1183 lines
26 KiB
C++
1183 lines
26 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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/**
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* MODULE NOTES:
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* @update gess 4/1/98
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*
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* This file declares the concrete HTMLContentSink class.
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* This class is used during the parsing process as the
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* primary interface between the parser and the content
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* model.
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*/
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#include "nsHTMLContentSinkStream.h"
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#include "nsHTMLTokens.h"
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#include <iostream.h>
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#include "nsString.h"
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#include "nsIParser.h"
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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static NS_DEFINE_IID(kIContentSinkIID, NS_ICONTENT_SINK_IID);
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static NS_DEFINE_IID(kIHTMLContentSinkIID, NS_IHTML_CONTENT_SINK_IID);
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static char* gHeaderComment = "<!-- This page was created by the NGLayout output system. -->";
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static char* gDocTypeHeader = "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2//EN\">";
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const int gTabSize=2;
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static char gBuffer[500];
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/** PRETTY PRINTING PROTOTYPES **/
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PRBool IsInline(eHTMLTags aTag);
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PRBool IsBlockLevel(eHTMLTags aTag);
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PRInt32 BreakBeforeOpen(eHTMLTags aTag);
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PRInt32 BreakAfterOpen(eHTMLTags aTag);
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PRInt32 BreakBeforeClose(eHTMLTags aTag);
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PRInt32 BreakAfterClose(eHTMLTags aTag);
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PRBool IndentChildren(eHTMLTags aTag);
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PRBool PreformattedChildren(eHTMLTags aTag);
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PRBool EatOpen(eHTMLTags aTag);
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PRBool EatClose(eHTMLTags aTag);
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PRBool PermitWSBeforeOpen(eHTMLTags aTag);
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PRBool PermitWSAfterOpen(eHTMLTags aTag);
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PRBool PermitWSBeforeClose(eHTMLTags aTag);
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PRBool PermitWSAfterClose(eHTMLTags aTag);
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PRBool IgnoreWS(eHTMLTags aTag);
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/**
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* This method gets called as part of our COM-like interfaces.
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* Its purpose is to create an interface to parser object
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* of some type.
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*
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* @update gess 4/8/98
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* @param nsIID id of object to discover
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* @param aInstancePtr ptr to newly discovered interface
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* @return NS_xxx result code
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*/
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nsresult
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nsHTMLContentSinkStream::QueryInterface(const nsIID& aIID, void** aInstancePtr)
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{
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if (NULL == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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}
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if(aIID.Equals(kISupportsIID)) {
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*aInstancePtr = (nsIContentSink*)(this);
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}
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else if(aIID.Equals(kIContentSinkIID)) {
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*aInstancePtr = (nsIContentSink*)(this);
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}
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else if(aIID.Equals(kIHTMLContentSinkIID)) {
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*aInstancePtr = (nsIHTMLContentSink*)(this);
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}
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else {
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*aInstancePtr=0;
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return NS_NOINTERFACE;
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}
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NS_ADDREF_THIS();
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return NS_OK;
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}
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NS_IMPL_ADDREF(nsHTMLContentSinkStream)
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NS_IMPL_RELEASE(nsHTMLContentSinkStream)
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/**
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* This method is defined in nsIParser. It is used to
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* cause the COM-like construction of an nsParser.
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*
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* @update gess 4/8/98
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* @param nsIParser** ptr to newly instantiated parser
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* @return NS_xxx error result
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*/
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NS_HTMLPARS nsresult
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NS_New_HTML_ContentSinkStream(nsIHTMLContentSink** aInstancePtrResult,
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PRBool aDoFormat,
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PRBool aDoHeader) {
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nsHTMLContentSinkStream* it = new nsHTMLContentSinkStream(aDoFormat,aDoHeader);
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return it->QueryInterface(kIHTMLContentSinkIID, (void **)aInstancePtrResult);
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}
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/**
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* Construct a content sink stream.
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* @update gess7/7/98
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* @param
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* @return
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*/
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nsHTMLContentSinkStream::nsHTMLContentSinkStream(PRBool aDoFormat,PRBool aDoHeader) {
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mOutput=&cout;
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mLowerCaseTags = PR_TRUE;
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memset(mHTMLTagStack,0,sizeof(mHTMLTagStack));
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mHTMLStackPos = 0;
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mColPos = 0;
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mIndent = 0;
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mDoFormat = aDoFormat;
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mDoHeader = aDoHeader;
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}
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/**
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* Construct a content sink stream.
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* @update gess7/7/98
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* @param
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* @return
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*/
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nsHTMLContentSinkStream::nsHTMLContentSinkStream(ostream& aStream,PRBool aDoFormat,PRBool aDoHeader) {
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mOutput = &aStream;
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mLowerCaseTags = PR_TRUE;
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memset(mHTMLTagStack,0,sizeof(mHTMLTagStack));
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mHTMLStackPos = 0;
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mColPos = 0;
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mIndent = 0;
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mDoFormat = aDoFormat;
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mDoHeader = aDoHeader;
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}
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/**
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*
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* @update gess7/7/98
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* @param
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* @return
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*/
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nsHTMLContentSinkStream::~nsHTMLContentSinkStream() {
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mOutput=0; //we don't own the stream we're given; just forget it.
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}
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/**
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*
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* @update gess7/22/98
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* @param
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* @return
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*/
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NS_IMETHODIMP_(void)
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nsHTMLContentSinkStream::SetOutputStream(ostream& aStream){
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mOutput=&aStream;
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}
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/**
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*
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* @update gess7/7/98
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* @param
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* @return
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*/
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void nsHTMLContentSinkStream::WriteAttributes(const nsIParserNode& aNode,ostream& aStream) {
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int theCount=aNode.GetAttributeCount();
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if(theCount) {
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int i=0;
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for(i=0;i<theCount;i++){
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const nsString& temp=aNode.GetKeyAt(i);
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if (!temp.Equals(nsString("Steve's unbelievable hack attribute")))
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{
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nsString key = temp;
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if (mLowerCaseTags == PR_TRUE)
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key.ToLowerCase();
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else
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key.ToUpperCase();
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key.ToCString(gBuffer,sizeof(gBuffer)-1);
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aStream << " " << gBuffer << char(kEqual);
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mColPos += 1 + strlen(gBuffer) + 1;
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const nsString& value=aNode.GetValueAt(i);
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value.ToCString(gBuffer,sizeof(gBuffer)-1);
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aStream << "\"" << gBuffer << "\"";
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mColPos += 1 + strlen(gBuffer) + 1;
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}
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}
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}
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}
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/**
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*
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* @update gess7/5/98
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* @param
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* @return
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*/
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void OpenTagWithAttributes(const char* theTag,const nsIParserNode& aNode,int tab,ostream& aStream,PRBool aNewline) {
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int i=0;
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for(i=0;i<tab*gTabSize;i++)
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aStream << " ";
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aStream << (char)kLessThan << theTag;
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// WriteAttributes(aNode,aStream);
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aStream << (char)kGreaterThan;
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if(aNewline)
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aStream << endl;
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}
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/**
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*
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* @update gess7/5/98
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* @param
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* @return
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*/
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void OpenTag(const char* theTag,int tab,ostream& aStream,PRBool aNewline) {
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int i=0;
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for(i=0;i<tab*gTabSize;i++)
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aStream << " ";
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aStream << (char)kLessThan << theTag << (char)kGreaterThan;
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if(aNewline)
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aStream << endl;
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}
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/**
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*
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* @update gess7/5/98
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* @param
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* @return
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*/
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void CloseTag(const char* theTag,int tab,ostream& aStream) {
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int i=0;
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for(i=0;i<tab*gTabSize;i++)
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aStream << " ";
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aStream << (char)kLessThan << (char)kForwardSlash << theTag << (char)kGreaterThan << endl;
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}
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/**
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*
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* @update gess7/5/98
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* @param
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* @return
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*/
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void WritePair(eHTMLTags aTag,const nsString& theContent,int tab,ostream& aStream) {
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const char* titleStr = GetTagName(aTag);
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OpenTag(titleStr,tab,aStream,PR_FALSE);
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theContent.ToCString(gBuffer,sizeof(gBuffer)-1);
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aStream << gBuffer;
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CloseTag(titleStr,0,aStream);
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}
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/**
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* This method gets called by the parser when it encounters
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* a title tag and wants to set the document title in the sink.
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*
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* @update 4/1/98 gess
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* @param nsString reference to new title value
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* @return PR_TRUE if successful.
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*/
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NS_IMETHODIMP
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nsHTMLContentSinkStream::SetTitle(const nsString& aValue){
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if(mOutput) {
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WritePair(eHTMLTag_title,aValue,1+mTabLevel,*mOutput);
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}
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return NS_OK;
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}
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/**
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* This method is used to open the outer HTML container.
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*
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* @update 07/12/98 gpk
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* @param nsIParserNode reference to parser node interface
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* @return PR_TRUE if successful.
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*/
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NS_IMETHODIMP
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nsHTMLContentSinkStream::OpenHTML(const nsIParserNode& aNode){
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if(mOutput) {
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eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
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if (tag == eHTMLTag_html)
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AddStartTag(aNode,*mOutput);
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}
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return NS_OK;
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}
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/**
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* This method is used to close the outer HTML container.
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*
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* @update 07/12/98 gpk
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* @param nsIParserNode reference to parser node interface
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* @return PR_TRUE if successful.
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*/
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NS_IMETHODIMP
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nsHTMLContentSinkStream::CloseHTML(const nsIParserNode& aNode){
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if(mOutput) {
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eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
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if (tag == eHTMLTag_html)
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AddEndTag(aNode,*mOutput);
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mOutput->flush();
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}
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return NS_OK;
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}
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/**
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* This method is used to open the only HEAD container.
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*
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* @update 07/12/98 gpk
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* @param nsIParserNode reference to parser node interface
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* @return PR_TRUE if successful.
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*/
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NS_IMETHODIMP
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nsHTMLContentSinkStream::OpenHead(const nsIParserNode& aNode){
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if(mOutput) {
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eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
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if (tag == eHTMLTag_head)
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AddStartTag(aNode,*mOutput);
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}
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return NS_OK;
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}
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/**
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* This method is used to close the only HEAD container.
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*
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* @update 07/12/98 gpk
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* @param nsIParserNode reference to parser node interface
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* @return PR_TRUE if successful.
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*/
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NS_IMETHODIMP
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nsHTMLContentSinkStream::CloseHead(const nsIParserNode& aNode){
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if(mOutput) {
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eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
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if (tag == eHTMLTag_head)
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AddEndTag(aNode,*mOutput);
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}
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return NS_OK;
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}
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/**
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* This method is used to open the main BODY container.
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*
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* @update 07/12/98 gpk
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* @param nsIParserNode reference to parser node interface
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* @return PR_TRUE if successful.
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*/
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NS_IMETHODIMP
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nsHTMLContentSinkStream::OpenBody(const nsIParserNode& aNode){
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if(mOutput) {
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eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
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if (tag == eHTMLTag_body)
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AddStartTag(aNode,*mOutput);
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}
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return NS_OK;
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}
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/**
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* This method is used to close the main BODY container.
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*
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* @update 07/12/98 gpk
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* @param nsIParserNode reference to parser node interface
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* @return PR_TRUE if successful.
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*/
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NS_IMETHODIMP
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nsHTMLContentSinkStream::CloseBody(const nsIParserNode& aNode){
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if(mOutput) {
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eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
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if (tag == eHTMLTag_body)
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AddEndTag(aNode,*mOutput);
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}
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return NS_OK;
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}
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/**
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* This method is used to open a new FORM container.
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*
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* @update 07/12/98 gpk
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* @param nsIParserNode reference to parser node interface
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* @return PR_TRUE if successful.
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*/
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NS_IMETHODIMP
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nsHTMLContentSinkStream::OpenForm(const nsIParserNode& aNode){
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if(mOutput) {
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eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
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if (tag == eHTMLTag_form)
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AddStartTag(aNode,*mOutput);
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}
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return NS_OK;
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}
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/**
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* This method is used to close the outer FORM container.
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*
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* @update 07/12/98 gpk
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* @param nsIParserNode reference to parser node interface
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* @return PR_TRUE if successful.
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*/
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NS_IMETHODIMP
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nsHTMLContentSinkStream::CloseForm(const nsIParserNode& aNode){
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if(mOutput) {
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eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
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if (tag == eHTMLTag_form)
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AddEndTag(aNode,*mOutput);
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}
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return NS_OK;
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}
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/**
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* This method is used to open a new FORM container.
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*
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* @update 07/12/98 gpk
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* @param nsIParserNode reference to parser node interface
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* @return PR_TRUE if successful.
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*/
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NS_IMETHODIMP
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nsHTMLContentSinkStream::OpenMap(const nsIParserNode& aNode){
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if(mOutput) {
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eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
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if (tag == eHTMLTag_map)
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AddStartTag(aNode,*mOutput);
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}
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return NS_OK;
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}
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/**
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* This method is used to close the outer FORM container.
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*
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* @update 07/12/98 gpk
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* @param nsIParserNode reference to parser node interface
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* @return PR_TRUE if successful.
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*/
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NS_IMETHODIMP
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nsHTMLContentSinkStream::CloseMap(const nsIParserNode& aNode){
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if(mOutput) {
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eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
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if (tag == eHTMLTag_map)
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AddEndTag(aNode,*mOutput);
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}
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return NS_OK;
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}
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/**
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* This method is used to open the FRAMESET container.
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*
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* @update 07/12/98 gpk
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* @param nsIParserNode reference to parser node interface
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* @return PR_TRUE if successful.
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*/
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NS_IMETHODIMP
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nsHTMLContentSinkStream::OpenFrameset(const nsIParserNode& aNode){
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if(mOutput) {
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eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
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if (tag == eHTMLTag_frameset)
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AddStartTag(aNode,*mOutput);
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}
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return NS_OK;
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}
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/**
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|
* This method is used to close the FRAMESET container.
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|
*
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|
* @update 07/12/98 gpk
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* @param nsIParserNode reference to parser node interface
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* @return PR_TRUE if successful.
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*/
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NS_IMETHODIMP
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nsHTMLContentSinkStream::CloseFrameset(const nsIParserNode& aNode){
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if(mOutput) {
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eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
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if (tag == eHTMLTag_frameset)
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AddEndTag(aNode,*mOutput);
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}
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return NS_OK;
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}
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void nsHTMLContentSinkStream::AddIndent(ostream& aStream)
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{
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for (PRInt32 i = mIndent; --i >= 0; )
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{
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aStream << " ";
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mColPos += 2;
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}
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}
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void nsHTMLContentSinkStream::AddStartTag(const nsIParserNode& aNode, ostream& aStream)
|
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{
|
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eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
|
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const nsString& name = aNode.GetText();
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nsString tagName;
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mHTMLTagStack[mHTMLStackPos++] = tag;
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tagName = name;
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if (mLowerCaseTags == PR_TRUE)
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tagName.ToLowerCase();
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else
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tagName.ToUpperCase();
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|
|
|
|
|
if (mColPos != 0 && BreakBeforeOpen(tag))
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|
{
|
|
aStream << endl;
|
|
mColPos = 0;
|
|
}
|
|
|
|
if (PermitWSBeforeOpen(tag))
|
|
AddIndent(aStream);
|
|
|
|
tagName.ToCString(gBuffer,sizeof(gBuffer)-1);
|
|
aStream << (char)kLessThan << gBuffer;
|
|
mColPos += 1 + tagName.Length();
|
|
|
|
if (tag == eHTMLTag_style)
|
|
{
|
|
aStream << (char)kGreaterThan << endl;
|
|
const nsString& data = aNode.GetSkippedContent();
|
|
PRInt32 size = data.Length();
|
|
char* buffer = new char[size+1];
|
|
data.ToCString(buffer,size+1);
|
|
aStream << buffer;
|
|
delete buffer;
|
|
}
|
|
else
|
|
{
|
|
WriteAttributes(aNode,aStream);
|
|
aStream << (char)kGreaterThan;
|
|
mColPos += 1;
|
|
}
|
|
|
|
if (BreakAfterOpen(tag))
|
|
{
|
|
aStream << endl;
|
|
mColPos = 0;
|
|
}
|
|
|
|
if (IndentChildren(tag))
|
|
mIndent++;
|
|
}
|
|
|
|
|
|
|
|
|
|
void nsHTMLContentSinkStream::AddEndTag(const nsIParserNode& aNode, ostream& aStream)
|
|
{
|
|
eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
|
|
// const nsString& name = aNode.GetText();
|
|
nsString tagName;
|
|
|
|
if (tag == eHTMLTag_unknown)
|
|
{
|
|
tagName = aNode.GetText();
|
|
}
|
|
else
|
|
{
|
|
const char* name = NS_EnumToTag(tag);
|
|
tagName = name;
|
|
}
|
|
if (mLowerCaseTags == PR_TRUE)
|
|
tagName.ToLowerCase();
|
|
else
|
|
tagName.ToUpperCase();
|
|
|
|
if (IndentChildren(tag))
|
|
mIndent--;
|
|
|
|
if (BreakBeforeClose(tag))
|
|
{
|
|
if (mColPos != 0)
|
|
{
|
|
aStream << endl;
|
|
mColPos = 0;
|
|
}
|
|
AddIndent(aStream);
|
|
}
|
|
|
|
tagName.ToCString(gBuffer,sizeof(gBuffer)-1);
|
|
aStream << (char)kLessThan << (char)kForwardSlash << gBuffer << (char)kGreaterThan;
|
|
mColPos += 1 + 1 + strlen(gBuffer) + 1;
|
|
|
|
if (BreakAfterClose(tag))
|
|
{
|
|
aStream << endl;
|
|
mColPos = 0;
|
|
}
|
|
mHTMLTagStack[--mHTMLStackPos] = eHTMLTag_unknown;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* This gets called by the parser when you want to add
|
|
* a leaf node to the current container in the content
|
|
* model.
|
|
*
|
|
* @updated gpk 06/18/98
|
|
* @param
|
|
* @return
|
|
*/
|
|
nsresult
|
|
nsHTMLContentSinkStream::AddLeaf(const nsIParserNode& aNode, ostream& aStream){
|
|
eHTMLTags type = (eHTMLTags)aNode.GetNodeType();
|
|
eHTMLTags tag = eHTMLTag_unknown;
|
|
if (mHTMLStackPos > 0)
|
|
tag = mHTMLTagStack[mHTMLStackPos-1];
|
|
|
|
PRBool preformatted = PR_FALSE;
|
|
|
|
|
|
|
|
for (PRInt32 i = mHTMLStackPos-1; i >= 0; i--)
|
|
{
|
|
preformatted |= PreformattedChildren(mHTMLTagStack[i]);
|
|
if (preformatted)
|
|
break;
|
|
}
|
|
|
|
if (type == eHTMLTag_br ||
|
|
type == eHTMLTag_hr ||
|
|
type == eHTMLTag_meta ||
|
|
type == eHTMLTag_style)
|
|
{
|
|
AddStartTag(aNode,aStream);
|
|
mHTMLTagStack[--mHTMLStackPos] = eHTMLTag_unknown;
|
|
}
|
|
if (type == eHTMLTag_text)
|
|
{
|
|
const nsString& text = aNode.GetText();
|
|
if ((mDoFormat == PR_FALSE) || preformatted == PR_TRUE)
|
|
{
|
|
text.ToCString(gBuffer,sizeof(gBuffer)-1);
|
|
aStream << gBuffer;
|
|
mColPos += text.Length();
|
|
}
|
|
else
|
|
{
|
|
PRInt32 mMaxColumn = 72;
|
|
|
|
// 1. Determine the length of the input string
|
|
PRInt32 length = text.Length();
|
|
|
|
// 2. If the offset plus the length of the text is smaller
|
|
// than the max then just add it
|
|
if (mColPos + length < mMaxColumn)
|
|
{
|
|
text.ToCString(gBuffer,sizeof(gBuffer)-1);
|
|
aStream << gBuffer;
|
|
mColPos += text.Length();
|
|
}
|
|
else
|
|
{
|
|
nsString str = text;
|
|
PRBool done = PR_FALSE;
|
|
PRInt32 index = 0;
|
|
PRInt32 offset = mColPos;
|
|
|
|
while (!done)
|
|
{
|
|
// find the next break
|
|
PRInt32 start = mMaxColumn-offset;
|
|
if (start < 0)
|
|
start = 0;
|
|
|
|
index = str.Find(' ',start);
|
|
|
|
// if there is no break than just add it
|
|
if (index == kNotFound)
|
|
{
|
|
str.ToCString(gBuffer,sizeof(gBuffer)-1);
|
|
aStream << gBuffer;
|
|
mColPos += str.Length();
|
|
done = PR_TRUE;
|
|
}
|
|
else
|
|
{
|
|
// make first equal to the str from the
|
|
// beginning to the index
|
|
nsString first = str;
|
|
|
|
first.Truncate(index);
|
|
|
|
first.ToCString(gBuffer,sizeof(gBuffer)-1);
|
|
aStream << gBuffer << endl;
|
|
mColPos = 0;
|
|
|
|
// cut the string from the beginning to the index
|
|
str.Cut(0,index);
|
|
offset = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (type == eHTMLTag_whitespace)
|
|
{
|
|
if ((mDoFormat == PR_FALSE) || preformatted || IgnoreWS(tag) == PR_FALSE)
|
|
{
|
|
const nsString& text = aNode.GetText();
|
|
text.ToCString(gBuffer,sizeof(gBuffer)-1);
|
|
aStream << gBuffer;
|
|
mColPos += text.Length();
|
|
}
|
|
}
|
|
else if (type == eHTMLTag_newline)
|
|
{
|
|
if ((mDoFormat == PR_FALSE) || preformatted)
|
|
{
|
|
const nsString& text = aNode.GetText();
|
|
text.ToCString(gBuffer,sizeof(gBuffer)-1);
|
|
aStream << gBuffer;
|
|
mColPos = 0;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* This gets called by the parser when you want to add
|
|
* a PI node to the current container in the content
|
|
* model.
|
|
*
|
|
* @updated gess 3/25/98
|
|
* @param
|
|
* @return
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsHTMLContentSinkStream::AddProcessingInstruction(const nsIParserNode& aNode){
|
|
|
|
#ifdef VERBOSE_DEBUG
|
|
DebugDump("<",aNode.GetText(),(mNodeStackPos)*2);
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
/**
|
|
* This gets called by the parser when you want to add
|
|
* a comment node to the current container in the content
|
|
* model.
|
|
*
|
|
* @updated gess 3/25/98
|
|
* @param
|
|
* @return
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsHTMLContentSinkStream::AddComment(const nsIParserNode& aNode){
|
|
|
|
#ifdef VERBOSE_DEBUG
|
|
DebugDump("<",aNode.GetText(),(mNodeStackPos)*2);
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/**
|
|
* This method is used to a general container.
|
|
* This includes: OL,UL,DIR,SPAN,TABLE,H[1..6],etc.
|
|
*
|
|
* @update 07/12/98 gpk
|
|
* @param nsIParserNode reference to parser node interface
|
|
* @return PR_TRUE if successful.
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsHTMLContentSinkStream::OpenContainer(const nsIParserNode& aNode){
|
|
if(mOutput) {
|
|
AddStartTag(aNode,*mOutput);
|
|
// eHTMLTags tag = (eHTMLTags)aNode.GetNodeType();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/**
|
|
* This method is used to close a generic container.
|
|
*
|
|
* @update 07/12/98 gpk
|
|
* @param nsIParserNode reference to parser node interface
|
|
* @return PR_TRUE if successful.
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsHTMLContentSinkStream::CloseContainer(const nsIParserNode& aNode){
|
|
if(mOutput) {
|
|
AddEndTag(aNode,*mOutput);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/**
|
|
* This method is used to add a leaf to the currently
|
|
* open container.
|
|
*
|
|
* @update 07/12/98 gpk
|
|
* @param nsIParserNode reference to parser node interface
|
|
* @return PR_TRUE if successful.
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsHTMLContentSinkStream::AddLeaf(const nsIParserNode& aNode){
|
|
nsresult result = NS_OK;
|
|
if(mOutput) {
|
|
result = AddLeaf(aNode,*mOutput);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
/**
|
|
* This method gets called when the parser begins the process
|
|
* of building the content model via the content sink.
|
|
*
|
|
* @update 5/7/98 gess
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsHTMLContentSinkStream::WillBuildModel(void){
|
|
mTabLevel=-1;
|
|
if(mDoHeader && mOutput) {
|
|
(*mOutput) << gHeaderComment << endl;
|
|
(*mOutput) << gDocTypeHeader << endl;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/**
|
|
* This method gets called when the parser concludes the process
|
|
* of building the content model via the content sink.
|
|
*
|
|
* @param aQualityLevel describes how well formed the doc was.
|
|
* 0=GOOD; 1=FAIR; 2=POOR;
|
|
* @update 5/7/98 gess
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsHTMLContentSinkStream::DidBuildModel(PRInt32 aQualityLevel) {
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/**
|
|
* This method gets called when the parser gets i/o blocked,
|
|
* and wants to notify the sink that it may be a while before
|
|
* more data is available.
|
|
*
|
|
* @update 5/7/98 gess
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsHTMLContentSinkStream::WillInterrupt(void) {
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/**
|
|
* This method gets called when the parser i/o gets unblocked,
|
|
* and we're about to start dumping content again to the sink.
|
|
*
|
|
* @update 5/7/98 gess
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsHTMLContentSinkStream::WillResume(void) {
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsHTMLContentSinkStream::SetParser(nsIParser* aParser) {
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsHTMLContentSinkStream::NotifyError(nsresult aErrorResult)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/**
|
|
* **** Pretty Printing Methods ******
|
|
*
|
|
*/
|
|
|
|
|
|
|
|
PRBool IsInline(eHTMLTags aTag)
|
|
{
|
|
PRBool result = PR_FALSE;
|
|
|
|
switch (aTag)
|
|
{
|
|
case eHTMLTag_a:
|
|
case eHTMLTag_address:
|
|
case eHTMLTag_big:
|
|
case eHTMLTag_blink:
|
|
case eHTMLTag_b:
|
|
case eHTMLTag_br:
|
|
case eHTMLTag_cite:
|
|
case eHTMLTag_code:
|
|
case eHTMLTag_dfn:
|
|
case eHTMLTag_em:
|
|
case eHTMLTag_font:
|
|
case eHTMLTag_img:
|
|
case eHTMLTag_i:
|
|
case eHTMLTag_kbd:
|
|
case eHTMLTag_keygen:
|
|
case eHTMLTag_nobr:
|
|
case eHTMLTag_samp:
|
|
case eHTMLTag_small:
|
|
case eHTMLTag_spacer:
|
|
case eHTMLTag_span:
|
|
case eHTMLTag_strike:
|
|
case eHTMLTag_strong:
|
|
case eHTMLTag_sub:
|
|
case eHTMLTag_sup:
|
|
case eHTMLTag_td:
|
|
case eHTMLTag_textarea:
|
|
case eHTMLTag_tt:
|
|
case eHTMLTag_var:
|
|
case eHTMLTag_wbr:
|
|
|
|
result = PR_TRUE;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
|
|
}
|
|
return result;
|
|
}
|
|
|
|
PRBool IsBlockLevel(eHTMLTags aTag)
|
|
{
|
|
return !IsInline(aTag);
|
|
}
|
|
|
|
|
|
/**
|
|
* Desired line break state before the open tag.
|
|
*/
|
|
PRBool BreakBeforeOpen(eHTMLTags aTag) {
|
|
PRBool result = PR_FALSE;
|
|
switch (aTag)
|
|
{
|
|
case eHTMLTag_html:
|
|
result = PR_FALSE;
|
|
break;
|
|
|
|
default:
|
|
result = IsBlockLevel(aTag);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Desired line break state after the open tag.
|
|
*/
|
|
PRBool BreakAfterOpen(eHTMLTags aTag) {
|
|
PRBool result = PR_FALSE;
|
|
switch (aTag)
|
|
{
|
|
case eHTMLTag_html:
|
|
case eHTMLTag_body:
|
|
case eHTMLTag_ul:
|
|
case eHTMLTag_ol:
|
|
case eHTMLTag_table:
|
|
case eHTMLTag_tbody:
|
|
case eHTMLTag_style:
|
|
result = PR_TRUE;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Desired line break state before the close tag.
|
|
*/
|
|
PRBool BreakBeforeClose(eHTMLTags aTag) {
|
|
PRBool result = PR_FALSE;
|
|
|
|
switch (aTag)
|
|
{
|
|
case eHTMLTag_html:
|
|
case eHTMLTag_head:
|
|
case eHTMLTag_body:
|
|
case eHTMLTag_ul:
|
|
case eHTMLTag_ol:
|
|
case eHTMLTag_table:
|
|
case eHTMLTag_tbody:
|
|
case eHTMLTag_style:
|
|
result = PR_TRUE;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Desired line break state after the close tag.
|
|
*/
|
|
PRBool BreakAfterClose(eHTMLTags aTag) {
|
|
PRBool result = PR_FALSE;
|
|
|
|
switch (aTag)
|
|
{
|
|
case eHTMLTag_html:
|
|
result = PR_TRUE;
|
|
break;
|
|
|
|
default:
|
|
result = IsBlockLevel(aTag);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Indent/outdent when the open/close tags are encountered.
|
|
* This implies that BreakAfterOpen() and BreakBeforeClose()
|
|
* are true no matter what those methods return.
|
|
*/
|
|
PRBool IndentChildren(eHTMLTags aTag) {
|
|
|
|
PRBool result = PR_FALSE;
|
|
|
|
switch (aTag)
|
|
{
|
|
case eHTMLTag_table:
|
|
case eHTMLTag_ul:
|
|
case eHTMLTag_ol:
|
|
case eHTMLTag_tbody:
|
|
case eHTMLTag_form:
|
|
case eHTMLTag_frameset:
|
|
result = PR_TRUE;
|
|
break;
|
|
|
|
default:
|
|
result = PR_FALSE;
|
|
break;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* All tags after this tag and before the closing tag will be output with no
|
|
* formatting.
|
|
*/
|
|
PRBool PreformattedChildren(eHTMLTags aTag) {
|
|
PRBool result = PR_FALSE;
|
|
if (aTag == eHTMLTag_pre)
|
|
{
|
|
result = PR_TRUE;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Eat the open tag. Pretty much just for <P*>.
|
|
*/
|
|
PRBool EatOpen(eHTMLTags aTag) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
/**
|
|
* Eat the close tag. Pretty much just for </P>.
|
|
*/
|
|
PRBool EatClose(eHTMLTags aTag) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
/**
|
|
* Are we allowed to insert new white space before the open tag.
|
|
*
|
|
* Returning false does not prevent inserting WS
|
|
* before the tag if WS insertion is allowed for another reason,
|
|
* e.g. there is already WS there or we are after a tag that
|
|
* has PermitWSAfter*().
|
|
*/
|
|
PRBool PermitWSBeforeOpen(eHTMLTags aTag) {
|
|
PRBool result = IsInline(aTag) == PR_FALSE;
|
|
return result;
|
|
}
|
|
|
|
/** @see PermitWSBeforeOpen */
|
|
PRBool PermitWSAfterOpen(eHTMLTags aTag) {
|
|
if (aTag == eHTMLTag_pre)
|
|
{
|
|
return PR_FALSE;
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
|
|
/** @see PermitWSBeforeOpen */
|
|
PRBool PermitWSBeforeClose(eHTMLTags aTag) {
|
|
if (aTag == eHTMLTag_pre)
|
|
{
|
|
return PR_FALSE;
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
|
|
/** @see PermitWSBeforeOpen */
|
|
PRBool PermitWSAfterClose(eHTMLTags aTag) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
|
|
/** @see PermitWSBeforeOpen */
|
|
PRBool IgnoreWS(eHTMLTags aTag) {
|
|
PRBool result = PR_FALSE;
|
|
|
|
switch (aTag)
|
|
{
|
|
case eHTMLTag_html:
|
|
case eHTMLTag_head:
|
|
case eHTMLTag_body:
|
|
case eHTMLTag_ul:
|
|
case eHTMLTag_ol:
|
|
case eHTMLTag_li:
|
|
case eHTMLTag_table:
|
|
case eHTMLTag_tbody:
|
|
case eHTMLTag_style:
|
|
result = PR_TRUE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|