpl* it = new ByteBufferImpl();
if (nsnull == it)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(it);
nsresult rv = it->QueryInterface(aIID, (void**)aResult);
NS_RELEASE(it);
return rv;
}
NS_IMETHODIMP_(PRUint32)
ByteBufferImpl::GetLength(void) const
{
return mLength;
}
NS_IMETHODIMP_(PRUint32)
ByteBufferImpl::GetBufferSize(void) const
{
return mSpace;
}
NS_IMETHODIMP_(char*)
ByteBufferImpl::GetBuffer(void) const
{
return mBuffer;
}
NS_IMETHODIMP_(PRBool)
ByteBufferImpl::Grow(PRUint32 aNewSize)
{
if (aNewSize < MIN_BUFFER_SIZE) {
aNewSize = MIN_BUFFER_SIZE;
}
char* newbuf = new char[aNewSize];
if (nsnull != newbuf) {
if (0 != mLength) {
nsCRT::memcpy(newbuf, mBuffer, mLength);
}
delete[] mBuffer;
mBuffer = newbuf;
return PR_TRUE;
}
return PR_FALSE;
}
NS_IMETHODIMP_(PRInt32)
ByteBufferImpl::Fill(nsresult* aErrorCode, nsIInputStream* aStream,
PRUint32 aKeep)
{
NS_PRECONDITION(nsnull != aStream, "null stream");
NS_PRECONDITION(aKeep <= mLength, "illegal keep count");
if ((nsnull == aStream) || (PRUint32(aKeep) > PRUint32(mLength))) {
// whoops
*aErrorCode = NS_BASE_STREAM_ILLEGAL_ARGS;
return -1;
}
if (0 != aKeep) {
// Slide over kept data
nsCRT::memmove(mBuffer, mBuffer + (mLength - aKeep), aKeep);
}
// Read in some new data
mLength = aKeep;
PRUint32 nb;
*aErrorCode = aStream->Read(mBuffer + aKeep, mSpace - aKeep, &nb);
if (NS_SUCCEEDED(*aErrorCode)) {
mLength += nb;
}
else
nb = 0;
return nb;
}
NS_COM nsresult NS_NewByteBuffer(nsIByteBuffer** aInstancePtrResult,
nsISupports* aOuter,
PRUint32 aBufferSize)
{
nsresult rv;
nsIByteBuffer* buf;
rv = ByteBufferImpl::Create(aOuter, nsIByteBuffer::GetIID(), (void**)&buf);
if (NS_FAILED(rv)) return rv;
rv = buf->Init(aBufferSize);
if (NS_FAILED(rv)) {
NS_RELEASE(buf);
return rv;
}
*aInstancePtrResult = buf;
return rv;
}

View File

@@ -1,47 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsByteBuffer_h__
#define nsByteBuffer_h__
#include "nsIByteBuffer.h"
class ByteBufferImpl : public nsIByteBuffer {
public:
ByteBufferImpl(void);
virtual ~ByteBufferImpl();
NS_DECL_ISUPPORTS
static NS_METHOD
Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
NS_IMETHOD Init(PRUint32 aBufferSize);
NS_IMETHOD_(PRUint32) GetLength(void) const;
NS_IMETHOD_(PRUint32) GetBufferSize(void) const;
NS_IMETHOD_(char*) GetBuffer() const;
NS_IMETHOD_(PRBool) Grow(PRUint32 aNewSize);
NS_IMETHOD_(PRInt32) Fill(nsresult* aErrorCode, nsIInputStream* aStream,
PRUint32 aKeep);
char* mBuffer;
PRUint32 mSpace;
PRUint32 mLength;
};
#endif // nsByteBuffer_h__

View File

@@ -1,555 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/**
* MODULE NOTES:
* @update gess7/30/98
*
* Much as I hate to do it, we were using string compares wrong.
* Often, programmers call functions like strcmp(s1,s2), and pass
* one or more null strings. Rather than blow up on these, I've
* added quick checks to ensure that cases like this don't cause
* us to fail.
*
* In general, if you pass a null into any of these string compare
* routines, we simply return 0.
*/
#include "nsCRT.h"
#include "nsUnicharUtilCIID.h"
#include "nsIServiceManager.h"
#include "nsICaseConversion.h"
// XXX Bug: These tables don't lowercase the upper 128 characters properly
// This table maps uppercase characters to lower case characters;
// characters that are neither upper nor lower case are unaffected.
static const unsigned char kUpper2Lower[256] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
64,
// upper band mapped to lower [A-Z] => [a-z]
97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111,
112,113,114,115,116,117,118,119,120,121,122,
91, 92, 93, 94, 95,
96, 97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111,
112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,
224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255
};
static const unsigned char kLower2Upper[256] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
96,
// lower band mapped to upper [a-z] => [A-Z]
65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90,
123,124,125,126,127,
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,
224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255
};
// XXX bug: this doesn't map 0x80 to 0x9f properly
const PRUnichar kIsoLatin1ToUCS2[256] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
96, 97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111,
112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,
224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255
};
//----------------------------------------------------------------------
#define TOLOWER(_ucs2) \
(((_ucs2) < 128) ? PRUnichar(kUpper2Lower[_ucs2]) : _ToLower(_ucs2))
#define TOUPPER(_ucs2) \
(((_ucs2) < 128) ? PRUnichar(kLower2Upper[_ucs2]) : _ToUpper(_ucs2))
class HandleCaseConversionShutdown : public nsIShutdownListener {
public :
NS_IMETHOD OnShutdown(const nsCID& cid, nsISupports* service);
HandleCaseConversionShutdown(void) { NS_INIT_REFCNT(); }
virtual ~HandleCaseConversionShutdown(void) {}
NS_DECL_ISUPPORTS
};
static NS_DEFINE_CID(kUnicharUtilCID, NS_UNICHARUTIL_CID);
static nsICaseConversion * gCaseConv = NULL;
NS_IMPL_ISUPPORTS1(HandleCaseConversionShutdown, nsIShutdownListener)
nsresult
HandleCaseConversionShutdown::OnShutdown(const nsCID& cid,
nsISupports* aService)
{
if (cid.Equals(kUnicharUtilCID)) {
NS_ASSERTION(aService == gCaseConv, "wrong service!");
gCaseConv->Release();
gCaseConv = NULL;
}
return NS_OK;
}
static HandleCaseConversionShutdown* gListener = NULL;
static void StartUpCaseConversion()
{
nsresult err;
if ( NULL == gListener )
{
gListener = new HandleCaseConversionShutdown();
gListener->AddRef();
}
err = nsServiceManager::GetService(kUnicharUtilCID, NS_GET_IID(nsICaseConversion),
(nsISupports**) &gCaseConv, gListener);
}
static void CheckCaseConversion()
{
if(NULL == gCaseConv )
StartUpCaseConversion();
NS_ASSERTION( gCaseConv != NULL , "cannot obtain UnicharUtil");
}
static PRUnichar _ToLower(PRUnichar aChar)
{
PRUnichar oLower;
CheckCaseConversion();
nsresult err = gCaseConv->ToLower(aChar, &oLower);
NS_ASSERTION( NS_SUCCEEDED(err), "failed to communicate to UnicharUtil");
return ( NS_SUCCEEDED(err) ) ? oLower : aChar ;
}
static PRUnichar _ToUpper(PRUnichar aChar)
{
nsresult err;
PRUnichar oUpper;
CheckCaseConversion();
err = gCaseConv->ToUpper(aChar, &oUpper);
NS_ASSERTION( NS_SUCCEEDED(err), "failed to communicate to UnicharUtil");
return ( NS_SUCCEEDED(err) ) ? oUpper : aChar ;
}
//----------------------------------------------------------------------
PRUnichar nsCRT::ToUpper(PRUnichar aChar)
{
return TOUPPER(aChar);
}
PRUnichar nsCRT::ToLower(PRUnichar aChar)
{
return TOLOWER(aChar);
}
PRBool nsCRT::IsUpper(PRUnichar aChar)
{
return aChar != nsCRT::ToLower(aChar);
}
PRBool nsCRT::IsLower(PRUnichar aChar)
{
return aChar != nsCRT::ToUpper(aChar);
}
////////////////////////////////////////////////////////////////////////////////
// My lovely strtok routine
#define IS_DELIM(m, c) ((m)[(c) >> 3] & (1 << ((c) & 7)))
#define SET_DELIM(m, c) ((m)[(c) >> 3] |= (1 << ((c) & 7)))
#define DELIM_TABLE_SIZE 32
char* nsCRT::strtok(char* string, const char* delims, char* *newStr)
{
NS_ASSERTION(string, "Unlike regular strtok, the first argument cannot be null.");
char delimTable[DELIM_TABLE_SIZE];
PRUint32 i;
char* result;
char* str = string;
for (i = 0; i < DELIM_TABLE_SIZE; i++)
delimTable[i] = '\0';
for (i = 0; i < DELIM_TABLE_SIZE && delims[i]; i++) {
SET_DELIM(delimTable, delims[i]);
}
NS_ASSERTION(delims[i] == '\0', "too many delimiters");
// skip to beginning
while (*str && IS_DELIM(delimTable, *str)) {
str++;
}
result = str;
// fix up the end of the token
while (*str) {
if (IS_DELIM(delimTable, *str)) {
*str++ = '\0';
break;
}
str++;
}
*newStr = str;
return str == result ? NULL : result;
}
////////////////////////////////////////////////////////////////////////////////
PRUint32 nsCRT::strlen(const PRUnichar* s)
{
PRUint32 len = 0;
if(s) {
while (*s++ != 0) {
len++;
}
}
return len;
}
/**
* Compare unichar string ptrs, stopping at the 1st null
* NOTE: If both are null, we return 0.
* @update gess7/30/98
* @param s1 and s2 both point to unichar strings
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
*/
PRInt32 nsCRT::strcmp(const PRUnichar* s1, const PRUnichar* s2)
{
if(s1 && s2) {
for (;;) {
PRUnichar c1 = *s1++;
PRUnichar c2 = *s2++;
if (c1 != c2) {
if (c1 < c2) return -1;
return 1;
}
if ((0==c1) || (0==c2)) break;
}
}
return 0;
}
/**
* Compare unichar string ptrs, stopping at the 1st null or nth char.
* NOTE: If either is null, we return 0.
* @update gess7/30/98
* @param s1 and s2 both point to unichar strings
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
*/
PRInt32 nsCRT::strncmp(const PRUnichar* s1, const PRUnichar* s2, PRUint32 n)
{
if(s1 && s2) {
if(n != 0) {
do {
PRUnichar c1 = *s1++;
PRUnichar c2 = *s2++;
if (c1 != c2) {
if (c1 < c2) return -1;
return 1;
}
if ((0==c1) || (0==c2)) break;
} while (--n != 0);
}
}
return 0;
}
/**
* Compare unichar string ptrs without regard to case
* NOTE: If both are null, we return 0.
* @update gess7/30/98
* @param s1 and s2 both point to unichar strings
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
*/
PRInt32 nsCRT::strcasecmp(const PRUnichar* s1, const PRUnichar* s2)
{
if(s1 && s2) {
for (;;) {
PRUnichar c1 = *s1++;
PRUnichar c2 = *s2++;
if (c1 != c2) {
c1 = TOLOWER(c1);
c2 = TOLOWER(c2);
if (c1 != c2) {
if (c1 < c2) return -1;
return 1;
}
}
if ((0==c1) || (0==c2)) break;
}
}
return 0;
}
/**
* Compare unichar string ptrs, stopping at the 1st null or nth char;
* also ignoring the case of characters.
* NOTE: If both are null, we return 0.
* @update gess7/30/98
* @param s1 and s2 both point to unichar strings
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
*/
PRInt32 nsCRT::strncasecmp(const PRUnichar* s1, const PRUnichar* s2, PRUint32 n)
{
if(s1 && s2) {
if(n != 0){
do {
PRUnichar c1 = *s1++;
PRUnichar c2 = *s2++;
if (c1 != c2) {
c1 = TOLOWER(c1);
c2 = TOLOWER(c2);
if (c1 != c2) {
if (c1 < c2) return -1;
return 1;
}
}
if ((0==c1) || (0==c2)) break;
} while (--n != 0);
}
}
return 0;
}
/**
* Compare a unichar string ptr to cstring.
* NOTE: If both are null, we return 0.
* @update gess7/30/98
* @param s1 points to unichar string
* @param s2 points to cstring
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
*/
PRInt32 nsCRT::strcmp(const PRUnichar* s1, const char* s2)
{
if(s1 && s2) {
for (;;) {
PRUnichar c1 = *s1++;
PRUnichar c2 = kIsoLatin1ToUCS2[*(const unsigned char*)s2++];
if (c1 != c2) {
if (c1 < c2) return -1;
return 1;
}
if ((0==c1) || (0==c2)) break;
}
}
return 0;
}
/**
* Compare a unichar string ptr to cstring, up to N chars.
* NOTE: If both are null, we return 0.
* @update gess7/30/98
* @param s1 points to unichar string
* @param s2 points to cstring
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
*/
PRInt32 nsCRT::strncmp(const PRUnichar* s1, const char* s2, PRUint32 n)
{
if(s1 && s2) {
if(n != 0){
do {
PRUnichar c1 = *s1++;
PRUnichar c2 = kIsoLatin1ToUCS2[*(const unsigned char*)s2++];
if (c1 != c2) {
if (c1 < c2) return -1;
return 1;
}
if ((0==c1) || (0==c2)) break;
} while (--n != 0);
}
}
return 0;
}
/**
* Compare a unichar string ptr to cstring without regard to case
* NOTE: If both are null, we return 0.
* @update gess7/30/98
* @param s1 points to unichar string
* @param s2 points to cstring
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
*/
PRInt32 nsCRT::strcasecmp(const PRUnichar* s1, const char* s2)
{
if(s1 && s2) {
for (;;) {
PRUnichar c1 = *s1++;
PRUnichar c2 = kIsoLatin1ToUCS2[*(const unsigned char*)s2++];
if (c1 != c2) {
c1 = TOLOWER(c1);
c2 = TOLOWER(c2);
if (c1 != c2) {
if (c1 < c2) return -1;
return 1;
}
}
if ((0==c1) || (0==c2)) break;
}
}
return 0;
}
/**
* Caseless compare up to N chars between unichar string ptr to cstring.
* NOTE: If both are null, we return 0.
* @update gess7/30/98
* @param s1 points to unichar string
* @param s2 points to cstring
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
*/
PRInt32 nsCRT::strncasecmp(const PRUnichar* s1, const char* s2, PRUint32 n)
{
if(s1 && s2){
if(n != 0){
do {
PRUnichar c1 = *s1++;
PRUnichar c2 = kIsoLatin1ToUCS2[*(const unsigned char*)s2++];
if (c1 != c2) {
c1 = TOLOWER(c1);
c2 = TOLOWER(c2);
if (c1 != c2) {
if (c1 < c2) return -1;
return 1;
}
}
if (c1 == 0) break;
} while (--n != 0);
}
}
return 0;
}
PRUnichar* nsCRT::strdup(const PRUnichar* str)
{
PRUint32 len = nsCRT::strlen(str) + 1; // add one for null
nsCppSharedAllocator<PRUnichar> shared_allocator;
PRUnichar* rslt = shared_allocator.allocate(len);
// PRUnichar* rslt = new PRUnichar[len];
if (rslt == NULL) return NULL;
nsCRT::memcpy(rslt, str, len * sizeof(PRUnichar));
return rslt;
}
PRUint32 nsCRT::HashValue(const char* us)
{
PRUint32 rv = 0;
if(us) {
char ch;
while ((ch = *us++) != 0) {
// FYI: rv = rv*37 + ch
rv = ((rv << 5) + (rv << 2) + rv) + ch;
}
}
return rv;
}
PRUint32 nsCRT::HashValue(const char* us, PRUint32* uslenp)
{
PRUint32 rv = 0;
PRUint32 len = 0;
char ch;
while ((ch = *us++) != 0) {
// FYI: rv = rv*37 + ch
rv = ((rv << 5) + (rv << 2) + rv) + ch;
len++;
}
*uslenp = len;
return rv;
}
PRUint32 nsCRT::HashValue(const PRUnichar* us)
{
PRUint32 rv = 0;
if(us) {
PRUnichar ch;
while ((ch = *us++) != 0) {
// FYI: rv = rv*37 + ch
rv = ((rv << 5) + (rv << 2) + rv) + ch;
}
}
return rv;
}
PRUint32 nsCRT::HashValue(const PRUnichar* us, PRUint32* uslenp)
{
PRUint32 rv = 0;
PRUint32 len = 0;
PRUnichar ch;
while ((ch = *us++) != 0) {
// FYI: rv = rv*37 + ch
rv = ((rv << 5) + (rv << 2) + rv) + ch;
len++;
}
*uslenp = len;
return rv;
}
PRInt32 nsCRT::atoi( const PRUnichar *string )
{
return atoi(string);
}

View File

@@ -1,239 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsCRT_h___
#define nsCRT_h___
#include <stdlib.h>
#include <string.h>
#include "plstr.h"
#include "nscore.h"
#include "prtypes.h"
#include "nsCppSharedAllocator.h"
#define CR '\015'
#define LF '\012'
#define VTAB '\013'
#define FF '\014'
#define TAB '\011'
#define CRLF "\015\012" /* A CR LF equivalent string */
#ifdef XP_MAC
# define NS_LINEBREAK "\015"
# define NS_LINEBREAK_LEN 1
#else
# ifdef XP_PC
# define NS_LINEBREAK "\015\012"
# define NS_LINEBREAK_LEN 2
# else
# if defined(XP_UNIX) || defined(XP_BEOS)
# define NS_LINEBREAK "\012"
# define NS_LINEBREAK_LEN 1
# endif /* XP_UNIX */
# endif /* XP_PC */
#endif /* XP_MAC */
extern const PRUnichar kIsoLatin1ToUCS2[256];
// This macro can be used in a class declaration for classes that want
// to ensure that their instance memory is zeroed.
#define NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW \
void* operator new(size_t sz) { \
void* rv = ::operator new(sz); \
if (rv) { \
nsCRT::zero(rv, sz); \
} \
return rv; \
} \
void operator delete(void* ptr) { \
::operator delete(ptr); \
}
// This macro works with the next macro to declare a non-inlined
// version of the above.
#define NS_DECL_ZEROING_OPERATOR_NEW \
void* operator new(size_t sz); \
void operator delete(void* ptr);
#define NS_IMPL_ZEROING_OPERATOR_NEW(_class) \
void* _class::operator new(size_t sz) { \
void* rv = ::operator new(sz); \
if (rv) { \
nsCRT::zero(rv, sz); \
} \
return rv; \
} \
void _class::operator delete(void* ptr) { \
::operator delete(ptr); \
}
// Freeing helper
#define CRTFREEIF(x) if (x) { nsCRT::free(x); x = 0; }
/// This is a wrapper class around all the C runtime functions.
class NS_COM nsCRT {
public:
/** Copy bytes from aSrc to aDest.
@param aDest the destination address
@param aSrc the source address
@param aCount the number of bytes to copy
*/
static void memcpy(void* aDest, const void* aSrc, PRUint32 aCount) {
::memcpy(aDest, aSrc, (size_t)aCount);
}
static void memmove(void* aDest, const void* aSrc, PRUint32 aCount) {
::memmove(aDest, aSrc, (size_t)aCount);
}
static void memset(void* aDest, PRUint8 aByte, PRUint32 aCount) {
::memset(aDest, aByte, aCount);
}
static void zero(void* aDest, PRUint32 aCount) {
::memset(aDest, 0, (size_t)aCount);
}
/** Compute the string length of s
@param s the string in question
@return the length of s
*/
static PRUint32 strlen(const char* s) {
return PRUint32(::strlen(s));
}
/// Compare s1 and s2.
static PRInt32 strcmp(const char* s1, const char* s2) {
return PRUint32(PL_strcmp(s1, s2));
}
static PRInt32 strncmp(const char* s1, const char* s2,
PRUint32 aMaxLen) {
return PRInt32(PL_strncmp(s1, s2, aMaxLen));
}
/// Case-insensitive string comparison.
static PRInt32 strcasecmp(const char* s1, const char* s2) {
return PRInt32(PL_strcasecmp(s1, s2));
}
/// Case-insensitive string comparison with length
static PRInt32 strncasecmp(const char* s1, const char* s2, PRUint32 aMaxLen) {
return PRInt32(PL_strncasecmp(s1, s2, aMaxLen));
}
static PRInt32 strncmp(const char* s1, const char* s2, PRInt32 aMaxLen) {
// inline the first test (assumes strings are not null):
PRInt32 diff = ((const unsigned char*)s1)[0] - ((const unsigned char*)s2)[0];
if (diff != 0) return diff;
return PRInt32(PL_strncmp(s1,s2,aMaxLen));
}
static char* strdup(const char* str) {
return PL_strdup(str);
}
static void free(char* str) {
PL_strfree(str);
}
/**
How to use this fancy (thread-safe) version of strtok:
void main( void ) {
printf( "%s\n\nTokens:\n", string );
// Establish string and get the first token:
char* newStr;
token = nsCRT::strtok( string, seps, &newStr );
while( token != NULL ) {
// While there are tokens in "string"
printf( " %s\n", token );
// Get next token:
token = nsCRT::strtok( newStr, seps, &newStr );
}
}
* WARNING - STRTOK WHACKS str THE FIRST TIME IT IS CALLED *
* MAKE A COPY OF str IF YOU NEED TO USE IT AFTER strtok() *
*/
static char* strtok(char* str, const char* delims, char* *newStr);
/// Like strlen except for ucs2 strings
static PRUint32 strlen(const PRUnichar* s);
/// Like strcmp except for ucs2 strings
static PRInt32 strcmp(const PRUnichar* s1, const PRUnichar* s2);
/// Like strcmp except for ucs2 strings
static PRInt32 strncmp(const PRUnichar* s1, const PRUnichar* s2,
PRUint32 aMaxLen);
/// Like strcasecmp except for ucs2 strings
static PRInt32 strcasecmp(const PRUnichar* s1, const PRUnichar* s2);
/// Like strncasecmp except for ucs2 strings
static PRInt32 strncasecmp(const PRUnichar* s1, const PRUnichar* s2,
PRUint32 aMaxLen);
/// Like strcmp with a char* and a ucs2 string
static PRInt32 strcmp(const PRUnichar* s1, const char* s2);
/// Like strncmp with a char* and a ucs2 string
static PRInt32 strncmp(const PRUnichar* s1, const char* s2,
PRUint32 aMaxLen);
/// Like strcasecmp with a char* and a ucs2 string
static PRInt32 strcasecmp(const PRUnichar* s1, const char* s2);
/// Like strncasecmp with a char* and a ucs2 string
static PRInt32 strncasecmp(const PRUnichar* s1, const char* s2,
PRUint32 aMaxLen);
// Note: uses new[] to allocate memory, so you must use delete[] to
// free the memory
static PRUnichar* strdup(const PRUnichar* str);
static void free(PRUnichar* str) {
nsCppSharedAllocator<PRUnichar> shared_allocator;
shared_allocator.deallocate(str, 0 /*we never new or kept the size*/);
}
/// Compute a hashcode for a C string
static PRUint32 HashValue(const char* s1);
/// Same as above except that we return the length in s1len
static PRUint32 HashValue(const char* s1, PRUint32* s1len);
/// Compute a hashcode for a ucs2 string
static PRUint32 HashValue(const PRUnichar* s1);
/// Same as above except that we return the length in s1len
static PRUint32 HashValue(const PRUnichar* s1, PRUint32* s1len);
/// String to integer.
static PRInt32 atoi( const PRUnichar *string );
static PRUnichar ToUpper(PRUnichar aChar);
static PRUnichar ToLower(PRUnichar aChar);
static PRBool IsUpper(PRUnichar aChar);
static PRBool IsLower(PRUnichar aChar);
};
#endif /* nsCRT_h___ */

View File

@@ -1,365 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsIEnumerator.h"
////////////////////////////////////////////////////////////////////////////////
// Intersection Enumerators
////////////////////////////////////////////////////////////////////////////////
class nsConjoiningEnumerator : public nsIBidirectionalEnumerator
{
public:
NS_DECL_ISUPPORTS
// nsIEnumerator methods:
NS_DECL_NSIENUMERATOR
// nsIBidirectionalEnumerator methods:
NS_DECL_NSIBIDIRECTIONALENUMERATOR
// nsConjoiningEnumerator methods:
nsConjoiningEnumerator(nsIEnumerator* first, nsIEnumerator* second);
virtual ~nsConjoiningEnumerator(void);
protected:
nsIEnumerator* mFirst;
nsIEnumerator* mSecond;
nsIEnumerator* mCurrent;
};
nsConjoiningEnumerator::nsConjoiningEnumerator(nsIEnumerator* first, nsIEnumerator* second)
: mFirst(first), mSecond(second), mCurrent(first)
{
NS_ADDREF(mFirst);
NS_ADDREF(mSecond);
}
nsConjoiningEnumerator::~nsConjoiningEnumerator(void)
{
NS_RELEASE(mFirst);
NS_RELEASE(mSecond);
}
NS_IMPL_ISUPPORTS2(nsConjoiningEnumerator, nsIBidirectionalEnumerator, nsIEnumerator)
NS_IMETHODIMP
nsConjoiningEnumerator::First(void)
{
mCurrent = mFirst;
return mCurrent->First();
}
NS_IMETHODIMP
nsConjoiningEnumerator::Next(void)
{
nsresult rv = mCurrent->Next();
if (NS_FAILED(rv) && mCurrent == mFirst) {
mCurrent = mSecond;
rv = mCurrent->First();
}
return rv;
}
NS_IMETHODIMP
nsConjoiningEnumerator::CurrentItem(nsISupports **aItem)
{
return mCurrent->CurrentItem(aItem);
}
NS_IMETHODIMP
nsConjoiningEnumerator::IsDone(void)
{
return (mCurrent == mFirst && mCurrent->IsDone() == NS_OK)
|| (mCurrent == mSecond && mCurrent->IsDone() == NS_OK)
? NS_OK : NS_COMFALSE;
}
////////////////////////////////////////////////////////////////////////////////
NS_IMETHODIMP
nsConjoiningEnumerator::Last(void)
{
nsresult rv;
nsIBidirectionalEnumerator* be;
rv = mSecond->QueryInterface(nsIBidirectionalEnumerator::GetIID(), (void**)&be);
if (NS_FAILED(rv)) return rv;
mCurrent = mSecond;
rv = be->Last();
NS_RELEASE(be);
return rv;
}
NS_IMETHODIMP
nsConjoiningEnumerator::Prev(void)
{
nsresult rv;
nsIBidirectionalEnumerator* be;
rv = mCurrent->QueryInterface(nsIBidirectionalEnumerator::GetIID(), (void**)&be);
if (NS_FAILED(rv)) return rv;
rv = be->Prev();
NS_RELEASE(be);
if (NS_FAILED(rv) && mCurrent == mSecond) {
rv = mFirst->QueryInterface(nsIBidirectionalEnumerator::GetIID(), (void**)&be);
if (NS_FAILED(rv)) return rv;
mCurrent = mFirst;
rv = be->Last();
NS_RELEASE(be);
}
return rv;
}
////////////////////////////////////////////////////////////////////////////////
extern "C" NS_COM nsresult
NS_NewConjoiningEnumerator(nsIEnumerator* first, nsIEnumerator* second,
nsIBidirectionalEnumerator* *aInstancePtrResult)
{
if (aInstancePtrResult == 0)
return NS_ERROR_NULL_POINTER;
nsConjoiningEnumerator* e = new nsConjoiningEnumerator(first, second);
if (e == 0)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(e);
*aInstancePtrResult = e;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
static nsresult
nsEnumeratorContains(nsIEnumerator* e, nsISupports* item)
{
nsresult rv;
for (e->First(); e->IsDone() != NS_OK; e->Next()) {
nsISupports* other;
rv = e->CurrentItem(&other);
if (NS_FAILED(rv)) return rv;
if (item == other) {
NS_RELEASE(other);
return NS_OK; // true -- exists in enumerator
}
NS_RELEASE(other);
}
return NS_COMFALSE; // false -- doesn't exist
}
////////////////////////////////////////////////////////////////////////////////
// Intersection Enumerators
////////////////////////////////////////////////////////////////////////////////
class nsIntersectionEnumerator : public nsIEnumerator
{
public:
NS_DECL_ISUPPORTS
// nsIEnumerator methods:
NS_DECL_NSIENUMERATOR
// nsIntersectionEnumerator methods:
nsIntersectionEnumerator(nsIEnumerator* first, nsIEnumerator* second);
virtual ~nsIntersectionEnumerator(void);
protected:
nsIEnumerator* mFirst;
nsIEnumerator* mSecond;
};
nsIntersectionEnumerator::nsIntersectionEnumerator(nsIEnumerator* first, nsIEnumerator* second)
: mFirst(first), mSecond(second)
{
NS_ADDREF(mFirst);
NS_ADDREF(mSecond);
}
nsIntersectionEnumerator::~nsIntersectionEnumerator(void)
{
NS_RELEASE(mFirst);
NS_RELEASE(mSecond);
}
NS_IMPL_ISUPPORTS1(nsIntersectionEnumerator, nsIEnumerator)
NS_IMETHODIMP
nsIntersectionEnumerator::First(void)
{
nsresult rv = mFirst->First();
if (NS_FAILED(rv)) return rv;
return Next();
}
NS_IMETHODIMP
nsIntersectionEnumerator::Next(void)
{
nsresult rv;
// find the first item that exists in both
for (; mFirst->IsDone() != NS_OK; mFirst->Next()) {
nsISupports* item;
rv = mFirst->CurrentItem(&item);
if (NS_FAILED(rv)) return rv;
// see if it also exists in mSecond
rv = nsEnumeratorContains(mSecond, item);
if (NS_FAILED(rv)) return rv;
NS_RELEASE(item);
if (rv == NS_OK) {
// found in both, so return leaving it as the current item of mFirst
return NS_OK;
}
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsIntersectionEnumerator::CurrentItem(nsISupports **aItem)
{
return mFirst->CurrentItem(aItem);
}
NS_IMETHODIMP
nsIntersectionEnumerator::IsDone(void)
{
return mFirst->IsDone();
}
////////////////////////////////////////////////////////////////////////////////
extern "C" NS_COM nsresult
NS_NewIntersectionEnumerator(nsIEnumerator* first, nsIEnumerator* second,
nsIEnumerator* *aInstancePtrResult)
{
if (aInstancePtrResult == 0)
return NS_ERROR_NULL_POINTER;
nsIntersectionEnumerator* e = new nsIntersectionEnumerator(first, second);
if (e == 0)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(e);
*aInstancePtrResult = e;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// Union Enumerators
////////////////////////////////////////////////////////////////////////////////
class nsUnionEnumerator : public nsIEnumerator
{
public:
NS_DECL_ISUPPORTS
// nsIEnumerator methods:
NS_DECL_NSIENUMERATOR
// nsUnionEnumerator methods:
nsUnionEnumerator(nsIEnumerator* first, nsIEnumerator* second);
virtual ~nsUnionEnumerator(void);
protected:
nsIEnumerator* mFirst;
nsIEnumerator* mSecond;
};
nsUnionEnumerator::nsUnionEnumerator(nsIEnumerator* first, nsIEnumerator* second)
: mFirst(first), mSecond(second)
{
NS_ADDREF(mFirst);
NS_ADDREF(mSecond);
}
nsUnionEnumerator::~nsUnionEnumerator(void)
{
NS_RELEASE(mFirst);
NS_RELEASE(mSecond);
}
NS_IMPL_ISUPPORTS1(nsUnionEnumerator, nsIEnumerator)
NS_IMETHODIMP
nsUnionEnumerator::First(void)
{
nsresult rv = mFirst->First();
if (NS_FAILED(rv)) return rv;
return Next();
}
NS_IMETHODIMP
nsUnionEnumerator::Next(void)
{
nsresult rv;
// find the first item that exists in both
for (; mFirst->IsDone() != NS_OK; mFirst->Next()) {
nsISupports* item;
rv = mFirst->CurrentItem(&item);
if (NS_FAILED(rv)) return rv;
// see if it also exists in mSecond
rv = nsEnumeratorContains(mSecond, item);
if (NS_FAILED(rv)) return rv;
NS_RELEASE(item);
if (rv != NS_OK) {
// if it didn't exist in mSecond, return, making it the current item
return NS_OK;
}
// each time around, make sure that mSecond gets reset to the beginning
// so that when mFirst is done, we'll be ready to enumerate mSecond
rv = mSecond->First();
if (NS_FAILED(rv)) return rv;
}
return mSecond->Next();
}
NS_IMETHODIMP
nsUnionEnumerator::CurrentItem(nsISupports **aItem)
{
if (mFirst->IsDone() != NS_OK)
return mFirst->CurrentItem(aItem);
else
return mSecond->CurrentItem(aItem);
}
NS_IMETHODIMP
nsUnionEnumerator::IsDone(void)
{
return (mFirst->IsDone() == NS_OK && mSecond->IsDone() == NS_OK)
? NS_OK : NS_COMFALSE;
}
////////////////////////////////////////////////////////////////////////////////
extern "C" NS_COM nsresult
NS_NewUnionEnumerator(nsIEnumerator* first, nsIEnumerator* second,
nsIEnumerator* *aInstancePtrResult)
{
if (aInstancePtrResult == 0)
return NS_ERROR_NULL_POINTER;
nsUnionEnumerator* e = new nsUnionEnumerator(first, second);
if (e == 0)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(e);
*aInstancePtrResult = e;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////

View File

@@ -1,122 +0,0 @@
#ifndef nsCppSharedAllocator_h__
#define nsCppSharedAllocator_h__
#include "nsIAllocator.h" // for |nsAllocator|
#include "nscore.h" // for |NS_XXX_CAST|
#include <new.h> // to allow placement |new|
// under Metrowerks (Mac), we don't have autoconf yet
#ifdef __MWERKS__
#define HAVE_CPP_MEMBER_TEMPLATES
#define HAVE_CPP_NUMERIC_LIMITS
#endif
#ifdef HAVE_CPP_NUMERIC_LIMITS
#include <limits>
#else
#include <limits.h>
#endif
template <class T>
class nsCppSharedAllocator
/*
...allows Standard Library containers, et al, to use our global shared
(XP)COM-aware allocator.
*/
{
public:
typedef T value_type;
typedef size_t size_type;
typedef ptrdiff_t difference_type;
typedef T* pointer;
typedef const T* const_pointer;
typedef T& reference;
typedef const T& const_reference;
nsCppSharedAllocator() { }
#ifdef HAVE_CPP_MEMBER_TEMPLATES
template <class U>
nsCppSharedAllocator( const nsCppSharedAllocator<U>& ) { }
#endif
~nsCppSharedAllocator() { }
pointer
address( reference r ) const
{
return &r;
}
const_pointer
address( const_reference r ) const
{
return &r;
}
pointer
allocate( size_type n, const void* /*hint*/=0 )
{
return NS_REINTERPRET_CAST(pointer, nsAllocator::Alloc(NS_STATIC_CAST(PRUint32, n*sizeof(T))));
}
void
deallocate( pointer p, size_type /*n*/ )
{
nsAllocator::Free(p);
}
void
construct( pointer p, const T& val )
{
new (p) T(val);
}
void
destroy( pointer p )
{
p->~T();
}
size_type
max_size() const
{
#ifdef HAVE_CPP_NUMERIC_LIMITS
return numeric_limits<size_type>::max() / sizeof(T);
#else
return ULONG_MAX / sizeof(T);
#endif
}
#ifdef HAVE_CPP_MEMBER_TEMPLATES
template <class U>
struct rebind
{
typedef nsCppSharedAllocator<U> other;
};
#endif
};
template <class T>
PRBool
operator==( const nsCppSharedAllocator<T>&, const nsCppSharedAllocator<T>& )
{
return PR_TRUE;
}
template <class T>
PRBool
operator!=( const nsCppSharedAllocator<T>&, const nsCppSharedAllocator<T>& )
{
return PR_FALSE;
}
#endif /* !defined(nsCppSharedAllocator_h__) */

View File

@@ -1,594 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsDeque.h"
#include "nsCRT.h"
#include <stdio.h>
//#define _SELFTEST_DEQUE 1
#undef _SELFTEST_DEQUE
/**
* Standard constructor
* @update gess4/18/98
* @return new deque
*/
nsDeque::nsDeque(nsDequeFunctor* aDeallocator) {
mDeallocator=aDeallocator;
mOrigin=mSize=0;
mData=mBuffer; // don't allocate space until you must
mCapacity=sizeof(mBuffer)/sizeof(mBuffer[0]);
nsCRT::zero(mData,mCapacity*sizeof(mBuffer[0]));
}
/**
* Destructor
* @update gess4/18/98
*/
nsDeque::~nsDeque() {
#if 0
char buffer[30];
printf("Capacity: %i\n",mCapacity);
static int mCaps[15] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
switch(mCapacity) {
case 4: mCaps[0]++; break;
case 8: mCaps[1]++; break;
case 16: mCaps[2]++; break;
case 32: mCaps[3]++; break;
case 64: mCaps[4]++; break;
case 128: mCaps[5]++; break;
case 256: mCaps[6]++; break;
case 512: mCaps[7]++; break;
case 1024: mCaps[8]++; break;
case 2048: mCaps[9]++; break;
case 4096: mCaps[10]++; break;
default:
break;
}
#endif
Erase();
if(mData && (mData!=mBuffer))
delete [] mData;
mData=0;
if(mDeallocator) {
delete mDeallocator;
}
mDeallocator=0;
}
/**
*
* @update gess4/18/98
* @param
* @return
*/
void nsDeque::SetDeallocator(nsDequeFunctor* aDeallocator){
if(mDeallocator) {
delete mDeallocator;
}
mDeallocator=aDeallocator;
}
/**
* Remove all items from container without destroying them.
*
* @update gess4/18/98
* @param
* @return
*/
nsDeque& nsDeque::Empty() {
if((0<mCapacity) && (mData)) {
nsCRT::zero(mData,mCapacity*sizeof(mData));
}
mSize=0;
mOrigin=0;
return *this;
}
/**
* Remove and delete all items from container
*
* @update gess4/18/98
* @return this
*/
nsDeque& nsDeque::Erase() {
if(mDeallocator && mSize) {
ForEach(*mDeallocator);
}
return Empty();
}
/**
* This method adds an item to the end of the deque.
* This operation has the potential to cause the
* underlying buffer to resize.
*
* @update gess4/18/98
* @param anItem: new item to be added to deque
* @return nada
*/
nsDeque& nsDeque::GrowCapacity(void) {
PRInt32 theNewSize = mCapacity<<2;
void** temp=new void*[theNewSize];
//Here's the interesting part: You can't just move the elements
//directy (in situ) from the old buffer to the new one.
//Since capacity has changed, the old origin doesn't make
//sense anymore. It's better to resequence the elements now.
if(mData) {
int tempi=0;
int i=0;
int j=0;
for(i=mOrigin;i<mCapacity;i++) temp[tempi++]=mData[i]; //copy the leading elements...
for(j=0;j<mOrigin;j++) temp[tempi++]=mData[j]; //copy the trailing elements...
if(mData!=mBuffer)
delete [] mData;
}
mCapacity=theNewSize;
mOrigin=0; //now realign the origin...
mData=temp;
return *this;
}
/**
* This method adds an item to the end of the deque.
* This operation has the potential to cause the
* underlying buffer to resize.
*
* @update gess4/18/98
* @param anItem: new item to be added to deque
* @return nada
*/
nsDeque& nsDeque::Push(void* anItem) {
if(mSize==mCapacity) {
GrowCapacity();
}
int offset=mOrigin+mSize;
if(offset<mCapacity)
mData[offset]=anItem;
else mData[offset-mCapacity]=anItem;
mSize++;
return *this;
}
/**
* This method adds an item to the front of the deque.
* This operation has the potential to cause the
* underlying buffer to resize.
*
* @update gess4/18/98
* @param anItem: new item to be added to deque
* @return nada
*/
nsDeque& nsDeque::PushFront(void* anItem) {
if(mSize==mCapacity) {
GrowCapacity();
}
if(0==mOrigin){ //case1: [xxx..]
//mOrigin=mCapacity-1-mSize++;
mOrigin=mCapacity-1;
mData[mOrigin]=anItem;
}
else {// if(mCapacity==(mOrigin+mSize-1)){ //case2: [..xxx] and case3: [.xxx.]
mData[--mOrigin]=anItem;
}
mSize++;
return *this;
}
/**
* Remove and return the last item in the container.
*
* @update gess4/18/98
* @param none
* @return ptr to last item in container
*/
void* nsDeque::Pop(void) {
void* result=0;
if(mSize>0) {
int offset=mOrigin+mSize-1;
if(offset>=mCapacity)
offset-=mCapacity;
result=mData[offset];
mData[offset]=0;
mSize--;
if(0==mSize)
mOrigin=0;
}
return result;
}
/**
* This method gets called you want to remove and return
* the first member in the container.
*
* @update gess4/18/98
* @param nada
* @return last item in container
*/
void* nsDeque::PopFront() {
void* result=0;
if(mSize>0) {
NS_ASSERTION(mOrigin<mCapacity,"Error: Bad origin");
result=mData[mOrigin];
mData[mOrigin++]=0; //zero it out for debugging purposes.
mSize--;
if(mCapacity==mOrigin) //you popped off the end, so cycle back around...
mOrigin=0;
if(0==mSize)
mOrigin=0;
}
return result;
}
/**
* This method gets called you want to peek at the topmost
* member without removing it.
*
* @update gess4/18/98
* @param nada
* @return last item in container
*/
void* nsDeque::Peek() {
void* result=0;
if(mSize>0) {
result=mData[mOrigin];
}
return result;
}
/**
* Call this to retrieve the ith element from this container.
* Keep in mind that accessing the underlying elements is
* done in a relative fashion. Object 0 is not necessarily
* the first element (the first element is at mOrigin).
*
* @update gess4/18/98
* @param anIndex : 0 relative offset of item you want
* @return void* or null
*/
void* nsDeque::ObjectAt(PRInt32 anIndex) const {
void* result=0;
if((anIndex>=0) && (anIndex<mSize))
{
if(anIndex<(mCapacity-mOrigin)) {
result=mData[mOrigin+anIndex];
}
else {
result=mData[anIndex-(mCapacity-mOrigin)];
}
}
return result;
}
/**
* Create and return an iterator pointing to
* the beginning of the queue. Note that this
* takes the circular buffer semantics into account.
*
* @update gess4/18/98
* @return new deque iterator, init'ed to 1st item
*/
nsDequeIterator nsDeque::Begin(void) const{
return nsDequeIterator(*this,0);
}
/**
* Create and return an iterator pointing to
* the last of the queue. Note that this
* takes the circular buffer semantics into account.
*
* @update gess4/18/98
* @return new deque iterator, init'ed to last item
*/
nsDequeIterator nsDeque::End(void) const{
return nsDequeIterator(*this,mSize);
}
/**
* Call this method when you wanto to iterate all the
* members of the container, passing a functor along
* to call your code.
*
* @update gess4/20/98
* @param aFunctor object to call for each member
* @return *this
*/
void nsDeque::ForEach(nsDequeFunctor& aFunctor) const{
int i=0;
for(i=0;i<mSize;i++){
void* obj=ObjectAt(i);
obj=aFunctor(obj);
}
}
/**
* Call this method when you wanto to iterate all the
* members of the container, passing a functor along
* to call your code. Iteration continues until your
* functor returns a non-null.
*
* @update gess4/20/98
* @param aFunctor object to call for each member
* @return *this
*/
const void* nsDeque::FirstThat(nsDequeFunctor& aFunctor) const{
int i=0;
for(i=0;i<mSize;i++){
void* obj=ObjectAt(i);
obj=aFunctor(obj);
if(obj)
return obj;
}
return 0;
}
/******************************************************
* Here comes the nsDequeIterator class...
******************************************************/
/**
* DequeIterator is an object that knows how to iterate (forward and backward)
* a Deque. Normally, you don't need to do this, but there are some special
* cases where it is pretty handy, so here you go.
*
* This is a standard dequeiterator constructor
*
* @update gess4/18/98
* @param aQueue is the deque object to be iterated
* @param anIndex is the starting position for your iteration
*/
nsDequeIterator::nsDequeIterator(const nsDeque& aQueue,int anIndex): mIndex(anIndex), mDeque(aQueue) {
}
/**
* Copy construct a new iterator beginning with given
*
* @update gess4/20/98
* @param aCopy is another iterator to copy from
* @return
*/
nsDequeIterator::nsDequeIterator(const nsDequeIterator& aCopy) : mIndex(aCopy.mIndex), mDeque(aCopy.mDeque) {
}
/**
* Moves iterator to first element in deque
* @update gess4/18/98
* @return this
*/
nsDequeIterator& nsDequeIterator::First(void){
mIndex=0;
return *this;
}
/**
* Standard assignment operator for dequeiterator
*
* @update gess4/18/98
* @param aCopy is an iterator to be copied from
* @return *this
*/
nsDequeIterator& nsDequeIterator::operator=(const nsDequeIterator& aCopy) {
//queue's are already equal.
mIndex=aCopy.mIndex;
return *this;
}
/**
* preform ! operation against to iterators to test for equivalence
* (or lack thereof)!
*
* @update gess4/18/98
* @param anIter is the object to be compared to
* @return TRUE if NOT equal.
*/
PRBool nsDequeIterator::operator!=(nsDequeIterator& anIter) {
return PRBool(!this->operator==(anIter));
}
/**
* Compare 2 iterators for equivalence.
*
* @update gess4/18/98
* @param anIter is the other iterator to be compared to
* @return TRUE if EQUAL
*/
PRBool nsDequeIterator::operator<(nsDequeIterator& anIter) {
return PRBool(((mIndex<anIter.mIndex) && (&mDeque==&anIter.mDeque)));
}
/**
* Compare 2 iterators for equivalence.
*
* @update gess4/18/98
* @param anIter is the other iterator to be compared to
* @return TRUE if EQUAL
*/
PRBool nsDequeIterator::operator==(nsDequeIterator& anIter) {
return PRBool(((mIndex==anIter.mIndex) && (&mDeque==&anIter.mDeque)));
}
/**
* Compare 2 iterators for equivalence.
*
* @update gess4/18/98
* @param anIter is the other iterator to be compared to
* @return TRUE if EQUAL
*/
PRBool nsDequeIterator::operator>=(nsDequeIterator& anIter) {
return PRBool(((mIndex>=anIter.mIndex) && (&mDeque==&anIter.mDeque)));
}
/**
* Pre-increment operator
*
* @update gess4/18/98
* @return object at preincremented index
*/
void* nsDequeIterator::operator++() {
return mDeque.ObjectAt(++mIndex);
}
/**
* Post-increment operator
*
* @update gess4/18/98
* @param param is ignored
* @return object at post-incremented index
*/
void* nsDequeIterator::operator++(int) {
return mDeque.ObjectAt(mIndex++);
}
/**
* Pre-decrement operator
*
* @update gess4/18/98
* @return object at pre-decremented index
*/
void* nsDequeIterator::operator--() {
return mDeque.ObjectAt(--mIndex);
}
/**
* Post-decrement operator
*
* @update gess4/18/98
* @param param is ignored
* @return object at post-decremented index
*/
void* nsDequeIterator::operator--(int) {
return mDeque.ObjectAt(mIndex--);
}
/**
* Dereference operator
*
* @update gess4/18/98
* @return object at ith index
*/
void* nsDequeIterator::GetCurrent(void) {
return mDeque.ObjectAt(mIndex);
}
/**
* Call this method when you wanto to iterate all the
* members of the container, passing a functor along
* to call your code.
*
* @update gess4/20/98
* @param aFunctor object to call for each member
* @return *this
*/
void nsDequeIterator::ForEach(nsDequeFunctor& aFunctor) const{
mDeque.ForEach(aFunctor);
}
/**
* Call this method when you wanto to iterate all the
* members of the container, passing a functor along
* to call your code.
*
* @update gess4/20/98
* @param aFunctor object to call for each member
* @return *this
*/
const void* nsDequeIterator::FirstThat(nsDequeFunctor& aFunctor) const{
return mDeque.FirstThat(aFunctor);
}
#ifdef _SELFTEST_DEQUE
/**************************************************************
Now define the token deallocator class...
**************************************************************/
class _SelfTestDeallocator: public nsDequeFunctor{
public:
_SelfTestDeallocator::_SelfTestDeallocator() {
nsDeque::SelfTest();
}
virtual void* operator()(void* anObject) {
return 0;
}
};
static _SelfTestDeallocator gDeallocator;
#endif
/**
* conduct automated self test for this class
*
* @update gess4/18/98
* @param
* @return
*/
void nsDeque::SelfTest(void) {
#ifdef _SELFTEST_DEQUE
{
nsDeque theDeque(gDeallocator); //construct a simple one...
int ints[200];
int count=sizeof(ints)/sizeof(int);
int i=0;
for(i=0;i<count;i++){ //initialize'em
ints[i]=10*(1+i);
}
for(i=0;i<70;i++){
theDeque.Push(&ints[i]);
}
for(i=0;i<56;i++){
int* temp=(int*)theDeque.Pop();
}
for(i=0;i<55;i++){
theDeque.Push(&ints[i]);
}
for(i=0;i<35;i++){
int* temp=(int*)theDeque.Pop();
}
for(i=0;i<35;i++){
theDeque.Push(&ints[i]);
}
for(i=0;i<38;i++){
int* temp=(int*)theDeque.Pop();
}
}
int x;
x=10;
#endif
}

View File

@@ -1,410 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/**
* MODULE NOTES:
* @update gess 4/15/98 (tax day)
*
* The Deque is a very small, very efficient container object
* than can hold elements of type void*, offering the following features:
* It's interface supports pushing and poping of children.
* It can iterate (via an interator class) it's children.
* When full, it can efficently resize dynamically.
*
*
* NOTE: The only bit of trickery here is that this deque is
* built upon a ring-buffer. Like all ring buffers, the first
* element may not be at index[0]. The mOrigin member determines
* where the first child is. This point is quietly hidden from
* customers of this class.
*
*/
#ifndef _NSDEQUE
#define _NSDEQUE
#include "nscore.h"
/**
* The nsDequefunctor class is used when you want to create
* callbacks between the deque and your generic code.
* Use these objects in a call to ForEach();
*
* @update gess4/20/98
*/
class NS_COM nsDequeFunctor{
public:
virtual void* operator()(void* anObject)=0;
};
/******************************************************
* Here comes the nsDeque class itself...
******************************************************/
/**
* The deque (double-ended queue) class is a common container type,
* whose behavior mimics a line in your favorite checkout stand.
* Classic CS describes the common behavior of a queue as FIFO.
* A Deque allows items to be added and removed from either end of
* the queue.
*
* @update gess4/20/98
*/
class NS_COM nsDeque {
friend class nsDequeIterator;
public:
nsDeque(nsDequeFunctor* aDeallocator);
~nsDeque();
/**
* Returns the number of elements currently stored in
* this deque.
*
* @update gess4/18/98
* @param
* @return int contains element count
*/
inline PRInt32 GetSize() const { return mSize;}
/**
* Pushes new member onto the end of the deque
*
* @update gess4/18/98
* @param ptr to object to store
* @return *this
*/
nsDeque& Push(void* anItem);
/**
* Pushes new member onto the front of the deque
*
* @update gess4/18/98
* @param ptr to object to store
* @return *this
*/
nsDeque& PushFront(void* anItem);
/**
* Remove and return the first item in the container.
*
* @update gess4/18/98
* @param none
* @return ptr to first item in container
*/
void* Pop(void);
/**
* Remove and return the first item in the container.
*
* @update gess4/18/98
* @param none
* @return ptr to first item in container
*/
void* PopFront(void);
/**
* Return topmost item without removing it.
*
* @update gess4/18/98
* @param none
* @return ptr to first item in container
*/
void* Peek(void);
/**
* method used to retrieve ptr to
* ith member in container. DOesn't remove
* that item.
*
* @update gess4/18/98
* @param index of desired item
* @return ptr to ith element in list
*/
void* ObjectAt(int anIndex) const;
/**
* Remove all items from container without destroying them
*
* @update gess4/18/98
* @param
* @return
*/
nsDeque& Empty();
/**
* Remove and delete all items from container
*
* @update gess4/18/98
* @param
* @return
*/
nsDeque& Erase();
/**
* Creates a new iterator, init'ed to start of container
*
* @update gess4/18/98
* @return new dequeIterator
*/
nsDequeIterator Begin() const;
/**
* Creates a new iterator, init'ed to end of container
*
* @update gess4/18/98
* @return new dequeIterator
*/
nsDequeIterator End() const;
/**
* Call this method when you wanto to iterate all the
* members of the container, passing a functor along
* to call your code.
*
* @update gess4/20/98
* @param aFunctor object to call for each member
* @return *this
*/
void ForEach(nsDequeFunctor& aFunctor) const;
/**
* Call this method when you wanto to iterate all the
* members of the container, passing a functor along
* to call your code. This process will interupt if
* your function returns a null to this iterator.
*
* @update gess4/20/98
* @param aFunctor object to call for each member
* @return *this
*/
const void* FirstThat(nsDequeFunctor& aFunctor) const;
void SetDeallocator(nsDequeFunctor* aDeallocator);
/**
* Perform automated selftest on the deque
*
* @update gess4/18/98
* @param
* @return
*/
static void SelfTest();
protected:
PRInt32 mSize;
PRInt32 mCapacity;
PRInt32 mOrigin;
nsDequeFunctor* mDeallocator;
void* mBuffer[8];
void** mData;
private:
/**
* Simple default constructor (PRIVATE)
*
* @update gess4/18/98
* @param
* @return
*/
nsDeque();
/**
* Copy constructor (PRIVATE)
*
* @update gess4/18/98
* @param
* @return
*/
nsDeque(const nsDeque& other);
/**
* Deque assignment operator (PRIVATE)
*
* @update gess4/18/98
* @param another deque
* @return *this
*/
nsDeque& operator=(const nsDeque& anOther);
nsDeque& GrowCapacity(void);
};
/******************************************************
* Here comes the nsDequeIterator class...
******************************************************/
class NS_COM nsDequeIterator {
public:
/**
* DequeIterator is an object that knows how to iterate (forward and backward)
* a Deque. Normally, you don't need to do this, but there are some special
* cases where it is pretty handy, so here you go.
*
* @update gess4/18/98
* @param aQueue is the deque object to be iterated
* @param anIndex is the starting position for your iteration
*/
nsDequeIterator(const nsDeque& aQueue,int anIndex=0);
/**
* DequeIterator is an object that knows how to iterate (forward and backward)
* a Deque. Normally, you don't need to do this, but there are some special
* cases where it is pretty handy, so here you go.
*
* @update gess4/18/98
* @param aQueue is the deque object to be iterated
* @param anIndex is the starting position for your iteration
*/
nsDequeIterator(const nsDequeIterator& aCopy);
/**
* Moves iterator to first element in deque
* @update gess4/18/98
* @return this
*/
nsDequeIterator& First(void);
/**
* Standard assignment operator for deque
* @update gess4/18/98
* @param
* @return
*/
nsDequeIterator& operator=(const nsDequeIterator& aCopy);
/**
* preform ! operation against to iterators to test for equivalence
* (or lack thereof)!
*
* @update gess4/18/98
* @param anIter is the object to be compared to
* @return TRUE if NOT equal.
*/
PRBool operator!=(nsDequeIterator& anIter);
/**
* Compare 2 iterators for equivalence.
*
* @update gess4/18/98
* @param anIter is the other iterator to be compared to
* @return TRUE if EQUAL
*/
PRBool operator<(nsDequeIterator& anIter);
/**
* Compare 2 iterators for equivalence.
*
* @update gess4/18/98
* @param anIter is the other iterator to be compared to
* @return TRUE if EQUAL
*/
PRBool operator==(nsDequeIterator& anIter);
/**
* Compare 2 iterators for equivalence.
*
* @update gess4/18/98
* @param anIter is the other iterator to be compared to
* @return TRUE if EQUAL
*/
PRBool operator>=(nsDequeIterator& anIter);
/**
* Pre-increment operator
*
* @update gess4/18/98
* @return object at preincremented index
*/
void* operator++();
/**
* Post-increment operator
*
* @update gess4/18/98
* @param param is ignored
* @return object at post-incremented index
*/
void* operator++(int);
/**
* Pre-decrement operator
*
* @update gess4/18/98
* @return object at pre-decremented index
*/
void* operator--();
/**
* Post-decrement operator
*
* @update gess4/18/98
* @param param is ignored
* @return object at post-decremented index
*/
void* operator--(int);
/**
* Retrieve the ptr to the iterators notion of current node
*
* @update gess4/18/98
* @return object at ith index
*/
void* GetCurrent(void);
/**
* Call this method when you wanto to iterate all the
* members of the container, passing a functor along
* to call your code.
*
* @update gess4/20/98
* @param aFunctor object to call for each member
* @return *this
*/
void ForEach(nsDequeFunctor& aFunctor) const;
/**
* Call this method when you wanto to iterate all the
* members of the container, passing a functor along
* to call your code.
*
* @update gess4/20/98
* @param aFunctor object to call for each member
* @return *this
*/
const void* FirstThat(nsDequeFunctor& aFunctor) const;
protected:
PRInt32 mIndex;
const nsDeque& mDeque;
};
#endif

View File

@@ -1,75 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/*
An empty enumerator.
*/
#include "nsIEnumerator.h"
////////////////////////////////////////////////////////////////////////
class EmptyEnumeratorImpl : public nsISimpleEnumerator
{
public:
EmptyEnumeratorImpl(void) {};
virtual ~EmptyEnumeratorImpl(void) {};
// nsISupports interface
NS_IMETHOD_(nsrefcnt) AddRef(void) {
return 2;
}
NS_IMETHOD_(nsrefcnt) Release(void) {
return 1;
}
NS_IMETHOD QueryInterface(REFNSIID iid, void** result) {
if (! result)
return NS_ERROR_NULL_POINTER;
if (iid.Equals(nsISimpleEnumerator::GetIID()) ||
iid.Equals(NS_GET_IID(nsISupports))) {
*result = (nsISimpleEnumerator*) this;
NS_ADDREF(this);
return NS_OK;
}
return NS_NOINTERFACE;
}
// nsISimpleEnumerator
NS_IMETHOD HasMoreElements(PRBool* aResult) {
*aResult = PR_FALSE;
return NS_OK;
}
NS_IMETHOD GetNext(nsISupports** aResult) {
return NS_ERROR_UNEXPECTED;
}
};
extern "C" NS_COM nsresult
NS_NewEmptyEnumerator(nsISimpleEnumerator** aResult)
{
static EmptyEnumeratorImpl gEmptyEnumerator;
*aResult = &gEmptyEnumerator;
return NS_OK;
}

View File

@@ -1,228 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsEnumeratorUtils.h"
nsArrayEnumerator::nsArrayEnumerator(nsISupportsArray* aValueArray)
: mValueArray(aValueArray),
mIndex(0)
{
NS_INIT_REFCNT();
NS_IF_ADDREF(mValueArray);
}
nsArrayEnumerator::~nsArrayEnumerator(void)
{
NS_IF_RELEASE(mValueArray);
}
NS_IMPL_ISUPPORTS1(nsArrayEnumerator, nsISimpleEnumerator)
NS_IMETHODIMP
nsArrayEnumerator::HasMoreElements(PRBool* aResult)
{
NS_PRECONDITION(aResult != 0, "null ptr");
if (! aResult)
return NS_ERROR_NULL_POINTER;
PRUint32 cnt;
nsresult rv = mValueArray->Count(&cnt);
if (NS_FAILED(rv)) return rv;
*aResult = (mIndex < (PRInt32) cnt);
return NS_OK;
}
NS_IMETHODIMP
nsArrayEnumerator::GetNext(nsISupports** aResult)
{
NS_PRECONDITION(aResult != 0, "null ptr");
if (! aResult)
return NS_ERROR_NULL_POINTER;
PRUint32 cnt;
nsresult rv = mValueArray->Count(&cnt);
if (NS_FAILED(rv)) return rv;
if (mIndex >= (PRInt32) cnt)
return NS_ERROR_UNEXPECTED;
*aResult = mValueArray->ElementAt(mIndex++);
return NS_OK;
}
extern "C" NS_COM nsresult
NS_NewArrayEnumerator(nsISimpleEnumerator* *result,
nsISupportsArray* array)
{
nsArrayEnumerator* enumer = new nsArrayEnumerator(array);
if (enumer == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(enumer);
*result = enumer;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
nsSingletonEnumerator::nsSingletonEnumerator(nsISupports* aValue)
: mValue(aValue)
{
NS_INIT_REFCNT();
NS_IF_ADDREF(mValue);
mConsumed = (mValue ? PR_FALSE : PR_TRUE);
}
nsSingletonEnumerator::~nsSingletonEnumerator()
{
NS_IF_RELEASE(mValue);
}
NS_IMPL_ISUPPORTS1(nsSingletonEnumerator, nsISimpleEnumerator)
NS_IMETHODIMP
nsSingletonEnumerator::HasMoreElements(PRBool* aResult)
{
NS_PRECONDITION(aResult != 0, "null ptr");
if (! aResult)
return NS_ERROR_NULL_POINTER;
*aResult = !mConsumed;
return NS_OK;
}
NS_IMETHODIMP
nsSingletonEnumerator::GetNext(nsISupports** aResult)
{
NS_PRECONDITION(aResult != 0, "null ptr");
if (! aResult)
return NS_ERROR_NULL_POINTER;
if (mConsumed)
return NS_ERROR_UNEXPECTED;
mConsumed = PR_TRUE;
NS_ADDREF(mValue);
*aResult = mValue;
return NS_OK;
}
extern "C" NS_COM nsresult
NS_NewSingletonEnumerator(nsISimpleEnumerator* *result,
nsISupports* singleton)
{
nsSingletonEnumerator* enumer = new nsSingletonEnumerator(singleton);
if (enumer == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(enumer);
*result = enumer;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////
nsAdapterEnumerator::nsAdapterEnumerator(nsIEnumerator* aEnum)
: mEnum(aEnum), mCurrent(0), mStarted(PR_FALSE)
{
NS_INIT_REFCNT();
NS_ADDREF(mEnum);
}
nsAdapterEnumerator::~nsAdapterEnumerator()
{
NS_RELEASE(mEnum);
NS_IF_RELEASE(mCurrent);
}
NS_IMPL_ISUPPORTS1(nsAdapterEnumerator, nsISimpleEnumerator)
NS_IMETHODIMP
nsAdapterEnumerator::HasMoreElements(PRBool* aResult)
{
nsresult rv;
if (mCurrent) {
*aResult = PR_TRUE;
return NS_OK;
}
if (! mStarted) {
mStarted = PR_TRUE;
rv = mEnum->First();
if (rv == NS_OK) {
mEnum->CurrentItem(&mCurrent);
*aResult = PR_TRUE;
}
else {
*aResult = PR_FALSE;
}
}
else {
*aResult = PR_FALSE;
rv = mEnum->IsDone();
if (rv != NS_OK) {
// We're not done. Advance to the next one.
rv = mEnum->Next();
if (rv == NS_OK) {
mEnum->CurrentItem(&mCurrent);
*aResult = PR_TRUE;
}
}
}
return NS_OK;
}
NS_IMETHODIMP
nsAdapterEnumerator::GetNext(nsISupports** aResult)
{
nsresult rv;
PRBool hasMore;
rv = HasMoreElements(&hasMore);
if (NS_FAILED(rv)) return rv;
if (! hasMore)
return NS_ERROR_UNEXPECTED;
// No need to addref, we "transfer" the ownership to the caller.
*aResult = mCurrent;
mCurrent = 0;
return NS_OK;
}
extern "C" NS_COM nsresult
NS_NewAdapterEnumerator(nsISimpleEnumerator* *result,
nsIEnumerator* enumerator)
{
nsAdapterEnumerator* enumer = new nsAdapterEnumerator(enumerator);
if (enumer == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(enumer);
*result = enumer;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////

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@@ -1,97 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsEnumeratorUtils_h__
#define nsEnumeratorUtils_h__
#include "nsIEnumerator.h"
#include "nsISupportsArray.h"
class NS_COM nsArrayEnumerator : public nsISimpleEnumerator
{
public:
// nsISupports interface
NS_DECL_ISUPPORTS
// nsISimpleEnumerator interface
NS_IMETHOD HasMoreElements(PRBool* aResult);
NS_IMETHOD GetNext(nsISupports** aResult);
// nsRDFArrayEnumerator methods
nsArrayEnumerator(nsISupportsArray* aValueArray);
virtual ~nsArrayEnumerator(void);
protected:
nsISupportsArray* mValueArray;
PRInt32 mIndex;
};
extern "C" NS_COM nsresult
NS_NewArrayEnumerator(nsISimpleEnumerator* *result,
nsISupportsArray* array);
////////////////////////////////////////////////////////////////////////////////
class NS_COM nsSingletonEnumerator : public nsISimpleEnumerator
{
public:
NS_DECL_ISUPPORTS
// nsISimpleEnumerator methods
NS_IMETHOD HasMoreElements(PRBool* aResult);
NS_IMETHOD GetNext(nsISupports** aResult);
nsSingletonEnumerator(nsISupports* aValue);
virtual ~nsSingletonEnumerator();
protected:
nsISupports* mValue;
PRBool mConsumed;
};
extern "C" NS_COM nsresult
NS_NewSingletonEnumerator(nsISimpleEnumerator* *result,
nsISupports* singleton);
////////////////////////////////////////////////////////////////////////////////
class NS_COM nsAdapterEnumerator : public nsISimpleEnumerator
{
public:
NS_DECL_ISUPPORTS
// nsISimpleEnumerator methods
NS_IMETHOD HasMoreElements(PRBool* aResult);
NS_IMETHOD GetNext(nsISupports** aResult);
nsAdapterEnumerator(nsIEnumerator* aEnum);
virtual ~nsAdapterEnumerator();
protected:
nsIEnumerator* mEnum;
nsISupports* mCurrent;
PRBool mStarted;
};
extern "C" NS_COM nsresult
NS_NewAdapterEnumerator(nsISimpleEnumerator* *result,
nsIEnumerator* enumerator);
////////////////////////////////////////////////////////////////////////
#endif /* nsEnumeratorUtils_h__ */

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@@ -1,67 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsIArena_h___
#define nsIArena_h___
#include "nscore.h"
#include "nsISupports.h"
#define NS_MIN_ARENA_BLOCK_SIZE 64
#define NS_DEFAULT_ARENA_BLOCK_SIZE 4096
/// Interface IID for nsIArena
#define NS_IARENA_IID \
{ 0xa24fdad0, 0x93b4, 0x11d1, \
{0x89, 0x5b, 0x00, 0x60, 0x08, 0x91, 0x1b, 0x81} }
#define NS_ARENA_PROGID "component://netscape/arena"
#define NS_ARENA_CLASSNAME "Arena"
/** Interface to a memory arena abstraction. Arena's use large blocks
* of memory to allocate smaller objects. Arena's provide no free
* operator; instead, all of the objects in the arena are deallocated
* by deallocating the arena (e.g. when it's reference count goes to
* zero)
*/
class nsIArena : public nsISupports {
public:
static const nsIID& GetIID() { static nsIID iid = NS_IARENA_IID; return iid; }
NS_IMETHOD Init(PRUint32 arenaBlockSize) = 0;
NS_IMETHOD_(void*) Alloc(PRUint32 size) = 0;
};
/**
* Create a new arena using the desired block size for allocating the
* underlying memory blocks. The underlying memory blocks are allocated
* using the PR heap.
*/
extern NS_COM nsresult NS_NewHeapArena(nsIArena** aInstancePtrResult,
PRUint32 aArenaBlockSize = 0);
#define NS_ARENA_CID \
{ /* 9832ec80-0d6b-11d3-9331-00104ba0fd40 */ \
0x9832ec80, \
0x0d6b, \
0x11d3, \
{0x93, 0x31, 0x00, 0x10, 0x4b, 0xa0, 0xfd, 0x40} \
}
#endif /* nsIArena_h___ */

View File

@@ -1,82 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code,
* released March 31, 1998.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are
* Copyright (C) 1998-1999 Netscape Communications Corporation. All Rights
* Reserved.
*
* Contributors:
*
*/
#include "nsISupports.idl"
interface nsISizeOfHandler;
[ref] native nsStringRef(nsString);
%{ C++
class nsString;
%}
[uuid(3d1b15b0-93b4-11d1-895b-006008911b81)]
interface nsIAtom : nsISupports
{
/**
* Translate the unicode string into the stringbuf.
*/
void ToString(in nsStringRef aString);
/**
* Return a pointer to a zero terminated unicode string.
*/
void GetUnicode([shared, retval] out wstring aResult);
/**
* Get the size, in bytes, of the atom.
*/
PRUint32 SizeOf(in nsISizeOfHandler aHandler);
};
%{C++
/**
* Find an atom that matches the given iso-latin1 C string. The
* C string is translated into it's unicode equivalent.
*/
extern NS_COM nsIAtom* NS_NewAtom(const char* isolatin1);
/**
* Find an atom that matches the given unicode string. The string is assumed
* to be zero terminated.
*/
extern NS_COM nsIAtom* NS_NewAtom(const PRUnichar* unicode);
/**
* Find an atom that matches the given string.
*/
extern NS_COM nsIAtom* NS_NewAtom(const nsString& aString);
/**
* Return a count of the total number of atoms currently
* alive in the system.
*/
extern NS_COM nsrefcnt NS_GetNumberOfAtoms(void);
extern NS_COM void NS_PurgeAtomTable(void);
%}

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@@ -1,312 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsIBuffer_h___
#define nsIBuffer_h___
/**
* nsIBuffer is something that we use to implement pipes (buffered
* input/output stream pairs). It might be useful to you for other
* purposes, but if not, oh well.
*
* One of the important things to understand about pipes is how
* they work with respect to EOF and result values. The following
* table describes:
*
* | empty & not EOF | full | reader closed | writer closed |
* -------------------------------------------------------------------------------------------------------------
* buffer Read | readCount == 0 | readCount == N | N/A | readCount == N, return NS_OK -or- |
* operations | return WOULD_BLOCK | return NS_OK | | readCount == 0, return EOF |
* -------------------------------------------------------------------------------------------------------------
* buffer Write | writeCount == N | writeCount == 0 | N/A | assertion! |
* operations | return NS_OK | return WOULD_BLOCK | | |
* -------------------------------------------------------------------------------------------------------------
* input stream | readCount == 0 | readCount == N | assertion! | readCount == N, return NS_OK -or- |
* Read ops | return WOULD_BLOCK | return NS_OK | | readCount == 0, return EOF |
* -------------------------------------------------------------------------------------------------------------
* output stream | writeCount == N | writeCount == 0 | return | assertion! |
* Write ops | return NS_OK | return WOULD_BLOCK | STREAM_CLOSED | |
* -------------------------------------------------------------------------------------------------------------
*/
#include "nsISupports.h"
#include "nscore.h"
class nsIInputStream;
class nsIAllocator;
class nsIBufferInputStream;
class nsIBufferOutputStream;
class nsIBufferObserver;
#define NS_IBUFFER_IID \
{ /* 1eebb300-fb8b-11d2-9324-00104ba0fd40 */ \
0x1eebb300, \
0xfb8b, \
0x11d2, \
{0x93, 0x24, 0x00, 0x10, 0x4b, 0xa0, 0xfd, 0x40} \
}
#define NS_BUFFER_CID \
{ /* 5dbe4de0-fbab-11d2-9324-00104ba0fd40 */ \
0x5dbe4de0, \
0xfbab, \
0x11d2, \
{0x93, 0x24, 0x00, 0x10, 0x4b, 0xa0, 0xfd, 0x40} \
}
#define NS_BUFFER_PROGID "component://netscape/buffer"
#define NS_BUFFER_CLASSNAME "Buffer"
/**
* The signature for the reader function passed to WriteSegment. This
* specifies where the data should come from that gets written into the buffer.
* Implementers should return the following:
* @return NS_OK and readCount - if successfully read something
* @return NS_BASE_STREAM_EOF - if no more to read
* @return NS_BASE_STREAM_WOULD_BLOCK - if there is currently no data (in
* a non-blocking mode)
* @return <other-error> - on failure
*/
typedef NS_CALLBACK(nsReadSegmentFun)(void* closure,
char* toRawSegment,
PRUint32 fromOffset,
PRUint32 count,
PRUint32 *readCount);
/**
* The signature of the writer function passed to ReadSegments. This
* specifies where the data should go that gets read from the buffer.
* Implementers should return the following:
* @return NS_OK and writeCount - if successfully wrote something
* @return NS_BASE_STREAM_CLOSED - if no more can be written
* @return NS_BASE_STREAM_WOULD_BLOCK - if there is currently space to write (in
* a non-blocking mode)
* @return <other-error> - on failure
*/
typedef NS_CALLBACK(nsWriteSegmentFun)(void* closure,
const char* fromRawSegment,
PRUint32 toOffset,
PRUint32 count,
PRUint32 *writeCount);
class nsIBuffer : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IBUFFER_IID);
/**
* The segment overhead is the amount of space chopped out of each
* segment for implementation purposes. The remainder of the segment
* is available for data, e.g.:
* segmentDataSize = growBySize - SEGMENT_OVERHEAD;
*/
enum { SEGMENT_OVERHEAD = 8 };
/**
* Initializes a buffer. The segment size (including overhead) will
* start from and increment by the growBySize, until reaching maxSize.
* The size of the data that can fit in a segment will be the growBySize
* minus SEGMENT_OVERHEAD bytes.
*/
NS_IMETHOD Init(PRUint32 growBySize, PRUint32 maxSize,
nsIBufferObserver* observer, nsIAllocator* allocator) = 0;
////////////////////////////////////////////////////////////////////////////
// Methods for Readers
/**
* Reads from the read cursor into a char buffer up to a specified length.
*/
NS_IMETHOD Read(char* toBuf, PRUint32 bufLen, PRUint32 *readCount) = 0;
/**
* This read method allows you to pass a callback function that gets called
* repeatedly for each buffer segment until the entire amount is read.
* This avoids the need to copy data to/from and intermediate buffer.
*/
NS_IMETHOD ReadSegments(nsWriteSegmentFun writer, void* closure, PRUint32 count,
PRUint32 *readCount) = 0;
/**
* Returns the raw char buffer segment and its length available for reading.
* @param segmentLogicalOffset - The offset from the current read cursor for
* the segment to be returned. If this is beyond the available written area,
* NULL is returned for the resultSegment.
* @param resultSegment - The resulting read segment.
* @param resultSegmentLength - The resulting read segment length.
*
* @return NS_OK - if a read segment is successfully returned, or if
* the requested offset is at or beyond the write cursor (in which case
* the resultSegment will be nsnull and the resultSegmentLen will be 0)
* @return NS_BASE_STREAM_WOULD_BLOCK - if the buffer size becomes 0
* @return any error set by SetCondition if the requested offset is at
* or beyond the write cursor (in which case the resultSegment will be
* nsnull and the resultSegmentLen will be 0). Note that NS_OK will be
* returned if SetCondition has not been called.
* @return any error returned by OnEmpty
*/
NS_IMETHOD GetReadSegment(PRUint32 segmentLogicalOffset,
const char* *resultSegment,
PRUint32 *resultSegmentLen) = 0;
/**
* Returns the amount of data currently in the buffer available for reading.
*/
NS_IMETHOD GetReadableAmount(PRUint32 *amount) = 0;
/**
* Searches for a string in the buffer. Since the buffer has a notion
* of EOF, it is possible that the string may at some time be in the
* buffer, but is is not currently found up to some offset. Consequently,
* both the found and not found cases return an offset:
* if found, return offset where it was found
* if not found, return offset of the first byte not searched
* In the case the buffer is at EOF and the string is not found, the first
* byte not searched will correspond to the length of the buffer.
*/
NS_IMETHOD Search(const char* forString, PRBool ignoreCase,
PRBool *found, PRUint32 *offsetSearchedTo) = 0;
/**
* Sets that the reader has closed their end of the stream.
*/
NS_IMETHOD ReaderClosed(void) = 0;
/**
* Tests whether EOF marker is set. Note that this does not necessarily mean that
* all the data in the buffer has yet been consumed.
*/
NS_IMETHOD GetCondition(nsresult *result) = 0;
////////////////////////////////////////////////////////////////////////////
// Methods for Writers
/**
* Writes from a char buffer up to a specified length.
* @param writeCount - The amount that could be written. If the buffer becomes full,
* this could be less then the specified bufLen.
*/
NS_IMETHOD Write(const char* fromBuf, PRUint32 bufLen, PRUint32 *writeCount) = 0;
/**
* Writes from an input stream up to a specified count of bytes.
* @param writeCount - The amount that could be written. If the buffer becomes full,
* this could be less then the specified count.
*/
NS_IMETHOD WriteFrom(nsIInputStream* fromStream, PRUint32 count, PRUint32 *writeCount) = 0;
/**
* This write method allows you to pass a callback function that gets called
* repeatedly for each buffer segment until the entire amount is written.
* This avoids the need to copy data to/from and intermediate buffer.
*/
NS_IMETHOD WriteSegments(nsReadSegmentFun reader, void* closure, PRUint32 count,
PRUint32 *writeCount) = 0;
/**
* Returns the raw char buffer segment and its length available for writing.
* @param resultSegment - The resulting write segment.
* @param resultSegmentLength - The resulting write segment length.
*
* @return NS_OK - if there is a segment available to write to
* @return NS_BASE_STREAM_CLOSED - if ReaderClosed has been called
* @return NS_BASE_STREAM_WOULD_BLOCK - if the max buffer size is exceeded
* @return NS_ERROR_OUT_OF_MEMORY - if a new segment could not be allocated
* @return any error returned by OnFull
*/
NS_IMETHOD GetWriteSegment(char* *resultSegment,
PRUint32 *resultSegmentLen) = 0;
/**
* Returns the amount of space currently in the buffer available for writing.
*/
NS_IMETHOD GetWritableAmount(PRUint32 *amount) = 0;
/**
* Returns whether the reader has closed their end of the stream.
*/
NS_IMETHOD GetReaderClosed(PRBool *result) = 0;
/**
* Sets an EOF marker (typcially done by the writer) so that a reader can be informed
* when all the data in the buffer is consumed. After the EOF marker has been
* set, all subsequent calls to the above write methods will return NS_BASE_STREAM_EOF.
*/
NS_IMETHOD SetCondition(nsresult condition) = 0;
};
////////////////////////////////////////////////////////////////////////////////
#define NS_IBUFFEROBSERVER_IID \
{ /* 0c18bef0-22a8-11d3-9349-00104ba0fd40 */ \
0x0c18bef0, \
0x22a8, \
0x11d3, \
{0x93, 0x49, 0x00, 0x10, 0x4b, 0xa0, 0xfd, 0x40} \
}
/**
* A buffer observer is used to detect when the buffer becomes completely full
* or completely empty.
*/
class nsIBufferObserver : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IBUFFEROBSERVER_IID);
NS_IMETHOD OnFull(nsIBuffer* buffer) = 0;
NS_IMETHOD OnWrite(nsIBuffer*, PRUint32 amount) = 0;
NS_IMETHOD OnEmpty(nsIBuffer* buffer) = 0;
};
////////////////////////////////////////////////////////////////////////////////
/**
* Creates a new buffer.
* @param observer - may be null
*/
extern NS_COM nsresult
NS_NewBuffer(nsIBuffer* *result,
PRUint32 growBySize, PRUint32 maxSize,
nsIBufferObserver* observer);
/**
* Creates a new buffer, allocating segments from virtual memory pages.
*/
extern NS_COM nsresult
NS_NewPageBuffer(nsIBuffer* *result,
PRUint32 growBySize, PRUint32 maxSize,
nsIBufferObserver* observer);
extern NS_COM nsresult
NS_NewBufferInputStream(nsIBufferInputStream* *result,
nsIBuffer* buffer, PRBool blocking = PR_FALSE);
extern NS_COM nsresult
NS_NewBufferOutputStream(nsIBufferOutputStream* *result,
nsIBuffer* buffer, PRBool blocking = PR_FALSE);
extern NS_COM nsresult
NS_NewPipe(nsIBufferInputStream* *inStrResult,
nsIBufferOutputStream* *outStrResult,
PRUint32 growBySize, PRUint32 maxSize,
PRBool blocking, nsIBufferObserver* observer);
////////////////////////////////////////////////////////////////////////////////
#endif // nsIBuffer_h___

View File

@@ -1,76 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsIByteBuffer_h___
#define nsIByteBuffer_h___
#include "nscore.h"
#include "nsISupports.h"
class nsIInputStream;
#define NS_IBYTE_BUFFER_IID \
{ 0xe4a6e4b0, 0x93b4, 0x11d1, \
{0x89, 0x5b, 0x00, 0x60, 0x08, 0x91, 0x1b, 0x81} }
#define NS_IBYTEBUFFER_IID \
{ 0xe4a6e4b0, 0x93b4, 0x11d1, \
{0x89, 0x5b, 0x00, 0x60, 0x08, 0x91, 0x1b, 0x81} }
#define NS_BYTEBUFFER_PROGID "component://netscape/byte-buffer"
#define NS_BYTEBUFFER_CLASSNAME "Byte Buffer"
/** Interface to a buffer that holds bytes */
class nsIByteBuffer : public nsISupports {
public:
static const nsIID& GetIID() { static nsIID iid = NS_IBYTEBUFFER_IID; return iid; }
NS_IMETHOD Init(PRUint32 aBufferSize) = 0;
/** @return length of buffer, i.e. how many bytes are currently in it. */
NS_IMETHOD_(PRUint32) GetLength(void) const = 0;
/** @return number of bytes allocated in the buffer */
NS_IMETHOD_(PRUint32) GetBufferSize(void) const = 0;
/** @return the buffer */
NS_IMETHOD_(char*) GetBuffer(void) const = 0;
/** Grow buffer to aNewSize bytes. */
NS_IMETHOD_(PRBool) Grow(PRUint32 aNewSize) = 0;
/** Fill the buffer with data from aStream. Don't grow the buffer, only
* read until length of buffer equals buffer size. */
NS_IMETHOD_(PRInt32) Fill(nsresult* aErrorCode, nsIInputStream* aStream,
PRUint32 aKeep) = 0;
};
#define NS_BYTEBUFFER_CID \
{ /* a49d5280-0d6b-11d3-9331-00104ba0fd40 */ \
0xa49d5280, \
0x0d6b, \
0x11d3, \
{0x93, 0x31, 0x00, 0x10, 0x4b, 0xa0, 0xfd, 0x40} \
}
/** Create a new byte buffer using the given buffer size. */
extern NS_COM nsresult
NS_NewByteBuffer(nsIByteBuffer** aInstancePtrResult,
nsISupports* aOuter,
PRUint32 aBufferSize = 0);
#endif /* nsIByteBuffer_h___ */

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@@ -1,38 +0,0 @@
/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsISupports.idl"
#include "nsIEnumerator.idl"
[scriptable, uuid(83b6019c-cbc4-11d2-8cca-0060b0fc14a3)]
interface nsICollection : nsISupports
{
PRUint32 Count();
nsISupports GetElementAt(in PRUint32 index);
void QueryElementAt(in PRUint32 index, in nsIIDRef uuid,
[iid_is(uuid),retval] out nsQIResult result);
void SetElementAt(in PRUint32 index, in nsISupports item);
void AppendElement(in nsISupports item);
void RemoveElement(in nsISupports item);
nsIEnumerator Enumerate();
void Clear();
};

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@@ -1,95 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsISupports.idl"
[scriptable, uuid(D1899240-F9D2-11D2-BDD6-000064657374)]
interface nsISimpleEnumerator : nsISupports {
boolean HasMoreElements();
nsISupports GetNext();
};
/*
* DO NOT USE THIS INTERFACE. IT IS HORRIBLY BROKEN, USES NS_COMFALSE
* AND IS BASICALLY IMPOSSIBLE TO USE CORRECTLY THROUGH PROXIES OR
* XPCONNECT. IF YOU SEE NEW USES OF THIS INTERFACE IN CODE YOU ARE
* REVIEWING, YOU SHOULD INSIST ON nsISimpleEnumerator.
*
* DON'T MAKE ME COME OVER THERE.
*/
[scriptable, uuid(ad385286-cbc4-11d2-8cca-0060b0fc14a3)]
interface nsIEnumerator : nsISupports {
/** First will reset the list. will return NS_FAILED if no items
*/
void first();
/** Next will advance the list. will return failed if already at end
*/
void next();
/** CurrentItem will return the CurrentItem item it will fail if the
* list is empty
*/
nsISupports currentItem();
/** return if the collection is at the end. that is the beginning following
* a call to Prev and it is the end of the list following a call to next
*/
void isDone();
};
[uuid(75f158a0-cadd-11d2-8cca-0060b0fc14a3)]
interface nsIBidirectionalEnumerator : nsIEnumerator {
/** Last will reset the list to the end. will return NS_FAILED if no items
*/
void Last();
/** Prev will decrement the list. will return failed if already at beginning
*/
void Prev();
};
%{C++
extern "C" NS_COM nsresult
NS_NewEmptyEnumerator(nsISimpleEnumerator** aResult);
// Construct and return an implementation of a "conjoining enumerator." This
// enumerator lets you string together two other enumerators into one sequence.
// The result is an nsIBidirectionalEnumerator, but if either input is not
// also bidirectional, the Last and Prev operations will fail.
extern "C" NS_COM nsresult
NS_NewConjoiningEnumerator(nsIEnumerator* first, nsIEnumerator* second,
nsIBidirectionalEnumerator* *aInstancePtrResult);
// Construct and return an implementation of a "union enumerator." This
// enumerator will only return elements that are found in both constituent
// enumerators.
extern "C" NS_COM nsresult
NS_NewUnionEnumerator(nsIEnumerator* first, nsIEnumerator* second,
nsIEnumerator* *aInstancePtrResult);
// Construct and return an implementation of an "intersection enumerator." This
// enumerator will return elements that are found in either constituent
// enumerators, eliminating duplicates.
extern "C" NS_COM nsresult
NS_NewIntersectionEnumerator(nsIEnumerator* first, nsIEnumerator* second,
nsIEnumerator* *aInstancePtrResult);
%}

View File

@@ -1,44 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsISupports.idl"
[scriptable, uuid(DB242E01-E4D9-11d2-9DDE-000064657374)]
interface nsIObserver : nsISupports {
/*------------------------------- Observe ----------------------------------
| Called when aTopic changes for aSubject (presumably; it is actually |
| called whenever anyone calls nsIObserverService::Notify for aTopic). |
| |
| Implement this in your class to handle the event appropriately. If |
| your observer objects can respond to multiple topics and/or subjects, |
| then you will have to filter accordingly. |
--------------------------------------------------------------------------*/
void Observe( in nsISupports aSubject,
in wstring aTopic,
in wstring someData );
};
%{C++
#define NS_OBSERVER_PROGID "component://netscape/xpcom/observer"
#define NS_OBSERVER_CLASSNAME "Observer"
%}

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@@ -1,48 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsIObserverList_h__
#define nsIObserverList_h__
#include "nsISupports.h"
#include "nsIObserver.h"
#include "nsIEnumerator.h"
#include "nscore.h"
// {E777D482-E6E3-11d2-8ACD-00105A1B8860}
#define NS_IOBSERVERLIST_IID \
{ 0xe777d482, 0xe6e3, 0x11d2, { 0x8a, 0xcd, 0x0, 0x10, 0x5a, 0x1b, 0x88, 0x60 } }
// {E777D484-E6E3-11d2-8ACD-00105A1B8860}
#define NS_OBSERVERLIST_CID \
{ 0xe777d484, 0xe6e3, 0x11d2, { 0x8a, 0xcd, 0x0, 0x10, 0x5a, 0x1b, 0x88, 0x60 } }
class nsIObserverList : public nsISupports {
public:
static const nsIID& GetIID() { static nsIID iid = NS_IOBSERVERLIST_IID; return iid; }
NS_IMETHOD AddObserver(nsIObserver** anObserver) = 0;
NS_IMETHOD RemoveObserver(nsIObserver** anObserver) = 0;
NS_IMETHOD EnumerateObserverList(nsIEnumerator** anEnumerator) = 0;
};
extern NS_COM nsresult NS_NewObserverList(nsIObserverList** anObserverList);
#endif /* nsIObserverList_h__ */

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@@ -1,41 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsISupports.idl"
#include "nsIObserver.idl"
#include "nsIEnumerator.idl"
[scriptable, uuid(D07F5192-E3D1-11d2-8ACD-00105A1B8860)]
interface nsIObserverService : nsISupports {
void AddObserver( in nsIObserver anObserver, in wstring aTopic );
void RemoveObserver( in nsIObserver anObserver, in wstring nsString );
nsIEnumerator EnumerateObserverList( in wstring aTopic );
void Notify( in nsISupports aSubject,
in wstring aTopic,
in wstring someData );
};
%{C++
#define NS_OBSERVERSERVICE_PROGID "component://netscape/observer-service"
#define NS_OBSERVERSERVICE_CLASSNAME "Observer Service"
%}

View File

@@ -1,57 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsIPageManager_h__
#define nsIPageManager_h__
#include "nsISupports.h"
#define NS_PAGEMGR_PAGE_BITS 12 // 4k pages
#define NS_PAGEMGR_PAGE_SIZE (1 << NS_PAGEMGR_PAGE_BITS)
#define NS_PAGEMGR_PAGE_MASK (NS_PAGEMGR_PAGE_SIZE - 1)
#define NS_PAGEMGR_PAGE_COUNT(bytes) (((bytes) + NS_PAGEMGR_PAGE_MASK) >> NS_PAGEMGR_PAGE_BITS)
#define NS_IPAGEMANAGER_IID \
{ /* bea98210-fb7b-11d2-9324-00104ba0fd40 */ \
0xbea98210, \
0xfb7b, \
0x11d2, \
{0x93, 0x24, 0x00, 0x10, 0x4b, 0xa0, 0xfd, 0x40} \
}
#define NS_PAGEMANAGER_CID \
{ /* cac907e0-fb7b-11d2-9324-00104ba0fd40 */ \
0xcac907e0, \
0xfb7b, \
0x11d2, \
{0x93, 0x24, 0x00, 0x10, 0x4b, 0xa0, 0xfd, 0x40} \
}
#define NS_PAGEMANAGER_PROGID "component://netscape/page-manager"
#define NS_PAGEMANAGER_CLASSNAME "Page Manager"
class nsIPageManager : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IPAGEMANAGER_IID);
NS_IMETHOD AllocPages(PRUint32 pageCount, void* *result) = 0;
NS_IMETHOD DeallocPages(PRUint32 pageCount, void* pages) = 0;
};
#endif // nsIPageManager_h__

View File

@@ -1,150 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsIProperties_h___
#define nsIProperties_h___
#include "nsISupports.h"
#include "nsIEnumerator.h"
#include "nsISupportsArray.h"
#define NS_IPROPERTIES_IID \
{ /* f42bc870-dc17-11d2-9311-00e09805570f */ \
0xf42bc870, \
0xdc17, \
0x11d2, \
{0x93, 0x11, 0x00, 0xe0, 0x98, 0x05, 0x57, 0x0f} \
}
#define NS_PROPERTIES_CID \
{ /* b3efe4d0-0d6b-11d3-9331-00104ba0fd40 */ \
0xb3efe4d0, \
0x0d6b, \
0x11d3, \
{0x93, 0x31, 0x00, 0x10, 0x4b, 0xa0, 0xfd, 0x40} \
}
#define NS_PROPERTIES_PROGID "component://netscape/properties"
#define NS_PROPERTIES_CLASSNAME "Properties"
class nsIProperties : public nsISupports {
public:
static const nsIID& GetIID() { static nsIID iid = NS_IPROPERTIES_IID; return iid; }
/**
* Defines a new property.
* @return NS_ERROR_FAILURE if a property is already defined.
*/
NS_IMETHOD DefineProperty(const char* prop, nsISupports* initialValue) = 0;
/**
* Undefines a property.
* @return NS_ERROR_FAILURE if a property is not already defined.
*/
NS_IMETHOD UndefineProperty(const char* prop) = 0;
/**
* Gets a property.
* @return NS_ERROR_FAILURE if a property is not already defined.
*/
NS_IMETHOD GetProperty(const char* prop, nsISupports* *result) = 0;
/**
* Sets a property.
* @return NS_ERROR_FAILURE if a property is not already defined.
*/
NS_IMETHOD SetProperty(const char* prop, nsISupports* value) = 0;
/**
* @return NS_OK if the property exists with the specified value
* @return NS_COMFALSE if the property does not exist, or doesn't have
* the specified value (values are compared with ==)
*/
NS_IMETHOD HasProperty(const char* prop, nsISupports* value) = 0;
};
// Returns a default implementation of an nsIProperties object.
extern nsresult
NS_NewIProperties(nsIProperties* *result);
////////////////////////////////////////////////////////////////////////////////
#include "nsID.h"
#include "nsIInputStream.h"
#include "nsIOutputStream.h"
#include "nsString.h"
// {1A180F60-93B2-11d2-9B8B-00805F8A16D9}
#define NS_IPERSISTENTPROPERTIES_IID \
{ 0x1a180f60, 0x93b2, 0x11d2, \
{ 0x9b, 0x8b, 0x0, 0x80, 0x5f, 0x8a, 0x16, 0xd9 } }
// {2245E573-9464-11d2-9B8B-00805F8A16D9}
NS_DECLARE_ID(kPersistentPropertiesCID,
0x2245e573, 0x9464, 0x11d2, 0x9b, 0x8b, 0x0, 0x80, 0x5f, 0x8a, 0x16, 0xd9);
#define NS_PERSISTENTPROPERTIES_PROGID "component://netscape/persistent-properties"
#define NS_PERSISTENTPROPERTIES_CLASSNAME "Persistent Properties"
class nsIPersistentProperties : public nsIProperties
{
public:
static const nsIID& GetIID() { static nsIID iid = NS_IPERSISTENTPROPERTIES_IID; return iid; }
NS_IMETHOD Load(nsIInputStream* aIn) = 0;
NS_IMETHOD Save(nsIOutputStream* aOut, const nsString& aHeader) = 0;
NS_IMETHOD Subclass(nsIPersistentProperties* aSubclass) = 0;
/**
* Enumerates the properties in the supplied enumerator.
* @return NS_ERROR_FAILURE if no properties to enumerate
*/
NS_IMETHOD EnumerateProperties(nsIBidirectionalEnumerator** aResult) = 0;
// XXX these 2 methods will be subsumed by the ones from
// nsIProperties once we figure this all out
NS_IMETHOD GetStringProperty(const nsString& aKey, nsString& aValue) = 0;
NS_IMETHOD SetStringProperty(const nsString& aKey, nsString& aNewValue,
nsString& aOldValue) = 0;
};
////////////////////////////////////////////////////////////////////////////////
// {C23C10B3-0E1A-11d3-A430-0060B0EB5963}
#define NS_IPROPERTYELEMENT_IID \
{ 0xc23c10b3, 0xe1a, 0x11d3, \
{ 0xa4, 0x30, 0x0, 0x60, 0xb0, 0xeb, 0x59, 0x63 } }
// {579C0568-0E1B-11d3-A430-0060B0EB5963}
NS_DECLARE_ID(kPropertyElementCID,
0x579c0568, 0xe1b, 0x11d3, 0xa4, 0x30, 0x0, 0x60, 0xb0, 0xeb, 0x59, 0x63);
class nsIPropertyElement : public nsISupports
{
public:
static const nsIID& GetIID() { static nsIID iid = NS_IPROPERTYELEMENT_IID; return iid; }
NS_IMETHOD SetKey(nsString* aKey) = 0;
NS_IMETHOD SetValue(nsString* aValue) = 0;
NS_IMETHOD GetKey(nsString** aReturnKey) = 0;
NS_IMETHOD GetValue(nsString** aReturnValue) = 0;
};
////////////////////////////////////////////////////////////////////////////////
#endif // nsIProperties_h___

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@@ -1,26 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsISimpleEnumerator_h__
#define nsISimpleEnumerator_h__
// This file is needed to pacify the xpidl-generated header files.
#include "nsIEnumerator.h"
#endif // nsISimpleEnumerator_h__

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@@ -1,100 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsISizeOfHandler_h___
#define nsISizeOfHandler_h___
#include "nscore.h"
#include "nsISupports.h"
/* c028d1f0-fc9e-11d1-89e4-006008911b81 */
#define NS_ISIZEOF_HANDLER_IID \
{ 0xc028d1f0, 0xfc9e, 0x11d1, {0x89, 0xe4, 0x00, 0x60, 0x08, 0x91, 0x1b, 0x81}}
class nsIAtom;
class nsISizeOfHandler;
/**
* Function used by the Report method to report data gathered during
* a collection of data.
*/
typedef void (*nsISizeofReportFunc)(nsISizeOfHandler* aHandler,
nsIAtom* aKey,
PRUint32 aCount,
PRUint32 aTotalSize,
PRUint32 aMinSize,
PRUint32 aMaxSize,
void* aArg);
/**
* An API to managing a sizeof computation of an arbitrary graph.
* The handler is responsible for remembering which objects have been
* seen before (using RecordObject). Note that the handler doesn't
* hold references to nsISupport's objects; the assumption is that the
* objects being sized are stationary and will not be modified during
* the sizing computation and therefore do not need an extra reference
* count.
*
* Users of this API are responsible for the actual graph/tree walking.
*/
class nsISizeOfHandler : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_ISIZEOF_HANDLER_IID)
/**
* Initialize the handler for a new collection of data. This empties
* out the object prescence table and the keyed size table.
*/
NS_IMETHOD Init() = 0;
/**
* Record the sizing status of a given object. The first time
* aObject is recorded, aResult will be PR_FALSE. Subsequent times,
* aResult will be PR_TRUE.
*/
NS_IMETHOD RecordObject(void* aObject, PRBool* aResult) = 0;
/**
* Add size information to the running size data. The atom is used
* as a key to keep type specific running totals of size
* information. This increments the total count and the total size
* as well as updates the minimum, maximum and total size for aKey's
* type.
*/
NS_IMETHOD AddSize(nsIAtom* aKey, PRUint32 aSize) = 0;
/**
* Enumerate data collected for each type and invoke the
* reporting function with the data gathered.
*/
NS_IMETHOD Report(nsISizeofReportFunc aFunc, void* aArg) = 0;
/**
* Get the current totals - the number of total objects sized (not
* necessarily anything to do with RecordObject's tracking of
* objects) and the total number of bytes that those object use. The
* counters are not reset by this call (use Init to reset
* everything).
*/
NS_IMETHOD GetTotals(PRUint32* aTotalCountResult,
PRUint32* aTotalSizeResult) = 0;
};
extern NS_COM nsresult
NS_NewSizeOfHandler(nsISizeOfHandler** aInstancePtrResult);
#endif /* nsISizeofHandler_h___ */

View File

@@ -1,104 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsISupports.idl"
#include "nsICollection.idl"
native nsISupportsArrayEnumFunc(nsISupportsArrayEnumFunc);
%{C++
class nsIBidirectionalEnumerator;
#define NS_SUPPORTSARRAY_CID \
{ /* bda17d50-0d6b-11d3-9331-00104ba0fd40 */ \
0xbda17d50, \
0x0d6b, \
0x11d3, \
{0x93, 0x31, 0x00, 0x10, 0x4b, 0xa0, 0xfd, 0x40} \
}
#define NS_SUPPORTSARRAY_PROGID "component://netscape/supports-array"
#define NS_SUPPORTSARRAY_CLASSNAME "Supports Array"
// Enumerator callback function. Return PR_FALSE to stop
typedef PRBool (*nsISupportsArrayEnumFunc)(nsISupports* aElement, void *aData);
%}
[scriptable, uuid(791eafa0-b9e6-11d1-8031-006008159b5a)]
interface nsISupportsArray : nsICollection {
[notxpcom] boolean Equals([const] in nsISupportsArray other);
[notxpcom] nsISupports ElementAt(in unsigned long aIndex);
[notxpcom] long IndexOf([const] in nsISupports aPossibleElement);
[notxpcom] long IndexOfStartingAt([const] in nsISupports aPossibleElement,
in unsigned long aStartIndex);
[notxpcom] long LastIndexOf([const] in nsISupports aPossibleElement);
// xpcom-compatible versions
long GetIndexOf(in nsISupports aPossibleElement);
long GetIndexOfStartingAt(in nsISupports aPossibleElement,
in unsigned long aStartIndex);
long GetLastIndexOf(in nsISupports aPossibleElement);
[notxpcom] boolean InsertElementAt(in nsISupports aElement,
in unsigned long aIndex);
[notxpcom] boolean ReplaceElementAt(in nsISupports aElement,
in unsigned long aIndex);
[notxpcom] boolean RemoveElementAt(in unsigned long aIndex);
[notxpcom] boolean RemoveLastElement([const] in nsISupports aElement);
// xpcom-compatible versions
void DeleteLastElement(in nsISupports aElement);
void DeleteElementAt(in unsigned long aIndex);
[notxpcom] boolean AppendElements(in nsISupportsArray aElements);
void Compact();
[notxpcom, noscript]
boolean EnumerateForwards(in nsISupportsArrayEnumFunc aFunc,
in voidStar aData);
[notxpcom, noscript]
boolean EnumerateBackwards(in nsISupportsArrayEnumFunc aFunc,
in voidStar aData);
%{C++
private:
// NS_IMETHOD_(nsISupportsArray&) operator=(const nsISupportsArray& other) = 0;
NS_IMETHOD_(PRBool) operator==(const nsISupportsArray& other) = 0;
NS_IMETHOD_(nsISupports*) operator[](PRUint32 aIndex) = 0;
%}
};
%{C++
// Construct and return a default implementation of nsISupportsArray:
extern NS_COM nsresult
NS_NewISupportsArray(nsISupportsArray** aInstancePtrResult);
// Construct and return a default implementation of an enumerator for nsISupportsArrays:
extern NS_COM nsresult
NS_NewISupportsArrayEnumerator(nsISupportsArray* array,
nsIBidirectionalEnumerator* *aInstancePtrResult);
%}

View File

@@ -1,263 +0,0 @@
/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/* nsISupports wrappers for single primitive pieces of data. */
#include "nsISupports.idl"
/**
* These first three are pointer types and do data copying
* using the nsIAllocator. Be careful!
*/
[scriptable, uuid(d18290a0-4a1c-11d3-9890-006008962422)]
interface nsISupportsID : nsISupports
{
attribute nsIDPtr data;
string toString();
};
[scriptable, uuid(d65ff270-4a1c-11d3-9890-006008962422)]
interface nsISupportsString : nsISupports
{
attribute string data;
string toString();
};
[scriptable, uuid(d79dc970-4a1c-11d3-9890-006008962422)]
interface nsISupportsWString : nsISupports
{
attribute wstring data;
wstring toString();
};
/**
* The rest are truly primitive and are passed by value
*/
[scriptable, uuid(ddc3b490-4a1c-11d3-9890-006008962422)]
interface nsISupportsPRBool : nsISupports
{
attribute PRBool data;
string toString();
};
[scriptable, uuid(dec2e4e0-4a1c-11d3-9890-006008962422)]
interface nsISupportsPRUint8 : nsISupports
{
attribute PRUint8 data;
string toString();
};
[scriptable, uuid(dfacb090-4a1c-11d3-9890-006008962422)]
interface nsISupportsPRUint16 : nsISupports
{
attribute PRUint16 data;
string toString();
};
[scriptable, uuid(e01dc470-4a1c-11d3-9890-006008962422)]
interface nsISupportsPRUint32 : nsISupports
{
attribute PRUint32 data;
string toString();
};
[scriptable, uuid(e13567c0-4a1c-11d3-9890-006008962422)]
interface nsISupportsPRUint64 : nsISupports
{
attribute PRUint64 data;
string toString();
};
[scriptable, uuid(e2563630-4a1c-11d3-9890-006008962422)]
interface nsISupportsPRTime : nsISupports
{
attribute PRTime data;
string toString();
};
[scriptable, uuid(e2b05e40-4a1c-11d3-9890-006008962422)]
interface nsISupportsChar : nsISupports
{
attribute char data;
string toString();
};
[scriptable, uuid(e30d94b0-4a1c-11d3-9890-006008962422)]
interface nsISupportsPRInt16 : nsISupports
{
attribute PRInt16 data;
string toString();
};
[scriptable, uuid(e36c5250-4a1c-11d3-9890-006008962422)]
interface nsISupportsPRInt32 : nsISupports
{
attribute PRInt32 data;
string toString();
};
[scriptable, uuid(e3cb0ff0-4a1c-11d3-9890-006008962422)]
interface nsISupportsPRInt64 : nsISupports
{
attribute PRInt64 data;
string toString();
};
[scriptable, uuid(abeaa390-4ac0-11d3-baea-00805f8a5dd7)]
interface nsISupportsFloat : nsISupports
{
attribute float data;
string toString();
};
[scriptable, uuid(b32523a0-4ac0-11d3-baea-00805f8a5dd7)]
interface nsISupportsDouble : nsISupports
{
attribute double data;
string toString();
};
[scriptable, uuid(464484f0-568d-11d3-baf8-00805f8a5dd7)]
interface nsISupportsVoid : nsISupports
{
/*
* This would be: "[noscript] attribute voidStar data;" but for...
* http://bugzilla.mozilla.org/show_bug.cgi?id=11454
*/
[noscript] void GetData([shared,retval] out voidStar aData);
[noscript] void SetData(in voidStar aData);
string toString();
};
/////////////////////////////////////////////////////////////////////////
%{C++
// {ACF8DC40-4A25-11d3-9890-006008962422}
#define NS_SUPPORTS_ID_CID \
{ 0xacf8dc40, 0x4a25, 0x11d3, \
{ 0x98, 0x90, 0x0, 0x60, 0x8, 0x96, 0x24, 0x22 } }
#define NS_SUPPORTS_ID_PROGID "component://netscape/supports-id"
#define NS_SUPPORTS_ID_CLASSNAME "Supports ID"
// {ACF8DC41-4A25-11d3-9890-006008962422}
#define NS_SUPPORTS_STRING_CID \
{ 0xacf8dc41, 0x4a25, 0x11d3, \
{ 0x98, 0x90, 0x0, 0x60, 0x8, 0x96, 0x24, 0x22 } }
#define NS_SUPPORTS_STRING_PROGID "component://netscape/supports-string"
#define NS_SUPPORTS_STRING_CLASSNAME "Supports String"
// {ACF8DC42-4A25-11d3-9890-006008962422}
#define NS_SUPPORTS_WSTRING_CID \
{ 0xacf8dc42, 0x4a25, 0x11d3, \
{ 0x98, 0x90, 0x0, 0x60, 0x8, 0x96, 0x24, 0x22 } }
#define NS_SUPPORTS_WSTRING_PROGID "component://netscape/supports-wstring"
#define NS_SUPPORTS_WSTRING_CLASSNAME "Supports WString"
// {ACF8DC43-4A25-11d3-9890-006008962422}
#define NS_SUPPORTS_PRBOOL_CID \
{ 0xacf8dc43, 0x4a25, 0x11d3, \
{ 0x98, 0x90, 0x0, 0x60, 0x8, 0x96, 0x24, 0x22 } }
#define NS_SUPPORTS_PRBOOL_PROGID "component://netscape/supports-PRBool"
#define NS_SUPPORTS_PRBOOL_CLASSNAME "Supports PRBool"
// {ACF8DC44-4A25-11d3-9890-006008962422}
#define NS_SUPPORTS_PRUINT8_CID \
{ 0xacf8dc44, 0x4a25, 0x11d3, \
{ 0x98, 0x90, 0x0, 0x60, 0x8, 0x96, 0x24, 0x22 } }
#define NS_SUPPORTS_PRUINT8_PROGID "component://netscape/supports-PRUint8"
#define NS_SUPPORTS_PRUINT8_CLASSNAME "Supports PRUint8"
// {ACF8DC46-4A25-11d3-9890-006008962422}
#define NS_SUPPORTS_PRUINT16_CID \
{ 0xacf8dc46, 0x4a25, 0x11d3, \
{ 0x98, 0x90, 0x0, 0x60, 0x8, 0x96, 0x24, 0x22 } }
#define NS_SUPPORTS_PRUINT16_PROGID "component://netscape/supports-PRUint16"
#define NS_SUPPORTS_PRUINT16_CLASSNAME "Supports PRUint16"
// {ACF8DC47-4A25-11d3-9890-006008962422}
#define NS_SUPPORTS_PRUINT32_CID \
{ 0xacf8dc47, 0x4a25, 0x11d3, \
{ 0x98, 0x90, 0x0, 0x60, 0x8, 0x96, 0x24, 0x22 } }
#define NS_SUPPORTS_PRUINT32_PROGID "component://netscape/supports-PRUint32"
#define NS_SUPPORTS_PRUINT32_CLASSNAME "Supports PRUint32"
// {ACF8DC48-4A25-11d3-9890-006008962422}
#define NS_SUPPORTS_PRUINT64_CID \
{ 0xacf8dc48, 0x4a25, 0x11d3, \
{ 0x98, 0x90, 0x0, 0x60, 0x8, 0x96, 0x24, 0x22 } }
#define NS_SUPPORTS_PRUINT64_PROGID "component://netscape/supports-PRUint64"
#define NS_SUPPORTS_PRUINT64_CLASSNAME "Supports PRUint64"
// {ACF8DC49-4A25-11d3-9890-006008962422}
#define NS_SUPPORTS_PRTIME_CID \
{ 0xacf8dc49, 0x4a25, 0x11d3, \
{ 0x98, 0x90, 0x0, 0x60, 0x8, 0x96, 0x24, 0x22 } }
#define NS_SUPPORTS_PRTIME_PROGID "component://netscape/supports-PRTime"
#define NS_SUPPORTS_PRTIME_CLASSNAME "Supports PRTime"
// {ACF8DC4A-4A25-11d3-9890-006008962422}
#define NS_SUPPORTS_CHAR_CID \
{ 0xacf8dc4a, 0x4a25, 0x11d3, \
{ 0x98, 0x90, 0x0, 0x60, 0x8, 0x96, 0x24, 0x22 } }
#define NS_SUPPORTS_CHAR_PROGID "component://netscape/supports-char"
#define NS_SUPPORTS_CHAR_CLASSNAME "Supports Char"
// {ACF8DC4B-4A25-11d3-9890-006008962422}
#define NS_SUPPORTS_PRINT16_CID \
{ 0xacf8dc4b, 0x4a25, 0x11d3, \
{ 0x98, 0x90, 0x0, 0x60, 0x8, 0x96, 0x24, 0x22 } }
#define NS_SUPPORTS_PRINT16_PROGID "component://netscape/supports-PRInt16"
#define NS_SUPPORTS_PRINT16_CLASSNAME "Supports PRInt16"
// {ACF8DC4C-4A25-11d3-9890-006008962422}
#define NS_SUPPORTS_PRINT32_CID \
{ 0xacf8dc4c, 0x4a25, 0x11d3, \
{ 0x98, 0x90, 0x0, 0x60, 0x8, 0x96, 0x24, 0x22 } }
#define NS_SUPPORTS_PRINT32_PROGID "component://netscape/supports-PRInt32"
#define NS_SUPPORTS_PRINT32_CLASSNAME "Supports PRInt32"
// {ACF8DC4D-4A25-11d3-9890-006008962422}
#define NS_SUPPORTS_PRINT64_CID \
{ 0xacf8dc4d, 0x4a25, 0x11d3, \
{ 0x98, 0x90, 0x0, 0x60, 0x8, 0x96, 0x24, 0x22 } }
#define NS_SUPPORTS_PRINT64_PROGID "component://netscape/supports-PRInt64"
#define NS_SUPPORTS_PRINT64_CLASSNAME "Supports PRInt64"
// {CBF86870-4AC0-11d3-BAEA-00805F8A5DD7}
#define NS_SUPPORTS_FLOAT_CID \
{ 0xcbf86870, 0x4ac0, 0x11d3, \
{ 0xba, 0xea, 0x0, 0x80, 0x5f, 0x8a, 0x5d, 0xd7 } }
#define NS_SUPPORTS_FLOAT_PROGID "component://netscape/supports-float"
#define NS_SUPPORTS_FLOAT_CLASSNAME "Supports float"
// {CBF86871-4AC0-11d3-BAEA-00805F8A5DD7}
#define NS_SUPPORTS_DOUBLE_CID \
{ 0xcbf86871, 0x4ac0, 0x11d3, \
{ 0xba, 0xea, 0x0, 0x80, 0x5f, 0x8a, 0x5d, 0xd7 } }
#define NS_SUPPORTS_DOUBLE_PROGID "component://netscape/supports-double"
#define NS_SUPPORTS_DOUBLE_CLASSNAME "Supports double"
// {AF10F3E0-568D-11d3-BAF8-00805F8A5DD7}
#define NS_SUPPORTS_VOID_CID \
{ 0xaf10f3e0, 0x568d, 0x11d3, \
{ 0xba, 0xf8, 0x0, 0x80, 0x5f, 0x8a, 0x5d, 0xd7 } }
#define NS_SUPPORTS_VOID_PROGID "component://netscape/supports-void"
#define NS_SUPPORTS_VOID_CLASSNAME "Supports void"
%}

View File

@@ -1,57 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsIUnicharBuffer_h___
#define nsIUnicharBuffer_h___
#include "nscore.h"
#include "nsISupports.h"
class nsIUnicharInputStream;
#define NS_IUNICHARBUFFER_IID \
{ 0x14cf6970, 0x93b5, 0x11d1, \
{0x89, 0x5b, 0x00, 0x60, 0x08, 0x91, 0x1b, 0x81} }
/// Interface to a buffer that holds unicode characters
class nsIUnicharBuffer : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IUNICHARBUFFER_IID);
NS_IMETHOD Init(PRUint32 aBufferSize) = 0;
NS_IMETHOD_(PRInt32) GetLength() const = 0;
NS_IMETHOD_(PRInt32) GetBufferSize() const = 0;
NS_IMETHOD_(PRUnichar*) GetBuffer() const = 0;
NS_IMETHOD_(PRBool) Grow(PRInt32 aNewSize) = 0;
NS_IMETHOD_(PRInt32) Fill(nsresult* aErrorCode, nsIUnicharInputStream* aStream,
PRInt32 aKeep) = 0;
};
/// Factory method for nsIUnicharBuffer.
extern NS_COM nsresult
NS_NewUnicharBuffer(nsIUnicharBuffer** aInstancePtrResult,
nsISupports* aOuter,
PRUint32 aBufferSize = 0);
#define NS_UNICHARBUFFER_CID \
{ /* c81fd8f0-0d6b-11d3-9331-00104ba0fd40 */ \
0xc81fd8f0, \
0x0d6b, \
0x11d3, \
{0x93, 0x31, 0x00, 0x10, 0x4b, 0xa0, 0xfd, 0x40} \
}
#endif /* nsIUnicharBuffer_h___ */

View File

@@ -1,340 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsInt64_h__
#define nsInt64_h__
#include "prlong.h"
#include "nscore.h"
/**
* This class encapsulates full 64-bit integer functionality and
* provides simple arithmetic and conversion operations.
*/
// If you ever decide that you need to add a non-inline method to this
// class, be sure to change the class declaration to "class NS_BASE
// nsInt64".
class nsInt64
{
private:
PRInt64 mValue;
public:
/**
* Construct a new 64-bit integer.
*/
nsInt64(void) : mValue(LL_ZERO) {
}
/**
* Construct a new 64-bit integer from a 32-bit signed integer
*/
nsInt64(const PRInt32 aInt32) {
LL_I2L(mValue, aInt32);
}
/**
* Construct a new 64-bit integer from a 32-bit unsigned integer
*/
nsInt64(const PRUint32 aUint32) {
LL_UI2L(mValue, aUint32);
}
/**
* Construct a new 64-bit integer from a floating point value.
*/
nsInt64(const PRFloat64 aFloat64) {
LL_D2L(mValue, aFloat64);
}
/**
* Construct a new 64-bit integer from a native 64-bit integer
*/
nsInt64(const PRInt64 aInt64) : mValue(aInt64) {
}
/**
* Construct a new 64-bit integer from another 64-bit integer
*/
nsInt64(const nsInt64& aObject) : mValue(aObject.mValue) {
}
// ~nsInt64(void) -- XXX destructor unnecessary
/**
* Assign a 64-bit integer to another 64-bit integer
*/
const nsInt64& operator =(const nsInt64& aObject) {
mValue = aObject.mValue;
return *this;
}
/**
* Convert a 64-bit integer to a signed 32-bit value
*/
operator PRInt32(void) const {
PRInt32 result;
LL_L2I(result, mValue);
return result;
}
/**
* Convert a 64-bit integer to an unsigned 32-bit value
*/
operator PRUint32(void) const {
PRUint32 result;
LL_L2UI(result, mValue);
return result;
}
/**
* Convert a 64-bit integer to a floating point value
*/
operator PRFloat64(void) const {
PRFloat64 result;
LL_L2D(result, mValue);
return result;
}
/**
* Convert a 64-bit integer to a native 64-bit integer.
*/
operator PRInt64(void) const {
return mValue;
}
/**
* Perform unary negation on a 64-bit integer.
*/
const nsInt64 operator -(void) {
nsInt64 result;
LL_NEG(result.mValue, mValue);
return result;
}
// Arithmetic operators
friend const nsInt64 operator +(const nsInt64& aObject1, const nsInt64& aObject2);
friend const nsInt64 operator -(const nsInt64& aObject1, const nsInt64& aObject2);
friend const nsInt64 operator *(const nsInt64& aObject1, const nsInt64& aObject2);
friend const nsInt64 operator /(const nsInt64& aObject1, const nsInt64& aObject2);
friend const nsInt64 operator %(const nsInt64& aObject1, const nsInt64& aObject2);
/**
* Increment a 64-bit integer by a 64-bit integer amount.
*/
nsInt64& operator +=(const nsInt64& aObject) {
LL_ADD(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Decrement a 64-bit integer by a 64-bit integer amount.
*/
nsInt64& operator -=(const nsInt64& aObject) {
LL_SUB(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Multiply a 64-bit integer by a 64-bit integer amount.
*/
nsInt64& operator *=(const nsInt64& aObject) {
LL_MUL(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Divide a 64-bit integer by a 64-bit integer amount.
*/
nsInt64& operator /=(const nsInt64& aObject) {
LL_DIV(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Compute the modulus of a 64-bit integer to a 64-bit value.
*/
nsInt64& operator %=(const nsInt64& aObject) {
LL_MOD(mValue, mValue, aObject.mValue);
return *this;
}
// Comparison operators
friend PRBool operator ==(const nsInt64& aObject1, const nsInt64& aObject2);
friend PRBool operator !=(const nsInt64& aObject1, const nsInt64& aObject2);
friend PRBool operator >(const nsInt64& aObject1, const nsInt64& aObject2);
friend PRBool operator >=(const nsInt64& aObject1, const nsInt64& aObject2);
friend PRBool operator <(const nsInt64& aObject1, const nsInt64& aObject2);
friend PRBool operator <=(const nsInt64& aObject1, const nsInt64& aObject2);
// Bitwise operators
friend const nsInt64 operator &(const nsInt64& aObject1, const nsInt64& aObject2);
friend const nsInt64 operator |(const nsInt64& aObject1, const nsInt64& aObject2);
friend const nsInt64 operator ^(const nsInt64& aObject1, const nsInt64& aObject2);
/**
* Compute the bitwise NOT of a 64-bit integer
*/
const nsInt64 operator ~(void) {
nsInt64 result;
LL_NOT(result.mValue, mValue);
return result;
}
/**
* Compute the bitwise AND with another 64-bit integer
*/
nsInt64& operator &=(const nsInt64& aObject) {
LL_AND(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Compute the bitwise OR with another 64-bit integer
*/
nsInt64& operator |=(const nsInt64& aObject) {
LL_OR(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Compute the bitwise XOR with another 64-bit integer
*/
nsInt64& operator ^=(const nsInt64& aObject) {
LL_XOR(mValue, mValue, aObject.mValue);
return *this;
}
};
/**
* Add two 64-bit integers.
*/
inline const nsInt64
operator +(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) += aObject2;
}
/**
* Subtract one 64-bit integer from another.
*/
inline const nsInt64
operator -(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) -= aObject2;
}
/**
* Multiply two 64-bit integers
*/
inline const nsInt64
operator *(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) *= aObject2;
}
/**
* Divide one 64-bit integer by another
*/
inline const nsInt64
operator /(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) /= aObject2;
}
/**
* Compute the modulus of two 64-bit integers
*/
inline const nsInt64
operator %(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) %= aObject2;
}
/**
* Determine if two 64-bit integers are equal
*/
inline PRBool
operator ==(const nsInt64& aObject1, const nsInt64& aObject2) {
return LL_EQ(aObject1.mValue, aObject2.mValue);
}
/**
* Determine if two 64-bit integers are not equal
*/
inline PRBool
operator !=(const nsInt64& aObject1, const nsInt64& aObject2) {
return LL_NE(aObject1.mValue, aObject2.mValue);
}
/**
* Determine if one 64-bit integer is strictly greater than another, using signed values
*/
inline PRBool
operator >(const nsInt64& aObject1, const nsInt64& aObject2) {
return LL_CMP(aObject1.mValue, >, aObject2.mValue);
}
/**
* Determine if one 64-bit integer is greater than or equal to another, using signed values
*/
inline PRBool
operator >=(const nsInt64& aObject1, const nsInt64& aObject2) {
return LL_CMP(aObject1.mValue, >=, aObject2.mValue);
}
/**
* Determine if one 64-bit integer is strictly less than another, using signed values
*/
inline PRBool
operator <(const nsInt64& aObject1, const nsInt64& aObject2) {
return LL_CMP(aObject1.mValue, <, aObject2.mValue);
}
/**
* Determine if one 64-bit integers is less than or equal to another, using signed values
*/
inline PRBool
operator <=(const nsInt64& aObject1, const nsInt64& aObject2) {
return LL_CMP(aObject1.mValue, <=, aObject2.mValue);
}
/**
* Perform a bitwise AND of two 64-bit integers
*/
inline const nsInt64
operator &(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) &= aObject2;
}
/**
* Perform a bitwise OR of two 64-bit integers
*/
inline const nsInt64
operator |(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) |= aObject2;
}
/**
* Perform a bitwise XOR of two 64-bit integers
*/
inline const nsInt64
operator ^(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) ^= aObject2;
}
#endif // nsInt64_h__

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@@ -1,92 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#define NS_IMPL_IDS
#include "pratom.h"
#include "nsIFactory.h"
#include "nsIServiceManager.h"
#include "nsRepository.h"
#include "nsIObserver.h"
#include "nsObserver.h"
#include "nsString.h"
static NS_DEFINE_CID(kObserverCID, NS_OBSERVER_CID);
////////////////////////////////////////////////////////////////////////////////
// nsObserver Implementation
NS_IMPL_AGGREGATED(nsObserver)
NS_COM nsresult NS_NewObserver(nsIObserver** anObserver, nsISupports* outer)
{
return nsObserver::Create(outer, NS_GET_IID(nsIObserver), (void**)anObserver);
}
NS_METHOD
nsObserver::Create(nsISupports* outer, const nsIID& aIID, void* *anObserver)
{
NS_ENSURE_ARG_POINTER(anObserver);
NS_ENSURE_PROPER_AGGREGATION(outer, aIID);
nsObserver* it = new nsObserver(outer);
if (it == NULL)
return NS_ERROR_OUT_OF_MEMORY;
nsresult rv = it->AggregatedQueryInterface(aIID, anObserver);
if (NS_FAILED(rv)) {
delete it;
return rv;
}
return rv;
}
nsObserver::nsObserver(nsISupports* outer)
{
NS_INIT_AGGREGATED(outer);
}
nsObserver::~nsObserver(void)
{
}
NS_IMETHODIMP
nsObserver::AggregatedQueryInterface(const nsIID& aIID, void** aInstancePtr)
{
NS_ENSURE_ARG_POINTER(aInstancePtr);
if (aIID.Equals(nsCOMTypeInfo<nsISupports>::GetIID()))
*aInstancePtr = GetInner();
else if(aIID.Equals(nsIObserver::GetIID()))
*aInstancePtr = NS_STATIC_CAST(nsIObserver*, this);
else {
*aInstancePtr = nsnull;
return NS_NOINTERFACE;
}
NS_ADDREF((nsISupports*)*aInstancePtr);
return NS_OK;
}
NS_IMETHODIMP
nsObserver::Observe( nsISupports *, const PRUnichar *, const PRUnichar * ) {
nsresult rv = NS_OK;
return rv;
}
////////////////////////////////////////////////////////////////////////////////

View File

@@ -1,50 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsObserver_h___
#define nsObserver_h___
#include "nsIObserver.h"
#include "nsAgg.h"
// {DB242E03-E4D9-11d2-9DDE-000064657374}
#define NS_OBSERVER_CID \
{ 0xdb242e03, 0xe4d9, 0x11d2, { 0x9d, 0xde, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74 } }
class nsObserver : public nsIObserver {
public:
NS_DEFINE_STATIC_CID_ACCESSOR( NS_OBSERVER_CID )
NS_DECL_NSIOBSERVER
nsObserver(nsISupports* outer);
virtual ~nsObserver(void);
static NS_METHOD
Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);
NS_DECL_AGGREGATED
private:
};
extern NS_COM nsresult NS_NewObserver(nsIObserver** anObserver, nsISupports* outer = NULL);
#endif /* nsObserver_h___ */

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@@ -1,133 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#define NS_IMPL_IDS
#include "pratom.h"
#include "nsIObserverList.h"
#include "nsObserverList.h"
#include "nsString.h"
#include "nsAutoLock.h"
#define NS_AUTOLOCK(__monitor) nsAutoLock __lock(__monitor)
static NS_DEFINE_CID(kObserverListCID, NS_OBSERVERLIST_CID);
////////////////////////////////////////////////////////////////////////////////
// nsObserverList Implementation
NS_IMPL_ISUPPORTS1(nsObserverList, nsIObserverList)
NS_COM nsresult NS_NewObserverList(nsIObserverList** anObserverList)
{
if (anObserverList == NULL)
{
return NS_ERROR_NULL_POINTER;
}
nsObserverList* it = new nsObserverList();
if (it == 0) {
return NS_ERROR_OUT_OF_MEMORY;
}
return it->QueryInterface(NS_GET_IID(nsIObserverList), (void **) anObserverList);
}
nsObserverList::nsObserverList()
: mLock(nsnull),
mObserverList(NULL)
{
NS_INIT_REFCNT();
mLock = PR_NewLock();
}
nsObserverList::~nsObserverList(void)
{
PR_DestroyLock(mLock);
NS_IF_RELEASE(mObserverList);
}
nsresult nsObserverList::AddObserver(nsIObserver** anObserver)
{
nsresult rv;
PRBool inserted;
NS_AUTOLOCK(mLock);
if (anObserver == NULL)
{
return NS_ERROR_NULL_POINTER;
}
if(!mObserverList) {
rv = NS_NewISupportsArray(&mObserverList);
if (NS_FAILED(rv)) return rv;
}
if(*anObserver) {
inserted = mObserverList->AppendElement(*anObserver);
return inserted ? NS_OK : NS_ERROR_FAILURE;
}
return NS_ERROR_FAILURE;
}
nsresult nsObserverList::RemoveObserver(nsIObserver** anObserver)
{
PRBool removed;
NS_AUTOLOCK(mLock);
if (anObserver == NULL)
{
return NS_ERROR_NULL_POINTER;
}
if(!mObserverList) {
return NS_ERROR_FAILURE;
}
if(*anObserver) {
removed = mObserverList->RemoveElement(*anObserver);
return removed ? NS_OK : NS_ERROR_FAILURE;
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP nsObserverList::EnumerateObserverList(nsIEnumerator** anEnumerator)
{
NS_AUTOLOCK(mLock);
if (anEnumerator == NULL)
{
return NS_ERROR_NULL_POINTER;
}
if(!mObserverList) {
return NS_ERROR_FAILURE;
}
return mObserverList->Enumerate(anEnumerator);
}

View File

@@ -1,51 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsObserverList_h___
#define nsObserverList_h___
#include "nsIObserverList.h"
#include "nsIEnumerator.h"
#include "nsISupportsArray.h"
class nsObserverList : public nsIObserverList {
public:
NS_IMETHOD AddObserver(nsIObserver** anObserver);
NS_IMETHOD RemoveObserver(nsIObserver** anObserver);
NS_IMETHOD EnumerateObserverList(nsIEnumerator** anEnumerator);
nsObserverList();
virtual ~nsObserverList(void);
// This is ObserverList monitor object.
PRLock* mLock;
NS_DECL_ISUPPORTS
private:
nsISupportsArray *mObserverList;
};
#endif /* nsObserverList_h___ */

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@@ -1,249 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#define NS_IMPL_IDS
#include "prlock.h"
#include "nsIFactory.h"
#include "nsIServiceManager.h"
#include "nsRepository.h"
#include "nsIObserverService.h"
#include "nsObserverService.h"
#include "nsIObserverList.h"
#include "nsObserverList.h"
#include "nsHashtable.h"
#include "nsString.h"
static NS_DEFINE_CID(kObserverServiceCID, NS_OBSERVERSERVICE_CID);
////////////////////////////////////////////////////////////////////////////////
static nsObserverService* gObserverService = nsnull; // The one-and-only ObserverService
////////////////////////////////////////////////////////////////////////////////
// nsObserverService Implementation
NS_IMPL_ISUPPORTS1(nsObserverService, nsIObserverService)
NS_COM nsresult NS_NewObserverService(nsIObserverService** anObserverService)
{
return nsObserverService::GetObserverService(anObserverService);
}
nsObserverService::nsObserverService()
: mObserverTopicTable(NULL)
{
NS_INIT_REFCNT();
mObserverTopicTable = nsnull;
}
nsObserverService::~nsObserverService(void)
{
if(mObserverTopicTable)
delete mObserverTopicTable;
gObserverService = nsnull;
}
NS_METHOD
nsObserverService::Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr)
{
nsresult rv;
nsObserverService* os = new nsObserverService();
if (os == NULL)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(os);
rv = os->QueryInterface(aIID, aInstancePtr);
NS_RELEASE(os);
return rv;
}
nsresult nsObserverService::GetObserverService(nsIObserverService** anObserverService)
{
if (! gObserverService) {
nsObserverService* it = new nsObserverService();
if (! it)
return NS_ERROR_OUT_OF_MEMORY;
gObserverService = it;
}
NS_ADDREF(gObserverService);
*anObserverService = gObserverService;
return NS_OK;
}
static PRBool
ReleaseObserverList(nsHashKey *aKey, void *aData, void* closure)
{
nsIObserverList* observerList = NS_STATIC_CAST(nsIObserverList*, aData);
NS_RELEASE(observerList);
return PR_TRUE;
}
nsresult nsObserverService::GetObserverList(const nsString& aTopic, nsIObserverList** anObserverList)
{
if (anObserverList == NULL)
{
return NS_ERROR_NULL_POINTER;
}
if(mObserverTopicTable == NULL) {
mObserverTopicTable = new nsObjectHashtable(nsnull, nsnull, // should never be cloned
ReleaseObserverList, nsnull,
256, PR_TRUE);
if (mObserverTopicTable == NULL)
return NS_ERROR_OUT_OF_MEMORY;
}
nsStringKey key(aTopic);
nsIObserverList *topicObservers = nsnull;
if (mObserverTopicTable->Exists(&key)) {
topicObservers = (nsIObserverList *) mObserverTopicTable->Get(&key);
if (topicObservers != NULL) {
*anObserverList = topicObservers;
} else {
NS_NewObserverList(&topicObservers);
mObserverTopicTable->Put(&key, topicObservers);
}
} else {
NS_NewObserverList(&topicObservers);
*anObserverList = topicObservers;
mObserverTopicTable->Put(&key, topicObservers);
}
return NS_OK;
}
nsresult nsObserverService::AddObserver(nsIObserver* anObserver, const PRUnichar* aTopic)
{
nsIObserverList* anObserverList;
nsresult rv;
if (anObserver == NULL)
{
return NS_ERROR_NULL_POINTER;
}
if (aTopic == NULL)
{
return NS_ERROR_NULL_POINTER;
}
nsAutoString topic(aTopic);
rv = GetObserverList(topic, &anObserverList);
if (NS_FAILED(rv)) return rv;
if (anObserverList) {
return anObserverList->AddObserver(&anObserver);
}
return NS_ERROR_FAILURE;
}
nsresult nsObserverService::RemoveObserver(nsIObserver* anObserver, const PRUnichar* aTopic)
{
nsIObserverList* anObserverList;
nsresult rv;
if (anObserver == NULL)
{
return NS_ERROR_NULL_POINTER;
}
if (aTopic == NULL)
{
return NS_ERROR_NULL_POINTER;
}
nsAutoString topic(aTopic);
rv = GetObserverList(topic, &anObserverList);
if (NS_FAILED(rv)) return rv;
if (anObserverList) {
return anObserverList->RemoveObserver(&anObserver);
}
return NS_ERROR_FAILURE;
}
nsresult nsObserverService::EnumerateObserverList(const PRUnichar* aTopic, nsIEnumerator** anEnumerator)
{
nsIObserverList* anObserverList;
nsresult rv;
if (anEnumerator == NULL)
{
return NS_ERROR_NULL_POINTER;
}
if (aTopic == NULL)
{
return NS_ERROR_NULL_POINTER;
}
nsAutoString topic(aTopic);
rv = GetObserverList(topic, &anObserverList);
if (NS_FAILED(rv)) return rv;
if (anObserverList) {
return anObserverList->EnumerateObserverList(anEnumerator);
}
return NS_ERROR_FAILURE;
}
// Enumerate observers of aTopic and call Observe on each.
nsresult nsObserverService::Notify( nsISupports *aSubject,
const PRUnichar *aTopic,
const PRUnichar *someData ) {
nsresult rv = NS_OK;
nsIEnumerator *observers;
// Get observer list enumerator.
rv = this->EnumerateObserverList( aTopic, &observers );
if ( NS_SUCCEEDED( rv ) ) {
// Go to start of observer list.
rv = observers->First();
// Continue until error or end of list.
while ( observers->IsDone() != NS_OK && NS_SUCCEEDED(rv) ) {
// Get current item (observer).
nsISupports *base;
rv = observers->CurrentItem( &base );
if ( NS_SUCCEEDED( rv ) ) {
// Convert item to nsIObserver.
nsIObserver *observer;
rv = base->QueryInterface( nsIObserver::GetIID(), (void**)&observer );
if ( NS_SUCCEEDED( rv ) && observer ) {
// Tell the observer what's up.
observer->Observe( aSubject, aTopic, someData );
// Release the observer.
observer->Release();
}
}
// Go on to next observer in list.
rv = observers->Next();
}
// Release the observer list.
observers->Release();
rv = NS_OK;
}
return rv;
}
////////////////////////////////////////////////////////////////////////////////

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@@ -1,56 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsObserverService_h___
#define nsObserverService_h___
#include "nsIObserverService.h"
#include "nsIObserverList.h"
class nsObjectHashtable;
class nsString;
// {D07F5195-E3D1-11d2-8ACD-00105A1B8860}
#define NS_OBSERVERSERVICE_CID \
{ 0xd07f5195, 0xe3d1, 0x11d2, { 0x8a, 0xcd, 0x0, 0x10, 0x5a, 0x1b, 0x88, 0x60 } }
class nsObserverService : public nsIObserverService {
public:
NS_DEFINE_STATIC_CID_ACCESSOR( NS_OBSERVERSERVICE_CID )
static nsresult GetObserverService(nsIObserverService** anObserverService);
NS_DECL_NSIOBSERVERSERVICE
nsObserverService();
virtual ~nsObserverService(void);
NS_DECL_ISUPPORTS
static NS_METHOD
Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);
private:
NS_IMETHOD GetObserverList(const nsString& aTopic, nsIObserverList** anObserverList);
nsObjectHashtable* mObserverTopicTable;
};
#endif /* nsObserverService_h___ */

View File

@@ -1,914 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsPageMgr.h"
#include "prmem.h"
#if defined(XP_PC)
#include <windows.h>
#elif defined(XP_MAC)
#include <stdlib.h>
#elif defined(XP_BEOS)
#include <fcntl.h>
#elif defined(XP_UNIX)
#include <sys/mman.h>
#include <fcntl.h>
#include <unistd.h>
#include <malloc.h>
#ifndef MAP_FAILED
#if defined (__STDC__) && __STDC__
#define MAP_FAILED ((void *) -1)
#else
#define MAP_FAILED ((char *) -1)
#endif
#endif
#if defined(VMS)
#if defined(DEBUG)
#include <stdio.h>
#endif
#include <starlet.h>
#include <ssdef.h>
#include <vadef.h>
#include <va_rangedef.h>
#endif
#endif
/******************************************************************************/
#define NS_PAGEMGR_CLUSTERDESC_CLUMPSIZE 16
void
nsPageMgr::DeleteFreeClusterDesc(nsClusterDesc *desc)
{
desc->mNext = mUnusedClusterDescs;
mUnusedClusterDescs = desc;
}
nsPageMgr::nsClusterDesc*
nsPageMgr::NewFreeClusterDesc(void)
{
nsClusterDesc *desc = mUnusedClusterDescs;
if (desc)
mUnusedClusterDescs = desc->mNext;
else {
/* Allocate a clump of cluster records at once, and link all except
the first onto the list of mUnusedClusterDescs */
desc = (nsClusterDesc*)PR_Malloc(NS_PAGEMGR_CLUSTERDESC_CLUMPSIZE * sizeof(nsClusterDesc));
if (desc) {
nsClusterDesc* desc2 = desc + (NS_PAGEMGR_CLUSTERDESC_CLUMPSIZE - 1);
while (desc2 != desc) {
DeleteFreeClusterDesc(desc2--);
}
}
}
return desc;
}
/* Search the mFreeClusters looking for the first cluster of consecutive free
pages that is at least size bytes long. If there is one, remove these pages
from the free page list and return their address; if not, return nil. */
nsPage*
nsPageMgr::AllocClusterFromFreeList(PRUword nPages)
{
nsClusterDesc **p = &mFreeClusters;
nsClusterDesc *desc;
while ((desc = *p) != NULL) {
if (desc->mPageCount >= nPages) {
nsPage* addr = desc->mAddr;
if (desc->mPageCount == nPages) {
*p = desc->mNext;
DeleteFreeClusterDesc(desc);
}
else {
desc->mAddr += nPages;
desc->mPageCount -= nPages;
}
return addr;
}
p = &desc->mNext;
}
return NULL;
}
/* Add the segment to the nsClusterDesc list, coalescing it with any
clusters already in the list when possible. */
void
nsPageMgr::AddClusterToFreeList(nsPage* addr, PRWord nPages)
{
nsClusterDesc **p = &mFreeClusters;
nsClusterDesc *desc;
nsClusterDesc *newDesc;
while ((desc = *p) != NULL) {
if (desc->mAddr + desc->mPageCount == addr) {
/* Coalesce with the previous cluster. */
nsClusterDesc *next = desc->mNext;
desc->mPageCount += nPages;
if (next && next->mAddr == addr + nPages) {
/* We can coalesce with both the previous and the next cluster. */
desc->mPageCount += next->mPageCount;
desc->mNext = next->mNext;
DeleteFreeClusterDesc(next);
}
return;
}
if (desc->mAddr == addr + nPages) {
/* Coalesce with the next cluster. */
desc->mAddr -= nPages;
desc->mPageCount += nPages;
return;
}
if (desc->mAddr > addr) {
PR_ASSERT(desc->mAddr > addr + nPages);
break;
}
PR_ASSERT(desc->mAddr + desc->mPageCount < addr);
p = &desc->mNext;
}
newDesc = NewFreeClusterDesc();
/* In the unlikely event that this malloc fails, we drop the free cluster
on the floor. The only consequence is that the memory mapping table
becomes slightly larger. */
if (newDesc) {
newDesc->mNext = desc;
newDesc->mAddr = addr;
newDesc->mPageCount = nPages;
*p = newDesc;
}
}
#ifdef NS_PAGEMGR_VERIFYCLUSTERS
#ifndef XP_PC
#define OutputDebugString(x) puts(x)
#endif
void
nsPageMgr::VerifyClusters(PRWord nPagesDelta)
{
static PRUword expectedPagesUsed = 0;
nsPageCount calculatedPagesUsed;
nsPage* lastDescEnd = 0;
nsClusterDesc* desc;
char str[256];
expectedPagesUsed += nPagesDelta;
calculatedPagesUsed = mBoundary - mMemoryBase;
sprintf(str, "[Clusters: %p", mMemoryBase);
OutputDebugString(str);
for (desc = mFreeClusters; desc; desc = desc->mNext) {
PR_ASSERT(desc->mAddr > lastDescEnd);
calculatedPagesUsed -= desc->mPageCount;
lastDescEnd = desc->mAddr + desc->mPageCount;
sprintf(str, "..%p, %p", desc->mAddr-1, desc->mAddr + desc->mPageCount);
OutputDebugString(str);
}
sprintf(str, "..%p]\n", mBoundary);
OutputDebugString(str);
PR_ASSERT(lastDescEnd < mBoundary);
PR_ASSERT(calculatedPagesUsed == expectedPagesUsed);
}
#endif /* NS_PAGEMGR_VERIFYCLUSTERS */
/*******************************************************************************
* Machine-dependent stuff
******************************************************************************/
#if defined(XP_PC)
#define GC_VMBASE 0x40000000 /* XXX move */
#define GC_VMLIMIT 0x0FFFFFFF
#elif defined(XP_MAC)
#define NS_PAGEMGR_MAC_SEGMENT_SIZE
#define NS_PAGEMGR_MAC_SEGMENT_COUNT
#endif
PRStatus
nsPageMgr::InitPages(nsPageCount minPages, nsPageCount maxPages)
{
#if defined(XP_PC)
nsPage* addr = NULL;
nsPageCount size = maxPages;
#ifdef NS_PAGEMGR_DEBUG
/* first try to place the heap at a well-known address for debugging */
addr = (nsPage*)VirtualAlloc((void*)GC_VMBASE, size << NS_PAGEMGR_PAGE_BITS,
MEM_RESERVE, PAGE_READWRITE);
#endif
while (addr == NULL) {
/* let the system place the heap */
addr = (nsPage*)VirtualAlloc(0, size << NS_PAGEMGR_PAGE_BITS,
MEM_RESERVE, PAGE_READWRITE);
if (addr == NULL) {
size--;
if (size < minPages) {
return PR_FAILURE;
}
}
}
PR_ASSERT(NS_PAGEMGR_IS_ALIGNED(addr, NS_PAGEMGR_PAGE_BITS));
mMemoryBase = addr;
mPageCount = size;
mBoundary = addr;
return PR_SUCCESS;
#elif defined(XP_MAC)
OSErr err;
void* seg;
void* segLimit;
Handle h;
PRUword segSize = (minPages + 1) * NS_PAGEMGR_PAGE_SIZE;
nsPage* firstPage;
nsPage* lastPage;
nsSegmentDesc* mSegTable;
int mSegTableCount, otherCount;
h = TempNewHandle(segSize, &err);
if (err || h == NULL) goto fail;
MoveHHi(h);
TempHLock(h, &err);
if (err) goto fail;
seg = *h;
segLimit = (void*)((char*)seg + segSize);
firstPage = NS_PAGEMGR_PAGE_ROUNDUP(seg);
lastPage = NS_PAGEMGR_PAGE_ROUNDDN(((char*)seg + segSize));
/* Put the segment table in the otherwise wasted space at one
end of the segment. We'll put it at which ever end is bigger. */
mSegTable = (nsSegmentDesc*)seg;
mSegTableCount = ((char*)firstPage - (char*)seg) / sizeof(nsSegmentDesc);
otherCount = ((char*)segLimit - (char*)lastPage) / sizeof(nsSegmentDesc);
if (otherCount > mSegTableCount) {
mSegTable = (nsSegmentDesc*)lastPage;
mSegTableCount = otherCount;
}
else if (mSegTableCount == 0) {
mSegTable = (nsSegmentDesc*)firstPage;
firstPage++;
mSegTableCount = NS_PAGEMGR_PAGE_SIZE / sizeof(nsSegmentDesc);
}
PR_ASSERT(mSegTableCount > 0);
mSegTable = mSegTable;
mSegTableCount = mSegTableCount;
mSegTable[0].mHandle = h;
mSegTable[0].mFirstPage = firstPage;
mSegTable[0].mLastPage = lastPage;
/* XXX hack for now -- just one segment */
mMemoryBase = firstPage;
mBoundary = firstPage;
mPageCount = lastPage - firstPage;
return PR_SUCCESS;
fail:
if (h) {
TempDisposeHandle(h, &err);
}
return PR_FAILURE;
#elif defined(XP_BEOS)
nsPage* addr = NULL;
nsPageCount size = maxPages;
#if (1L<<NS_PAGEMGR_PAGE_BITS) != B_PAGE_SIZE
#error can only work with 4096 byte pages
#endif
while(addr == NULL)
{
/* let the system place the heap */
if((mAid = create_area("MozillaHeap", (void **)&addr, B_ANY_ADDRESS,
size << NS_PAGEMGR_PAGE_BITS, B_NO_LOCK,
B_READ_AREA | B_WRITE_AREA)) < 0)
{
addr = NULL;
size--;
if (size < minPages) {
return PR_FAILURE;
}
}
}
PR_ASSERT(NS_PAGEMGR_IS_ALIGNED(addr, NS_PAGEMGR_PAGE_BITS));
mMemoryBase = addr;
mPageCount = size;
mBoundary = addr;
return PR_SUCCESS;
#elif defined(VMS)
nsPage* addr = NULL;
nsPageCount size = maxPages;
struct _va_range retadr, retadr2;
int status;
/*
** The default is 32767 pages. This is quite a lot (the pages are 4k).
** Let's at least make it configurable.
*/
char *tmp;
tmp = getenv("VMS_PAGE_MANAGER_SIZE");
if (tmp)
size=atoi(tmp);
#if defined(DEBUG)
printf("Requested page manager size is %d 4k pages\n",size);
#endif
/*
** $EXPREG will extend the virtual address region by the requested
** number of pages (or pagelets on Alpha). The process must have
** sufficient PGFLQUOTA for the operation, otherwise SS$_EXQUOTA will
** be returned. However, in the case of SS$_EXQUOTA, $EXPREG will have
** grown the region by the largest possible amount. In this case we will
** put back the maximum amount and repeat the $EXPREG requesting half of
** maximum (so as to leave some memory for others), just so long as its
** over our minimum threshold.
*/
status = sys$expreg(size << (NS_PAGEMGR_PAGE_BITS-VA$C_PAGELET_SHIFT_SIZE),
&retadr,0,0);
switch (status) {
case SS$_NORMAL:
break;
case SS$_EXQUOTA:
size = ( (int)retadr.va_range$ps_end_va -
(int)retadr.va_range$ps_start_va + 1
) >> NS_PAGEMGR_PAGE_BITS;
status=sys$deltva(&retadr,&retadr2,0);
size=size/2;
if (size < minPages) {
return PR_FAILURE;
}
status = sys$expreg(
size << (NS_PAGEMGR_PAGE_BITS-VA$C_PAGELET_SHIFT_SIZE),
&retadr,0,0);
if (status != SS$_NORMAL) {
status=sys$deltva(&retadr,&retadr2,0);
return PR_FAILURE;
}
size = ( (int)retadr.va_range$ps_end_va -
(int)retadr.va_range$ps_start_va + 1
) >> NS_PAGEMGR_PAGE_BITS;
break;
default:
return PR_FAILURE;
}
#if defined(DEBUG)
printf("Actual page manager size is %d 4k pages\n",size);
#endif
/* We got at least something */
addr = (nsPage *)retadr.va_range$ps_start_va;
PR_ASSERT(NS_PAGEMGR_IS_ALIGNED(addr, NS_PAGEMGR_PAGE_BITS));
mMemoryBase = addr;
mPageCount = size;
mBoundary = addr;
return PR_SUCCESS;
#else
nsPage* addr = NULL;
nsPageCount size = maxPages;
mZero_fd = 0;
#ifdef HAVE_DEV_ZERO
mZero_fd = open("/dev/zero", O_RDWR);
while (addr == NULL) {
/* let the system place the heap */
addr = (nsPage*)mmap(0, size << NS_PAGEMGR_PAGE_BITS,
PROT_READ | PROT_WRITE,
MAP_PRIVATE,
mZero_fd, 0);
if (addr == (nsPage*)MAP_FAILED) {
addr = NULL;
size--;
if (size < minPages) {
return PR_FAILURE;
}
}
}
#else
#ifdef HAVE_VALLOC
while (addr == NULL) {
addr = (nsPage*)valloc(size << NS_PAGEMGR_PAGE_BITS);
if (NULL == addr) {
size--;
if (size < minPages) {
return PR_FAILURE;
}
}
}
memset(addr, '\0', size << NS_PAGEMGR_PAGE_BITS);
#endif /* HAVE_VALLOC */
#endif /* HAVE_DEV_ZERO */
PR_ASSERT(NS_PAGEMGR_IS_ALIGNED(addr, NS_PAGEMGR_PAGE_BITS));
mMemoryBase = addr;
mPageCount = size;
mBoundary = addr;
return PR_SUCCESS;
#endif
}
void
nsPageMgr::FinalizePages()
{
#if defined(XP_PC)
BOOL ok;
ok = VirtualFree((void*)mMemoryBase, 0, MEM_RELEASE);
PR_ASSERT(ok);
mMemoryBase = NULL;
mPageCount = 0;
nsAutoMonitor::DestroyMonitor(mMonitor);
mMonitor = NULL;
#elif defined(XP_MAC)
OSErr err;
PRUword i;
for (i = 0; i < mSegTableCount; i++) {
if (mSegTable[i].mHandle) {
TempDisposeHandle(mSegTable[i].mHandle, &err);
PR_ASSERT(err == 0);
}
}
#elif defined(XP_BEOS)
delete_area(mAid);
#elif defined(VMS)
struct _va_range retadr, retadr2;
retadr.va_range$ps_start_va = mMemoryBase;
retadr.va_range$ps_end_va = mMemoryBase +
(mPageCount << NS_PAGEMGR_PAGE_BITS) - 1;
sys$deltva(&retadr,&retadr2,0);
#else
#ifdef HAVE_DEV_ZERO
munmap((caddr_t)mMemoryBase, mPageCount << NS_PAGEMGR_PAGE_BITS);
close(mZero_fd);
#else /* HAVE_DEV_ZERO */
#ifdef HAVE_VALLOC
free(mMemoryBase);
#endif /* HAVE_VALLOC */
#endif /* HAVE_DEV_ZERO */
#endif
}
/*******************************************************************************
* Page Manager
******************************************************************************/
nsPageMgr::nsPageMgr()
: mUnusedClusterDescs(nsnull),
mFreeClusters(nsnull),
mInUseClusters(nsnull),
mMonitor(nsnull),
mMemoryBase(nsnull),
mBoundary(nsnull),
#ifdef XP_PC
mLastPageFreed(nsnull),
mLastPageFreedSize(0),
mLastPageTemp(nsnull),
mLastPageTempSize(0),
#ifdef NS_PAGEMGR_DEBUG
mLastPageAllocTries(0),
mLastPageAllocHits(0),
mLastPageFreeTries(0),
mLastPageFreeHits(0),
#endif
#endif
#if defined(XP_MAC)
mSegMap(nsnull),
mSegTable(nsnull),
mSegTableCount(0),
#endif
#if defined(XP_BEOS)
mAid(B_ERROR),
#endif
mPageCount(0)
{
NS_INIT_REFCNT();
}
nsresult
nsPageMgr::Init(nsPageCount minPages, nsPageCount maxPages)
{
PRStatus status;
mMonitor = nsAutoMonitor::NewMonitor("PageMgr");
if (mMonitor == NULL)
return PR_FAILURE;
status = InitPages(minPages, maxPages);
if (status != PR_SUCCESS)
return status;
/* make sure these got set */
PR_ASSERT(mMemoryBase);
PR_ASSERT(mBoundary);
mFreeClusters = NULL;
mInUseClusters = NULL;
return status == PR_SUCCESS ? NS_OK : NS_ERROR_FAILURE;
}
nsPageMgr::~nsPageMgr()
{
#if defined(XP_PC) && defined(NS_PAGEMGR_DEBUG)
if (stderr) {
fprintf(stderr, "Page Manager Cache: alloc hits: %u/%u %u%%, free hits: %u/%u %u%%\n",
mLastPageAllocHits, mLastPageAllocTries,
(mLastPageAllocHits * 100 / mLastPageAllocTries),
mLastPageFreeHits, mLastPageFreeTries,
(mLastPageFreeHits * 100 / mLastPageFreeTries));
}
#endif
FinalizePages();
nsClusterDesc* chain = mUnusedClusterDescs;
while (chain) {
nsClusterDesc* desc = chain;
chain = chain->mNext;
PR_Free(desc);
}
}
NS_METHOD
nsPageMgr::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
{
if (aOuter)
return NS_ERROR_NO_AGGREGATION;
nsPageMgr* pageMgr = new nsPageMgr();
if (pageMgr == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(pageMgr);
nsresult rv = pageMgr->Init();
if (NS_FAILED(rv)) {
NS_RELEASE(pageMgr);
return rv;
}
rv = pageMgr->QueryInterface(aIID, aResult);
NS_RELEASE(pageMgr);
return NS_OK;
}
NS_IMPL_ISUPPORTS2(nsPageMgr, nsIPageManager, nsIAllocator)
/******************************************************************************/
#ifdef XP_PC
#ifdef NS_PAGEMGR_PAGE_HYSTERESIS
#ifdef NS_PAGEMGR_DEBUG
void*
nsPageMgr::NS_PAGEMGR_COMMIT_CLUSTER(void* addr, PRUword size)
{
mLastPageAllocTries++;
if (mLastPageFreed == (void*)(addr) && mLastPageFreedSize == (size)) {
#ifdef NS_PAGEMGR_COMMIT_TRACE
char buf[64];
PR_snprintf(buf, sizeof(buf), "lalloc %p %u\n",
mLastPageFreed, mLastPageFreedSize);
OutputDebugString(buf);
#endif
DBG_MEMSET(mLastPageFreed, NS_PAGEMGR_PAGE_ALLOC_PATTERN, mLastPageFreedSize);
mLastPageTemp = mLastPageFreed;
mLastPageFreed = NULL;
mLastPageFreedSize = 0;
mLastPageAllocHits++;
return mLastPageTemp;
}
else {
/* If the cached pages intersect the current request, we lose.
Just free the cached request instead of trying to split it up. */
if (mLastPageFreed &&
nsOverlapping((char*)mLastPageFreed, ((char*)mLastPageFreed + mLastPageFreedSize),
(char*)(addr), ((char*)(addr) + (size)))
// ((char*)mLastPageFreed < ((char*)(addr) + (size))
// && ((char*)mLastPageFreed + mLastPageFreedSize) > (char*)(addr))
) {
#ifdef NS_PAGEMGR_COMMIT_TRACE
char buf[64];
PR_snprintf(buf, sizeof(buf), "valloc %p %u (vfree %p %u last=%u:%u req=%u:%u)\n",
addr, size,
mLastPageFreed, mLastPageFreedSize,
(char*)mLastPageFreed, ((char*)mLastPageFreed + mLastPageFreedSize),
(char*)(addr), ((char*)(addr) + (size)));
OutputDebugString(buf);
#endif
VirtualFree(mLastPageFreed, mLastPageFreedSize, MEM_DECOMMIT);
mLastPageFreed = NULL;
mLastPageFreedSize = 0;
mLastPageFreeHits--; /* lost after all */
}
else {
#ifdef NS_PAGEMGR_COMMIT_TRACE
char buf[64];
PR_snprintf(buf, sizeof(buf), "valloc %p %u (skipping %p %u)\n",
addr, size,
mLastPageFreed, mLastPageFreedSize);
OutputDebugString(buf);
#endif
}
return VirtualAlloc((void*)(addr), (size), MEM_COMMIT, PAGE_READWRITE);
}
}
int
nsPageMgr::NS_PAGEMGR_DECOMMIT_CLUSTER(void* addr, PRUword size)
{
mLastPageFreeTries++;
PR_ASSERT(mLastPageFreed != (void*)(addr));
if (mLastPageFreed) {
/* If we've already got a cached page, just keep it. Heuristically,
this tends to give us a higher hit rate because of the order in
which pages are decommitted. */
#ifdef NS_PAGEMGR_COMMIT_TRACE
char buf[64];
PR_snprintf(buf, sizeof(buf), "vfree %p %u (cached %p %u)\n",
addr, size, mLastPageFreed, mLastPageFreedSize);
OutputDebugString(buf);
#endif
return VirtualFree(addr, size, MEM_DECOMMIT);
}
mLastPageFreed = (void*)(addr);
mLastPageFreedSize = (size);
DBG_MEMSET(mLastPageFreed, NS_PAGEMGR_PAGE_FREE_PATTERN, mLastPageFreedSize);
#ifdef NS_PAGEMGR_COMMIT_TRACE
{
char buf[64];
PR_snprintf(buf, sizeof(buf), "lfree %p %u\n",
mLastPageFreed, mLastPageFreedSize);
OutputDebugString(buf);
}
#endif
mLastPageFreeHits++;
return 1;
}
#else /* !NS_PAGEMGR_DEBUG */
#define NS_PAGEMGR_COMMIT_CLUSTER(addr, size) \
(PR_ASSERT((void*)(addr) != NULL), \
((mLastPageFreed == (void*)(addr) && mLastPageFreedSize == (size)) \
? (DBG_MEMSET(mLastPageFreed, NS_PAGEMGR_PAGE_ALLOC_PATTERN, mLastPageFreedSize), \
mLastPageTemp = mLastPageFreed, \
mLastPageFreed = NULL, \
mLastPageFreedSize = 0, \
mLastPageTemp) \
: (((mLastPageFreed && \
((char*)mLastPageFreed < ((char*)(addr) + (size)) \
&& ((char*)mLastPageFreed + mLastPageFreedSize) > (char*)(addr))) \
? (VirtualFree(mLastPageFreed, mLastPageFreedSize, MEM_DECOMMIT), \
mLastPageFreed = NULL, \
mLastPageFreedSize = 0) \
: ((void)0)), \
VirtualAlloc((void*)(addr), (size), MEM_COMMIT, PAGE_READWRITE)))) \
#define NS_PAGEMGR_DECOMMIT_CLUSTER(addr, size) \
(PR_ASSERT(mLastPageFreed != (void*)(addr)), \
(mLastPageFreed \
? (VirtualFree(addr, size, MEM_DECOMMIT)) \
: (mLastPageFreed = (addr), \
mLastPageFreedSize = (size), \
DBG_MEMSET(mLastPageFreed, NS_PAGEMGR_PAGE_FREE_PATTERN, mLastPageFreedSize), \
1))) \
#endif /* !NS_PAGEMGR_DEBUG */
#else /* !NS_PAGEMGR_PAGE_HYSTERESIS */
#define NS_PAGEMGR_COMMIT_CLUSTER(addr, size) \
VirtualAlloc((void*)(addr), (size), MEM_COMMIT, PAGE_READWRITE)
#define NS_PAGEMGR_DECOMMIT_CLUSTER(addr, size) \
VirtualFree((void*)(addr), (size), MEM_DECOMMIT)
#endif /* !NS_PAGEMGR_PAGE_HYSTERESIS */
#else /* !XP_PC */
#define NS_PAGEMGR_COMMIT_CLUSTER(addr, size) (addr)
#define NS_PAGEMGR_DECOMMIT_CLUSTER(addr, size) 1
#endif /* !XP_PC */
nsPage*
nsPageMgr::NewCluster(nsPageCount nPages)
{
nsAutoMonitor mon(mMonitor);
nsPage* addr;
PR_ASSERT(nPages > 0);
addr = AllocClusterFromFreeList(nPages);
if (!addr && mBoundary + nPages <= mMemoryBase + mPageCount) {
addr = mBoundary;
mBoundary += nPages;
}
if (addr) {
/* Extend the mapping */
nsPage* vaddr;
PRUword size = nPages << NS_PAGEMGR_PAGE_BITS;
PR_ASSERT(NS_PAGEMGR_IS_ALIGNED(addr, NS_PAGEMGR_PAGE_BITS));
vaddr = (nsPage*)NS_PAGEMGR_COMMIT_CLUSTER((void*)addr, size);
#ifdef NS_PAGEMGR_VERIFYCLUSTERS
VerifyClusters(nPages);
#endif
if (addr) {
PR_ASSERT(vaddr == addr);
}
else {
DestroyCluster(addr, nPages);
}
DBG_MEMSET(addr, NS_PAGEMGR_PAGE_ALLOC_PATTERN, size);
}
return (nsPage*)addr;
}
void
nsPageMgr::DestroyCluster(nsPage* basePage, nsPageCount nPages)
{
nsAutoMonitor mon(mMonitor);
int freeResult;
PRUword size = nPages << NS_PAGEMGR_PAGE_BITS;
PR_ASSERT(nPages > 0);
PR_ASSERT(NS_PAGEMGR_IS_ALIGNED(basePage, NS_PAGEMGR_PAGE_BITS));
PR_ASSERT(mMemoryBase <= basePage);
PR_ASSERT(basePage + nPages <= mMemoryBase + mPageCount);
DBG_MEMSET(basePage, NS_PAGEMGR_PAGE_FREE_PATTERN, size);
freeResult = NS_PAGEMGR_DECOMMIT_CLUSTER((void*)basePage, size);
PR_ASSERT(freeResult);
if (basePage + nPages == mBoundary) {
nsClusterDesc **p;
nsClusterDesc *desc;
/* We deallocated the last set of clusters. Move the mBoundary lower. */
mBoundary = basePage;
/* The last free cluster might now be adjacent to the mBoundary; if so,
move the mBoundary before that cluster and delete that cluster
altogether. */
p = &mFreeClusters;
while ((desc = *p) != NULL) {
if (!desc->mNext && desc->mAddr + desc->mPageCount == mBoundary) {
*p = 0;
mBoundary = desc->mAddr;
DeleteFreeClusterDesc(desc);
}
else {
p = &desc->mNext;
}
}
}
else {
AddClusterToFreeList(basePage, nPages);
}
#ifdef NS_PAGEMGR_VERIFYCLUSTERS
VerifyClusters(-(PRWord)nPages);
#endif
}
////////////////////////////////////////////////////////////////////////////////
// nsIPageManager methods:
NS_IMETHODIMP
nsPageMgr::AllocPages(PRUint32 pageCount, void* *result)
{
nsPage* page = NewCluster(NS_STATIC_CAST(nsPageCount, pageCount));
if (page == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
*result = page;
return NS_OK;
}
NS_IMETHODIMP
nsPageMgr::DeallocPages(PRUint32 pageCount, void* pages)
{
DestroyCluster(NS_STATIC_CAST(nsPage*, pages),
NS_STATIC_CAST(nsPageCount, pageCount));
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// nsIAllocator methods:
//
// Note: nsIAllocator needs to keep track of the size of the blocks it allocates
// whereas, nsIPageManager doesn't. That means that there's a little extra
// overhead for users of this interface. It also means that things allocated
// with the nsIPageManager interface can't be freed with the nsIAllocator
// interface and vice versa.
NS_IMETHODIMP_(void*)
nsPageMgr::Alloc(PRUint32 size)
{
nsAutoMonitor mon(mMonitor);
nsresult rv;
void* page = nsnull;
PRUint32 pageCount = NS_PAGEMGR_PAGE_COUNT(size);
rv = AllocPages(pageCount, &page);
if (NS_FAILED(rv))
return nsnull;
// Add this cluster to the mInUseClusters list:
nsClusterDesc* desc = NewFreeClusterDesc();
if (desc == nsnull) {
rv = DeallocPages(pageCount, page);
NS_ASSERTION(NS_SUCCEEDED(rv), "DeallocPages failed");
return nsnull;
}
desc->mAddr = (nsPage*)page;
desc->mPageCount = pageCount;
desc->mNext = mInUseClusters;
mInUseClusters = desc;
return page;
}
NS_IMETHODIMP_(void*)
nsPageMgr::Realloc(void* ptr, PRUint32 size)
{
// XXX This realloc implementation could be made smarter by trying to
// append to the current block, but I don't think we really care right now.
nsresult rv;
rv = Free(ptr);
if (NS_FAILED(rv)) return nsnull;
void* newPtr = Alloc(size);
return newPtr;
}
NS_IMETHODIMP
nsPageMgr::Free(void* ptr)
{
nsAutoMonitor mon(mMonitor);
PR_ASSERT(NS_PAGEMGR_IS_ALIGNED(ptr, NS_PAGEMGR_PAGE_BITS));
// Remove the cluster from the mInUseClusters list:
nsClusterDesc** list = &mInUseClusters;
nsClusterDesc* desc;
while ((desc = *list) != nsnull) {
if (desc->mAddr == ptr) {
// found -- unlink the desc and free it
*list = desc->mNext;
nsresult rv = DeallocPages(desc->mPageCount, ptr);
DeleteFreeClusterDesc(desc);
return rv;
}
list = &desc->mNext;
}
NS_ASSERTION(0, "memory not allocated with nsPageMgr::Alloc");
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsPageMgr::HeapMinimize(void)
{
// can't compact this heap
return NS_ERROR_FAILURE;
}
////////////////////////////////////////////////////////////////////////////////

View File

@@ -1,203 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsPageMgr_h__
#define nsPageMgr_h__
#include "nsIPageManager.h"
#include "nsIAllocator.h"
#include "nscore.h"
#include "nsAutoLock.h"
#include "prlog.h"
#ifdef XP_MAC
#include <Types.h>
#include <Memory.h>
#endif
#if defined(XP_BEOS)
#include <OS.h>
#endif
/*******************************************************************************
* Configuration/Debugging parameters:
******************************************************************************/
#ifdef NS_DEBUG
//#define NS_PAGEMGR_DEBUG
#endif
#define NS_PAGEMGR_PAGE_HYSTERESIS /* undef if you want to compare */
//#define NS_PAGEMGR_COMMIT_TRACE
#ifdef NS_PAGEMGR_DEBUG
#define NS_PAGEMGR_VERIFYCLUSTERS
#define NS_PAGEMGR_DBG_MEMSET
#endif
#define NS_PAGEMGR_MIN_PAGES 32 // XXX bogus -- this should be a runtime parameter
#define NS_PAGEMGR_MAX_PAGES 2560 // 10 meg XXX bogus -- this should be a runtime parameter
/******************************************************************************/
#ifdef NS_PAGEMGR_DBG_MEMSET
#include <string.h> /* for memset */
#include <stdio.h>
#define DBG_MEMSET(dest, pattern, size) memset(dest, pattern, size)
#define NS_PAGEMGR_PAGE_ALLOC_PATTERN 0xCB
#define NS_PAGEMGR_PAGE_FREE_PATTERN 0xCD
#else
#define DBG_MEMSET(dest, pattern, size) ((void)0)
#endif
#define NS_PAGEMGR_ALIGN(p, nBits) ((PRWord)(p) & ~((1 << nBits) - 1))
#define NS_PAGEMGR_IS_ALIGNED(p, nBits) ((PRWord)(p) == NS_PAGEMGR_ALIGN(p, nBits))
/*******************************************************************************
* Test for overlapping (one-dimensional) regions
******************************************************************************/
inline PRBool nsOverlapping(char* min1, char* max1, char* min2, char* max2)
{
PR_ASSERT(min1 < max1);
PR_ASSERT(min2 < max2);
return (min1 < max2 && max1 > min2);
}
/*******************************************************************************
* Types
******************************************************************************/
typedef PRUint8 nsPage[NS_PAGEMGR_PAGE_SIZE];
typedef PRUword nsPageCount; /* int big enough to count pages */
/*******************************************************************************
* Macros
******************************************************************************/
#define NS_PAGEMGR_PAGE_ROUNDDN(addr) ((nsPage*)NS_PAGEMGR_ALIGN((PRUword)(addr), NS_PAGEMGR_PAGE_BITS))
#define NS_PAGEMGR_PAGE_ROUNDUP(addr) NS_PAGEMGR_PAGE_ROUNDDN((PRUword)(addr) + NS_PAGEMGR_PAGE_SIZE)
/*******************************************************************************
* Page Manager
******************************************************************************/
class nsPageMgr : public nsIPageManager, public nsIAllocator {
public:
NS_DECL_ISUPPORTS
static NS_METHOD
Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
// nsIPageManager methods:
NS_IMETHOD AllocPages(PRUint32 pageCount, void* *result);
NS_IMETHOD DeallocPages(PRUint32 pageCount, void* pages);
// nsIAllocator methods:
NS_IMETHOD_(void*) Alloc(PRUint32 size);
NS_IMETHOD_(void*) Realloc(void* ptr, PRUint32 size);
NS_IMETHOD Free(void* ptr);
NS_IMETHOD HeapMinimize(void);
// nsPageMgr methods:
nsPageMgr();
virtual ~nsPageMgr();
nsresult Init(nsPageCount minPages = NS_PAGEMGR_MIN_PAGES,
nsPageCount maxPages = NS_PAGEMGR_MAX_PAGES);
struct nsClusterDesc {
nsClusterDesc* mNext; /* Link to next cluster of free pages */
nsPage* mAddr; /* First page in cluster of free pages */
nsPageCount mPageCount; /* Total size of cluster of free pages in bytes */
};
void DeleteFreeClusterDesc(nsClusterDesc *desc);
nsClusterDesc* NewFreeClusterDesc(void);
nsPage* AllocClusterFromFreeList(PRUword nPages);
void AddClusterToFreeList(nsPage* addr, PRWord nPages);
#ifdef NS_PAGEMGR_VERIFYCLUSTERS
void VerifyClusters(PRWord nPagesDelta);
#endif
#if defined(XP_PC) && defined(NS_PAGEMGR_DEBUG)
void* NS_PAGEMGR_COMMIT_CLUSTER(void* addr, PRUword size);
int NS_PAGEMGR_DECOMMIT_CLUSTER(void* addr, PRUword size);
#endif
// Managing Pages:
PRStatus InitPages(nsPageCount minPages, nsPageCount maxPages);
void FinalizePages();
nsPage* NewCluster(nsPageCount nPages);
void DestroyCluster(nsPage* basePage, nsPageCount nPages);
protected:
nsClusterDesc* mUnusedClusterDescs;
nsClusterDesc* mFreeClusters;
nsClusterDesc* mInUseClusters; // used by nsIAllocator methods
PRMonitor* mMonitor;
nsPage* mMemoryBase;
nsPage* mBoundary;
nsPageCount mPageCount;
#ifdef XP_PC
/* one-page hysteresis */
void* mLastPageFreed;
PRUword mLastPageFreedSize;
void* mLastPageTemp;
PRUword mLastPageTempSize;
# ifdef NS_PAGEMGR_DEBUG
PRUword mLastPageAllocTries;
PRUword mLastPageAllocHits;
PRUword mLastPageFreeTries;
PRUword mLastPageFreeHits;
# endif
#endif
#if defined(XP_MAC)
struct nsSegmentDesc {
Handle mHandle;
nsPage* mFirstPage;
nsPage* mLastPage;
};
PRUint8* mSegMap;
nsSegmentDesc* mSegTable;
PRWord mSegTableCount;
#endif
#if defined(XP_BEOS)
area_id mAid;
#endif
#if (! defined(VMS)) && (! defined(XP_BEOS)) && (! defined(XP_MAC)) && (! defined(XP_PC))
int mZero_fd;
#endif
};
/******************************************************************************/
#endif /* nsPageMgr_h__ */

View File

@@ -1,551 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#define NS_IMPL_IDS
#include "nsProperties.h"
#include <iostream.h>
////////////////////////////////////////////////////////////////////////////////
nsProperties::nsProperties(nsISupports* outer)
{
NS_INIT_AGGREGATED(outer);
}
NS_METHOD
nsProperties::Create(nsISupports *outer, REFNSIID aIID, void **aResult)
{
NS_ENSURE_ARG_POINTER(aResult);
NS_ENSURE_PROPER_AGGREGATION(outer, aIID);
nsProperties* props = new nsProperties(outer);
if (props == NULL)
return NS_ERROR_OUT_OF_MEMORY;
nsresult rv = props->AggregatedQueryInterface(aIID, aResult);
if (NS_FAILED(rv))
delete props;
return rv;
}
PRBool
nsProperties::ReleaseValues(nsHashKey* key, void* data, void* closure)
{
nsISupports* value = (nsISupports*)data;
NS_IF_RELEASE(value);
return PR_TRUE;
}
nsProperties::~nsProperties()
{
Enumerate(ReleaseValues);
}
NS_IMPL_AGGREGATED(nsProperties);
NS_METHOD
nsProperties::AggregatedQueryInterface(const nsIID& aIID, void** aInstancePtr)
{
NS_ENSURE_ARG_POINTER(aInstancePtr);
if (aIID.Equals(nsCOMTypeInfo<nsISupports>::GetIID()))
*aInstancePtr = GetInner();
else if (aIID.Equals(nsIProperties::GetIID()))
*aInstancePtr = NS_STATIC_CAST(nsIProperties*, this);
else {
*aInstancePtr = nsnull;
return NS_NOINTERFACE;
}
NS_ADDREF((nsISupports*)*aInstancePtr);
return NS_OK;
}
NS_IMETHODIMP
nsProperties::DefineProperty(const char* prop, nsISupports* initialValue)
{
nsStringKey key(prop);
if (Exists(&key))
return NS_ERROR_FAILURE;
nsISupports* prevValue = (nsISupports*)Put(&key, initialValue);
NS_ASSERTION(prevValue == NULL, "hashtable error");
NS_IF_ADDREF(initialValue);
return NS_OK;
}
NS_IMETHODIMP
nsProperties::UndefineProperty(const char* prop)
{
nsStringKey key(prop);
if (!Exists(&key))
return NS_ERROR_FAILURE;
nsISupports* prevValue = (nsISupports*)Remove(&key);
NS_IF_RELEASE(prevValue);
return NS_OK;
}
NS_IMETHODIMP
nsProperties::GetProperty(const char* prop, nsISupports* *result)
{
nsStringKey key(prop);
if (!Exists(&key))
return NS_ERROR_FAILURE;
nsISupports* value = (nsISupports*)Get(&key);
NS_IF_ADDREF(value);
*result = value;
return NS_OK;
}
NS_IMETHODIMP
nsProperties::SetProperty(const char* prop, nsISupports* value)
{
nsStringKey key(prop);
if (!Exists(&key))
return NS_ERROR_FAILURE;
nsISupports* prevValue = (nsISupports*)Put(&key, value);
NS_IF_RELEASE(prevValue);
NS_IF_ADDREF(value);
return NS_OK;
}
NS_IMETHODIMP
nsProperties::HasProperty(const char* prop, nsISupports* expectedValue)
{
nsISupports* value;
nsresult rv = GetProperty(prop, &value);
if (NS_FAILED(rv)) return NS_COMFALSE;
rv = (value == expectedValue) ? NS_OK : NS_COMFALSE;
NS_IF_RELEASE(value);
return rv;
}
////////////////////////////////////////////////////////////////////////////////
nsresult
NS_NewIProperties(nsIProperties* *result)
{
return nsProperties::Create(NULL, nsIProperties::GetIID(), (void**)result);
}
////////////////////////////////////////////////////////////////////////////////
// Persistent Properties (should go in a separate file)
////////////////////////////////////////////////////////////////////////////////
#include "nsID.h"
#include "nsCRT.h"
#include "nsIInputStream.h"
#include "nsIProperties.h"
#include "nsIUnicharInputStream.h"
#include "nsProperties.h"
#include "pratom.h"
static PLHashNumber
HashKey(const PRUnichar *aString)
{
return (PLHashNumber) nsCRT::HashValue(aString);
}
static PRIntn
CompareKeys(const PRUnichar *aStr1, const PRUnichar *aStr2)
{
return nsCRT::strcmp(aStr1, aStr2) == 0;
}
nsPersistentProperties::nsPersistentProperties()
{
NS_INIT_REFCNT();
mIn = nsnull;
mSubclass = NS_STATIC_CAST(nsIPersistentProperties*, this);
mTable = PL_NewHashTable(8, (PLHashFunction) HashKey,
(PLHashComparator) CompareKeys,
(PLHashComparator) nsnull, nsnull, nsnull);
}
PR_STATIC_CALLBACK(PRIntn)
FreeHashEntries(PLHashEntry* he, PRIntn i, void* arg)
{
nsCRT::free((PRUnichar*)he->key);
nsCRT::free((PRUnichar*)he->value);
return HT_ENUMERATE_REMOVE;
}
nsPersistentProperties::~nsPersistentProperties()
{
if (mTable) {
// Free the PRUnicode* pointers contained in the hash table entries
PL_HashTableEnumerateEntries(mTable, FreeHashEntries, 0);
PL_HashTableDestroy(mTable);
mTable = nsnull;
}
}
NS_METHOD
nsPersistentProperties::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
{
if (aOuter)
return NS_ERROR_NO_AGGREGATION;
nsPersistentProperties* props = new nsPersistentProperties();
if (props == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(props);
nsresult rv = props->QueryInterface(aIID, aResult);
NS_RELEASE(props);
return rv;
}
NS_IMPL_ISUPPORTS2(nsPersistentProperties, nsIPersistentProperties, nsIProperties)
NS_IMETHODIMP
nsPersistentProperties::Load(nsIInputStream *aIn)
{
PRInt32 c;
nsresult ret;
nsAutoString uesc("x-u-escaped");
ret = NS_NewConverterStream(&mIn, nsnull, aIn, 0, &uesc);
if (ret != NS_OK) {
#ifdef NS_DEBUG
cout << "NS_NewConverterStream failed" << endl;
#endif
return NS_ERROR_FAILURE;
}
c = Read();
while (1) {
c = SkipWhiteSpace(c);
if (c < 0) {
break;
}
else if ((c == '#') || (c == '!')) {
c = SkipLine(c);
continue;
}
else {
nsAutoString key("");
while ((c >= 0) && (c != '=') && (c != ':')) {
key.Append((PRUnichar) c);
c = Read();
}
if (c < 0) {
break;
}
char *trimThese = " \t";
key.Trim(trimThese, PR_FALSE, PR_TRUE);
c = Read();
nsAutoString value("");
while ((c >= 0) && (c != '\r') && (c != '\n')) {
if (c == '\\') {
c = Read();
if ((c == '\r') || (c == '\n')) {
c = SkipWhiteSpace(c);
}
else {
value.Append('\\');
}
}
value.Append((PRUnichar) c);
c = Read();
}
value.Trim(trimThese, PR_TRUE, PR_TRUE);
nsAutoString oldValue("");
mSubclass->SetStringProperty(key, value, oldValue);
}
}
mIn->Close();
NS_RELEASE(mIn);
NS_ASSERTION(!mIn, "unexpected remaining reference");
return NS_OK;
}
NS_IMETHODIMP
nsPersistentProperties::SetStringProperty(const nsString& aKey, nsString& aNewValue,
nsString& aOldValue)
{
// XXX The ToNewCString() calls allocate memory using "new" so this code
// causes a memory leak...
#if 0
cout << "will add " << aKey.ToNewCString() << "=" << aNewValue.ToNewCString() << endl;
#endif
if (!mTable) {
return NS_ERROR_FAILURE;
}
const PRUnichar *key = aKey.GetUnicode(); // returns internal pointer (not a copy)
PRUint32 len;
PRUint32 hashValue = nsCRT::HashValue(key, &len);
PLHashEntry **hep = PL_HashTableRawLookup(mTable, hashValue, key);
PLHashEntry *he = *hep;
if (he) {
// XXX should we copy the old value to aOldValue, and then remove it?
#ifdef NS_DEBUG
char buf[128];
aKey.ToCString(buf, sizeof(buf));
printf("warning: property %s already exists\n", buf);
#endif
return NS_OK;
}
PL_HashTableRawAdd(mTable, hep, hashValue, aKey.ToNewUnicode(),
aNewValue.ToNewUnicode());
return NS_OK;
}
NS_IMETHODIMP
nsPersistentProperties::Save(nsIOutputStream* aOut, const nsString& aHeader)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsPersistentProperties::Subclass(nsIPersistentProperties* aSubclass)
{
if (aSubclass) {
mSubclass = aSubclass;
}
return NS_OK;
}
NS_IMETHODIMP
nsPersistentProperties::GetStringProperty(const nsString& aKey, nsString& aValue)
{
if (!mTable)
return NS_ERROR_FAILURE;
const PRUnichar *key = aKey.GetUnicode();
if (!mTable) {
return NS_ERROR_FAILURE;
}
PRUint32 len;
PRUint32 hashValue = nsCRT::HashValue(key, &len);
PLHashEntry **hep = PL_HashTableRawLookup(mTable, hashValue, key);
PLHashEntry *he = *hep;
if (he) {
aValue = (const PRUnichar*)he->value;
return NS_OK;
}
return NS_ERROR_FAILURE;
}
PR_STATIC_CALLBACK(PRIntn)
AddElemToArray(PLHashEntry* he, PRIntn i, void* arg)
{
nsISupportsArray *propArray = (nsISupportsArray *) arg;
nsString* keyStr = new nsString((PRUnichar*) he->key);
nsString* valueStr = new nsString((PRUnichar*) he->value);
nsPropertyElement *element = new nsPropertyElement();
if (!element)
return HT_ENUMERATE_STOP;
NS_ADDREF(element);
element->SetKey(keyStr);
element->SetValue(valueStr);
propArray->InsertElementAt(element, i);
return HT_ENUMERATE_NEXT;
}
NS_IMETHODIMP
nsPersistentProperties::EnumerateProperties(nsIBidirectionalEnumerator** aResult)
{
if (!mTable)
return NS_ERROR_FAILURE;
nsISupportsArray* propArray;
nsresult rv = NS_NewISupportsArray(&propArray);
if (rv != NS_OK)
return rv;
// Step through hash entries populating a transient array
PRIntn n = PL_HashTableEnumerateEntries(mTable, AddElemToArray, (void *)propArray);
if ( n < (PRIntn) mTable->nentries )
return NS_ERROR_OUT_OF_MEMORY;
// Convert array into enumerator
rv = NS_NewISupportsArrayEnumerator(propArray, aResult);
if (rv != NS_OK)
return rv;
return NS_OK;
}
PRInt32
nsPersistentProperties::Read()
{
PRUnichar c;
PRUint32 nRead;
nsresult ret;
ret = mIn->Read(&c, 0, 1, &nRead);
if (ret == NS_OK && nRead == 1) {
return c;
}
return -1;
}
#define IS_WHITE_SPACE(c) \
(((c) == ' ') || ((c) == '\t') || ((c) == '\r') || ((c) == '\n'))
PRInt32
nsPersistentProperties::SkipWhiteSpace(PRInt32 c)
{
while ((c >= 0) && IS_WHITE_SPACE(c)) {
c = Read();
}
return c;
}
PRInt32
nsPersistentProperties::SkipLine(PRInt32 c)
{
while ((c >= 0) && (c != '\r') && (c != '\n')) {
c = Read();
}
if (c == '\r') {
c = Read();
}
if (c == '\n') {
c = Read();
}
return c;
}
////////////////////////////////////////////////////////////////////////////////
NS_IMETHODIMP
nsPersistentProperties::DefineProperty(const char* prop, nsISupports* initialValue)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsPersistentProperties::UndefineProperty(const char* prop)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsPersistentProperties::GetProperty(const char* prop, nsISupports* *result)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsPersistentProperties::SetProperty(const char* prop, nsISupports* value)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsPersistentProperties::HasProperty(const char* prop, nsISupports* value)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
////////////////////////////////////////////////////////////////////////////////
// PropertyElement
////////////////////////////////////////////////////////////////////////////////
nsPropertyElement::nsPropertyElement()
{
NS_INIT_REFCNT();
mKey = nsnull;
mValue = nsnull;
}
nsPropertyElement::~nsPropertyElement()
{
if (mKey)
delete mKey;
if (mValue)
delete mValue;
}
NS_METHOD
nsPropertyElement::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
{
if (aOuter)
return NS_ERROR_NO_AGGREGATION;
nsPropertyElement* propElem = new nsPropertyElement();
if (propElem == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(propElem);
nsresult rv = propElem->QueryInterface(aIID, aResult);
NS_RELEASE(propElem);
return rv;
}
NS_IMPL_ISUPPORTS1(nsPropertyElement, nsIPropertyElement)
NS_IMETHODIMP
nsPropertyElement::GetKey(nsString** aReturnKey)
{
if (aReturnKey)
{
*aReturnKey = mKey;
return NS_OK;
}
return NS_ERROR_INVALID_POINTER;
}
NS_IMETHODIMP
nsPropertyElement::GetValue(nsString** aReturnValue)
{
if (aReturnValue)
{
*aReturnValue = mValue;
return NS_OK;
}
return NS_ERROR_INVALID_POINTER;
}
NS_IMETHODIMP
nsPropertyElement::SetKey(nsString* aKey)
{
mKey = aKey;
return NS_OK;
}
NS_IMETHODIMP
nsPropertyElement::SetValue(nsString* aValue)
{
mValue = aValue;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////

View File

@@ -1,113 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsProperties_h___
#define nsProperties_h___
#include "nsIProperties.h"
#include "nsHashtable.h"
#include "nsAgg.h"
class nsIUnicharInputStream;
class nsProperties : public nsIProperties, public nsHashtable {
public:
NS_DECL_AGGREGATED
// nsIProperties methods:
NS_IMETHOD DefineProperty(const char* prop, nsISupports* initialValue);
NS_IMETHOD UndefineProperty(const char* prop);
NS_IMETHOD GetProperty(const char* prop, nsISupports* *result);
NS_IMETHOD SetProperty(const char* prop, nsISupports* value);
NS_IMETHOD HasProperty(const char* prop, nsISupports* value);
// nsProperties methods:
nsProperties(nsISupports* outer);
virtual ~nsProperties();
static NS_METHOD
Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
static PRBool ReleaseValues(nsHashKey* key, void* data, void* closure);
};
class nsPersistentProperties : public nsIPersistentProperties
{
public:
nsPersistentProperties();
virtual ~nsPersistentProperties();
NS_DECL_ISUPPORTS
static NS_METHOD
Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
// nsIProperties methods:
NS_IMETHOD DefineProperty(const char* prop, nsISupports* initialValue);
NS_IMETHOD UndefineProperty(const char* prop);
NS_IMETHOD GetProperty(const char* prop, nsISupports* *result);
NS_IMETHOD SetProperty(const char* prop, nsISupports* value);
NS_IMETHOD HasProperty(const char* prop, nsISupports* value);
// nsIPersistentProperties methods:
NS_IMETHOD Load(nsIInputStream* aIn);
NS_IMETHOD Save(nsIOutputStream* aOut, const nsString& aHeader);
NS_IMETHOD Subclass(nsIPersistentProperties* aSubclass);
NS_IMETHOD EnumerateProperties(nsIBidirectionalEnumerator* *aResult);
// XXX these 2 methods will be subsumed by the ones from
// nsIProperties once we figure this all out
NS_IMETHOD GetStringProperty(const nsString& aKey, nsString& aValue);
NS_IMETHOD SetStringProperty(const nsString& aKey, nsString& aNewValue,
nsString& aOldValue);
// nsPersistentProperties methods:
PRInt32 Read();
PRInt32 SkipLine(PRInt32 c);
PRInt32 SkipWhiteSpace(PRInt32 c);
nsIUnicharInputStream* mIn;
nsIPersistentProperties* mSubclass;
struct PLHashTable* mTable;
};
class nsPropertyElement : public nsIPropertyElement
{
public:
nsPropertyElement();
virtual ~nsPropertyElement();
NS_DECL_ISUPPORTS
static NS_METHOD
Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
// nsIPropertyElement methods:
NS_IMETHOD GetKey(nsString** aReturnKey);
NS_IMETHOD GetValue(nsString** aReturnValue);
NS_IMETHOD SetKey(nsString* aKey);
NS_IMETHOD SetValue(nsString* aValue);
protected:
nsString* mKey;
nsString* mValue;
};
#endif /* nsProperties_h___ */

View File

@@ -1,186 +0,0 @@
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* We need this because Solaris' version of qsort is broken and
* causes array bounds reads.
*/
#include <stdlib.h>
#include "prtypes.h"
#include "nsQuickSort.h"
NS_BEGIN_EXTERN_C
#if !defined(DEBUG) && (defined(__cplusplus) || defined(__gcc))
# ifndef INLINE
# define INLINE inline
# endif
#else
# define INLINE
#endif
typedef int cmp_t(const void *, const void *, void *);
static INLINE char *med3(char *, char *, char *, cmp_t *, void *);
static INLINE void swapfunc(char *, char *, int, int);
/*
* Qsort routine from Bentley & McIlroy's "Engineering a Sort Function".
*/
#define swapcode(TYPE, parmi, parmj, n) { \
long i = (n) / sizeof (TYPE); \
register TYPE *pi = (TYPE *) (parmi); \
register TYPE *pj = (TYPE *) (parmj); \
do { \
register TYPE t = *pi; \
*pi++ = *pj; \
*pj++ = t; \
} while (--i > 0); \
}
#define SWAPINIT(a, es) swaptype = ((char *)a - (char *)0) % sizeof(long) || \
es % sizeof(long) ? 2 : es == sizeof(long)? 0 : 1;
static INLINE void
swapfunc(char *a, char *b, int n, int swaptype)
{
if(swaptype <= 1)
swapcode(long, a, b, n)
else
swapcode(char, a, b, n)
}
#define swap(a, b) \
if (swaptype == 0) { \
long t = *(long *)(a); \
*(long *)(a) = *(long *)(b); \
*(long *)(b) = t; \
} else \
swapfunc((char *)a, (char*)b, (int)es, swaptype)
#define vecswap(a, b, n) if ((n) > 0) swapfunc((char *)a, (char *)b, (int)n, swaptype)
static INLINE char *
med3(char *a, char *b, char *c, cmp_t* cmp, void *data)
{
return cmp(a, b, data) < 0 ?
(cmp(b, c, data) < 0 ? b : (cmp(a, c, data) < 0 ? c : a ))
:(cmp(b, c, data) > 0 ? b : (cmp(a, c, data) < 0 ? a : c ));
}
void NS_QuickSort (
void *a,
unsigned int n,
unsigned int es,
cmp_t *cmp,
void *data
)
{
char *pa, *pb, *pc, *pd, *pl, *pm, *pn;
int d, r, swaptype, swap_cnt;
loop: SWAPINIT(a, es);
swap_cnt = 0;
if (n < 7) {
for (pm = (char *)a + es; pm < (char *)a + n * es; pm += es)
for (pl = pm; pl > (char *)a && cmp(pl - es, pl, data) > 0;
pl -= es)
swap(pl, pl - es);
return;
}
pm = (char *)a + (n / 2) * es;
if (n > 7) {
pl = (char *)a;
pn = (char *)a + (n - 1) * es;
if (n > 40) {
d = (n / 8) * es;
pl = med3(pl, pl + d, pl + 2 * d, cmp, data);
pm = med3(pm - d, pm, pm + d, cmp, data);
pn = med3(pn - 2 * d, pn - d, pn, cmp, data);
}
pm = med3(pl, pm, pn, cmp, data);
}
swap(a, pm);
pa = pb = (char *)a + es;
pc = pd = (char *)a + (n - 1) * es;
for (;;) {
while (pb <= pc && (r = cmp(pb, a, data)) <= 0) {
if (r == 0) {
swap_cnt = 1;
swap(pa, pb);
pa += es;
}
pb += es;
}
while (pb <= pc && (r = cmp(pc, a, data)) >= 0) {
if (r == 0) {
swap_cnt = 1;
swap(pc, pd);
pd -= es;
}
pc -= es;
}
if (pb > pc)
break;
swap(pb, pc);
swap_cnt = 1;
pb += es;
pc -= es;
}
if (swap_cnt == 0) { /* Switch to insertion sort */
for (pm = (char *)a + es; pm < (char *)a + n * es; pm += es)
for (pl = pm; pl > (char *)a && cmp(pl - es, pl, data) > 0;
pl -= es)
swap(pl, pl - es);
return;
}
pn = (char *)a + n * es;
r = PR_MIN(pa - (char *)a, pb - pa);
vecswap(a, pb - r, r);
r = PR_MIN(pd - pc, (int)(pn - pd - es));
vecswap(pb, pn - r, r);
if ((r = pb - pa) > (int)es)
NS_QuickSort(a, r / es, es, cmp, data);
if ((r = pd - pc) > (int)es) {
/* Iterate rather than recurse to save stack space */
a = pn - r;
n = r / es;
goto loop;
}
/* NS_QuickSort(pn - r, r / es, es, cmp, data);*/
}
NS_END_EXTERN_C

View File

@@ -1,41 +0,0 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/* We need this because Solaris' version of qsort is broken and
* causes array bounds reads.
*/
#ifndef nsQuickSort_h___
#define nsQuickSort_h___
#include "nscore.h"
#include "prtypes.h"
/* Had to pull the following define out of xp_core.h
* to avoid including xp_core.h.
* That brought in too many header file dependencies.
*/
NS_BEGIN_EXTERN_C
PR_EXTERN(void) NS_QuickSort(void *, unsigned int, unsigned int,
int (*)(const void *, const void *, void *),
void *);
NS_END_EXTERN_C
#endif /* nsQuickSort_h___ */

View File

@@ -1,271 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsISizeOfHandler.h"
#include "nsIAtom.h"
#include "plhash.h"
class nsSizeOfHandler : public nsISizeOfHandler {
public:
nsSizeOfHandler();
virtual ~nsSizeOfHandler();
// nsISupports
NS_DECL_ISUPPORTS
// nsISizeOfHandler
NS_IMETHOD Init();
NS_IMETHOD RecordObject(void* aObject, PRBool* aResult);
NS_IMETHOD AddSize(nsIAtom* aKey, PRUint32 aSize);
NS_IMETHOD Report(nsISizeofReportFunc aFunc, void* aArg);
NS_IMETHOD GetTotals(PRUint32* aCountResult, PRUint32* aTotalSizeResult);
protected:
PRUint32 mTotalSize;
PRUint32 mTotalCount;
PLHashTable* mSizeTable;
PLHashTable* mObjectTable;
static PRIntn RemoveObjectEntry(PLHashEntry* he, PRIntn i, void* arg);
static PRIntn RemoveSizeEntry(PLHashEntry* he, PRIntn i, void* arg);
static PRIntn ReportEntry(PLHashEntry* he, PRIntn i, void* arg);
};
class SizeOfDataStats {
public:
SizeOfDataStats(nsIAtom* aType, PRUint32 aSize);
~SizeOfDataStats();
void Update(PRUint32 aSize);
nsIAtom* mType; // type
PRUint32 mCount; // # of objects of this type
PRUint32 mTotalSize; // total size of all objects of this type
PRUint32 mMinSize; // smallest size for this type
PRUint32 mMaxSize; // largest size for this type
};
//----------------------------------------------------------------------
MOZ_DECL_CTOR_COUNTER(SizeOfDataStats);
SizeOfDataStats::SizeOfDataStats(nsIAtom* aType, PRUint32 aSize)
: mType(aType),
mCount(1),
mTotalSize(aSize),
mMinSize(aSize),
mMaxSize(aSize)
{
MOZ_COUNT_CTOR(SizeOfDataStats);
NS_IF_ADDREF(mType);
}
SizeOfDataStats::~SizeOfDataStats()
{
MOZ_COUNT_DTOR(SizeOfDataStats);
NS_IF_RELEASE(mType);
}
void
SizeOfDataStats::Update(PRUint32 aSize)
{
mCount++;
if (aSize < mMinSize) mMinSize = aSize;
if (aSize > mMaxSize) mMaxSize = aSize;
mTotalSize += aSize;
}
//----------------------------------------------------------------------
#define POINTER_HASH_KEY(_atom) ((PLHashNumber) _atom)
static PLHashNumber
PointerHashKey(nsIAtom* key)
{
return POINTER_HASH_KEY(key);
}
static PRIntn
PointerCompareKeys(void* key1, void* key2)
{
return key1 == key2;
}
nsSizeOfHandler::nsSizeOfHandler()
: mTotalSize(0),
mTotalCount(0)
{
NS_INIT_REFCNT();
mTotalSize = 0;
mSizeTable = PL_NewHashTable(32, (PLHashFunction) PointerHashKey,
(PLHashComparator) PointerCompareKeys,
(PLHashComparator) nsnull,
nsnull, nsnull);
mObjectTable = PL_NewHashTable(32, (PLHashFunction) PointerHashKey,
(PLHashComparator) PointerCompareKeys,
(PLHashComparator) nsnull,
nsnull, nsnull);
}
PRIntn
nsSizeOfHandler::RemoveObjectEntry(PLHashEntry* he, PRIntn i, void* arg)
{
// Remove and free this entry and continue enumerating
return HT_ENUMERATE_REMOVE | HT_ENUMERATE_NEXT;
}
PRIntn
nsSizeOfHandler::RemoveSizeEntry(PLHashEntry* he, PRIntn i, void* arg)
{
if (he->value) {
SizeOfDataStats* stats = (SizeOfDataStats*) he->value;
he->value = nsnull;
delete stats;
}
// Remove and free this entry and continue enumerating
return HT_ENUMERATE_REMOVE | HT_ENUMERATE_NEXT;
}
nsSizeOfHandler::~nsSizeOfHandler()
{
if (nsnull != mObjectTable) {
PL_HashTableEnumerateEntries(mObjectTable, RemoveObjectEntry, 0);
PL_HashTableDestroy(mObjectTable);
}
if (nsnull != mSizeTable) {
PL_HashTableEnumerateEntries(mSizeTable, RemoveSizeEntry, 0);
PL_HashTableDestroy(mSizeTable);
}
}
NS_IMPL_ISUPPORTS1(nsSizeOfHandler, nsISizeOfHandler)
NS_IMETHODIMP
nsSizeOfHandler::Init()
{
if (mObjectTable) {
PL_HashTableEnumerateEntries(mObjectTable, RemoveObjectEntry, 0);
}
if (mSizeTable) {
PL_HashTableEnumerateEntries(mSizeTable, RemoveSizeEntry, 0);
}
mTotalCount = 0;
mTotalSize = 0;
return NS_OK;
}
NS_IMETHODIMP
nsSizeOfHandler::RecordObject(void* aAddr, PRBool* aResult)
{
if (!aResult) {
return NS_ERROR_NULL_POINTER;
}
PRBool result = PR_TRUE;
if (mObjectTable && aAddr) {
PLHashNumber hashCode = POINTER_HASH_KEY(aAddr);
PLHashEntry** hep = PL_HashTableRawLookup(mObjectTable, hashCode, aAddr);
PLHashEntry* he = *hep;
if (!he) {
// We've never seen it before. Add it to the table
(void) PL_HashTableRawAdd(mObjectTable, hep, hashCode, aAddr, aAddr);
result = PR_FALSE;
}
}
*aResult = result;
return NS_OK;
}
NS_IMETHODIMP
nsSizeOfHandler::AddSize(nsIAtom* aType, PRUint32 aSize)
{
PLHashNumber hashCode = POINTER_HASH_KEY(aType);
PLHashEntry** hep = PL_HashTableRawLookup(mSizeTable, hashCode, aType);
PLHashEntry* he = *hep;
if (he) {
// Stats already exist
SizeOfDataStats* stats = (SizeOfDataStats*) he->value;
stats->Update(aSize);
}
else {
// Make new stats for the new frame type
SizeOfDataStats* newStats = new SizeOfDataStats(aType, aSize);
PL_HashTableRawAdd(mSizeTable, hep, hashCode, aType, newStats);
}
mTotalCount++;
mTotalSize += aSize;
return NS_OK;
}
struct ReportArgs {
nsISizeOfHandler* mHandler;
nsISizeofReportFunc mFunc;
void* mArg;
};
PRIntn
nsSizeOfHandler::ReportEntry(PLHashEntry* he, PRIntn i, void* arg)
{
ReportArgs* ra = (ReportArgs*) arg;
if (he && ra && ra->mFunc) {
SizeOfDataStats* stats = (SizeOfDataStats*) he->value;
if (stats) {
(*ra->mFunc)(ra->mHandler, stats->mType, stats->mCount,
stats->mTotalSize, stats->mMinSize, stats->mMaxSize,
ra->mArg);
}
}
return HT_ENUMERATE_NEXT;
}
NS_IMETHODIMP
nsSizeOfHandler::Report(nsISizeofReportFunc aFunc, void* aArg)
{
ReportArgs ra;
ra.mHandler = this;
ra.mFunc = aFunc;
ra.mArg = aArg;
PL_HashTableEnumerateEntries(mSizeTable, ReportEntry, (void*) &ra);
return NS_OK;
}
NS_IMETHODIMP
nsSizeOfHandler::GetTotals(PRUint32* aTotalCountResult,
PRUint32* aTotalSizeResult)
{
if (!aTotalCountResult || !aTotalSizeResult) {
return NS_ERROR_NULL_POINTER;
}
*aTotalCountResult = mTotalCount;
*aTotalSizeResult = mTotalSize;
return NS_OK;
}
NS_COM nsresult
NS_NewSizeOfHandler(nsISizeOfHandler** aInstancePtrResult)
{
if (!aInstancePtrResult) {
return NS_ERROR_NULL_POINTER;
}
nsISizeOfHandler *it = new nsSizeOfHandler();
if (it == nsnull) {
return NS_ERROR_OUT_OF_MEMORY;
}
return it->QueryInterface(NS_GET_IID(nsISizeOfHandler), (void **) aInstancePtrResult);
}

View File

@@ -1,717 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/******************************************************************************************
MODULE NOTES:
This file contains the nsStr data structure.
This general purpose buffer management class is used as the basis for our strings.
It's benefits include:
1. An efficient set of library style functions for manipulating nsStrs
2. Support for 1 and 2 byte character strings (which can easily be increased to n)
3. Unicode awareness and interoperability.
*******************************************************************************************/
#include "nsStr.h"
#include "bufferRoutines.h"
#include "stdio.h" //only used for printf
#include "nsCRT.h"
#include "nsDeque.h"
//static const char* kCallFindChar = "For better performance, call FindChar() for targets whose length==1.";
//static const char* kCallRFindChar = "For better performance, call RFindChar() for targets whose length==1.";
static const PRUnichar gCommonEmptyBuffer[1] = {0};
/**
* This method initializes all the members of the nsStr structure
*
* @update gess10/30/98
* @param
* @return
*/
void nsStr::Initialize(nsStr& aDest,eCharSize aCharSize) {
aDest.mStr=(char*)gCommonEmptyBuffer;
aDest.mLength=0;
aDest.mCapacity=0;
aDest.mCharSize=aCharSize;
aDest.mOwnsBuffer=0;
}
/**
* This method initializes all the members of the nsStr structure
* @update gess10/30/98
* @param
* @return
*/
void nsStr::Initialize(nsStr& aDest,char* aCString,PRUint32 aCapacity,PRUint32 aLength,eCharSize aCharSize,PRBool aOwnsBuffer){
aDest.mStr=(aCString) ? aCString : (char*)gCommonEmptyBuffer;
aDest.mLength=aLength;
aDest.mCapacity=aCapacity;
aDest.mCharSize=aCharSize;
aDest.mOwnsBuffer=aOwnsBuffer;
}
/**
* This member destroys the memory buffer owned by an nsStr object (if it actually owns it)
* @update gess10/30/98
* @param
* @return
*/
void nsStr::Destroy(nsStr& aDest) {
if((aDest.mStr) && (aDest.mStr!=(char*)gCommonEmptyBuffer)) {
Free(aDest);
}
}
/**
* This method gets called when the internal buffer needs
* to grow to a given size. The original contents are not preserved.
* @update gess 3/30/98
* @param aNewLength -- new capacity of string in charSize units
* @return void
*/
PRBool nsStr::EnsureCapacity(nsStr& aString,PRUint32 aNewLength) {
PRBool result=PR_TRUE;
if(aNewLength>aString.mCapacity) {
result=Realloc(aString,aNewLength);
if(aString.mStr)
AddNullTerminator(aString);
}
return result;
}
/**
* This method gets called when the internal buffer needs
* to grow to a given size. The original contents ARE preserved.
* @update gess 3/30/98
* @param aNewLength -- new capacity of string in charSize units
* @return void
*/
PRBool nsStr::GrowCapacity(nsStr& aDest,PRUint32 aNewLength) {
PRBool result=PR_TRUE;
if(aNewLength>aDest.mCapacity) {
nsStr theTempStr;
nsStr::Initialize(theTempStr,aDest.mCharSize);
result=EnsureCapacity(theTempStr,aNewLength);
if(result) {
if(aDest.mLength) {
Append(theTempStr,aDest,0,aDest.mLength);
}
Free(aDest);
aDest.mStr = theTempStr.mStr;
theTempStr.mStr=0; //make sure to null this out so that you don't lose the buffer you just stole...
aDest.mLength=theTempStr.mLength;
aDest.mCapacity=theTempStr.mCapacity;
aDest.mOwnsBuffer=theTempStr.mOwnsBuffer;
}
}
return result;
}
/**
* Replaces the contents of aDest with aSource, up to aCount of chars.
* @update gess10/30/98
* @param aDest is the nsStr that gets changed.
* @param aSource is where chars are copied from
* @param aCount is the number of chars copied from aSource
*/
void nsStr::Assign(nsStr& aDest,const nsStr& aSource,PRUint32 anOffset,PRInt32 aCount){
if(&aDest!=&aSource){
Truncate(aDest,0);
Append(aDest,aSource,anOffset,aCount);
}
}
/**
* This method appends the given nsStr to this one. Note that we have to
* pay attention to the underlying char-size of both structs.
* @update gess10/30/98
* @param aDest is the nsStr to be manipulated
* @param aSource is where char are copied from
* @aCount is the number of bytes to be copied
*/
void nsStr::Append(nsStr& aDest,const nsStr& aSource,PRUint32 anOffset,PRInt32 aCount){
if(anOffset<aSource.mLength){
PRUint32 theRealLen=(aCount<0) ? aSource.mLength : MinInt(aCount,aSource.mLength);
PRUint32 theLength=(anOffset+theRealLen<aSource.mLength) ? theRealLen : (aSource.mLength-anOffset);
if(0<theLength){
PRBool isBigEnough=PR_TRUE;
if(aDest.mLength+theLength > aDest.mCapacity) {
isBigEnough=GrowCapacity(aDest,aDest.mLength+theLength);
}
if(isBigEnough) {
//now append new chars, starting at offset
(*gCopyChars[aSource.mCharSize][aDest.mCharSize])(aDest.mStr,aDest.mLength,aSource.mStr,anOffset,theLength);
aDest.mLength+=theLength;
AddNullTerminator(aDest);
}
}
}
}
/**
* This method inserts up to "aCount" chars from a source nsStr into a dest nsStr.
* @update gess10/30/98
* @param aDest is the nsStr that gets changed
* @param aDestOffset is where in aDest the insertion is to occur
* @param aSource is where chars are copied from
* @param aSrcOffset is where in aSource chars are copied from
* @param aCount is the number of chars from aSource to be inserted into aDest
*/
void nsStr::Insert( nsStr& aDest,PRUint32 aDestOffset,const nsStr& aSource,PRUint32 aSrcOffset,PRInt32 aCount){
//there are a few cases for insert:
// 1. You're inserting chars into an empty string (assign)
// 2. You're inserting onto the end of a string (append)
// 3. You're inserting onto the 1..n-1 pos of a string (the hard case).
if(0<aSource.mLength){
if(aDest.mLength){
if(aDestOffset<aDest.mLength){
PRInt32 theRealLen=(aCount<0) ? aSource.mLength : MinInt(aCount,aSource.mLength);
PRInt32 theLength=(aSrcOffset+theRealLen<aSource.mLength) ? theRealLen : (aSource.mLength-aSrcOffset);
if(aSrcOffset<aSource.mLength) {
//here's the only new case we have to handle.
//chars are really being inserted into our buffer...
if(aDest.mLength+theLength > aDest.mCapacity) {
nsStr theTempStr;
nsStr::Initialize(theTempStr,aDest.mCharSize);
PRBool isBigEnough=EnsureCapacity(theTempStr,aDest.mLength+theLength); //grow the temp buffer to the right size
if(isBigEnough) {
if(aDestOffset) {
Append(theTempStr,aDest,0,aDestOffset); //first copy leftmost data...
}
Append(theTempStr,aSource,0,aSource.mLength); //next copy inserted (new) data
PRUint32 theRemains=aDest.mLength-aDestOffset;
if(theRemains) {
Append(theTempStr,aDest,aDestOffset,theRemains); //next copy rightmost data
}
Free(aDest);
aDest.mStr = theTempStr.mStr;
theTempStr.mStr=0; //make sure to null this out so that you don't lose the buffer you just stole...
aDest.mCapacity=theTempStr.mCapacity;
aDest.mOwnsBuffer=theTempStr.mOwnsBuffer;
}
}
else {
//shift the chars right by theDelta...
(*gShiftChars[aDest.mCharSize][KSHIFTRIGHT])(aDest.mStr,aDest.mLength,aDestOffset,theLength);
//now insert new chars, starting at offset
(*gCopyChars[aSource.mCharSize][aDest.mCharSize])(aDest.mStr,aDestOffset,aSource.mStr,aSrcOffset,theLength);
}
//finally, make sure to update the string length...
aDest.mLength+=theLength;
AddNullTerminator(aDest);
}//if
//else nothing to do!
}
else Append(aDest,aSource,0,aCount);
}
else Append(aDest,aSource,0,aCount);
}
}
/**
* This method deletes up to aCount chars from aDest
* @update gess10/30/98
* @param aDest is the nsStr to be manipulated
* @param aDestOffset is where in aDest deletion is to occur
* @param aCount is the number of chars to be deleted in aDest
*/
void nsStr::Delete(nsStr& aDest,PRUint32 aDestOffset,PRUint32 aCount){
if(aDestOffset<aDest.mLength){
PRUint32 theDelta=aDest.mLength-aDestOffset;
PRUint32 theLength=(theDelta<aCount) ? theDelta : aCount;
if(aDestOffset+theLength<aDest.mLength) {
//if you're here, it means we're cutting chars out of the middle of the string...
//so shift the chars left by theLength...
(*gShiftChars[aDest.mCharSize][KSHIFTLEFT])(aDest.mStr,aDest.mLength,aDestOffset,theLength);
aDest.mLength-=theLength;
AddNullTerminator(aDest);
}
else Truncate(aDest,aDestOffset);
}//if
}
/**
* This method truncates the given nsStr at given offset
* @update gess10/30/98
* @param aDest is the nsStr to be truncated
* @param aDestOffset is where in aDest truncation is to occur
*/
void nsStr::Truncate(nsStr& aDest,PRUint32 aDestOffset){
if(aDestOffset<aDest.mLength){
aDest.mLength=aDestOffset;
AddNullTerminator(aDest);
}
}
/**
* This method forces the given string to upper or lowercase
* @update gess1/7/99
* @param aDest is the string you're going to change
* @param aToUpper: if TRUE, then we go uppercase, otherwise we go lowercase
* @return
*/
void nsStr::ChangeCase(nsStr& aDest,PRBool aToUpper) {
// somehow UnicharUtil return failed, fallback to the old ascii only code
gCaseConverters[aDest.mCharSize](aDest.mStr,aDest.mLength,aToUpper);
}
/**
*
* @update gess1/7/99
* @param
* @return
*/
void nsStr::Trim(nsStr& aDest,const char* aSet,PRBool aEliminateLeading,PRBool aEliminateTrailing){
if((aDest.mLength>0) && aSet){
PRInt32 theIndex=-1;
PRInt32 theMax=aDest.mLength;
PRInt32 theSetLen=nsCRT::strlen(aSet);
if(aEliminateLeading) {
while(++theIndex<=theMax) {
PRUnichar theChar=GetCharAt(aDest,theIndex);
PRInt32 thePos=gFindChars[eOneByte](aSet,theSetLen,0,theChar,PR_FALSE);
if(kNotFound==thePos)
break;
}
if(0<theIndex) {
if(theIndex<theMax) {
Delete(aDest,0,theIndex);
}
else Truncate(aDest,0);
}
}
if(aEliminateTrailing) {
theIndex=aDest.mLength;
PRInt32 theNewLen=theIndex;
while(--theIndex>0) {
PRUnichar theChar=GetCharAt(aDest,theIndex); //read at end now...
PRInt32 thePos=gFindChars[eOneByte](aSet,theSetLen,0,theChar,PR_FALSE);
if(kNotFound<thePos)
theNewLen=theIndex;
else break;
}
if(theNewLen<theMax) {
Truncate(aDest,theNewLen);
}
}
}
}
/**
*
* @update gess1/7/99
* @param
* @return
*/
void nsStr::CompressSet(nsStr& aDest,const char* aSet,PRBool aEliminateLeading,PRBool aEliminateTrailing){
Trim(aDest,aSet,aEliminateLeading,aEliminateTrailing);
PRUint32 aNewLen=gCompressChars[aDest.mCharSize](aDest.mStr,aDest.mLength,aSet);
aDest.mLength=aNewLen;
}
/**
*
* @update gess1/7/99
* @param
* @return
*/
void nsStr::StripChars(nsStr& aDest,const char* aSet){
if((0<aDest.mLength) && (aSet)) {
PRUint32 aNewLen=gStripChars[aDest.mCharSize](aDest.mStr,aDest.mLength,aSet);
aDest.mLength=aNewLen;
}
}
/**************************************************************
Searching methods...
**************************************************************/
/**
* This searches aDest for a given substring
*
* @update gess 3/25/98
* @param aDest string to search
* @param aTarget is the substring you're trying to find.
* @param aIgnorecase indicates case sensitivity of search
* @param anOffset tells us where to start the search
* @return index in aDest where member of aSet occurs, or -1 if not found
*/
PRInt32 nsStr::FindSubstr(const nsStr& aDest,const nsStr& aTarget, PRBool aIgnoreCase,PRInt32 anOffset) {
// NS_PRECONDITION(aTarget.mLength!=1,kCallFindChar);
PRInt32 result=kNotFound;
if((0<aDest.mLength) && (anOffset<(PRInt32)aDest.mLength)) {
PRInt32 theMax=aDest.mLength-aTarget.mLength;
PRInt32 index=(0<=anOffset) ? anOffset : 0;
if((aDest.mLength>=aTarget.mLength) && (aTarget.mLength>0) && (index>=0)){
PRInt32 theTargetMax=aTarget.mLength;
while(index<=theMax) {
PRInt32 theSubIndex=-1;
PRBool matches=PR_TRUE;
while((++theSubIndex<theTargetMax) && (matches)){
PRUnichar theChar=(aIgnoreCase) ? nsCRT::ToLower(GetCharAt(aDest,index+theSubIndex)) : GetCharAt(aDest,index+theSubIndex);
PRUnichar theTargetChar=(aIgnoreCase) ? nsCRT::ToLower(GetCharAt(aTarget,theSubIndex)) : GetCharAt(aTarget,theSubIndex);
matches=PRBool(theChar==theTargetChar);
}
if(matches) {
result=index;
break;
}
index++;
} //while
}//if
}//if
return result;
}
/**
* This searches aDest for a given character
*
* @update gess 3/25/98
* @param aDest string to search
* @param char is the character you're trying to find.
* @param aIgnorecase indicates case sensitivity of search
* @param anOffset tells us where to start the search
* @return index in aDest where member of aSet occurs, or -1 if not found
*/
PRInt32 nsStr::FindChar(const nsStr& aDest,PRUnichar aChar, PRBool aIgnoreCase,PRInt32 anOffset) {
PRInt32 result=kNotFound;
if((0<aDest.mLength) && (anOffset<(PRInt32)aDest.mLength)) {
PRUint32 index=(0<=anOffset) ? (PRUint32)anOffset : 0;
result=gFindChars[aDest.mCharSize](aDest.mStr,aDest.mLength,index,aChar,aIgnoreCase);
}
return result;
}
/**
* This searches aDest for a character found in aSet.
*
* @update gess 3/25/98
* @param aDest string to search
* @param aSet contains a list of chars to be searched for
* @param aIgnorecase indicates case sensitivity of search
* @param anOffset tells us where to start the search
* @return index in aDest where member of aSet occurs, or -1 if not found
*/
PRInt32 nsStr::FindCharInSet(const nsStr& aDest,const nsStr& aSet,PRBool aIgnoreCase,PRInt32 anOffset) {
//NS_PRECONDITION(aSet.mLength!=1,kCallFindChar);
PRInt32 index=(0<=anOffset) ? anOffset-1 : -1;
PRInt32 thePos;
//Note that the search is inverted here. We're scanning aDest, one char at a time
//but doing the search against the given set. That's why we use 0 as the offset below.
if((0<aDest.mLength) && (0<aSet.mLength)){
while(++index<(PRInt32)aDest.mLength) {
PRUnichar theChar=GetCharAt(aDest,index);
thePos=gFindChars[aSet.mCharSize](aSet.mStr,aSet.mLength,0,theChar,aIgnoreCase);
if(kNotFound!=thePos)
return index;
} //while
}
return kNotFound;
}
/**************************************************************
Reverse Searching methods...
**************************************************************/
/**
* This searches aDest (in reverse) for a given substring
*
* @update gess 3/25/98
* @param aDest string to search
* @param aTarget is the substring you're trying to find.
* @param aIgnorecase indicates case sensitivity of search
* @param anOffset tells us where to start the search (counting from left)
* @return index in aDest where member of aSet occurs, or -1 if not found
*/
PRInt32 nsStr::RFindSubstr(const nsStr& aDest,const nsStr& aTarget, PRBool aIgnoreCase,PRInt32 anOffset) {
//NS_PRECONDITION(aTarget.mLength!=1,kCallRFindChar);
PRInt32 result=kNotFound;
if((0<aDest.mLength) && (anOffset<(PRInt32)aDest.mLength)) {
PRInt32 index=(0<=anOffset) ? anOffset : aDest.mLength-1;
if((aDest.mLength>=aTarget.mLength) && (aTarget.mLength>0) && (index>=0)){
nsStr theCopy;
nsStr::Initialize(theCopy,eOneByte);
nsStr::Assign(theCopy,aTarget,0,aTarget.mLength);
if(aIgnoreCase){
nsStr::ChangeCase(theCopy,PR_FALSE); //force to lowercase
}
PRInt32 theTargetMax=theCopy.mLength;
while(index>=0) {
PRInt32 theSubIndex=-1;
PRBool matches=PR_FALSE;
if(index+theCopy.mLength<=aDest.mLength) {
matches=PR_TRUE;
while((++theSubIndex<theTargetMax) && (matches)){
PRUnichar theDestChar=(aIgnoreCase) ? nsCRT::ToLower(GetCharAt(aDest,index+theSubIndex)) : GetCharAt(aDest,index+theSubIndex);
PRUnichar theTargetChar=GetCharAt(theCopy,theSubIndex);
matches=PRBool(theDestChar==theTargetChar);
} //while
} //if
if(matches) {
result=index;
break;
}
index--;
} //while
nsStr::Destroy(theCopy);
}//if
}//if
return result;
}
/**
* This searches aDest (in reverse) for a given character
*
* @update gess 3/25/98
* @param aDest string to search
* @param char is the character you're trying to find.
* @param aIgnorecase indicates case sensitivity of search
* @param anOffset tells us where to start the search
* @return index in aDest where member of aSet occurs, or -1 if not found
*/
PRInt32 nsStr::RFindChar(const nsStr& aDest,PRUnichar aChar, PRBool aIgnoreCase,PRInt32 anOffset) {
PRInt32 result=kNotFound;
if((0<aDest.mLength) && (anOffset<(PRInt32)aDest.mLength)) {
PRUint32 index=(0<=anOffset) ? anOffset : aDest.mLength-1;
result=gRFindChars[aDest.mCharSize](aDest.mStr,aDest.mLength,index,aChar,aIgnoreCase);
}
return result;
}
/**
* This searches aDest (in reverese) for a character found in aSet.
*
* @update gess 3/25/98
* @param aDest string to search
* @param aSet contains a list of chars to be searched for
* @param aIgnorecase indicates case sensitivity of search
* @param anOffset tells us where to start the search
* @return index in aDest where member of aSet occurs, or -1 if not found
*/
PRInt32 nsStr::RFindCharInSet(const nsStr& aDest,const nsStr& aSet,PRBool aIgnoreCase,PRInt32 anOffset) {
//NS_PRECONDITION(aSet.mLength!=1,kCallRFindChar);
PRInt32 index=(0<=anOffset) ? anOffset : aDest.mLength;
PRInt32 thePos;
//note that the search is inverted here. We're scanning aDest, one char at a time
//but doing the search against the given set. That's why we use 0 as the offset below.
if(0<aDest.mLength) {
while(--index>=0) {
PRUnichar theChar=GetCharAt(aDest,index);
thePos=gFindChars[aSet.mCharSize](aSet.mStr,aSet.mLength,0,theChar,aIgnoreCase);
if(kNotFound!=thePos)
return index;
} //while
}
return kNotFound;
}
/**
* Compare source and dest strings, up to an (optional max) number of chars
* @param aDest is the first str to compare
* @param aSource is the second str to compare
* @param aCount -- if (-1), then we use length of longer string; if (0<aCount) then it gives the max # of chars to compare
* @param aIgnorecase tells us whether to search with case sensitivity
* @return aDest<aSource=-1;aDest==aSource==0;aDest>aSource=1
*/
PRInt32 nsStr::Compare(const nsStr& aDest,const nsStr& aSource,PRInt32 aCount,PRBool aIgnoreCase) {
PRInt32 result=0;
if(aCount) {
PRInt32 minlen=(aSource.mLength<aDest.mLength) ? aSource.mLength : aDest.mLength;
if(0==minlen) {
if ((aDest.mLength == 0) && (aSource.mLength == 0))
return 0;
if (aDest.mLength == 0)
return -1;
return 1;
}
PRInt32 maxlen=(aSource.mLength<aDest.mLength) ? aDest.mLength : aSource.mLength;
aCount = (aCount<0) ? maxlen : MinInt(aCount,maxlen);
result=(*gCompare[aDest.mCharSize][aSource.mCharSize])(aDest.mStr,aSource.mStr,aCount,aIgnoreCase);
}
return result;
}
//----------------------------------------------------------------------------------------
PRBool nsStr::Alloc(nsStr& aDest,PRUint32 aCount) {
static int mAllocCount=0;
mAllocCount++;
//we're given the acount value in charunits; now scale up to next multiple.
PRUint32 theNewCapacity=kDefaultStringSize;
while(theNewCapacity<aCount){
theNewCapacity<<=1;
}
aDest.mCapacity=theNewCapacity++;
PRUint32 theSize=(theNewCapacity<<aDest.mCharSize);
aDest.mStr = (char*)nsAllocator::Alloc(theSize);
PRBool result=PR_FALSE;
if(aDest.mStr) {
aDest.mOwnsBuffer=1;
result=PR_TRUE;
}
return result;
}
PRBool nsStr::Free(nsStr& aDest){
if(aDest.mStr){
if(aDest.mOwnsBuffer){
nsAllocator::Free(aDest.mStr);
}
aDest.mStr=0;
aDest.mOwnsBuffer=0;
return PR_TRUE;
}
return PR_FALSE;
}
PRBool nsStr::Realloc(nsStr& aDest,PRUint32 aCount){
nsStr temp;
memcpy(&temp,&aDest,sizeof(aDest));
PRBool result=Alloc(temp,aCount);
if(result) {
Free(aDest);
aDest.mStr=temp.mStr;
aDest.mCapacity=temp.mCapacity;
aDest.mOwnsBuffer=temp.mOwnsBuffer;
}
return result;
}
//----------------------------------------------------------------------------------------
CBufDescriptor::CBufDescriptor(char* aString,PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength) {
mBuffer=aString;
mCharSize=eOneByte;
mStackBased=aStackBased;
mIsConst=PR_FALSE;
mLength=mCapacity=0;
if(aString && aCapacity>1) {
mCapacity=aCapacity-1;
mLength=(-1==aLength) ? strlen(aString) : aLength;
if(mLength>PRInt32(mCapacity))
mLength=mCapacity;
}
}
CBufDescriptor::CBufDescriptor(const char* aString,PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength) {
mBuffer=(char*)aString;
mCharSize=eOneByte;
mStackBased=aStackBased;
mIsConst=PR_TRUE;
mLength=mCapacity=0;
if(aString && aCapacity>1) {
mCapacity=aCapacity-1;
mLength=(-1==aLength) ? strlen(aString) : aLength;
if(mLength>PRInt32(mCapacity))
mLength=mCapacity;
}
}
CBufDescriptor::CBufDescriptor(PRUnichar* aString,PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength) {
mBuffer=(char*)aString;
mCharSize=eTwoByte;
mStackBased=aStackBased;
mLength=mCapacity=0;
mIsConst=PR_FALSE;
if(aString && aCapacity>1) {
mCapacity=aCapacity-1;
mLength=(-1==aLength) ? nsCRT::strlen(aString) : aLength;
if(mLength>PRInt32(mCapacity))
mLength=mCapacity;
}
}
CBufDescriptor::CBufDescriptor(const PRUnichar* aString,PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength) {
mBuffer=(char*)aString;
mCharSize=eTwoByte;
mStackBased=aStackBased;
mLength=mCapacity=0;
mIsConst=PR_TRUE;
if(aString && aCapacity>1) {
mCapacity=aCapacity-1;
mLength=(-1==aLength) ? nsCRT::strlen(aString) : aLength;
if(mLength>PRInt32(mCapacity))
mLength=mCapacity;
}
}
//----------------------------------------------------------------------------------------

View File

@@ -1,450 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/***********************************************************************
MODULE NOTES:
1. There are two philosophies to building string classes:
A. Hide the underlying buffer & offer API's allow indirect iteration
B. Reveal underlying buffer, risk corruption, but gain performance
We chose the option B for performance reasons.
2 Our internal buffer always holds capacity+1 bytes.
The nsStr struct is a simple structure (no methods) that contains
the necessary info to be described as a string. This simple struct
is manipulated by the static methods provided in this class.
(Which effectively makes this a library that works on structs).
There are also object-based versions called nsString and nsAutoString
which use nsStr but makes it look at feel like an object.
***********************************************************************/
/***********************************************************************
ASSUMPTIONS:
1. nsStrings and nsAutoString are always null terminated.
2. If you try to set a null char (via SetChar()) a new length is set
3. nsCStrings can be upsampled into nsString without data loss
4. Char searching is faster than string searching. Use char interfaces
if your needs will allow it.
5. It's easy to use the stack for nsAutostring buffer storage (fast too!).
See the CBufDescriptor class in this file.
6. It's ONLY ok to provide non-null-terminated buffers to Append() and Insert()
provided you specify a 0<n value for the optional count argument.
7. Downsampling from nsString to nsCString is lossy -- avoid it if possible!
8. Calls to ToNewCString() and ToNewUnicode() should be matched with calls to Recycle().
***********************************************************************/
/**********************************************************************************
AND NOW FOR SOME GENERAL DOCUMENTATION ON STRING USAGE...
The fundamental datatype in the string library is nsStr. It's a structure that
provides the buffer storage and meta-info. It also provides a C-style library
of functions for direct manipulation (for those of you who prefer K&R to Bjarne).
Here's a diagram of the class hierarchy:
nsStr
|___nsString
| |
| ------nsAutoString
|
|___nsCString
|
------nsCAutoString
Why so many string classes? The 4 variants give you the control you need to
determine the best class for your purpose. There are 2 dimensions to this
flexibility: 1) stack vs. heap; and 2) 1-byte chars vs. 2-byte chars.
Note: While nsAutoString and nsCAutoString begin life using stack-based storage,
they may not stay that way. Like all nsString classes, autostrings will
automatically grow to contain the data you provide. When autostrings
grow beyond their intrinsic buffer, they switch to heap based allocations.
(We avoid alloca to avoid considerable platform difficulties; see the
GNU documentation for more details).
I should also briefly mention that all the string classes use a "memory agent"
object to perform memory operations. This class proxies the standard nsAllocator
for actual memory calls, but knows the structure of nsStr making heap operations
more localized.
CHOOSING A STRING CLASS:
In order to choose a string class for you purpose, use this handy table:
heap-based stack-based
-----------------------------------
ascii data | nsCString nsCAutoString |
|----------------------------------
unicode data | nsString nsAutoString |
-----------------------------------
Note: The i18n folks will stenuously object if we get too carried away with the
use of nsCString's that pass interface boundaries. Try to limit your
use of these to external interfaces that demand them, or for your own
private purposes in cases where they'll never be seen by humans.
PERFORMANCE CONSIDERATIONS:
Here are a few tricks to know in order to get better string performance:
1) Try to limit conversions between ascii and unicode; By sticking with nsString
wherever possible your code will be i18n-compliant.
2) Preallocating your string buffer cuts down trips to the allocator. So if you
have need for an arbitrarily large buffer, pre-size it like this:
{
nsString mBuffer;
mBuffer.SetCapacity(aReasonableSize);
}
3) Allocating nsAutoString or nsCAutoString on the heap is memory inefficient
(after all, the whole point is to avoid a heap allocation of the buffer).
4) Consider using an autoString to write into your arbitrarily-sized stack buffers, rather
than it's own buffers.
For example, let's say you're going to call printf() to emit pretty-printed debug output
of your object. You know from experience that the pretty-printed version of your object
exceeds the capacity of an autostring. Ignoring memory considerations, you could simply
use nsCString, appending the stringized version of each of your class's data members.
This will probably result in calls to the heap manager.
But there's a way to do this without necessarily having to call the heap manager.
All you do is declare a stack based buffer and instruct nsCString to use that instead
of it's own internal buffer by using the CBufDescriptor class:
{
char theBuffer[256];
CBufDescritor theBufDecriptor( theBuffer, PR_TRUE, sizeof(theBuffer), 0);
nsCAutoString s3( theBufDescriptor );
s3="HELLO, my name is inigo montoya, you killed my father, prepare to die!.";
}
The assignment statment to s3 will cause the given string to be written to your
stack-based buffer via the normal nsString/nsCString interfaces. Cool, huh?
Note however that just like any other nsStringXXX use, if you write more data
than will fit in the buffer, a visit to the heap manager will be in order.
**********************************************************************************/
#ifndef _nsStr
#define _nsStr
#include "nscore.h"
#include "nsIAllocator.h"
#include <string.h>
//----------------------------------------------------------------------------------------
enum eCharSize {eOneByte=0,eTwoByte=1};
#define kDefaultCharSize eTwoByte
#define kRadix10 (10)
#define kRadix16 (16)
#define kAutoDetect (100)
#define kRadixUnknown (kAutoDetect+1)
const PRInt32 kDefaultStringSize = 64;
const PRInt32 kNotFound = -1;
//----------------------------------------------------------------------------------------
class NS_COM CBufDescriptor {
public:
CBufDescriptor(char* aString, PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength=-1);
CBufDescriptor(const char* aString, PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength=-1);
CBufDescriptor(PRUnichar* aString, PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength=-1);
CBufDescriptor(const PRUnichar* aString,PRBool aStackBased,PRUint32 aCapacity,PRInt32 aLength=-1);
char* mBuffer;
eCharSize mCharSize;
PRUint32 mCapacity;
PRInt32 mLength;
PRBool mStackBased;
PRBool mIsConst;
};
//----------------------------------------------------------------------------------------
struct NS_COM nsStr {
//----------------------------------------------------------------------------------------
nsStr() {
MOZ_COUNT_CTOR(nsStr);
}
~nsStr() {
MOZ_COUNT_DTOR(nsStr);
}
/**
* This method initializes an nsStr for use
*
* @update gess 01/04/99
* @param aString is the nsStr to be initialized
* @param aCharSize tells us the requested char size (1 or 2 bytes)
*/
static void Initialize(nsStr& aDest,eCharSize aCharSize);
/**
* This method initializes an nsStr for use
*
* @update gess 01/04/99
* @param aString is the nsStr to be initialized
* @param aCharSize tells us the requested char size (1 or 2 bytes)
*/
static void Initialize(nsStr& aDest,char* aCString,PRUint32 aCapacity,PRUint32 aLength,eCharSize aCharSize,PRBool aOwnsBuffer);
/**
* This method destroys the given nsStr, and *MAY*
* deallocate it's memory depending on the setting
* of the internal mOwnsBUffer flag.
*
* @update gess 01/04/99
* @param aString is the nsStr to be manipulated
* @param anAgent is the allocator to be used to the nsStr
*/
static void Destroy(nsStr& aDest);
/**
* These methods are where memory allocation/reallocation occur.
*
* @update gess 01/04/99
* @param aString is the nsStr to be manipulated
* @param anAgent is the allocator to be used on the nsStr
* @return
*/
static PRBool EnsureCapacity(nsStr& aString,PRUint32 aNewLength);
static PRBool GrowCapacity(nsStr& aString,PRUint32 aNewLength);
/**
* These methods are used to append content to the given nsStr
*
* @update gess 01/04/99
* @param aDest is the nsStr to be appended to
* @param aSource is the buffer to be copied from
* @param anOffset tells us where in source to start copying
* @param aCount tells us the (max) # of chars to copy
* @param anAgent is the allocator to be used for alloc/free operations
*/
static void Append(nsStr& aDest,const nsStr& aSource,PRUint32 anOffset,PRInt32 aCount);
/**
* These methods are used to assign contents of a source string to dest string
*
* @update gess 01/04/99
* @param aDest is the nsStr to be appended to
* @param aSource is the buffer to be copied from
* @param anOffset tells us where in source to start copying
* @param aCount tells us the (max) # of chars to copy
* @param anAgent is the allocator to be used for alloc/free operations
*/
static void Assign(nsStr& aDest,const nsStr& aSource,PRUint32 anOffset,PRInt32 aCount);
/**
* These methods are used to insert content from source string to the dest nsStr
*
* @update gess 01/04/99
* @param aDest is the nsStr to be appended to
* @param aDestOffset tells us where in dest to start insertion
* @param aSource is the buffer to be copied from
* @param aSrcOffset tells us where in source to start copying
* @param aCount tells us the (max) # of chars to insert
* @param anAgent is the allocator to be used for alloc/free operations
*/
static void Insert( nsStr& aDest,PRUint32 aDestOffset,const nsStr& aSource,PRUint32 aSrcOffset,PRInt32 aCount);
/**
* This method deletes chars from the given str.
* The given allocator may choose to resize the str as well.
*
* @update gess 01/04/99
* @param aDest is the nsStr to be deleted from
* @param aDestOffset tells us where in dest to start deleting
* @param aCount tells us the (max) # of chars to delete
* @param anAgent is the allocator to be used for alloc/free operations
*/
static void Delete(nsStr& aDest,PRUint32 aDestOffset,PRUint32 aCount);
/**
* This method is used to truncate the given string.
* The given allocator may choose to resize the str as well (but it's not likely).
*
* @update gess 01/04/99
* @param aDest is the nsStr to be appended to
* @param aDestOffset tells us where in dest to start insertion
* @param aSource is the buffer to be copied from
* @param aSrcOffset tells us where in source to start copying
* @param anAgent is the allocator to be used for alloc/free operations
*/
static void Truncate(nsStr& aDest,PRUint32 aDestOffset);
/**
* This method is used to perform a case conversion on the given string
*
* @update gess 01/04/99
* @param aDest is the nsStr to be case shifted
* @param toUpper tells us to go upper vs. lower
*/
static void ChangeCase(nsStr& aDest,PRBool aToUpper);
/**
* This method trims chars (given in aSet) from the edges of given buffer
*
* @update gess 01/04/99
* @param aDest is the buffer to be manipulated
* @param aSet tells us which chars to remove from given buffer
* @param aEliminateLeading tells us whether to strip chars from the start of the buffer
* @param aEliminateTrailing tells us whether to strip chars from the start of the buffer
*/
static void Trim(nsStr& aDest,const char* aSet,PRBool aEliminateLeading,PRBool aEliminateTrailing);
/**
* This method compresses duplicate runs of a given char from the given buffer
*
* @update gess 01/04/99
* @param aDest is the buffer to be manipulated
* @param aSet tells us which chars to compress from given buffer
* @param aChar is the replacement char
* @param aEliminateLeading tells us whether to strip chars from the start of the buffer
* @param aEliminateTrailing tells us whether to strip chars from the start of the buffer
*/
static void CompressSet(nsStr& aDest,const char* aSet,PRBool aEliminateLeading,PRBool aEliminateTrailing);
/**
* This method removes all occurances of chars in given set from aDest
*
* @update gess 01/04/99
* @param aDest is the buffer to be manipulated
* @param aSet tells us which chars to compress from given buffer
* @param aChar is the replacement char
* @param aEliminateLeading tells us whether to strip chars from the start of the buffer
* @param aEliminateTrailing tells us whether to strip chars from the start of the buffer
*/
static void StripChars(nsStr& aDest,const char* aSet);
/**
* This method compares the data bewteen two nsStr's
*
* @update gess 01/04/99
* @param aStr1 is the first buffer to be compared
* @param aStr2 is the 2nd buffer to be compared
* @param aCount is the number of chars to compare
* @param aIgnorecase tells us whether to use a case-sensitive comparison
* @return -1,0,1 depending on <,==,>
*/
static PRInt32 Compare(const nsStr& aDest,const nsStr& aSource,PRInt32 aCount,PRBool aIgnoreCase);
/**
* These methods scan the given string for 1 or more chars in a given direction
*
* @update gess 01/04/99
* @param aDest is the nsStr to be searched to
* @param aSource (or aChar) is the substr we're looking to find
* @param aIgnoreCase tells us whether to search in a case-sensitive manner
* @param anOffset tells us where in the dest string to start searching
* @return the index of the source (substr) in dest, or -1 (kNotFound) if not found.
*/
static PRInt32 FindSubstr(const nsStr& aDest,const nsStr& aSource, PRBool aIgnoreCase,PRInt32 anOffset);
static PRInt32 FindChar(const nsStr& aDest,PRUnichar aChar, PRBool aIgnoreCase,PRInt32 anOffset);
static PRInt32 FindCharInSet(const nsStr& aDest,const nsStr& aSet,PRBool aIgnoreCase,PRInt32 anOffset);
static PRInt32 RFindSubstr(const nsStr& aDest,const nsStr& aSource, PRBool aIgnoreCase,PRInt32 anOffset);
static PRInt32 RFindChar(const nsStr& aDest,PRUnichar aChar, PRBool aIgnoreCase,PRInt32 anOffset);
static PRInt32 RFindCharInSet(const nsStr& aDest,const nsStr& aSet,PRBool aIgnoreCase,PRInt32 anOffset);
PRUint32 mLength;
PRUint32 mCapacity;
eCharSize mCharSize;
PRBool mOwnsBuffer;
union {
char* mStr;
PRUnichar* mUStr;
};
private:
static PRBool Alloc(nsStr& aString,PRUint32 aCount);
static PRBool Realloc(nsStr& aString,PRUint32 aCount);
static PRBool Free(nsStr& aString);
};
/**************************************************************
A couple of tiny helper methods used in the string classes.
**************************************************************/
inline PRInt32 MinInt(PRInt32 anInt1,PRInt32 anInt2){
return (anInt1<anInt2) ? anInt1 : anInt2;
}
inline PRInt32 MaxInt(PRInt32 anInt1,PRInt32 anInt2){
return (anInt1<anInt2) ? anInt2 : anInt1;
}
inline void AddNullTerminator(nsStr& aDest) {
if(eTwoByte==aDest.mCharSize)
aDest.mUStr[aDest.mLength]=0;
else aDest.mStr[aDest.mLength]=0;
}
/**
* Return the given buffer to the heap manager. Calls allocator::Free()
* @return string length
*/
inline void Recycle( char* aBuffer) { nsAllocator::Free(aBuffer); }
inline void Recycle( PRUnichar* aBuffer) { nsAllocator::Free(aBuffer); }
/**
* This method is used to access a given char in the given string
*
* @update gess 01/04/99
* @param aDest is the nsStr to be appended to
* @param anIndex tells us where in dest to get the char from
* @return the given char, or 0 if anIndex is out of range
*/
inline PRUnichar GetCharAt(const nsStr& aDest,PRUint32 anIndex){
if(anIndex<aDest.mLength) {
return (eTwoByte==aDest.mCharSize) ? aDest.mUStr[anIndex] : aDest.mStr[anIndex];
}//if
return 0;
}
#endif

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View File

@@ -1,747 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/***********************************************************************
MODULE NOTES:
See nsStr.h for a more general description of string classes.
This version of the nsString class offers many improvements over the
original version:
1. Wide and narrow chars
2. Allocators
3. Much smarter autostrings
4. Subsumable strings
***********************************************************************/
#ifndef _nsCString_
#define _nsCString_
#include "nsString2.h"
#include "prtypes.h"
#include "nscore.h"
#include <stdio.h>
#include "nsStr.h"
#include "nsIAtom.h"
class NS_COM nsSubsumeCStr;
class NS_COM nsCString : public nsStr {
public:
/**
* Default constructor.
*/
nsCString();
/**
* This constructor accepts an isolatin string
* @param aCString is a ptr to a 1-byte cstr
*/
nsCString(const char* aCString,PRInt32 aLength=-1);
/**
* This constructor accepts a unichar string
* @param aCString is a ptr to a 2-byte cstr
*/
nsCString(const PRUnichar* aString,PRInt32 aLength=-1);
/**
* This is a copy constructor that accepts an nsStr
* @param reference to another nsCString
*/
nsCString(const nsStr&);
/**
* This is our copy constructor
* @param reference to another nsCString
*/
nsCString(const nsCString& aString);
/**
* This constructor takes a subsumestr
* @param reference to subsumestr
*/
nsCString(nsSubsumeCStr& aSubsumeStr);
/**
* Destructor
*
*/
virtual ~nsCString();
/**
* Retrieve the length of this string
* @return string length
*/
inline PRInt32 Length() const { return (PRInt32)mLength; }
/**
* Retrieve the size of this string
* @return string length
*/
virtual void SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
/**
* Call this method if you want to force a different string capacity
* @update gess7/30/98
* @param aLength -- contains new length for mStr
* @return
*/
void SetLength(PRUint32 aLength) {
Truncate(aLength);
}
/**
* Sets the new length of the string.
* @param aLength is new string length.
* @return nada
*/
void SetCapacity(PRUint32 aLength);
/**
* This method truncates this string to given length.
*
* @param anIndex -- new length of string
* @return nada
*/
void Truncate(PRInt32 anIndex=0);
/**
* Determine whether or not the characters in this
* string are in sorted order.
*
* @return TRUE if ordered.
*/
PRBool IsOrdered(void) const;
/**
* Determine whether or not this string has a length of 0
*
* @return TRUE if empty.
*/
PRBool IsEmpty(void) const {
return PRBool(0==mLength);
}
/**********************************************************************
Accessor methods...
*********************************************************************/
/**
* Retrieve const ptr to internal buffer; DO NOT TRY TO FREE IT!
*/
const char* GetBuffer(void) const;
/**
* Get nth character.
*/
PRUnichar operator[](PRUint32 anIndex) const;
PRUnichar CharAt(PRUint32 anIndex) const;
PRUnichar First(void) const;
PRUnichar Last(void) const;
PRBool SetCharAt(PRUnichar aChar,PRUint32 anIndex);
/**********************************************************************
String creation methods...
*********************************************************************/
/**
* Create a new string by appending given string to this
* @param aString -- 2nd string to be appended
* @return new string
*/
nsSubsumeCStr operator+(const nsCString& aString);
/**
* create a new string by adding this to the given char*.
* @param aCString is a ptr to cstring to be added to this
* @return newly created string
*/
nsSubsumeCStr operator+(const char* aCString);
/**
* create a new string by adding this to the given char.
* @param aChar is a char to be added to this
* @return newly created string
*/
nsSubsumeCStr operator+(PRUnichar aChar);
nsSubsumeCStr operator+(char aChar);
/**********************************************************************
Lexomorphic transforms...
*********************************************************************/
/**
* Converts chars in this to lowercase
* @update gess 7/27/98
*/
void ToLowerCase();
/**
* Converts chars in this to lowercase, and
* stores them in aOut
* @update gess 7/27/98
* @param aOut is a string to contain result
*/
void ToLowerCase(nsCString& aString) const;
/**
* Converts chars in this to uppercase
* @update gess 7/27/98
*/
void ToUpperCase();
/**
* Converts chars in this to lowercase, and
* stores them in a given output string
* @update gess 7/27/98
* @param aOut is a string to contain result
*/
void ToUpperCase(nsCString& aString) const;
/**
* This method is used to remove all occurances of the
* characters found in aSet from this string.
*
* @param aSet -- characters to be cut from this
* @return *this
*/
nsCString& StripChars(const char* aSet);
nsCString& StripChar(char aChar);
/**
* This method strips whitespace throughout the string
*
* @return this
*/
nsCString& StripWhitespace();
/**
* swaps occurence of 1 string for another
*
* @return this
*/
nsCString& ReplaceChar(PRUnichar aOldChar,PRUnichar aNewChar);
nsCString& ReplaceChar(const char* aSet,PRUnichar aNewChar);
PRInt32 CountChar(PRUnichar aChar);
/**
* This method trims characters found in aTrimSet from
* either end of the underlying string.
*
* @param aTrimSet -- contains chars to be trimmed from
* both ends
* @return this
*/
nsCString& Trim(const char* aSet,PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE);
/**
* This method strips whitespace from string.
* You can control whether whitespace is yanked from
* start and end of string as well.
*
* @param aEliminateLeading controls stripping of leading ws
* @param aEliminateTrailing controls stripping of trailing ws
* @return this
*/
nsCString& CompressSet(const char* aSet, PRUnichar aChar,PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE);
/**
* This method strips whitespace from string.
* You can control whether whitespace is yanked from
* start and end of string as well.
*
* @param aEliminateLeading controls stripping of leading ws
* @param aEliminateTrailing controls stripping of trailing ws
* @return this
*/
nsCString& CompressWhitespace( PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE);
/**********************************************************************
string conversion methods...
*********************************************************************/
operator char*() {return mStr;}
operator const char*() const {return (const char*)mStr;}
/**
* This method constructs a new nsCString that is a clone
* of this string.
*
*/
nsCString* ToNewString() const;
/**
* Creates an ISOLatin1 clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @return ptr to new isolatin1 string
*/
char* ToNewCString() const;
/**
* Creates a unicode clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @return ptr to new unicode string
*/
PRUnichar* ToNewUnicode() const;
/**
* Copies data from internal buffer onto given char* buffer
* NOTE: This only copies as many chars as will fit in given buffer (clips)
* @param aBuf is the buffer where data is stored
* @param aBuflength is the max # of chars to move to buffer
* @return ptr to given buffer
*/
char* ToCString(char* aBuf,PRUint32 aBufLength,PRUint32 anOffset=0) const;
/**
* Perform string to float conversion.
* @param aErrorCode will contain error if one occurs
* @return float rep of string value
*/
float ToFloat(PRInt32* aErrorCode) const;
/**
* Try to derive the radix from the value contained in this string
* @return kRadix10, kRadix16 or kAutoDetect (meaning unknown)
*/
PRUint32 DetermineRadix(void);
/**
* Perform string to int conversion.
* @param aErrorCode will contain error if one occurs
* @return int rep of string value
*/
PRInt32 ToInteger(PRInt32* aErrorCode,PRUint32 aRadix=kRadix10) const;
/**********************************************************************
String manipulation methods...
*********************************************************************/
/**
* Functionally equivalent to assign or operator=
*
*/
nsCString& SetString(const char* aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}
nsCString& SetString(const nsStr& aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}
/**
* assign given string to this string
* @param aStr: buffer to be assigned to this
* @param alength is the length of the given str (or -1)
if you want me to determine its length
* @return this
*/
nsCString& Assign(const nsStr& aString,PRInt32 aCount=-1);
nsCString& Assign(const char* aString,PRInt32 aCount=-1);
nsCString& Assign(const PRUnichar* aString,PRInt32 aCount=-1);
nsCString& Assign(PRUnichar aChar);
nsCString& Assign(char aChar);
/**
* here come a bunch of assignment operators...
* @param aString: string to be added to this
* @return this
*/
nsCString& operator=(const nsCString& aString) {return Assign(aString);}
nsCString& operator=(const nsStr& aString) {return Assign(aString);}
nsCString& operator=(PRUnichar aChar) {return Assign(aChar);}
nsCString& operator=(char aChar) {return Assign(aChar);}
nsCString& operator=(const char* aCString) {return Assign(aCString);}
nsCString& operator=(const PRUnichar* aString) {return Assign(aString);}
#ifdef AIX
nsCString& operator=(const nsSubsumeCStr& aSubsumeString); // AIX requires a const here
#else
nsCString& operator=(nsSubsumeCStr& aSubsumeString);
#endif
/**
* Here's a bunch of methods that append varying types...
* @param various...
* @return this
*/
nsCString& operator+=(const nsCString& aString){return Append(aString,aString.mLength);}
nsCString& operator+=(const char* aCString) {return Append(aCString);}
nsCString& operator+=(PRUnichar aChar){return Append(aChar);}
nsCString& operator+=(char aChar){return Append(aChar);}
/*
* Appends n characters from given string to this,
* This version computes the length of your given string
*
* @param aString is the source to be appended to this
* @return number of chars copied
*/
nsCString& Append(const nsCString& aString) {return Append(aString,aString.mLength);}
/*
* Appends n characters from given string to this,
*
* @param aString is the source to be appended to this
* @param aCount -- number of chars to copy; -1 tells us to compute the strlen for you
* @return number of chars copied
*/
nsCString& Append(const nsCString& aString,PRInt32 aCount);
nsCString& Append(const nsStr& aString,PRInt32 aCount=-1);
nsCString& Append(const char* aString,PRInt32 aCount=-1);
nsCString& Append(PRUnichar aChar);
nsCString& Append(char aChar);
nsCString& Append(PRInt32 aInteger,PRInt32 aRadix=10); //radix=8,10 or 16
nsCString& Append(float aFloat);
/*
* Copies n characters from this string to given string,
* starting at the leftmost offset.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @return number of chars copied
*/
PRUint32 Left(nsCString& aCopy,PRInt32 aCount) const;
/*
* Copies n characters from this string to given string,
* starting at the given offset.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @param anOffset -- position where copying begins
* @return number of chars copied
*/
PRUint32 Mid(nsCString& aCopy,PRUint32 anOffset,PRInt32 aCount) const;
/*
* Copies n characters from this string to given string,
* starting at rightmost char.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @return number of chars copied
*/
PRUint32 Right(nsCString& aCopy,PRInt32 aCount) const;
/*
* This method inserts n chars from given string into this
* string at str[anOffset].
*
* @param aCopy -- String to be inserted into this
* @param anOffset -- insertion position within this str
* @param aCount -- number of chars to be copied from aCopy
* @return number of chars inserted into this.
*/
nsCString& Insert(const nsCString& aCopy,PRUint32 anOffset,PRInt32 aCount=-1);
/**
* Insert a given string into this string at
* a specified offset.
*
* @param aString* to be inserted into this string
* @param anOffset is insert pos in str
* @return the number of chars inserted into this string
*/
nsCString& Insert(const char* aChar,PRUint32 anOffset,PRInt32 aCount=-1);
/**
* Insert a single char into this string at
* a specified offset.
*
* @param character to be inserted into this string
* @param anOffset is insert pos in str
* @return the number of chars inserted into this string
*/
nsCString& Insert(PRUnichar aChar,PRUint32 anOffset);
nsCString& Insert(char aChar,PRUint32 anOffset);
/*
* This method is used to cut characters in this string
* starting at anOffset, continuing for aCount chars.
*
* @param anOffset -- start pos for cut operation
* @param aCount -- number of chars to be cut
* @return *this
*/
nsCString& Cut(PRUint32 anOffset,PRInt32 aCount);
/**********************************************************************
Searching methods...
*********************************************************************/
/**
* Search for given character within this string.
* This method does so by using a binary search,
* so your string HAD BETTER BE ORDERED!
*
* @param aChar is the unicode char to be found
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 BinarySearch(PRUnichar aChar) const;
/**
* Search for given substring within this string
*
* @param aString is substring to be sought in this
* @param aIgnoreCase selects case sensitivity
* @param anOffset tells us where in this strig to start searching
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 Find(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 Find(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 Find(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* Search for given char within this string
*
* @param aString is substring to be sought in this
* @param anOffset tells us where in this strig to start searching
* @param aIgnoreCase selects case sensitivity
* @return find pos in string, or -1 (kNotFound)
*/
PRInt32 FindChar(PRUnichar aChar,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* This method searches this string for the first character
* found in the given charset
* @param aString contains set of chars to be found
* @param anOffset tells us where to start searching in this
* @return -1 if not found, else the offset in this
*/
PRInt32 FindCharInSet(const char* aString,PRInt32 anOffset=-1) const;
PRInt32 FindCharInSet(const PRUnichar* aString,PRInt32 anOffset=-1) const;
PRInt32 FindCharInSet(const nsStr& aString,PRInt32 anOffset=-1) const;
/**
* This methods scans the string backwards, looking for the given string
* @param aString is substring to be sought in this
* @param aIgnoreCase tells us whether or not to do caseless compare
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 RFind(const char* aCString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 RFind(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 RFind(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* Search for given char within this string
*
* @param aString is substring to be sought in this
* @param anOffset tells us where in this strig to start searching
* @param aIgnoreCase selects case sensitivity
* @return find pos in string, or -1 (kNotFound)
*/
PRInt32 RFindChar(PRUnichar aChar,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* This method searches this string for the last character
* found in the given string
* @param aString contains set of chars to be found
* @param anOffset tells us where to start searching in this
* @return -1 if not found, else the offset in this
*/
PRInt32 RFindCharInSet(const char* aString,PRInt32 anOffset=-1) const;
PRInt32 RFindCharInSet(const PRUnichar* aString,PRInt32 anOffset=-1) const;
PRInt32 RFindCharInSet(const nsStr& aString,PRInt32 anOffset=-1) const;
/**********************************************************************
Comparison methods...
*********************************************************************/
/**
* Compares a given string type to this string.
* @update gess 7/27/98
* @param S is the string to be compared
* @param aIgnoreCase tells us how to treat case
* @param aCount tells us how many chars to compare
* @return -1,0,1
*/
virtual PRInt32 Compare(const nsStr &aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
virtual PRInt32 Compare(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
virtual PRInt32 Compare(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
/**
* These methods compare a given string type to this one
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator==(const nsStr &aString) const;
PRBool operator==(const char* aString) const;
PRBool operator==(const PRUnichar* aString) const;
/**
* These methods perform a !compare of a given string type to this
* @param aString is the string to be compared to this
* @return TRUE
*/
PRBool operator!=(const nsStr &aString) const;
PRBool operator!=(const char* aString) const;
PRBool operator!=(const PRUnichar* aString) const;
/**
* These methods test if a given string is < than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator<(const nsStr &aString) const;
PRBool operator<(const char* aString) const;
PRBool operator<(const PRUnichar* aString) const;
/**
* These methods test if a given string is > than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator>(const nsStr &S) const;
PRBool operator>(const char* aString) const;
PRBool operator>(const PRUnichar* aString) const;
/**
* These methods test if a given string is <= than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator<=(const nsStr &S) const;
PRBool operator<=(const char* aString) const;
PRBool operator<=(const PRUnichar* aString) const;
/**
* These methods test if a given string is >= than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator>=(const nsStr &S) const;
PRBool operator>=(const char* aString) const;
PRBool operator>=(const PRUnichar* aString) const;
/**
* Compare this to given string; note that we compare full strings here.
* The optional length argument just lets us know how long the given string is.
* If you provide a length, it is compared to length of this string as an
* optimization.
*
* @param aString -- the string to compare to this
* @param aCount -- number of chars in given string you want to compare
* @return TRUE if equal
*/
PRBool Equals(const nsString &aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool EqualsIgnoreCase(const nsStr& aString) const;
PRBool EqualsIgnoreCase(const char* aString,PRInt32 aCount=-1) const;
PRBool EqualsIgnoreCase(const PRUnichar* aString,PRInt32 aCount=-1) const;
static void Recycle(nsCString* aString);
static nsCString* CreateString(void);
};
extern NS_COM int fputs(const nsCString& aString, FILE* out);
//ostream& operator<<(ostream& aStream,const nsCString& aString);
//virtual void DebugDump(ostream& aStream) const;
/**************************************************************
Here comes the AutoString class which uses internal memory
(typically found on the stack) for its default buffer.
If the buffer needs to grow, it gets reallocated on the heap.
**************************************************************/
class NS_COM nsCAutoString : public nsCString {
public:
nsCAutoString();
nsCAutoString(const char* aString,PRInt32 aLength=-1);
nsCAutoString(const CBufDescriptor& aBuffer);
nsCAutoString(const PRUnichar* aString,PRInt32 aLength=-1);
nsCAutoString(const nsStr& aString);
nsCAutoString(const nsCAutoString& aString);
#ifdef AIX
nsCAutoString(const nsSubsumeCStr& aSubsumeStr); // AIX requires a const
#else
nsCAutoString(nsSubsumeCStr& aSubsumeStr);
#endif // AIX
nsCAutoString(PRUnichar aChar);
virtual ~nsCAutoString();
nsCAutoString& operator=(const nsCString& aString) {nsCString::Assign(aString); return *this;}
nsCAutoString& operator=(const char* aCString) {nsCString::Assign(aCString); return *this;}
nsCAutoString& operator=(PRUnichar aChar) {nsCString::Assign(aChar); return *this;}
nsCAutoString& operator=(char aChar) {nsCString::Assign(aChar); return *this;}
/**
* Retrieve the size of this string
* @return string length
*/
virtual void SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
char mBuffer[kDefaultStringSize];
};
/***************************************************************
The subsumestr class is very unusual.
It differs from a normal string in that it doesn't use normal
copy semantics when another string is assign to this.
Instead, it "steals" the contents of the source string.
This is very handy for returning nsString classes as part of
an operator+(...) for example, in that it cuts down the number
of copy operations that must occur.
You should probably not use this class unless you really know
what you're doing.
***************************************************************/
class NS_COM nsSubsumeCStr : public nsCString {
public:
nsSubsumeCStr(nsStr& aString);
nsSubsumeCStr(PRUnichar* aString,PRBool assumeOwnership,PRInt32 aLength=-1);
nsSubsumeCStr(char* aString,PRBool assumeOwnership,PRInt32 aLength=-1);
};
#endif

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@@ -1,840 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/***********************************************************************
MODULE NOTES:
See nsStr.h for a more general description of string classes.
This version of the nsString class offers many improvements over the
original version:
1. Wide and narrow chars
2. Allocators
3. Much smarter autostrings
4. Subsumable strings
***********************************************************************/
#ifndef _nsString_
#define _nsString_
#include "prtypes.h"
#include "nscore.h"
#include <stdio.h>
#include "nsString.h"
#include "nsIAtom.h"
#include "nsStr.h"
#include "nsCRT.h"
class nsISizeOfHandler;
#define nsString2 nsString
#define nsAutoString2 nsAutoString
class NS_COM nsSubsumeStr;
class NS_COM nsString : public nsStr {
public:
/**
* Default constructor.
*/
nsString();
/**
* This constructor accepts an isolatin string
* @param aCString is a ptr to a 1-byte cstr
*/
nsString(const char* aCString);
/**
* This constructor accepts a unichar string
* @param aCString is a ptr to a 2-byte cstr
*/
nsString(const PRUnichar* aString);
/**
* This is a copy constructor that accepts an nsStr
* @param reference to another nsString
*/
nsString(const nsStr&);
/**
* This is our copy constructor
* @param reference to another nsString
*/
nsString(const nsString& aString);
/**
* This constructor takes a subsumestr
* @param reference to subsumestr
*/
nsString(nsSubsumeStr& aSubsumeStr);
/**
* Destructor
*
*/
virtual ~nsString();
/**
* Retrieve the length of this string
* @return string length
*/
inline PRInt32 Length() const { return (PRInt32)mLength; }
/**
* Retrieve the size of this string
* @return string length
*/
virtual void SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
/**
* Call this method if you want to force a different string length
* @update gess7/30/98
* @param aLength -- contains new length for mStr
* @return
*/
void SetLength(PRUint32 aLength) {
Truncate(aLength);
}
/**
* Sets the new length of the string.
* @param aLength is new string length.
* @return nada
*/
void SetCapacity(PRUint32 aLength);
/**
* This method truncates this string to given length.
*
* @param anIndex -- new length of string
* @return nada
*/
void Truncate(PRInt32 anIndex=0);
/**
* Determine whether or not the characters in this
* string are in sorted order.
*
* @return TRUE if ordered.
*/
PRBool IsOrdered(void) const;
/**
* Determine whether or not the characters in this
* string are in store as 1 or 2 byte (unicode) strings.
*
* @return TRUE if ordered.
*/
PRBool IsUnicode(void) const {
PRBool result=PRBool(mCharSize==eTwoByte);
return result;
}
/**
* Determine whether or not this string has a length of 0
*
* @return TRUE if empty.
*/
PRBool IsEmpty(void) const {
return PRBool(0==mLength);
}
/**********************************************************************
Getters/Setters...
*********************************************************************/
/**
* Retrieve const ptr to internal buffer; DO NOT TRY TO FREE IT!
*/
const char* GetBuffer(void) const;
const PRUnichar* GetUnicode(void) const;
/**
* Get nth character.
*/
PRUnichar operator[](PRUint32 anIndex) const;
PRUnichar CharAt(PRUint32 anIndex) const;
PRUnichar First(void) const;
PRUnichar Last(void) const;
/**
* Set nth character.
*/
PRBool SetCharAt(PRUnichar aChar,PRUint32 anIndex);
/**********************************************************************
String concatenation methods...
*********************************************************************/
/**
* Create a new string by appending given string to this
* @param aString -- 2nd string to be appended
* @return new subsumable string
*/
nsSubsumeStr operator+(const nsStr& aString);
nsSubsumeStr operator+(const nsString& aString);
/**
* create a new string by adding this to the given cstring
* @param aCString is a ptr to cstring to be added to this
* @return newly created string
*/
nsSubsumeStr operator+(const char* aCString);
/**
* create a new string by adding this to the given prunichar*.
* @param aString is a ptr to UC-string to be added to this
* @return newly created string
*/
nsSubsumeStr operator+(const PRUnichar* aString);
/**
* create a new string by adding this to the given char.
* @param aChar is a char to be added to this
* @return newly created string
*/
nsSubsumeStr operator+(char aChar);
/**
* create a new string by adding this to the given char.
* @param aChar is a unichar to be added to this
* @return newly created string
*/
nsSubsumeStr operator+(PRUnichar aChar);
/**********************************************************************
Lexomorphic transforms...
*********************************************************************/
/**
* Converts chars in this to lowercase
* @update gess 7/27/98
*/
void ToLowerCase();
/**
* Converts chars in this to lowercase, and
* stores them in aOut
* @update gess 7/27/98
* @param aOut is a string to contain result
*/
void ToLowerCase(nsString& aString) const;
/**
* Converts chars in this to uppercase
* @update gess 7/27/98
*/
void ToUpperCase();
/**
* Converts chars in this to lowercase, and
* stores them in a given output string
* @update gess 7/27/98
* @param aOut is a string to contain result
*/
void ToUpperCase(nsString& aString) const;
/**
* This method is used to remove all occurances of the
* characters found in aSet from this string.
*
* @param aSet -- characters to be cut from this
* @return *this
*/
nsString& StripChars(const char* aSet);
nsString& StripChar(char aChar);
/**
* This method strips whitespace throughout the string
*
* @return this
*/
nsString& StripWhitespace();
/**
* swaps occurence of 1 string for another
*
* @return this
*/
nsString& ReplaceChar(PRUnichar anOldChar,PRUnichar aNewChar);
nsString& ReplaceChar(const char* aSet,PRUnichar aNewChar);
PRInt32 CountChar(PRUnichar aChar);
/**
* This method trims characters found in aTrimSet from
* either end of the underlying string.
*
* @param aTrimSet -- contains chars to be trimmed from
* both ends
* @return this
*/
nsString& Trim(const char* aSet,PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE);
/**
* This method strips whitespace from string.
* You can control whether whitespace is yanked from
* start and end of string as well.
*
* @param aEliminateLeading controls stripping of leading ws
* @param aEliminateTrailing controls stripping of trailing ws
* @return this
*/
nsString& CompressSet(const char* aSet, PRUnichar aChar,PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE);
/**
* This method strips whitespace from string.
* You can control whether whitespace is yanked from
* start and end of string as well.
*
* @param aEliminateLeading controls stripping of leading ws
* @param aEliminateTrailing controls stripping of trailing ws
* @return this
*/
nsString& CompressWhitespace( PRBool aEliminateLeading=PR_TRUE,PRBool aEliminateTrailing=PR_TRUE);
/**********************************************************************
string conversion methods...
*********************************************************************/
/**
* This method constructs a new nsString is a clone of this string.
*
*/
nsString* ToNewString() const;
/**
* Creates an ISOLatin1 clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @return ptr to new isolatin1 string
*/
char* ToNewCString() const;
/**
* Creates an UTF8 clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @return ptr to new isolatin1 string
*/
char* ToNewUTF8String() const;
/**
* Creates a unicode clone of this string
* Note that calls to this method should be matched with calls to Recycle().
* @return ptr to new unicode string
*/
PRUnichar* ToNewUnicode() const;
/**
* Copies data from internal buffer onto given char* buffer
* NOTE: This only copies as many chars as will fit in given buffer (clips)
* @param aBuf is the buffer where data is stored
* @param aBuflength is the max # of chars to move to buffer
* @return ptr to given buffer
*/
char* ToCString(char* aBuf,PRUint32 aBufLength,PRUint32 anOffset=0) const;
/**
* Perform string to float conversion.
* @param aErrorCode will contain error if one occurs
* @return float rep of string value
*/
float ToFloat(PRInt32* aErrorCode) const;
/**
* Try to derive the radix from the value contained in this string
* @return kRadix10, kRadix16 or kAutoDetect (meaning unknown)
*/
PRUint32 DetermineRadix(void);
/**
* Perform string to int conversion.
* @param aErrorCode will contain error if one occurs
* @return int rep of string value
*/
PRInt32 ToInteger(PRInt32* aErrorCode,PRUint32 aRadix=kRadix10) const;
/**********************************************************************
String manipulation methods...
*********************************************************************/
/**
* Functionally equivalent to assign or operator=
*
*/
nsString& SetString(const char* aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}
nsString& SetString(const PRUnichar* aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}
nsString& SetString(const nsString& aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}
/**
* assign given string to this string
* @param aStr: buffer to be assigned to this
* @param alength is the length of the given str (or -1)
if you want me to determine its length
* @return this
*/
nsString& Assign(const nsStr& aString,PRInt32 aCount=-1);
nsString& Assign(const char* aString,PRInt32 aCount=-1);
nsString& Assign(const PRUnichar* aString,PRInt32 aCount=-1);
nsString& Assign(char aChar);
nsString& Assign(PRUnichar aChar);
/**
* here come a bunch of assignment operators...
* @param aString: string to be added to this
* @return this
*/
nsString& operator=(const nsString& aString) {return Assign(aString);}
nsString& operator=(const nsStr& aString) {return Assign(aString);}
nsString& operator=(char aChar) {return Assign(aChar);}
nsString& operator=(PRUnichar aChar) {return Assign(aChar);}
nsString& operator=(const char* aCString) {return Assign(aCString);}
nsString& operator=(const PRUnichar* aString) {return Assign(aString);}
#ifdef AIX
nsString& operator=(const nsSubsumeStr& aSubsumeString); // AIX requires a const here
#else
nsString& operator=(nsSubsumeStr& aSubsumeString);
#endif
/**
* Here's a bunch of methods that append varying types...
* @param various...
* @return this
*/
nsString& operator+=(const nsStr& aString){return Append(aString,aString.mLength);}
nsString& operator+=(const nsString& aString){return Append(aString,aString.mLength);}
nsString& operator+=(const char* aCString) {return Append(aCString);}
//nsString& operator+=(char aChar){return Append(aChar);}
nsString& operator+=(const PRUnichar* aUCString) {return Append(aUCString);}
nsString& operator+=(PRUnichar aChar){return Append(aChar);}
/*
* Appends n characters from given string to this,
* This version computes the length of your given string
*
* @param aString is the source to be appended to this
* @return number of chars copied
*/
nsString& Append(const nsStr& aString) {return Append(aString,aString.mLength);}
nsString& Append(const nsString& aString) {return Append(aString,aString.mLength);}
/*
* Appends n characters from given string to this,
*
* @param aString is the source to be appended to this
* @param aCount -- number of chars to copy; -1 tells us to compute the strlen for you
* @return number of chars copied
*/
nsString& Append(const nsStr& aString,PRInt32 aCount);
nsString& Append(const nsString& aString,PRInt32 aCount);
nsString& Append(const char* aString,PRInt32 aCount=-1);
nsString& Append(const PRUnichar* aString,PRInt32 aCount=-1);
nsString& Append(char aChar);
nsString& Append(PRUnichar aChar);
nsString& Append(PRInt32 aInteger,PRInt32 aRadix=10); //radix=8,10 or 16
nsString& Append(float aFloat);
/*
* Copies n characters from this string to given string,
* starting at the leftmost offset.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @return number of chars copied
*/
PRUint32 Left(nsString& aCopy,PRInt32 aCount) const;
/*
* Copies n characters from this string to given string,
* starting at the given offset.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @param anOffset -- position where copying begins
* @return number of chars copied
*/
PRUint32 Mid(nsString& aCopy,PRUint32 anOffset,PRInt32 aCount) const;
/*
* Copies n characters from this string to given string,
* starting at rightmost char.
*
*
* @param aCopy -- Receiving string
* @param aCount -- number of chars to copy
* @return number of chars copied
*/
PRUint32 Right(nsString& aCopy,PRInt32 aCount) const;
/*
* This method inserts n chars from given string into this
* string at str[anOffset].
*
* @param aCopy -- String to be inserted into this
* @param anOffset -- insertion position within this str
* @param aCount -- number of chars to be copied from aCopy
* @return number of chars inserted into this.
*/
nsString& Insert(const nsString& aCopy,PRUint32 anOffset,PRInt32 aCount=-1);
/**
* Insert a given string into this string at
* a specified offset.
*
* @param aString* to be inserted into this string
* @param anOffset is insert pos in str
* @return the number of chars inserted into this string
*/
nsString& Insert(const char* aChar,PRUint32 anOffset,PRInt32 aCount=-1);
nsString& Insert(const PRUnichar* aChar,PRUint32 anOffset,PRInt32 aCount=-1);
/**
* Insert a single char into this string at
* a specified offset.
*
* @param character to be inserted into this string
* @param anOffset is insert pos in str
* @return the number of chars inserted into this string
*/
//nsString& Insert(char aChar,PRUint32 anOffset);
nsString& Insert(PRUnichar aChar,PRUint32 anOffset);
/*
* This method is used to cut characters in this string
* starting at anOffset, continuing for aCount chars.
*
* @param anOffset -- start pos for cut operation
* @param aCount -- number of chars to be cut
* @return *this
*/
nsString& Cut(PRUint32 anOffset,PRInt32 aCount);
/**********************************************************************
Searching methods...
*********************************************************************/
/**
* Search for given character within this string.
* This method does so by using a binary search,
* so your string HAD BETTER BE ORDERED!
*
* @param aChar is the unicode char to be found
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 BinarySearch(PRUnichar aChar) const;
/**
* Search for given substring within this string
*
* @param aString is substring to be sought in this
* @param aIgnoreCase selects case sensitivity
* @param anOffset tells us where in this strig to start searching
* @return offset in string, or -1 (kNotFound)
*/
PRInt32 Find(const nsString& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 Find(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 Find(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 Find(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* Search for given char within this string
*
* @param aString is substring to be sought in this
* @param anOffset tells us where in this strig to start searching
* @param aIgnoreCase selects case sensitivity
* @return find pos in string, or -1 (kNotFound)
*/
//PRInt32 Find(PRUnichar aChar,PRInt32 offset=-1,PRBool aIgnoreCase=PR_FALSE) const;
PRInt32 FindChar(PRUnichar aChar,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* This method searches this string for the first character
* found in the given charset
* @param aString contains set of chars to be found
* @param anOffset tells us where to start searching in this
* @return -1 if not found, else the offset in this
*/
PRInt32 FindCharInSet(const char* aString,PRInt32 anOffset=-1) const;
PRInt32 FindCharInSet(const PRUnichar* aString,PRInt32 anOffset=-1) const;
PRInt32 FindCharInSet(const nsStr& aString,PRInt32 anOffset=-1) const;
/**
* This methods scans the string backwards, looking for the given string
* @param aString is substring to be sought in this
* @param aIgnoreCase tells us whether or not to do caseless compare
* @param anOffset tells us where in this strig to start searching (counting from left)
*/
PRInt32 RFind(const char* aCString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 RFind(const nsString& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 RFind(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
PRInt32 RFind(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* Search for given char within this string
*
* @param aString is substring to be sought in this
* @param anOffset tells us where in this strig to start searching (counting from left)
* @param aIgnoreCase selects case sensitivity
* @return find pos in string, or -1 (kNotFound)
*/
//PRInt32 RFind(PRUnichar aChar,PRInt32 offset=-1,PRBool aIgnoreCase=PR_FALSE) const;
PRInt32 RFindChar(PRUnichar aChar,PRBool aIgnoreCase=PR_FALSE,PRInt32 anOffset=-1) const;
/**
* This method searches this string for the last character
* found in the given string
* @param aString contains set of chars to be found
* @param anOffset tells us where in this strig to start searching (counting from left)
* @return -1 if not found, else the offset in this
*/
PRInt32 RFindCharInSet(const char* aString,PRInt32 anOffset=-1) const;
PRInt32 RFindCharInSet(const PRUnichar* aString,PRInt32 anOffset=-1) const;
PRInt32 RFindCharInSet(const nsStr& aString,PRInt32 anOffset=-1) const;
/**********************************************************************
Comparison methods...
*********************************************************************/
/**
* Compares a given string type to this string.
* @update gess 7/27/98
* @param S is the string to be compared
* @param aIgnoreCase tells us how to treat case
* @param aCount tells us how many chars to compare
* @return -1,0,1
*/
virtual PRInt32 Compare(const nsString& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
virtual PRInt32 Compare(const nsStr &aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
virtual PRInt32 Compare(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
virtual PRInt32 Compare(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
/**
* These methods compare a given string type to this one
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator==(const nsString &aString) const;
PRBool operator==(const nsStr &aString) const;
PRBool operator==(const char *aString) const;
PRBool operator==(const PRUnichar* aString) const;
/**
* These methods perform a !compare of a given string type to this
* @param aString is the string to be compared to this
* @return TRUE
*/
PRBool operator!=(const nsString &aString) const;
PRBool operator!=(const nsStr &aString) const;
PRBool operator!=(const char* aString) const;
PRBool operator!=(const PRUnichar* aString) const;
/**
* These methods test if a given string is < than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator<(const nsString &aString) const;
PRBool operator<(const nsStr &aString) const;
PRBool operator<(const char* aString) const;
PRBool operator<(const PRUnichar* aString) const;
/**
* These methods test if a given string is > than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator>(const nsString &aString) const;
PRBool operator>(const nsStr &S) const;
PRBool operator>(const char* aString) const;
PRBool operator>(const PRUnichar* aString) const;
/**
* These methods test if a given string is <= than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator<=(const nsString &aString) const;
PRBool operator<=(const nsStr &S) const;
PRBool operator<=(const char* aString) const;
PRBool operator<=(const PRUnichar* aString) const;
/**
* These methods test if a given string is >= than this
* @param aString is the string to be compared to this
* @return TRUE or FALSE
*/
PRBool operator>=(const nsString &aString) const;
PRBool operator>=(const nsStr &S) const;
PRBool operator>=(const char* aString) const;
PRBool operator>=(const PRUnichar* aString) const;
/**
* Compare this to given string; note that we compare full strings here.
* The optional length argument just lets us know how long the given string is.
* If you provide a length, it is compared to length of this string as an
* optimization.
*
* @param aString -- the string to compare to this
* @param aCount -- number of chars to be compared.
* @return TRUE if equal
*/
PRBool Equals(const nsString &aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const nsStr& aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const char* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(const PRUnichar* aString,PRBool aIgnoreCase=PR_FALSE,PRInt32 aCount=-1) const;
PRBool Equals(/*FIX: const */nsIAtom* anAtom,PRBool aIgnoreCase) const;
PRBool Equals(const PRUnichar* s1, const PRUnichar* s2,PRBool aIgnoreCase=PR_FALSE) const;
PRBool EqualsIgnoreCase(const nsString& aString) const;
PRBool EqualsIgnoreCase(const char* aString,PRInt32 aCount=-1) const;
PRBool EqualsIgnoreCase(/*FIX: const */nsIAtom *aAtom) const;
PRBool EqualsIgnoreCase(const PRUnichar* s1, const PRUnichar* s2) const;
/**
* Determine if given buffer is plain ascii
*
* @param aBuffer -- if null, then we test *this, otherwise we test given buffer
* @return TRUE if is all ascii chars or if strlen==0
*/
PRBool IsASCII(const PRUnichar* aBuffer=0);
/**
* Determine if given char is a valid space character
*
* @param aChar is character to be tested
* @return TRUE if is valid space char
*/
static PRBool IsSpace(PRUnichar ch);
/**
* Determine if given char in valid alpha range
*
* @param aChar is character to be tested
* @return TRUE if in alpha range
*/
static PRBool IsAlpha(PRUnichar ch);
/**
* Determine if given char is valid digit
*
* @param aChar is character to be tested
* @return TRUE if char is a valid digit
*/
static PRBool IsDigit(PRUnichar ch);
static void Recycle(nsString* aString);
static nsString* CreateString(void);
};
extern NS_COM int fputs(const nsString& aString, FILE* out);
//ostream& operator<<(ostream& aStream,const nsString& aString);
//virtual void DebugDump(ostream& aStream) const;
/**************************************************************
Here comes the AutoString class which uses internal memory
(typically found on the stack) for its default buffer.
If the buffer needs to grow, it gets reallocated on the heap.
**************************************************************/
class NS_COM nsAutoString : public nsString {
public:
nsAutoString();
nsAutoString(const char* aCString,PRInt32 aLength=-1);
nsAutoString(const PRUnichar* aString,PRInt32 aLength=-1);
nsAutoString(const CBufDescriptor& aBuffer);
nsAutoString(const nsStr& aString);
nsAutoString(const nsAutoString& aString);
#ifdef AIX
nsAutoString(const nsSubsumeStr& aSubsumeStr); // AIX requires a const
#else
nsAutoString(nsSubsumeStr& aSubsumeStr);
#endif // AIX
nsAutoString(PRUnichar aChar);
virtual ~nsAutoString();
nsAutoString& operator=(const nsStr& aString) {nsString::Assign(aString); return *this;}
nsAutoString& operator=(const nsAutoString& aString) {nsString::Assign(aString); return *this;}
nsAutoString& operator=(const char* aCString) {nsString::Assign(aCString); return *this;}
nsAutoString& operator=(char aChar) {nsString::Assign(aChar); return *this;}
nsAutoString& operator=(const PRUnichar* aBuffer) {nsString::Assign(aBuffer); return *this;}
nsAutoString& operator=(PRUnichar aChar) {nsString::Assign(aChar); return *this;}
/**
* Retrieve the size of this string
* @return string length
*/
virtual void SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
char mBuffer[kDefaultStringSize<<eTwoByte];
};
/***************************************************************
The subsumestr class is very unusual.
It differs from a normal string in that it doesn't use normal
copy semantics when another string is assign to this.
Instead, it "steals" the contents of the source string.
This is very handy for returning nsString classes as part of
an operator+(...) for example, in that it cuts down the number
of copy operations that must occur.
You should probably not use this class unless you really know
what you're doing.
***************************************************************/
class NS_COM nsSubsumeStr : public nsString {
public:
nsSubsumeStr(nsStr& aString);
nsSubsumeStr(PRUnichar* aString,PRBool assumeOwnership,PRInt32 aLength=-1);
nsSubsumeStr(char* aString,PRBool assumeOwnership,PRInt32 aLength=-1);
};
#endif

View File

@@ -1,551 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsStringTokenizer.h"
nsStringTokenizer::nsStringTokenizer(const char* aFieldSep,const char* aRecordSep) :
mDataStartDelimiter(""),
mDataEndDelimiter(""),
mSubstrStartDelimiter(""),
mSubstrEndDelimiter(""),
mFieldSeparator(aFieldSep),
mRecordSeparator(aRecordSep)
{
mBuffer=0;
mOffset=0;
mValidChars[0]=mValidChars[1]=mValidChars[2]=mValidChars[3]=0;
mInvalidChars[0]=mInvalidChars[1]=mInvalidChars[2]=mInvalidChars[3]=0;
mCharSpec=eGivenChars;
}
nsStringTokenizer::~nsStringTokenizer(){
}
/**
* This method can tell you whether a given char is in the valid set
* given by the user in the constructor
* @update gess7/10/99
*/
void nsStringTokenizer::SetBuffer(nsString& aBuffer) {
mBuffer=&aBuffer;
}
/**
* Call this to add a token specifier to this tokenizer.
* Ultimately -- this method will be callable any number of times
* so that you can have multiple token types.
*
* @update gess7/10/99
*/
void nsStringTokenizer::AddTokenSpec(const char* aTokenSpec) {
if(aTokenSpec) {
ExpandDataSpecifier(aTokenSpec);
}
}
/**
* This method can tell you whether a given char is in the valid set
* given by the user in the constructor
* @update gess7/10/99
*/
inline PRBool nsStringTokenizer::IsValidDataChar(PRUnichar aChar) {
PRBool result=PR_FALSE;
switch(mCharSpec) {
case eGivenChars:
{
PRInt32 theByteNum=aChar/32;
PRInt32 theBitNum=aChar-(theByteNum*32);
PRInt32 shift=(1<<theBitNum);
PRInt32 value=PRInt32(mValidChars[theByteNum]&shift);
result=PRBool(value>0);
}
break;
case eAllChars:
result=PR_TRUE;
break;
case eExceptChars:
break;
}
return result;
}
inline void SetChars(PRInt32 array[3],PRUnichar aStart,PRUnichar aStop){
PRInt32 theChar;
for(theChar=aStart;theChar<=aStop;theChar++){
PRInt32 theByteNum=theChar/32;
PRInt32 theBitNum=theChar-(theByteNum*32);
PRInt32 shift=(1<<theBitNum);
array[theByteNum]|=shift;
}
}
inline void ClearChars(PRInt32 array[3],PRUnichar aStart,PRUnichar aStop){
PRInt32 theChar;
for(theChar=aStart;theChar<=aStop;theChar++){
PRInt32 theByteNum=theChar/32;
PRInt32 theBitNum=theChar-(theByteNum*32);
PRInt32 shift=(1<<theBitNum);
array[theByteNum]&=(~shift);
}
}
/**
* This method constructs the legal charset and data delimiter pairs.
* Specifier rules are:
* abc -- allows a set of characters
* [a-z] -- allows all chars in given range
* [*-*] -- allows all characters
* ^abc -- disallows a set of characters
* [a^z] -- disallows all characters in given range
* [a*b] -- specifies a delimiter pair for the entire token
* [a+b] -- specifies a delimiter pair for substrings in the token
* @update gess7/10/99
*/
void nsStringTokenizer::ExpandDataSpecifier(const char* aDataSpec) {
if(aDataSpec) {
PRInt32 theIndex=-1;
char theChar=0;
while(theChar=aDataSpec[++theIndex]) {
switch(theChar) {
case '[':
switch(aDataSpec[theIndex+2]){
case '-':
{
char theStart=aDataSpec[theIndex+1];
char theEnd=aDataSpec[theIndex+3];
if(('*'==theStart) && (theStart==theEnd)) {
mCharSpec=eAllChars;
}
else {
SetChars(mValidChars,theStart,theEnd);
}
}
break;
case '^': //specify a range of invalid chars
{
char theStart=aDataSpec[theIndex+1];
char theEnd=aDataSpec[theIndex+3];
SetChars(mInvalidChars,theStart,theEnd);
}
break;
case '*': //this char signals a delimiter pair
mDataStartDelimiter+=aDataSpec[theIndex+1];
mDataEndDelimiter+=aDataSpec[theIndex+3];
break;
case '+': //this char signals a delimiter pair for substrings
mSubstrStartDelimiter+=aDataSpec[theIndex+1];
mSubstrEndDelimiter+=aDataSpec[theIndex+3];
break;
default:
break;
}
theIndex+=4;
break;
case '^'://they've given us a list (not a range) of invalid chars
{
while(theChar=aDataSpec[++theIndex]) {
if('['!=theChar) {
SetChars(mInvalidChars,theChar,theChar);
}
else {
--theIndex;
break;
}
}
}
break;
default:
SetChars(mValidChars,theChar,theChar);
break;
}//switch
}
}
/* DEBUG CODE TO SHOW STRING OF GIVEN CHARSET
CAutoString temp;
for(PRInt32 theChar=0;theChar<128;theChar++){
if(IsValidDataChar(theChar))
temp+=theChar;
}
PRInt32 x=10;
*/
}
nsStringTokenizer::eCharTypes nsStringTokenizer::DetermineCharType(PRUnichar ch) {
eCharTypes result=eUnknown;
if(mRecordSeparator[0]==ch)
result=eRecordSeparator;
else if(mFieldSeparator[0]==ch)
result=eFieldSeparator;
else if((mDataStartDelimiter[0]==ch) || (mDataEndDelimiter[0]==ch))
result=eDataDelimiter;
else if(IsValidDataChar(ch))
result=eDataChar;
return result;
}
/**
* Moves the input stream to the start of the file.
* @update gess7/25/98
* @return yes if all is well
*/
PRBool nsStringTokenizer::FirstRecord(void){
mOffset=0;
return PRBool(mBuffer!=0);
}
/**
* Seeks to next record
* @update gess7/25/98
* @return PR_TRUE if there IS a next record
*/
PRBool nsStringTokenizer::NextRecord(void){
PRBool result=PR_FALSE;
if(mBuffer) {
PRInt32 status=SkipOver(mRecordSeparator);
if(NS_OK==status) {
if(SkipToValidData()) {
if(NS_OK==status) {
result=HasNextToken();
}
}
else result=PR_FALSE;
}
}
return result;
}
/*
* LAST MODS: gess 12Aug94
* PARMS: «»
* RETURNS: YES if there is another field to be read.
* PURPOSE: Allows a client to ask the io system to test for
the presence of another field.
*/
PRBool nsStringTokenizer::HasNextToken(void){
PRBool result=PR_FALSE;
if(mBuffer){
while(More()) {
//Now go test to see if there is any other field data in this record.
//The appropriate algorithm here is to scan the file until you
//find one of following things occurs:
// 1. You find a field separator
// 2. You find a record separator
// 3. You hit the end of the file
// 4. You find a valid char.
PRUnichar theChar;
GetChar(theChar);
switch(DetermineCharType(theChar)){
case eUnknown: //ok to skip junk between delimiters...
if(-1<mSubstrStartDelimiter.Find(theChar)) {
break;
}
case eDataChar:
if(kSpace<theChar) {
UnGetChar(theChar);
return PR_TRUE;
}
break;
case eDataDelimiter:
UnGetChar(theChar);
return PR_TRUE;
case eFieldSeparator:
SkipOver(mFieldSeparator[0]);
return PR_TRUE;
case eRecordSeparator:
UnGetChar(theChar);
return PR_FALSE;
default:
return PR_FALSE;
}
}
}//if
return result;
}
/**
* LAST MODS: gess 4Jul94
* PARMS:
* RETURNS: error code; 0 means all is well.
* PURPOSE: Gets the next field of data from the stream.
* NOTES: This does not currently handle fields that have
field delimiters (ie quotes).
* WARNING: You should have called HasNextToken prior
to calling this method, so that you can
fail gracefully if you encounter the end
of your input stream (unexpectedly). If
this method hits EOF, it returns an error.
*/
PRInt32 nsStringTokenizer::GetNextToken(nsString& aToken){
PRInt32 result=0;
if(mBuffer && More()) {
PRUnichar theChar;
if(mDataStartDelimiter.Length()) {
result=GetChar(theChar); //skip delimiter...
if(mFieldSeparator[0]==theChar)
return result;
aToken+=theChar;
}
if(NS_OK==result) {
PRUnichar theTerm[]={mFieldSeparator[0],mRecordSeparator[0],0,0};
if(mDataEndDelimiter.Length()) {
theTerm[2]=mDataEndDelimiter[0];
}
nsAutoString terms(mRecordSeparator);
terms+=mFieldSeparator;
result=ReadUntil(aToken,terms,PRBool(0!=mDataEndDelimiter[0]));
if(NS_OK==result) {
PRInt32 status=SkipOver(mFieldSeparator[0]);
}
}
}
return result;
}
/*
* This method gets called when the system wants to jump over any garbage before that may be in a
* string. Typically, this happens before, inbetween and after valid data rows.
*
* LAST MODS: gess 11Aug94
* RETURNS: 0 if all is well; non-zero for error. If you hit EOF, return 0.
*/
PRBool nsStringTokenizer::SkipToValidData(void){
PRInt32 result=0;
PRUnichar ch;
if(mBuffer) {
while(More()) {
result=GetChar(ch);
switch(DetermineCharType(ch)){
case eDataChar:
if(!mDataStartDelimiter[0]) {
UnGetChar(ch);
return PR_TRUE;
}
break;
case eDataDelimiter:
if(ch==mDataStartDelimiter[0]) {
UnGetChar(ch);
return PR_TRUE;
}
break;
case eFieldSeparator:
case eRecordSeparator:
UnGetChar(ch);
return PR_TRUE;
default:
break;
} //switch
} //while
}//if
return PR_FALSE;
}
PRInt32 nsStringTokenizer::SkipOver(PRUnichar aSkipChar) {
PRUnichar theChar=0;
PRInt32 result=NS_OK;
if(mBuffer) {
while(NS_OK==result) {
result=GetChar(theChar);
if(NS_OK == result) {
if(theChar!=aSkipChar) {
UnGetChar(theChar);
break;
}
}
else break;
} //while
}//if
return result;
}
PRInt32 nsStringTokenizer::SkipOver(nsString& aString) {
PRUnichar theChar=0;
PRInt32 result=NS_OK;
if(mBuffer) {
while(NS_OK==result) {
result=GetChar(theChar);
if(NS_OK == result) {
PRInt32 index=aString.Find(theChar);
if(-1==index) {
UnGetChar(theChar);
break;
}
}
else break;
} //while
} //if
return result;
}
PRInt32 nsStringTokenizer::ReadUntil(nsString& aString,nsString& aTermSet,PRBool addTerminal){
PRInt32 result=NS_OK;
PRUnichar theChar=0;
PRBool theCharIsValid;
if(mBuffer) {
while(NS_OK == result) {
result=GetChar(theChar);
if(NS_OK==result) {
PRBool found=PR_FALSE;
PRInt32 index=aTermSet.Find(theChar);
if(kNotFound<index)
found=PR_TRUE;
if(found) {
if(addTerminal)
aString+=theChar;
else UnGetChar(theChar);
break;
}
else {
PRInt32 pos=mSubstrStartDelimiter.Find(theChar);
if(-1<pos) {
aString+=theChar;
result=ReadUntil(aString,mSubstrEndDelimiter[pos],PR_TRUE);
}
else if(theCharIsValid){
if(IsValidDataChar(theChar)){
aString+=theChar;
}
else theCharIsValid=PR_FALSE;
}
} //else
} //if
} //while
}//if
return result;
}
PRInt32 nsStringTokenizer::ReadUntil(nsString& aString,PRUnichar aTerminalChar,PRBool addTerminal){
PRInt32 result=NS_OK;
PRUnichar theChar=0;
if(mBuffer) {
while(NS_OK == result) {
result=GetChar(theChar);
if(NS_OK==result) {
if(theChar==aTerminalChar){
if(addTerminal)
aString+=theChar;
else UnGetChar(theChar);
break;
}
else aString+=theChar;
}//if
} //while
}//if
return result;
}
PRBool nsStringTokenizer::More(void){
PRBool result=PR_FALSE;
if(mBuffer) {
if(mOffset<mBuffer->Length())
result=PR_TRUE;
}
return result;
}
PRInt32 nsStringTokenizer::GetChar(PRUnichar& aChar){
PRInt32 result=kEOF;
if(mBuffer) {
if(mOffset<mBuffer->Length()) {
aChar=(*mBuffer)[mOffset++];
result=0;
}
}
return result;
}
void nsStringTokenizer::UnGetChar(PRUnichar aChar){
if(mOffset>0)
mOffset--;
}
/*
* Call this method if you want the tokenizer to iterate your string
* and automatically call you back with each token
*
* @parm aFunctor is the object you want me to notify
* @update gess 07/10/99
* RETURNS: 0 if all went well
*/
PRInt32 nsStringTokenizer::Iterate(nsString& aBuffer,ITokenizeFunctor& aFunctor) {
PRInt32 result=0;
PRInt32 theRecordNum=-1;
nsString* theOldBuffer=mBuffer;
mBuffer=&aBuffer;
FirstRecord();
while(HasNextToken()){
theRecordNum++;
PRInt32 theTokenNum=-1;
while(HasNextToken()){
theTokenNum++;
nsAutoString theString;
GetNextToken(theString);
aFunctor(theString,theRecordNum,theTokenNum);
}
NextRecord();
}
mBuffer=theOldBuffer;
return result;
}

View File

@@ -1,146 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/**
* MODULE NOTES:
* @update gess 4/1/98
*
* This class knows how to read delimited data from a string.
* Here are the 2 things you need to know to use this class effectively:
*
* ================================================
* How To Setup The Tokenizer
* ================================================
*
* The input charset can be either constrained or uncontrained. Constrained means
* that you've chosen to allow only certain chars into your tokens. Unconstrained
* means that any char (other than delimiters) are legal in your tokens.
* If you want unconstrained input, use [*-*] your dataspec. To contrain your token
* charset, you set ranges or single chars in the dataspec like this:
* "abc[0-9]" -- which allow numbers and the letters a,b,c
*
* Dataspecifier rules:
* abc -- allows a set of characters
* [a-z] -- allows all chars in given range
* [*-*] -- allows all characters
* ^abc -- disallows a set of characters //NOT_YET_IMPLEMENTED
* [a^z] -- disallows all characters in given range //NOT_YET_IMPLEMENTED
* [a*b] -- specifies a delimiter pair for the entire token
* [a+b] -- specifies a delimiter pair for substrings in the token
*
* One other note: there is an optional argument called allowQuoting, which tells
* the tokenizer whether to allow quoted strings within your fields. If you set this
* to TRUE, then we allow nested quoted strings, which themselves can contain any data.
* It's considered an error to set allowQuoting=TRUE and use a quote as a token or record delimiter.
*
* The other thing you need to set up for the tokenizer to work correctly are the delimiters.
* They seperate fields and records, and be different. You can also have more than one kind
* of delimiter for each. The distinguishment between tokens are records allows the caller
* to deal with multi-line text files (where \n is the record seperator). Again, you don't have
* to have a record seperator if it doesn't make sense in the context of your input dataset.
*
*
* ================================================
* How To Iterate Tokens
* ================================================
*
* There are 2 ways to iterate tokens, either manually or automatically.
* The manual method requires that you call a set of methods in the right order,
* but gives you slightly more control. Here's the calling pattern:
*
* {
* nsString theBuffer("xxxxxxx");
* nsStringTokenizer tok(...);
* tok.SetBuffer(theBuffer);
* tok.FirstRecord();
* while(tok.HasNextToken()){
* while(tok.HasNextToken()){
* nsAutoString theToken;
* tok.GetNextToken(theToken);
* //do something with your token here...
* } //while
* tok.NextRecord();
* } //while
* }
*
* The automatic method handles all the iteration for you. You provide a callback functor
* and you'll get called once for each token per record. To use that technique, you need
* to define an object that provides the ITokenizeFunctor interface (1 method). Then
* call the tokenizer method Iterate(...). Voila.
*
*/
#ifndef nsStringTokenizer_
#define nsStringTokenizer_
#include "nsString.h"
class ITokenizeFunctor {
public:
virtual operator ()(nsString& aToken,PRInt32 aRecordCount,PRInt32 aTokenCount)=0;
};
class nsStringTokenizer {
public:
nsStringTokenizer(const char* aFieldSep=",",const char* aRecordSep="\n");
~nsStringTokenizer();
//Call these methods if you want to iterate the tokens yourself
void SetBuffer(nsString& aBuffer);
void AddTokenSpec(const char* aTokenSpec="");
PRBool FirstRecord(void);
PRBool NextRecord(void);
PRBool HasNextToken(void);
PRInt32 GetNextToken(nsString& aToken);
//Call this one (exclusively) if you want to be called back iteratively
PRInt32 Iterate(nsString& aBuffer,ITokenizeFunctor& aFunctor);
protected:
enum eCharTypes {eUnknown,eDataChar,eFieldSeparator,eDataDelimiter,eRecordSeparator};
enum eCharSpec {eGivenChars,eAllChars,eExceptChars};
PRInt32 SkipOver(nsString& aSkipSet);
PRInt32 SkipOver(PRUnichar aSkipChar);
PRInt32 ReadUntil(nsString& aString,nsString& aTermSet,PRBool aState);
PRInt32 ReadUntil(nsString& aString,PRUnichar aChar,PRBool aState);
PRBool More(void);
PRInt32 GetChar(PRUnichar& aChar);
void UnGetChar(PRUnichar aChar);
PRBool SkipToValidData(void);
void ExpandDataSpecifier(const char* aDataSpec) ;
inline PRBool IsValidDataChar(PRUnichar aChar);
eCharTypes DetermineCharType(PRUnichar aChar);
PRInt32 mValidChars[4];
PRInt32 mInvalidChars[4];
nsString mDataStartDelimiter;
nsString mDataEndDelimiter;
nsString mSubstrStartDelimiter;
nsString mSubstrEndDelimiter;
nsString mFieldSeparator;
nsString mRecordSeparator;
PRInt32 mOffset;
eCharSpec mCharSpec;
nsString* mBuffer;
};
#endif

View File

@@ -1,388 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsSupportsArray.h"
#include "nsSupportsArrayEnumerator.h"
#include <string.h>
static const PRUint32 kGrowArrayBy = 8;
nsSupportsArray::nsSupportsArray()
{
NS_INIT_REFCNT();
mArray = &(mAutoArray[0]);
mArraySize = kAutoArraySize;
mCount = 0;
}
nsSupportsArray::~nsSupportsArray()
{
DeleteArray();
}
NS_METHOD
nsSupportsArray::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
{
if (aOuter)
return NS_ERROR_NO_AGGREGATION;
nsSupportsArray *it = new nsSupportsArray();
if (it == NULL)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(it);
nsresult rv = it->QueryInterface(aIID, aResult);
NS_RELEASE(it);
return rv;
}
NS_IMPL_ISUPPORTS1(nsSupportsArray, nsISupportsArray)
void nsSupportsArray::DeleteArray(void)
{
Clear();
if (mArray != &(mAutoArray[0])) {
delete[] mArray;
mArray = &(mAutoArray[0]);
mArraySize = kAutoArraySize;
}
}
#if 0
NS_IMETHODIMP_(nsISupportsArray&)
nsISupportsArray::operator=(const nsISupportsArray& other)
{
NS_ASSERTION(0, "should be an abstract method");
return *this; // bogus
}
#endif
NS_IMETHODIMP_(nsISupportsArray&)
nsSupportsArray::operator=(nsISupportsArray const& aOther)
{
PRUint32 otherCount = 0;
nsresult rv = ((nsISupportsArray&)aOther).Count(&otherCount);
NS_ASSERTION(NS_SUCCEEDED(rv), "this method should return an error!");
if (NS_FAILED(rv)) return *this;
if (otherCount > mArraySize) {
DeleteArray();
mArraySize = otherCount;
mArray = new nsISupports*[mArraySize];
}
else {
Clear();
}
mCount = otherCount;
while (0 < otherCount--) {
mArray[otherCount] = ((nsISupportsArray&)aOther).ElementAt(otherCount);
}
return *this;
}
NS_IMETHODIMP_(PRBool)
nsSupportsArray::Equals(const nsISupportsArray* aOther)
{
if (0 != aOther) {
const nsSupportsArray* other = (const nsSupportsArray*)aOther;
if (mCount == other->mCount) {
PRUint32 aIndex = mCount;
while (0 < aIndex--) {
if (mArray[aIndex] != other->mArray[aIndex]) {
return PR_FALSE;
}
}
return PR_TRUE;
}
}
return PR_FALSE;
}
NS_IMETHODIMP_(nsISupports*)
nsSupportsArray::ElementAt(PRUint32 aIndex)
{
if (aIndex < mCount) {
nsISupports* element = mArray[aIndex];
NS_ADDREF(element);
return element;
}
return 0;
}
NS_IMETHODIMP_(PRInt32)
nsSupportsArray::IndexOf(const nsISupports* aPossibleElement)
{
return IndexOfStartingAt(aPossibleElement, 0);
}
NS_IMETHODIMP_(PRInt32)
nsSupportsArray::IndexOfStartingAt(const nsISupports* aPossibleElement,
PRUint32 aStartIndex)
{
if (aStartIndex < mCount) {
const nsISupports** start = (const nsISupports**)mArray; // work around goofy compiler behavior
const nsISupports** ep = (start + aStartIndex);
const nsISupports** end = (start + mCount);
while (ep < end) {
if (aPossibleElement == *ep) {
return (ep - start);
}
ep++;
}
}
return -1;
}
NS_IMETHODIMP_(PRInt32)
nsSupportsArray::LastIndexOf(const nsISupports* aPossibleElement)
{
if (0 < mCount) {
const nsISupports** start = (const nsISupports**)mArray; // work around goofy compiler behavior
const nsISupports** ep = (start + mCount);
while (start <= --ep) {
if (aPossibleElement == *ep) {
return (ep - start);
}
}
}
return -1;
}
NS_IMETHODIMP_(PRBool)
nsSupportsArray::InsertElementAt(nsISupports* aElement, PRUint32 aIndex)
{
if (!aElement) {
return PR_FALSE;
}
if (aIndex <= mCount) {
if (mArraySize < (mCount + 1)) { // need to grow the array
mArraySize += kGrowArrayBy;
nsISupports** oldArray = mArray;
mArray = new nsISupports*[mArraySize];
if (0 == mArray) { // ran out of memory
mArray = oldArray;
mArraySize -= kGrowArrayBy;
return PR_FALSE;
}
if (0 != oldArray) { // need to move old data
if (0 < aIndex) {
::memcpy(mArray, oldArray, aIndex * sizeof(nsISupports*));
}
PRUint32 slide = (mCount - aIndex);
if (0 < slide) {
::memcpy(mArray + aIndex + 1, oldArray + aIndex, slide * sizeof(nsISupports*));
}
if (oldArray != &(mAutoArray[0])) {
delete[] oldArray;
}
}
}
else {
PRUint32 slide = (mCount - aIndex);
if (0 < slide) {
::memmove(mArray + aIndex + 1, mArray + aIndex, slide * sizeof(nsISupports*));
}
}
mArray[aIndex] = aElement;
NS_ADDREF(aElement);
mCount++;
return PR_TRUE;
}
return PR_FALSE;
}
NS_IMETHODIMP_(PRBool)
nsSupportsArray::ReplaceElementAt(nsISupports* aElement, PRUint32 aIndex)
{
if (aIndex < mCount) {
NS_ADDREF(aElement); // addref first in case it's the same object!
NS_RELEASE(mArray[aIndex]);
mArray[aIndex] = aElement;
return PR_TRUE;
}
return PR_FALSE;
}
NS_IMETHODIMP_(PRBool)
nsSupportsArray::RemoveElementAt(PRUint32 aIndex)
{
if (aIndex < mCount) {
NS_RELEASE(mArray[aIndex]);
mCount--;
PRInt32 slide = (mCount - aIndex);
if (0 < slide) {
::memmove(mArray + aIndex, mArray + aIndex + 1,
slide * sizeof(nsISupports*));
}
return PR_TRUE;
}
return PR_FALSE;
}
NS_IMETHODIMP_(PRBool)
nsSupportsArray::RemoveElement(const nsISupports* aElement, PRUint32 aStartIndex)
{
if (aStartIndex < mCount) {
nsISupports** ep = mArray;
nsISupports** end = ep + mCount;
while (ep < end) {
if (*ep == aElement) {
return RemoveElementAt(PRUint32(ep - mArray));
}
ep++;
}
}
return PR_FALSE;
}
NS_IMETHODIMP_(PRBool)
nsSupportsArray::RemoveLastElement(const nsISupports* aElement)
{
if (0 < mCount) {
nsISupports** ep = (mArray + mCount);
while (mArray <= --ep) {
if (*ep == aElement) {
return RemoveElementAt(PRUint32(ep - mArray));
}
}
}
return PR_FALSE;
}
NS_IMETHODIMP_(PRBool)
nsSupportsArray::AppendElements(nsISupportsArray* aElements)
{
nsSupportsArray* elements = (nsSupportsArray*)aElements;
if (elements && (0 < elements->mCount)) {
if (mArraySize < (mCount + elements->mCount)) { // need to grow the array
PRUint32 count = mCount + elements->mCount;
PRUint32 oldSize = mArraySize;
while (mArraySize < count) { // ick
mArraySize += kGrowArrayBy;
}
nsISupports** oldArray = mArray;
mArray = new nsISupports*[mArraySize];
if (0 == mArray) { // ran out of memory
mArray = oldArray;
mArraySize = oldSize;
return PR_FALSE;
}
if (0 != oldArray) { // need to move old data
if (0 < mCount) {
::memcpy(mArray, oldArray, mCount * sizeof(nsISupports*));
}
if (oldArray != &(mAutoArray[0])) {
delete[] oldArray;
}
}
}
PRUint32 aIndex = 0;
while (aIndex < elements->mCount) {
NS_ADDREF(elements->mArray[aIndex]);
mArray[mCount++] = elements->mArray[aIndex++];
}
return PR_TRUE;
}
return PR_FALSE;
}
NS_IMETHODIMP
nsSupportsArray::Clear(void)
{
if (0 < mCount) {
do {
--mCount;
NS_RELEASE(mArray[mCount]);
} while (0 != mCount);
}
return NS_OK;
}
NS_IMETHODIMP
nsSupportsArray::Compact(void)
{
if ((mArraySize != mCount) && (kAutoArraySize < mArraySize)) {
nsISupports** oldArray = mArray;
PRUint32 oldArraySize = mArraySize;
if (mCount <= kAutoArraySize) {
mArray = &(mAutoArray[0]);
mArraySize = kAutoArraySize;
}
else {
mArray = new nsISupports*[mCount];
mArraySize = mCount;
}
if (0 == mArray) {
mArray = oldArray;
mArraySize = oldArraySize;
return NS_OK;
}
::memcpy(mArray, oldArray, mCount * sizeof(nsISupports*));
delete[] oldArray;
}
return NS_OK;
}
NS_IMETHODIMP_(PRBool)
nsSupportsArray::EnumerateForwards(nsISupportsArrayEnumFunc aFunc, void* aData)
{
PRInt32 aIndex = -1;
PRBool running = PR_TRUE;
while (running && (++aIndex < (PRInt32)mCount)) {
running = (*aFunc)(mArray[aIndex], aData);
}
return running;
}
NS_IMETHODIMP_(PRBool)
nsSupportsArray::EnumerateBackwards(nsISupportsArrayEnumFunc aFunc, void* aData)
{
PRUint32 aIndex = mCount;
PRBool running = PR_TRUE;
while (running && (0 < aIndex--)) {
running = (*aFunc)(mArray[aIndex], aData);
}
return running;
}
NS_IMETHODIMP
nsSupportsArray::Enumerate(nsIEnumerator* *result)
{
nsSupportsArrayEnumerator* e = new nsSupportsArrayEnumerator(this);
if (!e)
return NS_ERROR_OUT_OF_MEMORY;
*result = e;
NS_ADDREF(e);
return NS_OK;
}
NS_COM nsresult
NS_NewISupportsArray(nsISupportsArray** aInstancePtrResult)
{
nsresult rv;
rv = nsSupportsArray::Create(NULL, nsISupportsArray::GetIID(),
(void**)aInstancePtrResult);
return rv;
}

View File

@@ -1,131 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsSupportsArray_h__
#define nsSupportsArray_h__
#include "nsISupportsArray.h"
static const PRUint32 kAutoArraySize = 4;
class nsSupportsArray : public nsISupportsArray {
public:
nsSupportsArray(void);
virtual ~nsSupportsArray(void);
static NS_METHOD
Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
NS_DECL_ISUPPORTS
// nsICollection methods:
NS_IMETHOD Count(PRUint32 *result) { *result = mCount; return NS_OK; }
NS_IMETHOD GetElementAt(PRUint32 aIndex, nsISupports* *result) {
*result = ElementAt(aIndex);
return NS_OK;
}
NS_IMETHOD QueryElementAt(PRUint32 aIndex, const nsIID & aIID, void * *aResult) {
if (aIndex < mCount) {
nsISupports* element = mArray[aIndex];
if (nsnull != element)
return element->QueryInterface(aIID, aResult);
}
return NS_ERROR_FAILURE;
}
NS_IMETHOD SetElementAt(PRUint32 aIndex, nsISupports* value) {
PRBool ok = ReplaceElementAt(value, aIndex);
return ok ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHOD AppendElement(nsISupports *aElement) {
// XXX This incorrectly returns a PRBool instead of an nsresult.
return InsertElementAt(aElement, mCount);
}
NS_IMETHOD RemoveElement(nsISupports *aElement) {
// XXX This incorrectly returns a PRBool instead of an nsresult.
return RemoveElement(aElement, 0);
}
NS_IMETHOD Enumerate(nsIEnumerator* *result);
NS_IMETHOD Clear(void);
// nsISupportsArray methods:
NS_IMETHOD_(PRBool) Equals(const nsISupportsArray* aOther);
NS_IMETHOD_(nsISupports*) ElementAt(PRUint32 aIndex);
NS_IMETHOD_(PRInt32) IndexOf(const nsISupports* aPossibleElement);
NS_IMETHOD_(PRInt32) IndexOfStartingAt(const nsISupports* aPossibleElement,
PRUint32 aStartIndex = 0);
NS_IMETHOD_(PRInt32) LastIndexOf(const nsISupports* aPossibleElement);
NS_IMETHOD GetIndexOf(nsISupports *aPossibleElement, PRInt32 *_retval) {
*_retval = IndexOf(aPossibleElement);
return NS_OK;
}
NS_IMETHOD GetIndexOfStartingAt(nsISupports *aPossibleElement,
PRUint32 aStartIndex, PRInt32 *_retval) {
*_retval = IndexOfStartingAt(aPossibleElement, aStartIndex);
return NS_OK;
}
NS_IMETHOD GetLastIndexOf(nsISupports *aPossibleElement, PRInt32 *_retval) {
*_retval = LastIndexOf(aPossibleElement);
return NS_OK;
}
NS_IMETHOD_(PRBool) InsertElementAt(nsISupports* aElement, PRUint32 aIndex);
NS_IMETHOD_(PRBool) ReplaceElementAt(nsISupports* aElement, PRUint32 aIndex);
NS_IMETHOD_(PRBool) RemoveElementAt(PRUint32 aIndex);
NS_IMETHOD_(PRBool) RemoveElement(const nsISupports* aElement, PRUint32 aStartIndex = 0);
NS_IMETHOD_(PRBool) RemoveLastElement(const nsISupports* aElement);
NS_IMETHOD DeleteLastElement(nsISupports *aElement) {
return (RemoveLastElement(aElement) ? NS_OK : NS_ERROR_FAILURE);
}
NS_IMETHOD DeleteElementAt(PRUint32 aIndex) {
return (RemoveElementAt(aIndex) ? NS_OK : NS_ERROR_FAILURE);
}
NS_IMETHOD_(PRBool) AppendElements(nsISupportsArray* aElements);
NS_IMETHOD Compact(void);
NS_IMETHOD_(PRBool) EnumerateForwards(nsISupportsArrayEnumFunc aFunc, void* aData);
NS_IMETHOD_(PRBool) EnumerateBackwards(nsISupportsArrayEnumFunc aFunc, void* aData);
protected:
NS_IMETHOD_(nsISupportsArray&) operator=(const nsISupportsArray& aOther);
NS_IMETHOD_(PRBool) operator==(const nsISupportsArray& aOther) { return Equals(&aOther); }
NS_IMETHOD_(nsISupports*) operator[](PRUint32 aIndex) { return ElementAt(aIndex); }
void DeleteArray(void);
nsISupports** mArray;
PRUint32 mArraySize;
PRUint32 mCount;
nsISupports* mAutoArray[kAutoArraySize];
private:
// Copy constructors are not allowed
nsSupportsArray(const nsISupportsArray& other);
};
#endif // nsSupportsArray_h__

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