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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 "CachedResourceClient.h"
#include "CachedResourceHandle.h"
#include "FragmentScriptingPermission.h"
#include "ScriptableDocumentParser.h"
#include "SegmentedString.h"
#include "XMLErrors.h"
#include <wtf/HashMap.h>
#include <wtf/text/AtomicStringHash.h>
#include <wtf/text/CString.h>
#include <libxml/tree.h>
#include <libxml/xmlstring.h>
namespace WebCore {
class ContainerNode;
class CachedScript;
class CachedResourceLoader;
class DocumentFragment;
class Document;
class Element;
class FrameView;
class PendingCallbacks;
class Text;
class XMLParserContext : public RefCounted<XMLParserContext> {
public:
static RefPtr<XMLParserContext> createMemoryParser(xmlSAXHandlerPtr, void* userData, const CString& chunk);
static Ref<XMLParserContext> createStringParser(xmlSAXHandlerPtr, void* userData);
~XMLParserContext();
xmlParserCtxtPtr context() const { return m_context; }
private:
XMLParserContext(xmlParserCtxtPtr context)
: m_context(context)
{
}
xmlParserCtxtPtr m_context;
};
class XMLDocumentParser final : public ScriptableDocumentParser, public CachedResourceClient {
WTF_MAKE_FAST_ALLOCATED;
public:
static Ref<XMLDocumentParser> create(Document& document, FrameView* view)
{
return adoptRef(*new XMLDocumentParser(document, view));
}
static Ref<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; }
static bool parseDocumentFragment(const String&, DocumentFragment&, Element* parent = nullptr, ParserContentPolicy = AllowScriptingContent);
// Used by the XMLHttpRequest to check if the responseXML was well formed.
virtual bool wellFormed() const override { return !m_sawError; }
static bool supportsXMLVersion(const String&);
private:
XMLDocumentParser(Document&, FrameView* = nullptr);
XMLDocumentParser(DocumentFragment&, Element*, ParserContentPolicy);
// From DocumentParser
virtual void insert(const SegmentedString&) override;
virtual void append(RefPtr<StringImpl>&&) override;
virtual void finish() override;
virtual bool isWaitingForScripts() const override;
virtual void stopParsing() override;
virtual void detach() override;
virtual TextPosition textPosition() const override;
virtual bool shouldAssociateConsoleMessagesWithTextPosition() const override;
// from CachedResourceClient
virtual void notifyFinished(CachedResource*) override;
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 xmlChar* xmlLocalName, const xmlChar* xmlPrefix, const xmlChar* xmlURI, int nb_namespaces,
const xmlChar** namespaces, int nb_attributes, int nb_defaulted, const xmlChar** libxmlAttributes);
void endElementNs();
void characters(const xmlChar* s, int len);
void processingInstruction(const xmlChar* target, const xmlChar* data);
void cdataBlock(const xmlChar* s, int len);
void comment(const xmlChar* s);
void startDocument(const xmlChar* version, const xmlChar* encoding, int standalone);
void internalSubset(const xmlChar* name, const xmlChar* externalID, const xmlChar* systemID);
void endDocument();
bool isParsingEntityDeclaration() const { return m_isParsingEntityDeclaration; }
void setIsParsingEntityDeclaration(bool value) { m_isParsingEntityDeclaration = value; }
int depthTriggeringEntityExpansion() const { return m_depthTriggeringEntityExpansion; }
void setDepthTriggeringEntityExpansion(int depth) { m_depthTriggeringEntityExpansion = depth; }
private:
void initializeParserContext(const CString& chunk = CString());
void pushCurrentNode(ContainerNode*);
void popCurrentNode();
void clearCurrentNodeStack();
void insertErrorMessageBlock();
void createLeafTextNode();
bool updateLeafTextNode();
void doWrite(const String&);
void doEnd();
FrameView* m_view;
SegmentedString m_originalSourceForTransform;
xmlParserCtxtPtr context() const { return m_context ? m_context->context() : nullptr; };
RefPtr<XMLParserContext> m_context;
std::unique_ptr<PendingCallbacks> m_pendingCallbacks;
Vector<xmlChar> m_bufferedText;
int m_depthTriggeringEntityExpansion;
bool m_isParsingEntityDeclaration;
ContainerNode* m_currentNode;
Vector<ContainerNode*> m_currentNodeStack;
RefPtr<Text> m_leafTextNode;
bool m_sawError;
bool m_sawCSS;
bool m_sawXSLTransform;
bool m_sawFirstElement;
bool m_isXHTMLDocument;
bool m_parserPaused;
bool m_requestingScript;
bool m_finishCalled;
std::unique_ptr<XMLErrors> m_xmlErrors;
CachedResourceHandle<CachedScript> 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;
};
#if ENABLE(XSLT)
void* xmlDocPtrForString(CachedResourceLoader&, const String& source, const String& url);
#endif
HashMap<String, String> parseAttributes(const String&, bool& attrsOK);
} // namespace WebCore
#endif // XMLDocumentParser_h
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