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/*
* Copyright (C) 2000 Peter Kelly (pmk@post.com)
* Copyright (C) 2005, 2006, 2007 Apple Inc. All rights reserved.
* Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef XMLDocumentParser_h
#define XMLDocumentParser_h
#include "core/dom/ParserContentPolicy.h"
#include "core/dom/ScriptableDocumentParser.h"
#include "core/fetch/ResourceClient.h"
#include "core/fetch/ResourcePtr.h"
#include "core/xml/XMLErrors.h"
#include "platform/text/SegmentedString.h"
#include "wtf/HashMap.h"
#include "wtf/OwnPtr.h"
#include "wtf/text/CString.h"
#include "wtf/text/StringHash.h"
#include <libxml/tree.h>
namespace WebCore {
class ContainerNode;
class ScriptResource;
class ResourceFetcher;
class DocumentFragment;
class Document;
class Element;
class FrameView;
class Text;
class XMLParserContext : public RefCounted<XMLParserContext> {
public:
static PassRefPtr<XMLParserContext> createMemoryParser(xmlSAXHandlerPtr, void* userData, const CString& chunk);
static PassRefPtr<XMLParserContext> createStringParser(xmlSAXHandlerPtr, void* userData);
~XMLParserContext();
xmlParserCtxtPtr context() const { return m_context; }
private:
XMLParserContext(xmlParserCtxtPtr context)
: m_context(context)
{
}
xmlParserCtxtPtr m_context;
};
class XMLDocumentParser : public ScriptableDocumentParser, public ResourceClient {
WTF_MAKE_FAST_ALLOCATED;
public:
static PassRefPtr<XMLDocumentParser> create(Document* document, FrameView* view)
{
return adoptRef(new XMLDocumentParser(document, view));
}
static PassRefPtr<XMLDocumentParser> create(DocumentFragment* fragment, Element* element, ParserContentPolicy parserContentPolicy)
{
return adoptRef(new XMLDocumentParser(fragment, element, parserContentPolicy));
}
~XMLDocumentParser();
// Exposed for callbacks:
void handleError(XMLErrors::ErrorType, const char* message, TextPosition);
void setIsXHTMLDocument(bool isXHTML) { m_isXHTMLDocument = isXHTML; }
bool isXHTMLDocument() const { return m_isXHTMLDocument; }
bool isCurrentlyParsing8BitChunk() { return m_isCurrentlyParsing8BitChunk; }
static bool parseDocumentFragment(const String&, DocumentFragment*, Element* parent = 0, ParserContentPolicy = AllowScriptingContent);
// Used by the XMLHttpRequest to check if the responseXML was well formed.
virtual bool wellFormed() const { return !m_sawError; }
TextPosition textPosition() const;
static bool supportsXMLVersion(const String&);
class PendingCallback {
public:
virtual ~PendingCallback() { }
virtual void call(XMLDocumentParser*) = 0;
};
private:
XMLDocumentParser(Document*, FrameView* = 0);
XMLDocumentParser(DocumentFragment*, Element*, ParserContentPolicy);
// From DocumentParser
virtual void insert(const SegmentedString&);
virtual void append(PassRefPtr<StringImpl>);
virtual void finish();
virtual bool isWaitingForScripts() const;
virtual void stopParsing();
virtual void detach();
virtual OrdinalNumber lineNumber() const;
OrdinalNumber columnNumber() const;
// from ResourceClient
virtual void notifyFinished(Resource*);
void end();
void pauseParsing();
void resumeParsing();
bool appendFragmentSource(const String&);
public:
// callbacks from parser SAX
void error(XMLErrors::ErrorType, const char* message, va_list args) WTF_ATTRIBUTE_PRINTF(3, 0);
void startElementNs(const AtomicString& localName, const AtomicString& prefix, const AtomicString& uri, int nb_namespaces,
const xmlChar** namespaces, int nb_attributes, int nb_defaulted, const xmlChar** libxmlAttributes);
void endElementNs();
void characters(const xmlChar* chars, int length);
void processingInstruction(const String& target, const String& data);
void cdataBlock(const String&);
void comment(const String&);
void startDocument(const String& version, const String& encoding, int standalone);
void internalSubset(const String& name, const String& externalID, const String& systemID);
void endDocument();
private:
void initializeParserContext(const CString& chunk = CString());
void pushCurrentNode(ContainerNode*);
void popCurrentNode();
void clearCurrentNodeStack();
void insertErrorMessageBlock();
void enterText();
void exitText();
void doWrite(const String&);
void doEnd();
FrameView* m_view;
SegmentedString m_originalSourceForTransform;
xmlParserCtxtPtr context() const { return m_context ? m_context->context() : 0; };
RefPtr<XMLParserContext> m_context;
Deque<OwnPtr<PendingCallback> > m_pendingCallbacks;
Vector<xmlChar> m_bufferedText;
ContainerNode* m_currentNode;
Vector<ContainerNode*> m_currentNodeStack;
RefPtr<Text> m_leafTextNode;
bool m_isCurrentlyParsing8BitChunk;
bool m_sawError;
bool m_sawCSS;
bool m_sawXSLTransform;
bool m_sawFirstElement;
bool m_isXHTMLDocument;
bool m_parserPaused;
bool m_requestingScript;
bool m_finishCalled;
XMLErrors m_xmlErrors;
ResourcePtr<ScriptResource> m_pendingScript;
RefPtr<Element> m_scriptElement;
TextPosition m_scriptStartPosition;
bool m_parsingFragment;
AtomicString m_defaultNamespaceURI;
typedef HashMap<AtomicString, AtomicString> PrefixForNamespaceMap;
PrefixForNamespaceMap m_prefixToNamespaceMap;
SegmentedString m_pendingSrc;
};
xmlDocPtr xmlDocPtrForString(ResourceFetcher*, const String& source, const String& url);
HashMap<String, String> parseAttributes(const String&, bool& attrsOK);
} // namespace WebCore
#endif // XMLDocumentParser_h
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