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git-svn-id: svn://10.0.0.236/trunk@86506 18797224-902f-48f8-a5cc-f745e15eee43
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bratell%lysator.liu.se 2001-02-07 06:52:24 +00:00
parent 5f0af57773
commit c4bbc667c3
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1798
mozilla/htmlparser/src/nsHTMLToTXTSinkStream.cpp
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290
mozilla/htmlparser/src/nsHTMLToTXTSinkStream.h
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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 1.1 (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.org 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.
*
* Contributor(s):
*/
/**
* MODULE NOTES:
*
* If you've been paying attention to our many content sink classes, you may be
* asking yourself, "why do we need yet another one?" The answer is that this
* implementation, unlike all the others, really sends its output a given stream
* rather than to an actual content sink (as defined in our HTML document system).
*
* We use this class for a number of purposes:
* 1) For actual document i/o using XIF (xml interchange format)
* 2) For document conversions
* 3) For debug purposes (to cause output to go to cout or a file)
*
* If no stream is declared in the constructor then all output goes to cout.
* The file is pretty printed according to the pretty printing interface. subclasses
* may choose to override this behavior or set runtime flags for desired results.
*/
#ifndef NS_HTMLTOTEXTSINK_STREAM
#define NS_HTMLTOTEXTSINK_STREAM
#include "nsIHTMLContentSink.h"
#include "nsHTMLTags.h"
#include "nsParserCIID.h"
#include "nsCOMPtr.h"
class nsIDTD;
#define NS_IHTMLTOTEXTSINKSTREAM_IID \
{0xa39c6bff, 0x15f0, 0x11d2, \
{0x80, 0x41, 0x0, 0x10, 0x4b, 0x98, 0x3f, 0xd4}}
class nsIUnicodeEncoder;
class nsILineBreaker;
class nsIOutputStream;
class nsIHTMLToTXTSinkStream : public nsIHTMLContentSink {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IHTMLTOTEXTSINKSTREAM_IID)
NS_DEFINE_STATIC_CID_ACCESSOR(NS_HTMLTOTXTSINKSTREAM_CID)
NS_IMETHOD Initialize(nsIOutputStream* aOutStream,
nsAWritableString* aOutString,
PRUint32 aFlags) = 0;
NS_IMETHOD SetCharsetOverride(const nsAReadableString* aCharset) = 0;
NS_IMETHOD SetWrapColumn(PRUint32 aWrapCol) = 0;
};
class nsHTMLToTXTSinkStream : public nsIHTMLToTXTSinkStream
{
public:
/**
* Standard constructor
* @update gpk02/03/99
*/
nsHTMLToTXTSinkStream();
/**
* virtual destructor
* @update gpk02/03/99
*/
virtual ~nsHTMLToTXTSinkStream();
NS_IMETHOD Initialize(nsIOutputStream* aOutStream,
nsAWritableString* aOutString,
PRUint32 aFlags);
NS_IMETHOD SetCharsetOverride(const nsAReadableString* aCharset);
// nsISupports
NS_DECL_ISUPPORTS
/*******************************************************************
* The following methods are inherited from nsIContentSink.
* Please see that file for details.
*******************************************************************/
NS_IMETHOD WillBuildModel(void);
NS_IMETHOD DidBuildModel(PRInt32 aQualityLevel);
NS_IMETHOD WillInterrupt(void);
NS_IMETHOD WillResume(void);
NS_IMETHOD SetParser(nsIParser* aParser);
NS_IMETHOD OpenContainer(const nsIParserNode& aNode);
NS_IMETHOD CloseContainer(const nsIParserNode& aNode);
NS_IMETHOD AddLeaf(const nsIParserNode& aNode);
NS_IMETHOD NotifyError(const nsParserError* aError);
NS_IMETHOD AddComment(const nsIParserNode& aNode);
NS_IMETHOD AddProcessingInstruction(const nsIParserNode& aNode);
NS_IMETHOD AddDocTypeDecl(const nsIParserNode& aNode, PRInt32 aMode=0);
NS_IMETHOD FlushPendingNotifications() { return NS_OK; }
/*******************************************************************
* The following methods are inherited from nsIHTMLContentSink.
* Please see that file for details.
*******************************************************************/
NS_IMETHOD SetTitle(const nsString& aValue);
NS_IMETHOD OpenHTML(const nsIParserNode& aNode);
NS_IMETHOD CloseHTML(const nsIParserNode& aNode);
NS_IMETHOD OpenHead(const nsIParserNode& aNode);
NS_IMETHOD CloseHead(const nsIParserNode& aNode);
NS_IMETHOD OpenBody(const nsIParserNode& aNode);
NS_IMETHOD CloseBody(const nsIParserNode& aNode);
NS_IMETHOD OpenForm(const nsIParserNode& aNode);
NS_IMETHOD CloseForm(const nsIParserNode& aNode);
NS_IMETHOD OpenMap(const nsIParserNode& aNode);
NS_IMETHOD CloseMap(const nsIParserNode& aNode);
NS_IMETHOD OpenFrameset(const nsIParserNode& aNode);
NS_IMETHOD CloseFrameset(const nsIParserNode& aNode);
NS_IMETHOD OpenNoscript(const nsIParserNode& aNode);
NS_IMETHOD CloseNoscript(const nsIParserNode& aNode);
NS_IMETHOD DoFragment(PRBool aFlag);
NS_IMETHOD BeginContext(PRInt32 aPosition);
NS_IMETHOD EndContext(PRInt32 aPosition);
/*******************************************************************
* The following methods are specific to this class.
*******************************************************************/
NS_IMETHOD SetWrapColumn(PRUint32 aWrapCol) { mWrapColumn = aWrapCol; return NS_OK; };
protected:
void EnsureBufferSize(PRInt32 aNewSize);
nsresult InitEncoder(const nsString& aCharset);
void AddToLine(const PRUnichar * aStringToAdd, PRInt32 aLength);
void EndLine(PRBool softlinebreak);
void EnsureVerticalSpace(PRInt32 noOfRows);
void FlushLine();
void WriteQuotesAndIndent();
void WriteSimple(nsString& aString);
void Write(const nsString& aString);
void EncodeToBuffer(nsString& aString);
NS_IMETHOD GetValueOfAttribute(const nsIParserNode& aNode,
char* aMatchKey,
nsString& aValueRet);
PRBool IsConverted(const nsIParserNode& aNode);
PRBool DoOutput();
PRBool MayWrap();
PRBool IsBlockLevel(eHTMLTags aTag);
protected:
nsIOutputStream* mStream;
// XXX This is wrong. It violates XPCOM string ownership rules.
// We're only getting away with this because instances of this
// class are restricted to single function scope.
nsAWritableString* mString;
nsString mCurrentLine;
nsIDTD* mDTD;
PRInt32 mIndent;
// mInIndentString keeps a header that has to be written in the indent.
// That could be, for instance, the bullet in a bulleted list.
nsString mInIndentString;
PRInt32 mCiteQuoteLevel;
PRInt32 mColPos;
PRInt32 mFlags;
// The wrap column is how many standard sized chars (western languages)
// should be allowed on a line. There could be less chars if the chars
// are wider than latin chars of more if the chars are more narrow.
PRUint32 mWrapColumn;
// The width of the line as it will appear on the screen (approx.)
PRUint32 mCurrentLineWidth;
PRBool mDoFragment;
PRInt32 mEmptyLines; // Will be the number of empty lines before
// the current. 0 if we are starting a new
// line and -1 if we are in a line.
PRBool mInWhitespace;
PRBool mPreFormatted;
PRBool mCacheLine; // If the line should be cached before output. This makes it possible to do smarter wrapping.
PRBool mStartedOutput; // we've produced at least a character
nsString mURL;
PRBool mStructs; // Output structs (pref)
PRInt32 mHeaderStrategy; /* Header strategy (pref)
0 = no indention
1 = indention, increased with
header level (default)
2 = numbering and slight indention */
PRInt32 mHeaderCounter[7]; /* For header-numbering:
Number of previous headers of
the same depth and in the same
section.
mHeaderCounter[1] for <h1> etc. */
// The tag stack: the stack of tags we're operating on, so we can nest:
nsHTMLTag *mTagStack;
PRUint32 mTagStackIndex;
// The stack for ordered lists:
PRInt32 *mOLStack;
PRUint32 mOLStackIndex;
char* mBuffer;
PRInt32 mBufferLength; // The length of the data in the buffer
PRInt32 mBufferSize; // The actual size of the buffer, regardless of the data
nsIUnicodeEncoder* mUnicodeEncoder;
nsString mCharsetOverride;
nsString mLineBreak;
nsILineBreaker* mLineBreaker;
};
inline nsresult
NS_New_HTMLToTXT_SinkStream(nsIHTMLContentSink** aInstancePtrResult,
nsIOutputStream* aOutStream,
const nsAReadableString* aCharsetOverride=nsnull,
PRUint32 aWrapColumn=0, PRUint32 aFlags=0)
{
nsCOMPtr<nsIHTMLToTXTSinkStream> it;
nsresult rv;
rv = nsComponentManager::CreateInstance(nsIHTMLToTXTSinkStream::GetCID(),
nsnull,
NS_GET_IID(nsIHTMLToTXTSinkStream),
getter_AddRefs(it));
if (NS_SUCCEEDED(rv)) {
rv = it->Initialize(aOutStream, nsnull, aFlags);
if (NS_SUCCEEDED(rv)) {
it->SetWrapColumn(aWrapColumn);
if (aCharsetOverride != nsnull) {
it->SetCharsetOverride(aCharsetOverride);
}
rv = it->QueryInterface(NS_GET_IID(nsIHTMLContentSink),
(void**)aInstancePtrResult);
}
}
return rv;
}
inline nsresult
NS_New_HTMLToTXT_SinkStream(nsIHTMLContentSink** aInstancePtrResult,
nsAWritableString* aOutString,
PRUint32 aWrapColumn=0, PRUint32 aFlags=0)
{
nsCOMPtr<nsIHTMLToTXTSinkStream> it;
nsresult rv;
rv = nsComponentManager::CreateInstance(nsIHTMLToTXTSinkStream::GetCID(),
nsnull,
NS_GET_IID(nsIHTMLToTXTSinkStream),
getter_AddRefs(it));
if (NS_SUCCEEDED(rv)) {
rv = it->Initialize(nsnull, aOutString, aFlags);
if (NS_SUCCEEDED(rv)) {
it->SetWrapColumn(aWrapColumn);
nsAutoString ucs2; ucs2.AssignWithConversion("ucs2");
it->SetCharsetOverride(&ucs2);
rv = it->QueryInterface(NS_GET_IID(nsIHTMLContentSink),
(void**)aInstancePtrResult);
}
}
return rv;
}
#endif

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mozilla/parser/htmlparser/src/nsHTMLToTXTSinkStream.cpp
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mozilla/parser/htmlparser/src/nsHTMLToTXTSinkStream.h
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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 1.1 (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.org 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.
*
* Contributor(s):
*/
/**
* MODULE NOTES:
*
* If you've been paying attention to our many content sink classes, you may be
* asking yourself, "why do we need yet another one?" The answer is that this
* implementation, unlike all the others, really sends its output a given stream
* rather than to an actual content sink (as defined in our HTML document system).
*
* We use this class for a number of purposes:
* 1) For actual document i/o using XIF (xml interchange format)
* 2) For document conversions
* 3) For debug purposes (to cause output to go to cout or a file)
*
* If no stream is declared in the constructor then all output goes to cout.
* The file is pretty printed according to the pretty printing interface. subclasses
* may choose to override this behavior or set runtime flags for desired results.
*/
#ifndef NS_HTMLTOTEXTSINK_STREAM
#define NS_HTMLTOTEXTSINK_STREAM
#include "nsIHTMLContentSink.h"
#include "nsHTMLTags.h"
#include "nsParserCIID.h"
#include "nsCOMPtr.h"
class nsIDTD;
#define NS_IHTMLTOTEXTSINKSTREAM_IID \
{0xa39c6bff, 0x15f0, 0x11d2, \
{0x80, 0x41, 0x0, 0x10, 0x4b, 0x98, 0x3f, 0xd4}}
class nsIUnicodeEncoder;
class nsILineBreaker;
class nsIOutputStream;
class nsIHTMLToTXTSinkStream : public nsIHTMLContentSink {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IHTMLTOTEXTSINKSTREAM_IID)
NS_DEFINE_STATIC_CID_ACCESSOR(NS_HTMLTOTXTSINKSTREAM_CID)
NS_IMETHOD Initialize(nsIOutputStream* aOutStream,
nsAWritableString* aOutString,
PRUint32 aFlags) = 0;
NS_IMETHOD SetCharsetOverride(const nsAReadableString* aCharset) = 0;
NS_IMETHOD SetWrapColumn(PRUint32 aWrapCol) = 0;
};
class nsHTMLToTXTSinkStream : public nsIHTMLToTXTSinkStream
{
public:
/**
* Standard constructor
* @update gpk02/03/99
*/
nsHTMLToTXTSinkStream();
/**
* virtual destructor
* @update gpk02/03/99
*/
virtual ~nsHTMLToTXTSinkStream();
NS_IMETHOD Initialize(nsIOutputStream* aOutStream,
nsAWritableString* aOutString,
PRUint32 aFlags);
NS_IMETHOD SetCharsetOverride(const nsAReadableString* aCharset);
// nsISupports
NS_DECL_ISUPPORTS
/*******************************************************************
* The following methods are inherited from nsIContentSink.
* Please see that file for details.
*******************************************************************/
NS_IMETHOD WillBuildModel(void);
NS_IMETHOD DidBuildModel(PRInt32 aQualityLevel);
NS_IMETHOD WillInterrupt(void);
NS_IMETHOD WillResume(void);
NS_IMETHOD SetParser(nsIParser* aParser);
NS_IMETHOD OpenContainer(const nsIParserNode& aNode);
NS_IMETHOD CloseContainer(const nsIParserNode& aNode);
NS_IMETHOD AddLeaf(const nsIParserNode& aNode);
NS_IMETHOD NotifyError(const nsParserError* aError);
NS_IMETHOD AddComment(const nsIParserNode& aNode);
NS_IMETHOD AddProcessingInstruction(const nsIParserNode& aNode);
NS_IMETHOD AddDocTypeDecl(const nsIParserNode& aNode, PRInt32 aMode=0);
NS_IMETHOD FlushPendingNotifications() { return NS_OK; }
/*******************************************************************
* The following methods are inherited from nsIHTMLContentSink.
* Please see that file for details.
*******************************************************************/
NS_IMETHOD SetTitle(const nsString& aValue);
NS_IMETHOD OpenHTML(const nsIParserNode& aNode);
NS_IMETHOD CloseHTML(const nsIParserNode& aNode);
NS_IMETHOD OpenHead(const nsIParserNode& aNode);
NS_IMETHOD CloseHead(const nsIParserNode& aNode);
NS_IMETHOD OpenBody(const nsIParserNode& aNode);
NS_IMETHOD CloseBody(const nsIParserNode& aNode);
NS_IMETHOD OpenForm(const nsIParserNode& aNode);
NS_IMETHOD CloseForm(const nsIParserNode& aNode);
NS_IMETHOD OpenMap(const nsIParserNode& aNode);
NS_IMETHOD CloseMap(const nsIParserNode& aNode);
NS_IMETHOD OpenFrameset(const nsIParserNode& aNode);
NS_IMETHOD CloseFrameset(const nsIParserNode& aNode);
NS_IMETHOD OpenNoscript(const nsIParserNode& aNode);
NS_IMETHOD CloseNoscript(const nsIParserNode& aNode);
NS_IMETHOD DoFragment(PRBool aFlag);
NS_IMETHOD BeginContext(PRInt32 aPosition);
NS_IMETHOD EndContext(PRInt32 aPosition);
/*******************************************************************
* The following methods are specific to this class.
*******************************************************************/
NS_IMETHOD SetWrapColumn(PRUint32 aWrapCol) { mWrapColumn = aWrapCol; return NS_OK; };
protected:
void EnsureBufferSize(PRInt32 aNewSize);
nsresult InitEncoder(const nsString& aCharset);
void AddToLine(const PRUnichar * aStringToAdd, PRInt32 aLength);
void EndLine(PRBool softlinebreak);
void EnsureVerticalSpace(PRInt32 noOfRows);
void FlushLine();
void WriteQuotesAndIndent();
void WriteSimple(nsString& aString);
void Write(const nsString& aString);
void EncodeToBuffer(nsString& aString);
NS_IMETHOD GetValueOfAttribute(const nsIParserNode& aNode,
char* aMatchKey,
nsString& aValueRet);
PRBool IsConverted(const nsIParserNode& aNode);
PRBool DoOutput();
PRBool MayWrap();
PRBool IsBlockLevel(eHTMLTags aTag);
protected:
nsIOutputStream* mStream;
// XXX This is wrong. It violates XPCOM string ownership rules.
// We're only getting away with this because instances of this
// class are restricted to single function scope.
nsAWritableString* mString;
nsString mCurrentLine;
nsIDTD* mDTD;
PRInt32 mIndent;
// mInIndentString keeps a header that has to be written in the indent.
// That could be, for instance, the bullet in a bulleted list.
nsString mInIndentString;
PRInt32 mCiteQuoteLevel;
PRInt32 mColPos;
PRInt32 mFlags;
// The wrap column is how many standard sized chars (western languages)
// should be allowed on a line. There could be less chars if the chars
// are wider than latin chars of more if the chars are more narrow.
PRUint32 mWrapColumn;
// The width of the line as it will appear on the screen (approx.)
PRUint32 mCurrentLineWidth;
PRBool mDoFragment;
PRInt32 mEmptyLines; // Will be the number of empty lines before
// the current. 0 if we are starting a new
// line and -1 if we are in a line.
PRBool mInWhitespace;
PRBool mPreFormatted;
PRBool mCacheLine; // If the line should be cached before output. This makes it possible to do smarter wrapping.
PRBool mStartedOutput; // we've produced at least a character
nsString mURL;
PRBool mStructs; // Output structs (pref)
PRInt32 mHeaderStrategy; /* Header strategy (pref)
0 = no indention
1 = indention, increased with
header level (default)
2 = numbering and slight indention */
PRInt32 mHeaderCounter[7]; /* For header-numbering:
Number of previous headers of
the same depth and in the same
section.
mHeaderCounter[1] for <h1> etc. */
// The tag stack: the stack of tags we're operating on, so we can nest:
nsHTMLTag *mTagStack;
PRUint32 mTagStackIndex;
// The stack for ordered lists:
PRInt32 *mOLStack;
PRUint32 mOLStackIndex;
char* mBuffer;
PRInt32 mBufferLength; // The length of the data in the buffer
PRInt32 mBufferSize; // The actual size of the buffer, regardless of the data
nsIUnicodeEncoder* mUnicodeEncoder;
nsString mCharsetOverride;
nsString mLineBreak;
nsILineBreaker* mLineBreaker;
};
inline nsresult
NS_New_HTMLToTXT_SinkStream(nsIHTMLContentSink** aInstancePtrResult,
nsIOutputStream* aOutStream,
const nsAReadableString* aCharsetOverride=nsnull,
PRUint32 aWrapColumn=0, PRUint32 aFlags=0)
{
nsCOMPtr<nsIHTMLToTXTSinkStream> it;
nsresult rv;
rv = nsComponentManager::CreateInstance(nsIHTMLToTXTSinkStream::GetCID(),
nsnull,
NS_GET_IID(nsIHTMLToTXTSinkStream),
getter_AddRefs(it));
if (NS_SUCCEEDED(rv)) {
rv = it->Initialize(aOutStream, nsnull, aFlags);
if (NS_SUCCEEDED(rv)) {
it->SetWrapColumn(aWrapColumn);
if (aCharsetOverride != nsnull) {
it->SetCharsetOverride(aCharsetOverride);
}
rv = it->QueryInterface(NS_GET_IID(nsIHTMLContentSink),
(void**)aInstancePtrResult);
}
}
return rv;
}
inline nsresult
NS_New_HTMLToTXT_SinkStream(nsIHTMLContentSink** aInstancePtrResult,
nsAWritableString* aOutString,
PRUint32 aWrapColumn=0, PRUint32 aFlags=0)
{
nsCOMPtr<nsIHTMLToTXTSinkStream> it;
nsresult rv;
rv = nsComponentManager::CreateInstance(nsIHTMLToTXTSinkStream::GetCID(),
nsnull,
NS_GET_IID(nsIHTMLToTXTSinkStream),
getter_AddRefs(it));
if (NS_SUCCEEDED(rv)) {
rv = it->Initialize(nsnull, aOutString, aFlags);
if (NS_SUCCEEDED(rv)) {
it->SetWrapColumn(aWrapColumn);
nsAutoString ucs2; ucs2.AssignWithConversion("ucs2");
it->SetCharsetOverride(&ucs2);
rv = it->QueryInterface(NS_GET_IID(nsIHTMLContentSink),
(void**)aInstancePtrResult);
}
}
return rv;
}
#endif