mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
1079 lines
33 KiB
C++
1079 lines
33 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Laurent Jouanneau <laurent.jouanneau@disruptive-innovations.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* nsIContentSerializer implementation that can be used with an
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* nsIDocumentEncoder to convert an XML DOM to an XML string that
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* could be parsed into more or less the original DOM.
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*/
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#include "nsXMLContentSerializer.h"
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#include "nsGkAtoms.h"
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#include "nsIDOMText.h"
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#include "nsIDOMCDATASection.h"
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#include "nsIDOMProcessingInstruction.h"
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#include "nsIDOMComment.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMDocumentType.h"
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#include "nsIDOMElement.h"
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#include "nsIContent.h"
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#include "nsIDocument.h"
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#include "nsIDocumentEncoder.h"
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#include "nsINameSpaceManager.h"
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#include "nsTextFragment.h"
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#include "nsString.h"
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#include "prprf.h"
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#include "nsUnicharUtils.h"
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#include "nsCRT.h"
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#include "nsContentUtils.h"
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#include "nsAttrName.h"
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typedef struct {
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nsString mPrefix;
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nsString mURI;
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nsIDOMElement* mOwner;
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} NameSpaceDecl;
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nsresult NS_NewXMLContentSerializer(nsIContentSerializer** aSerializer)
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{
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nsXMLContentSerializer* it = new nsXMLContentSerializer();
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if (!it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return CallQueryInterface(it, aSerializer);
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}
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nsXMLContentSerializer::nsXMLContentSerializer()
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: mPrefixIndex(0),
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mColPos(0),
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mInAttribute(PR_FALSE),
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mAddNewline(PR_FALSE)
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{
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}
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nsXMLContentSerializer::~nsXMLContentSerializer()
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{
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}
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NS_IMPL_ISUPPORTS1(nsXMLContentSerializer, nsIContentSerializer)
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NS_IMETHODIMP
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nsXMLContentSerializer::Init(PRUint32 aFlags, PRUint32 aWrapColumn,
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const char* aCharSet, PRBool aIsCopying,
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PRBool aIsWholeDocument)
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{
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mCharset = aCharSet;
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mFlags = aFlags;
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// Set the line break character:
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if ((mFlags & nsIDocumentEncoder::OutputCRLineBreak)
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&& (mFlags & nsIDocumentEncoder::OutputLFLineBreak)) { // Windows
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mLineBreak.AssignLiteral("\r\n");
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}
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else if (mFlags & nsIDocumentEncoder::OutputCRLineBreak) { // Mac
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mLineBreak.AssignLiteral("\r");
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}
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else if (mFlags & nsIDocumentEncoder::OutputLFLineBreak) { // Unix/DOM
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mLineBreak.AssignLiteral("\n");
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}
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else {
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mLineBreak.AssignLiteral(NS_LINEBREAK); // Platform/default
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}
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return NS_OK;
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}
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nsresult
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nsXMLContentSerializer::AppendTextData(nsIDOMNode* aNode,
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PRInt32 aStartOffset,
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PRInt32 aEndOffset,
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nsAString& aStr,
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PRBool aTranslateEntities,
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PRBool aIncrColumn)
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{
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nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
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const nsTextFragment* frag;
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if (!content || !(frag = content->GetText())) {
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return NS_ERROR_FAILURE;
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}
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PRInt32 endoffset = (aEndOffset == -1) ? frag->GetLength() : aEndOffset;
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PRInt32 length = endoffset - aStartOffset;
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NS_ASSERTION(aStartOffset >= 0, "Negative start offset for text fragment!");
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NS_ASSERTION(aStartOffset <= endoffset, "A start offset is beyond the end of the text fragment!");
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if (length <= 0) {
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// XXX Zero is a legal value, maybe non-zero values should be an
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// error.
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return NS_OK;
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}
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if (frag->Is2b()) {
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const PRUnichar *strStart = frag->Get2b() + aStartOffset;
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AppendToString(Substring(strStart, strStart + length), aStr,
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aTranslateEntities, aIncrColumn);
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}
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else {
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AppendToString(NS_ConvertASCIItoUTF16(frag->Get1b()+aStartOffset, length),
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aStr, aTranslateEntities, aIncrColumn);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXMLContentSerializer::AppendText(nsIDOMText* aText,
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PRInt32 aStartOffset,
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PRInt32 aEndOffset,
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nsAString& aStr)
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{
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NS_ENSURE_ARG(aText);
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nsAutoString data;
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nsresult rv;
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rv = AppendTextData(aText, aStartOffset, aEndOffset, data, PR_TRUE, PR_TRUE);
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if (NS_FAILED(rv))
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return NS_ERROR_FAILURE;
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AppendToStringConvertLF(data, aStr);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXMLContentSerializer::AppendCDATASection(nsIDOMCDATASection* aCDATASection,
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PRInt32 aStartOffset,
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PRInt32 aEndOffset,
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nsAString& aStr)
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{
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NS_ENSURE_ARG(aCDATASection);
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nsresult rv;
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AppendToString(NS_LITERAL_STRING("<![CDATA["), aStr);
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rv = AppendTextData(aCDATASection, aStartOffset, aEndOffset, aStr, PR_FALSE, PR_TRUE);
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if (NS_FAILED(rv)) return NS_ERROR_FAILURE;
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AppendToString(NS_LITERAL_STRING("]]>"), aStr);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXMLContentSerializer::AppendProcessingInstruction(nsIDOMProcessingInstruction* aPI,
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PRInt32 aStartOffset,
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PRInt32 aEndOffset,
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nsAString& aStr)
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{
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NS_ENSURE_ARG(aPI);
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nsresult rv;
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nsAutoString target, data;
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MaybeAddNewline(aStr);
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rv = aPI->GetTarget(target);
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if (NS_FAILED(rv)) return NS_ERROR_FAILURE;
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rv = aPI->GetData(data);
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if (NS_FAILED(rv)) return NS_ERROR_FAILURE;
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AppendToString(NS_LITERAL_STRING("<?"), aStr);
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AppendToString(target, aStr);
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if (!data.IsEmpty()) {
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AppendToString(NS_LITERAL_STRING(" "), aStr);
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AppendToStringConvertLF(data, aStr);
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}
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AppendToString(NS_LITERAL_STRING("?>"), aStr);
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MaybeFlagNewline(aPI);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXMLContentSerializer::AppendComment(nsIDOMComment* aComment,
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PRInt32 aStartOffset,
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PRInt32 aEndOffset,
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nsAString& aStr)
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{
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NS_ENSURE_ARG(aComment);
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nsresult rv;
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nsAutoString data;
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rv = aComment->GetData(data);
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if (NS_FAILED(rv)) return NS_ERROR_FAILURE;
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MaybeAddNewline(aStr);
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AppendToString(NS_LITERAL_STRING("<!--"), aStr);
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if (aStartOffset || (aEndOffset != -1)) {
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PRInt32 length = (aEndOffset == -1) ? data.Length() : aEndOffset;
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length -= aStartOffset;
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nsAutoString frag;
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data.Mid(frag, aStartOffset, length);
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AppendToStringConvertLF(frag, aStr);
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}
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else {
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AppendToStringConvertLF(data, aStr);
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}
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AppendToString(NS_LITERAL_STRING("-->"), aStr);
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MaybeFlagNewline(aComment);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXMLContentSerializer::AppendDoctype(nsIDOMDocumentType *aDoctype,
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nsAString& aStr)
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{
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NS_ENSURE_ARG(aDoctype);
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nsresult rv;
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nsAutoString name, publicId, systemId, internalSubset;
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rv = aDoctype->GetName(name);
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if (NS_FAILED(rv)) return NS_ERROR_FAILURE;
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rv = aDoctype->GetPublicId(publicId);
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if (NS_FAILED(rv)) return NS_ERROR_FAILURE;
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rv = aDoctype->GetSystemId(systemId);
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if (NS_FAILED(rv)) return NS_ERROR_FAILURE;
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rv = aDoctype->GetInternalSubset(internalSubset);
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if (NS_FAILED(rv)) return NS_ERROR_FAILURE;
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MaybeAddNewline(aStr);
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AppendToString(NS_LITERAL_STRING("<!DOCTYPE "), aStr);
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AppendToString(name, aStr);
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PRUnichar quote;
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if (!publicId.IsEmpty()) {
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AppendToString(NS_LITERAL_STRING(" PUBLIC "), aStr);
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if (publicId.FindChar(PRUnichar('"')) == -1) {
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quote = PRUnichar('"');
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}
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else {
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quote = PRUnichar('\'');
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}
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AppendToString(quote, aStr);
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AppendToString(publicId, aStr);
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AppendToString(quote, aStr);
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if (!systemId.IsEmpty()) {
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AppendToString(PRUnichar(' '), aStr);
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if (systemId.FindChar(PRUnichar('"')) == -1) {
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quote = PRUnichar('"');
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}
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else {
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quote = PRUnichar('\'');
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}
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AppendToString(quote, aStr);
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AppendToString(systemId, aStr);
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AppendToString(quote, aStr);
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}
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}
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else if (!systemId.IsEmpty()) {
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if (systemId.FindChar(PRUnichar('"')) == -1) {
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quote = PRUnichar('"');
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}
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else {
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quote = PRUnichar('\'');
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}
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AppendToString(NS_LITERAL_STRING(" SYSTEM "), aStr);
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AppendToString(quote, aStr);
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AppendToString(systemId, aStr);
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AppendToString(quote, aStr);
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}
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if (!internalSubset.IsEmpty()) {
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AppendToString(NS_LITERAL_STRING(" ["), aStr);
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AppendToString(internalSubset, aStr);
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AppendToString(PRUnichar(']'), aStr);
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}
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AppendToString(PRUnichar('>'), aStr);
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MaybeFlagNewline(aDoctype);
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return NS_OK;
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}
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#define kXMLNS "xmlns"
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nsresult
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nsXMLContentSerializer::PushNameSpaceDecl(const nsAString& aPrefix,
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const nsAString& aURI,
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nsIDOMElement* aOwner)
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{
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NameSpaceDecl* decl = new NameSpaceDecl();
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if (!decl) return NS_ERROR_OUT_OF_MEMORY;
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decl->mPrefix.Assign(aPrefix);
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decl->mURI.Assign(aURI);
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// Don't addref - this weak reference will be removed when
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// we pop the stack
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decl->mOwner = aOwner;
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mNameSpaceStack.AppendElement((void*)decl);
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return NS_OK;
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}
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void
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nsXMLContentSerializer::PopNameSpaceDeclsFor(nsIDOMElement* aOwner)
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{
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PRInt32 index, count;
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count = mNameSpaceStack.Count();
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for (index = count - 1; index >= 0; index--) {
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NameSpaceDecl* decl = (NameSpaceDecl*)mNameSpaceStack.ElementAt(index);
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if (decl->mOwner != aOwner) {
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break;
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}
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mNameSpaceStack.RemoveElementAt(index);
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delete decl;
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}
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}
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PRBool
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nsXMLContentSerializer::ConfirmPrefix(nsAString& aPrefix,
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const nsAString& aURI,
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nsIDOMElement* aElement,
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PRBool aIsAttribute)
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{
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if (aPrefix.EqualsLiteral(kXMLNS)) {
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return PR_FALSE;
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}
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if (aURI.EqualsLiteral("http://www.w3.org/XML/1998/namespace")) {
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// The prefix must be xml for this namespace. We don't need to declare it,
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// so always just set the prefix to xml.
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aPrefix.AssignLiteral("xml");
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return PR_FALSE;
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}
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PRBool mustHavePrefix;
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if (aIsAttribute) {
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if (aURI.IsEmpty()) {
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// Attribute in the null namespace. This just shouldn't have a prefix.
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// And there's no need to push any namespace decls
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aPrefix.Truncate();
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return PR_FALSE;
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}
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// Attribute not in the null namespace -- must have a prefix
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mustHavePrefix = PR_TRUE;
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} else {
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// Not an attribute, so doesn't _have_ to have a prefix
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mustHavePrefix = PR_FALSE;
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}
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// Keep track of the closest prefix that's bound to aURI and whether we've
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// found such a thing. closestURIMatch holds the prefix, and uriMatch
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// indicates whether we actually have one.
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nsAutoString closestURIMatch;
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PRBool uriMatch = PR_FALSE;
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// Also keep track of whether we've seen aPrefix already. If we have, that
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// means that it's already bound to a URI different from aURI, so even if we
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// later (so in a more outer scope) see it bound to aURI we can't reuse it.
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PRBool haveSeenOurPrefix = PR_FALSE;
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PRInt32 count = mNameSpaceStack.Count();
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PRInt32 index = count - 1;
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while (index >= 0) {
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NameSpaceDecl* decl = (NameSpaceDecl*)mNameSpaceStack.ElementAt(index);
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// Check if we've found a prefix match
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if (aPrefix.Equals(decl->mPrefix)) {
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// If the URIs match and aPrefix is not bound to any other URI, we can
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// use aPrefix
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if (!haveSeenOurPrefix && aURI.Equals(decl->mURI)) {
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// Just use our uriMatch stuff. That will deal with an empty aPrefix
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// the right way. We can break out of the loop now, though.
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uriMatch = PR_TRUE;
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closestURIMatch = aPrefix;
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break;
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}
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haveSeenOurPrefix = PR_TRUE;
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// If they don't, and either:
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// 1) We have a prefix (so we'd be redeclaring this prefix to point to a
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// different namespace) or
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// 2) We're looking at an existing default namespace decl on aElement (so
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// we can't create a new default namespace decl for this URI)
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// then generate a new prefix. Note that we do NOT generate new prefixes
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// if we happen to have aPrefix == decl->mPrefix == "" and mismatching
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// URIs when |decl| doesn't have aElement as its owner. In that case we
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// can simply push the new namespace URI as the default namespace for
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// aElement.
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if (!aPrefix.IsEmpty() || decl->mOwner == aElement) {
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NS_ASSERTION(!aURI.IsEmpty(),
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|
"Not allowed to add a xmlns attribute with an empty "
|
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"namespace name unless it declares the default "
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"namespace.");
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|
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GenerateNewPrefix(aPrefix);
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// Now we need to validate our new prefix/uri combination; check it
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|
// against the full namespace stack again. Note that just restarting
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// the while loop is ok, since we haven't changed aURI, so the
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// closestURIMatch and uriMatch state is not affected.
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index = count - 1;
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haveSeenOurPrefix = PR_FALSE;
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continue;
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}
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|
}
|
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|
|
// If we've found a URI match, then record the first one
|
|
if (!uriMatch && aURI.Equals(decl->mURI)) {
|
|
// Need to check that decl->mPrefix is not declared anywhere closer to
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|
// us. If it is, we can't use it.
|
|
PRBool prefixOK = PR_TRUE;
|
|
PRInt32 index2;
|
|
for (index2 = count-1; index2 > index && prefixOK; --index2) {
|
|
NameSpaceDecl* decl2 =
|
|
(NameSpaceDecl*)mNameSpaceStack.ElementAt(index2);
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|
prefixOK = (decl2->mPrefix != decl->mPrefix);
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|
}
|
|
|
|
if (prefixOK) {
|
|
uriMatch = PR_TRUE;
|
|
closestURIMatch.Assign(decl->mPrefix);
|
|
}
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|
}
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|
|
--index;
|
|
}
|
|
|
|
// At this point the following invariants hold:
|
|
// 1) The prefix in closestURIMatch is mapped to aURI in our scope if
|
|
// uriMatch is set.
|
|
// 2) There is nothing on the namespace stack that has aPrefix as the prefix
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|
// and a _different_ URI, except for the case aPrefix.IsEmpty (and
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// possible default namespaces on ancestors)
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|
|
// So if uriMatch is set it's OK to use the closestURIMatch prefix. The one
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|
// exception is when closestURIMatch is actually empty (default namespace
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|
// decl) and we must have a prefix.
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|
if (uriMatch && (!mustHavePrefix || !closestURIMatch.IsEmpty())) {
|
|
aPrefix.Assign(closestURIMatch);
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|
return PR_FALSE;
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|
}
|
|
|
|
if (aPrefix.IsEmpty()) {
|
|
// At this point, aPrefix is empty (which means we never had a prefix to
|
|
// start with). If we must have a prefix, just generate a new prefix and
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|
// then send it back through the namespace stack checks to make sure it's
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|
// OK.
|
|
if (mustHavePrefix) {
|
|
GenerateNewPrefix(aPrefix);
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|
return ConfirmPrefix(aPrefix, aURI, aElement, aIsAttribute);
|
|
}
|
|
|
|
// One final special case. If aPrefix is empty and we never saw an empty
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|
// prefix (default namespace decl) on the namespace stack and we're in the
|
|
// null namespace there is no reason to output an |xmlns=""| here. It just
|
|
// makes the output less readable.
|
|
if (!haveSeenOurPrefix && aURI.IsEmpty()) {
|
|
return PR_FALSE;
|
|
}
|
|
}
|
|
|
|
// Now just set aURI as the new default namespace URI. Indicate that we need
|
|
// to create a namespace decl for the final prefix
|
|
return PR_TRUE;
|
|
}
|
|
|
|
void
|
|
nsXMLContentSerializer::GenerateNewPrefix(nsAString& aPrefix)
|
|
{
|
|
aPrefix.AssignLiteral("a");
|
|
char buf[128];
|
|
PR_snprintf(buf, sizeof(buf), "%d", mPrefixIndex++);
|
|
AppendASCIItoUTF16(buf, aPrefix);
|
|
}
|
|
|
|
void
|
|
nsXMLContentSerializer::SerializeAttr(const nsAString& aPrefix,
|
|
const nsAString& aName,
|
|
const nsAString& aValue,
|
|
nsAString& aStr,
|
|
PRBool aDoEscapeEntities)
|
|
{
|
|
AppendToString(PRUnichar(' '), aStr);
|
|
if (!aPrefix.IsEmpty()) {
|
|
AppendToString(aPrefix, aStr);
|
|
AppendToString(PRUnichar(':'), aStr);
|
|
}
|
|
AppendToString(aName, aStr);
|
|
|
|
if ( aDoEscapeEntities ) {
|
|
// if problem characters are turned into character entity references
|
|
// then there will be no problem with the value delimiter characters
|
|
AppendToString(NS_LITERAL_STRING("=\""), aStr);
|
|
|
|
mInAttribute = PR_TRUE;
|
|
AppendToString(aValue, aStr, PR_TRUE);
|
|
mInAttribute = PR_FALSE;
|
|
|
|
AppendToString(PRUnichar('"'), aStr);
|
|
}
|
|
else {
|
|
// Depending on whether the attribute value contains quotes or apostrophes we
|
|
// need to select the delimiter character and escape characters using
|
|
// character entity references, ignoring the value of aDoEscapeEntities.
|
|
// See http://www.w3.org/TR/REC-html40/appendix/notes.html#h-B.3.2.2 for
|
|
// the standard on character entity references in values. We also have to
|
|
// make sure to escape any '&' characters.
|
|
|
|
PRBool bIncludesSingle = PR_FALSE;
|
|
PRBool bIncludesDouble = PR_FALSE;
|
|
nsAString::const_iterator iCurr, iEnd;
|
|
PRUint32 uiSize, i;
|
|
aValue.BeginReading(iCurr);
|
|
aValue.EndReading(iEnd);
|
|
for ( ; iCurr != iEnd; iCurr.advance(uiSize) ) {
|
|
const PRUnichar * buf = iCurr.get();
|
|
uiSize = iCurr.size_forward();
|
|
for ( i = 0; i < uiSize; i++, buf++ ) {
|
|
if ( *buf == PRUnichar('\'') )
|
|
{
|
|
bIncludesSingle = PR_TRUE;
|
|
if ( bIncludesDouble ) break;
|
|
}
|
|
else if ( *buf == PRUnichar('"') )
|
|
{
|
|
bIncludesDouble = PR_TRUE;
|
|
if ( bIncludesSingle ) break;
|
|
}
|
|
}
|
|
// if both have been found we don't need to search further
|
|
if ( bIncludesDouble && bIncludesSingle ) break;
|
|
}
|
|
|
|
// Delimiter and escaping is according to the following table
|
|
// bIncludesDouble bIncludesSingle Delimiter Escape Double Quote
|
|
// FALSE FALSE " FALSE
|
|
// FALSE TRUE " FALSE
|
|
// TRUE FALSE ' FALSE
|
|
// TRUE TRUE " TRUE
|
|
PRUnichar cDelimiter =
|
|
(bIncludesDouble && !bIncludesSingle) ? PRUnichar('\'') : PRUnichar('"');
|
|
AppendToString(PRUnichar('='), aStr);
|
|
AppendToString(cDelimiter, aStr);
|
|
nsAutoString sValue(aValue);
|
|
sValue.ReplaceSubstring(NS_LITERAL_STRING("&"),
|
|
NS_LITERAL_STRING("&"));
|
|
if (bIncludesDouble && bIncludesSingle) {
|
|
sValue.ReplaceSubstring(NS_LITERAL_STRING("\""),
|
|
NS_LITERAL_STRING("""));
|
|
}
|
|
mInAttribute = PR_TRUE;
|
|
AppendToString(sValue, aStr, PR_FALSE);
|
|
mInAttribute = PR_FALSE;
|
|
AppendToString(cDelimiter, aStr);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsXMLContentSerializer::AppendElementStart(nsIDOMElement *aElement,
|
|
nsIDOMElement *aOriginalElement,
|
|
nsAString& aStr)
|
|
{
|
|
NS_ENSURE_ARG(aElement);
|
|
|
|
nsAutoString tagPrefix, tagLocalName, tagNamespaceURI;
|
|
nsAutoString xmlnsStr;
|
|
xmlnsStr.AssignLiteral(kXMLNS);
|
|
|
|
nsCOMPtr<nsIContent> content(do_QueryInterface(aElement));
|
|
if (!content) return NS_ERROR_FAILURE;
|
|
|
|
aElement->GetPrefix(tagPrefix);
|
|
aElement->GetLocalName(tagLocalName);
|
|
aElement->GetNamespaceURI(tagNamespaceURI);
|
|
|
|
PRUint32 index, count;
|
|
nsAutoString nameStr, prefixStr, uriStr, valueStr;
|
|
|
|
count = content->GetAttrCount();
|
|
|
|
// First scan for namespace declarations, pushing each on the stack
|
|
PRUint32 skipAttr = count;
|
|
for (index = 0; index < count; index++) {
|
|
|
|
const nsAttrName* name = content->GetAttrNameAt(index);
|
|
PRInt32 namespaceID = name->NamespaceID();
|
|
nsIAtom *attrName = name->LocalName();
|
|
|
|
if (namespaceID == kNameSpaceID_XMLNS ||
|
|
// Also push on the stack attrs named "xmlns" in the null
|
|
// namespace... because once we serialize those out they'll look like
|
|
// namespace decls. :(
|
|
// XXXbz what if we have both "xmlns" in the null namespace and "xmlns"
|
|
// in the xmlns namespace?
|
|
(namespaceID == kNameSpaceID_None &&
|
|
attrName == nsGkAtoms::xmlns)) {
|
|
content->GetAttr(namespaceID, attrName, uriStr);
|
|
|
|
if (!name->GetPrefix()) {
|
|
if (tagNamespaceURI.IsEmpty() && !uriStr.IsEmpty()) {
|
|
// If the element is in no namespace we need to add a xmlns
|
|
// attribute to declare that. That xmlns attribute must not have a
|
|
// prefix (see http://www.w3.org/TR/REC-xml-names/#dt-prefix), ie it
|
|
// must declare the default namespace. We just found an xmlns
|
|
// attribute that declares the default namespace to something
|
|
// non-empty. We're going to ignore this attribute, for children we
|
|
// will detect that we need to add it again and attributes aren't
|
|
// affected by the default namespace.
|
|
skipAttr = index;
|
|
}
|
|
else {
|
|
// Default NS attribute does not have prefix (and the name is "xmlns")
|
|
PushNameSpaceDecl(EmptyString(), uriStr, aOriginalElement);
|
|
}
|
|
}
|
|
else {
|
|
attrName->ToString(nameStr);
|
|
PushNameSpaceDecl(nameStr, uriStr, aOriginalElement);
|
|
}
|
|
}
|
|
}
|
|
|
|
PRBool addNSAttr;
|
|
|
|
MaybeAddNewline(aStr);
|
|
|
|
addNSAttr = ConfirmPrefix(tagPrefix, tagNamespaceURI, aOriginalElement,
|
|
PR_FALSE);
|
|
// Serialize the qualified name of the element
|
|
AppendToString(NS_LITERAL_STRING("<"), aStr);
|
|
if (!tagPrefix.IsEmpty()) {
|
|
AppendToString(tagPrefix, aStr);
|
|
AppendToString(NS_LITERAL_STRING(":"), aStr);
|
|
}
|
|
AppendToString(tagLocalName, aStr);
|
|
|
|
// If we had to add a new namespace declaration, serialize
|
|
// and push it on the namespace stack
|
|
if (addNSAttr) {
|
|
if (tagPrefix.IsEmpty()) {
|
|
// Serialize default namespace decl
|
|
SerializeAttr(EmptyString(), xmlnsStr, tagNamespaceURI, aStr, PR_TRUE);
|
|
} else {
|
|
// Serialize namespace decl
|
|
SerializeAttr(xmlnsStr, tagPrefix, tagNamespaceURI, aStr, PR_TRUE);
|
|
}
|
|
PushNameSpaceDecl(tagPrefix, tagNamespaceURI, aOriginalElement);
|
|
}
|
|
|
|
// Now serialize each of the attributes
|
|
// XXX Unfortunately we need a namespace manager to get
|
|
// attribute URIs.
|
|
for (index = 0; index < count; index++) {
|
|
if (skipAttr == index) {
|
|
continue;
|
|
}
|
|
|
|
const nsAttrName* name = content->GetAttrNameAt(index);
|
|
PRInt32 namespaceID = name->NamespaceID();
|
|
nsIAtom* attrName = name->LocalName();
|
|
nsIAtom* attrPrefix = name->GetPrefix();
|
|
|
|
if (attrPrefix) {
|
|
attrPrefix->ToString(prefixStr);
|
|
}
|
|
else {
|
|
prefixStr.Truncate();
|
|
}
|
|
|
|
addNSAttr = PR_FALSE;
|
|
if (kNameSpaceID_XMLNS != namespaceID) {
|
|
nsContentUtils::NameSpaceManager()->GetNameSpaceURI(namespaceID, uriStr);
|
|
addNSAttr = ConfirmPrefix(prefixStr, uriStr, aOriginalElement, PR_TRUE);
|
|
}
|
|
|
|
content->GetAttr(namespaceID, attrName, valueStr);
|
|
attrName->ToString(nameStr);
|
|
|
|
// XXX Hack to get around the fact that MathML can add
|
|
// attributes starting with '-', which makes them
|
|
// invalid XML.
|
|
if (!nameStr.IsEmpty() && nameStr.First() == '-')
|
|
continue;
|
|
|
|
if (namespaceID == kNameSpaceID_None) {
|
|
if (content->GetNameSpaceID() == kNameSpaceID_XHTML) {
|
|
if (IsShorthandAttr(attrName, content->Tag()) &&
|
|
valueStr.IsEmpty()) {
|
|
valueStr = nameStr;
|
|
}
|
|
}
|
|
}
|
|
SerializeAttr(prefixStr, nameStr, valueStr, aStr, PR_TRUE);
|
|
|
|
if (addNSAttr) {
|
|
NS_ASSERTION(!prefixStr.IsEmpty(),
|
|
"Namespaced attributes must have a prefix");
|
|
SerializeAttr(xmlnsStr, prefixStr, uriStr, aStr, PR_TRUE);
|
|
PushNameSpaceDecl(prefixStr, uriStr, aOriginalElement);
|
|
}
|
|
}
|
|
|
|
// We don't output a separate end tag for empty element
|
|
PRBool hasChildren;
|
|
if (NS_FAILED(aOriginalElement->HasChildNodes(&hasChildren)) ||
|
|
!hasChildren) {
|
|
AppendToString(NS_LITERAL_STRING("/>"), aStr);
|
|
MaybeFlagNewline(aElement);
|
|
} else {
|
|
AppendToString(NS_LITERAL_STRING(">"), aStr);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsXMLContentSerializer::AppendElementEnd(nsIDOMElement *aElement,
|
|
nsAString& aStr)
|
|
{
|
|
NS_ENSURE_ARG(aElement);
|
|
|
|
// We don't output a separate end tag for empty element
|
|
nsCOMPtr<nsIDOMNode> node(do_QueryInterface(aElement));
|
|
PRBool hasChildren;
|
|
if (NS_SUCCEEDED(node->HasChildNodes(&hasChildren)) && !hasChildren) {
|
|
PopNameSpaceDeclsFor(aElement);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content(do_QueryInterface(aElement));
|
|
if (!content) return NS_ERROR_FAILURE;
|
|
|
|
nsAutoString tagPrefix, tagLocalName, tagNamespaceURI;
|
|
|
|
aElement->GetPrefix(tagPrefix);
|
|
aElement->GetLocalName(tagLocalName);
|
|
aElement->GetNamespaceURI(tagNamespaceURI);
|
|
|
|
#ifdef DEBUG
|
|
PRBool debugNeedToPushNamespace =
|
|
#endif
|
|
ConfirmPrefix(tagPrefix, tagNamespaceURI, aElement, PR_FALSE);
|
|
NS_ASSERTION(!debugNeedToPushNamespace, "Can't push namespaces in closing tag!");
|
|
|
|
AppendToString(NS_LITERAL_STRING("</"), aStr);
|
|
if (!tagPrefix.IsEmpty()) {
|
|
AppendToString(tagPrefix, aStr);
|
|
AppendToString(NS_LITERAL_STRING(":"), aStr);
|
|
}
|
|
AppendToString(tagLocalName, aStr);
|
|
AppendToString(NS_LITERAL_STRING(">"), aStr);
|
|
MaybeFlagNewline(aElement);
|
|
|
|
PopNameSpaceDeclsFor(aElement);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsXMLContentSerializer::AppendToString(const PRUnichar* aStr,
|
|
PRInt32 aLength,
|
|
nsAString& aOutputStr)
|
|
{
|
|
PRInt32 length = (aLength == -1) ? nsCRT::strlen(aStr) : aLength;
|
|
|
|
aOutputStr.Append(aStr, length);
|
|
}
|
|
|
|
void
|
|
nsXMLContentSerializer::AppendToString(const PRUnichar aChar,
|
|
nsAString& aOutputStr)
|
|
{
|
|
aOutputStr.Append(aChar);
|
|
}
|
|
|
|
static const PRUint16 kGTVal = 62;
|
|
static const char* kEntities[] = {
|
|
"", "", "", "", "", "", "", "", "", "",
|
|
"", "", "", "", "", "", "", "", "", "",
|
|
"", "", "", "", "", "", "", "", "", "",
|
|
"", "", "", "", "", "", "", "", "&", "",
|
|
"", "", "", "", "", "", "", "", "", "",
|
|
"", "", "", "", "", "", "", "", "", "",
|
|
"<", "", ">"
|
|
};
|
|
|
|
static const char* kAttrEntities[] = {
|
|
"", "", "", "", "", "", "", "", "", "",
|
|
"", "", "", "", "", "", "", "", "", "",
|
|
"", "", "", "", "", "", "", "", "", "",
|
|
"", "", "", "", """, "", "", "", "&", "",
|
|
"", "", "", "", "", "", "", "", "", "",
|
|
"", "", "", "", "", "", "", "", "", "",
|
|
"<", "", ">"
|
|
};
|
|
|
|
void
|
|
nsXMLContentSerializer::AppendToString(const nsAString& aStr,
|
|
nsAString& aOutputStr,
|
|
PRBool aTranslateEntities,
|
|
PRBool aIncrColumn)
|
|
{
|
|
if (aTranslateEntities) {
|
|
nsReadingIterator<PRUnichar> done_reading;
|
|
aStr.EndReading(done_reading);
|
|
|
|
// for each chunk of |aString|...
|
|
PRUint32 advanceLength = 0;
|
|
nsReadingIterator<PRUnichar> iter;
|
|
|
|
const char **entityTable = mInAttribute ? kAttrEntities : kEntities;
|
|
|
|
for (aStr.BeginReading(iter);
|
|
iter != done_reading;
|
|
iter.advance(PRInt32(advanceLength))) {
|
|
PRUint32 fragmentLength = iter.size_forward();
|
|
const PRUnichar* c = iter.get();
|
|
const PRUnichar* fragmentStart = c;
|
|
const PRUnichar* fragmentEnd = c + fragmentLength;
|
|
const char* entityText = nsnull;
|
|
|
|
advanceLength = 0;
|
|
// for each character in this chunk, check if it
|
|
// needs to be replaced
|
|
for (; c < fragmentEnd; c++, advanceLength++) {
|
|
PRUnichar val = *c;
|
|
if ((val <= kGTVal) && (entityTable[val][0] != 0)) {
|
|
entityText = entityTable[val];
|
|
break;
|
|
}
|
|
}
|
|
|
|
aOutputStr.Append(fragmentStart, advanceLength);
|
|
if (entityText) {
|
|
AppendASCIItoUTF16(entityText, aOutputStr);
|
|
advanceLength++;
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
aOutputStr.Append(aStr);
|
|
}
|
|
|
|
PRBool
|
|
nsXMLContentSerializer::IsShorthandAttr(const nsIAtom* aAttrName,
|
|
const nsIAtom* aElementName)
|
|
{
|
|
// checked
|
|
if ((aAttrName == nsGkAtoms::checked) &&
|
|
(aElementName == nsGkAtoms::input)) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// compact
|
|
if ((aAttrName == nsGkAtoms::compact) &&
|
|
(aElementName == nsGkAtoms::dir ||
|
|
aElementName == nsGkAtoms::dl ||
|
|
aElementName == nsGkAtoms::menu ||
|
|
aElementName == nsGkAtoms::ol ||
|
|
aElementName == nsGkAtoms::ul)) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// declare
|
|
if ((aAttrName == nsGkAtoms::declare) &&
|
|
(aElementName == nsGkAtoms::object)) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// defer
|
|
if ((aAttrName == nsGkAtoms::defer) &&
|
|
(aElementName == nsGkAtoms::script)) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// disabled
|
|
if ((aAttrName == nsGkAtoms::disabled) &&
|
|
(aElementName == nsGkAtoms::button ||
|
|
aElementName == nsGkAtoms::input ||
|
|
aElementName == nsGkAtoms::optgroup ||
|
|
aElementName == nsGkAtoms::option ||
|
|
aElementName == nsGkAtoms::select ||
|
|
aElementName == nsGkAtoms::textarea)) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// ismap
|
|
if ((aAttrName == nsGkAtoms::ismap) &&
|
|
(aElementName == nsGkAtoms::img ||
|
|
aElementName == nsGkAtoms::input)) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// multiple
|
|
if ((aAttrName == nsGkAtoms::multiple) &&
|
|
(aElementName == nsGkAtoms::select)) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// noresize
|
|
if ((aAttrName == nsGkAtoms::noresize) &&
|
|
(aElementName == nsGkAtoms::frame)) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// noshade
|
|
if ((aAttrName == nsGkAtoms::noshade) &&
|
|
(aElementName == nsGkAtoms::hr)) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// nowrap
|
|
if ((aAttrName == nsGkAtoms::nowrap) &&
|
|
(aElementName == nsGkAtoms::td ||
|
|
aElementName == nsGkAtoms::th)) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// readonly
|
|
if ((aAttrName == nsGkAtoms::readonly) &&
|
|
(aElementName == nsGkAtoms::input ||
|
|
aElementName == nsGkAtoms::textarea)) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// selected
|
|
if ((aAttrName == nsGkAtoms::selected) &&
|
|
(aElementName == nsGkAtoms::option)) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
return PR_FALSE;
|
|
}
|
|
|
|
void
|
|
nsXMLContentSerializer::MaybeAddNewline(nsAString& aStr)
|
|
{
|
|
if (mAddNewline) {
|
|
aStr.Append(mLineBreak);
|
|
mAddNewline = PR_FALSE;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsXMLContentSerializer::MaybeFlagNewline(nsIDOMNode* aNode)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> parent;
|
|
aNode->GetParentNode(getter_AddRefs(parent));
|
|
if (parent) {
|
|
PRUint16 type;
|
|
parent->GetNodeType(&type);
|
|
mAddNewline = type == nsIDOMNode::DOCUMENT_NODE;
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsXMLContentSerializer::AppendDocumentStart(nsIDOMDocument *aDocument,
|
|
nsAString& aStr)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aDocument);
|
|
|
|
nsCOMPtr<nsIDocument> doc(do_QueryInterface(aDocument));
|
|
if (!doc) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsAutoString version, encoding, standalone;
|
|
doc->GetXMLDeclaration(version, encoding, standalone);
|
|
|
|
if (version.IsEmpty())
|
|
return NS_OK; // A declaration must have version, or there is no decl
|
|
|
|
NS_NAMED_LITERAL_STRING(endQuote, "\"");
|
|
|
|
aStr += NS_LITERAL_STRING("<?xml version=\"") + version + endQuote;
|
|
|
|
if (!mCharset.IsEmpty()) {
|
|
aStr += NS_LITERAL_STRING(" encoding=\"") +
|
|
NS_ConvertASCIItoUTF16(mCharset) + endQuote;
|
|
}
|
|
// Otherwise just don't output an encoding attr. Not that we expect
|
|
// mCharset to ever be empty.
|
|
#ifdef DEBUG
|
|
else {
|
|
NS_WARNING("Empty mCharset? How come?");
|
|
}
|
|
#endif
|
|
|
|
if (!standalone.IsEmpty()) {
|
|
aStr += NS_LITERAL_STRING(" standalone=\"") + standalone + endQuote;
|
|
}
|
|
|
|
aStr.AppendLiteral("?>");
|
|
mAddNewline = PR_TRUE;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsXMLContentSerializer::AppendToStringConvertLF(const nsAString& aStr,
|
|
nsAString& aOutputStr)
|
|
{
|
|
// Convert line-endings to mLineBreak
|
|
PRUint32 start = 0;
|
|
PRUint32 theLen = aStr.Length();
|
|
while (start < theLen) {
|
|
PRInt32 eol = aStr.FindChar('\n', start);
|
|
if (eol == kNotFound) {
|
|
nsDependentSubstring dataSubstring(aStr, start, theLen - start);
|
|
AppendToString(dataSubstring, aOutputStr);
|
|
start = theLen;
|
|
}
|
|
else {
|
|
nsDependentSubstring dataSubstring(aStr, start, eol - start);
|
|
AppendToString(dataSubstring, aOutputStr);
|
|
AppendToString(mLineBreak, aOutputStr);
|
|
start = eol + 1;
|
|
if (start == theLen)
|
|
mColPos = 0;
|
|
}
|
|
}
|
|
}
|