220 lines
8.8 KiB
C++
220 lines
8.8 KiB
C++
/* -*- 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):
|
|
*/
|
|
|
|
#ifndef nsPlainTextSerializer_h__
|
|
#define nsPlainTextSerializer_h__
|
|
|
|
#include "nsIContentSerializer.h"
|
|
#include "nsIHTMLContentSink.h"
|
|
#include "nsHTMLTags.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsString.h"
|
|
#include "nsILineBreaker.h"
|
|
#include "nsIParserService.h"
|
|
#include "nsIContent.h"
|
|
#include "nsIAtom.h"
|
|
#include "nsIHTMLToTextSink.h"
|
|
#include "nsIDocumentEncoder.h"
|
|
|
|
|
|
class nsPlainTextSerializer : public nsIContentSerializer,
|
|
public nsIHTMLContentSink,
|
|
public nsIHTMLToTextSink
|
|
{
|
|
public:
|
|
nsPlainTextSerializer();
|
|
virtual ~nsPlainTextSerializer();
|
|
|
|
NS_DECL_ISUPPORTS
|
|
|
|
// nsIContentSerializer
|
|
NS_IMETHOD Init(PRUint32 flags, PRUint32 aWrapColumn,
|
|
nsIAtom* aCharSet);
|
|
|
|
NS_IMETHOD AppendText(nsIDOMText* aText, PRInt32 aStartOffset,
|
|
PRInt32 aEndOffset, nsAWritableString& aStr);
|
|
NS_IMETHOD AppendCDATASection(nsIDOMCDATASection* aCDATASection,
|
|
PRInt32 aStartOffset, PRInt32 aEndOffset,
|
|
nsAWritableString& aStr) { return NS_OK; }
|
|
NS_IMETHOD AppendProcessingInstruction(nsIDOMProcessingInstruction* aPI,
|
|
PRInt32 aStartOffset,
|
|
PRInt32 aEndOffset,
|
|
nsAWritableString& aStr) { return NS_OK; }
|
|
NS_IMETHOD AppendComment(nsIDOMComment* aComment, PRInt32 aStartOffset,
|
|
PRInt32 aEndOffset, nsAWritableString& aStr) { return NS_OK; }
|
|
NS_IMETHOD AppendDoctype(nsIDOMDocumentType *aDoctype,
|
|
nsAWritableString& aStr) { return NS_OK; }
|
|
NS_IMETHOD AppendElementStart(nsIDOMElement *aElement,
|
|
nsAWritableString& aStr);
|
|
NS_IMETHOD AppendElementEnd(nsIDOMElement *aElement,
|
|
nsAWritableString& aStr);
|
|
NS_IMETHOD Flush(nsAWritableString& aStr);
|
|
|
|
// nsIContentSink
|
|
NS_IMETHOD WillBuildModel(void) { return NS_OK; }
|
|
NS_IMETHOD DidBuildModel(PRInt32 aQualityLevel) { return NS_OK; }
|
|
NS_IMETHOD WillInterrupt(void) { return NS_OK; }
|
|
NS_IMETHOD WillResume(void) { return NS_OK; }
|
|
NS_IMETHOD SetParser(nsIParser* aParser) { return NS_OK; }
|
|
NS_IMETHOD OpenContainer(const nsIParserNode& aNode);
|
|
NS_IMETHOD CloseContainer(const nsIParserNode& aNode);
|
|
NS_IMETHOD AddLeaf(const nsIParserNode& aNode);
|
|
NS_IMETHOD NotifyError(const nsParserError* aError) { return NS_OK; }
|
|
NS_IMETHOD AddComment(const nsIParserNode& aNode) { return NS_OK; }
|
|
NS_IMETHOD AddProcessingInstruction(const nsIParserNode& aNode) { return NS_OK; }
|
|
NS_IMETHOD AddDocTypeDecl(const nsIParserNode& aNode, PRInt32 aMode=0) { return NS_OK; }
|
|
NS_IMETHOD FlushPendingNotifications() { return NS_OK; }
|
|
NS_IMETHOD SetDocumentCharset(nsAWritableString& aCharset) { return NS_OK; }
|
|
|
|
// nsIHTMLContentSink
|
|
NS_IMETHOD SetTitle(const nsString& aValue) { return NS_OK; }
|
|
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 GetPref(PRInt32 aTag,PRBool& aPref) { return NS_OK; }
|
|
NS_IMETHOD DoFragment(PRBool aFlag);
|
|
NS_IMETHOD BeginContext(PRInt32 aPosition) { return NS_OK; }
|
|
NS_IMETHOD EndContext(PRInt32 aPosition) { return NS_OK; }
|
|
NS_IMETHOD WillProcessTokens(void) { return NS_OK; }
|
|
NS_IMETHOD DidProcessTokens(void) { return NS_OK; }
|
|
NS_IMETHOD WillProcessAToken(void) { return NS_OK; }
|
|
NS_IMETHOD DidProcessAToken(void) { return NS_OK; }
|
|
|
|
// nsIHTMLToTextSink
|
|
NS_IMETHOD Initialize(nsAWritableString* aOutString,
|
|
PRUint32 aFlags, PRUint32 aWrapCol);
|
|
|
|
protected:
|
|
nsresult GetAttributeValue(nsIAtom* aName, nsString& aValueRet);
|
|
void AddToLine(const PRUnichar* aStringToAdd, PRInt32 aLength);
|
|
void EndLine(PRBool softlinebreak);
|
|
void EnsureVerticalSpace(PRInt32 noOfRows);
|
|
void FlushLine();
|
|
void OutputQuotesAndIndent(PRBool stripTrailingSpaces=PR_FALSE);
|
|
void Output(nsString& aString);
|
|
void Write(const nsAReadableString& aString);
|
|
PRBool IsBlockLevel(PRInt32 aId);
|
|
PRBool IsContainer(PRInt32 aId);
|
|
PRBool IsInPre();
|
|
PRBool IsCurrentNodeConverted();
|
|
nsresult GetIdForContent(nsIContent* aContent, PRInt32* aID);
|
|
nsresult GetParserService(nsIParserService** aParserService);
|
|
nsresult DoOpenContainer(PRInt32 aTag);
|
|
nsresult DoCloseContainer(PRInt32 aTag);
|
|
nsresult DoAddLeaf(PRInt32 aTag, const nsAReadableString& aText);
|
|
|
|
// Inlined functions
|
|
inline PRBool MayWrap()
|
|
{
|
|
return mWrapColumn &&
|
|
((mFlags & nsIDocumentEncoder::OutputFormatted) ||
|
|
(mFlags & nsIDocumentEncoder::OutputWrap));
|
|
}
|
|
|
|
inline PRBool DoOutput()
|
|
{
|
|
return !mInHead;
|
|
}
|
|
|
|
protected:
|
|
nsString mCurrentLine;
|
|
|
|
PRBool mInHead;
|
|
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;
|
|
PRBool mAtFirstColumn;
|
|
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;
|
|
|
|
// Treat quoted text as though it's preformatted -- don't wrap it.
|
|
// Having it on a pref is a temporary measure, See bug 69638.
|
|
PRInt32 mSpanLevel;
|
|
PRBool mQuotesPreformatted;
|
|
|
|
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 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. */
|
|
|
|
nsCOMPtr<nsIContent> mContent;
|
|
nsIParserNode* mParserNode;
|
|
|
|
nsAWritableString* mOutputString;
|
|
|
|
// 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;
|
|
|
|
PRUint32 mULCount;
|
|
|
|
nsString mLineBreak;
|
|
nsCOMPtr<nsILineBreaker> mLineBreaker;
|
|
nsCOMPtr<nsIParserService> mParserService;
|
|
|
|
// Conveniance constant. It would be nice to have it as a const static
|
|
// variable, but that causes issues with OpenBSD and module unloading.
|
|
const nsString kSpace;
|
|
};
|
|
|
|
extern nsresult NS_NewPlainTextSerializer(nsIContentSerializer** aSerializer);
|
|
|
|
#endif
|