| Index: third_party/WebKit/WebCore/dom/XMLTokenizerLibxml2.cpp
|
| ===================================================================
|
| --- third_party/WebKit/WebCore/dom/XMLTokenizerLibxml2.cpp (revision 9383)
|
| +++ third_party/WebKit/WebCore/dom/XMLTokenizerLibxml2.cpp (working copy)
|
| @@ -1,1365 +1,1361 @@
|
| -/*
|
| - * Copyright (C) 2000 Peter Kelly (pmk@post.com)
|
| - * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
|
| - * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
|
| - * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
|
| - * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
|
| - * Copyright (C) 2008 Holger Hans Peter Freyther
|
| - * Copyright (C) 2008 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.
|
| - */
|
| -
|
| -#include "config.h"
|
| -#include "XMLTokenizer.h"
|
| -
|
| -#include "CDATASection.h"
|
| -#include "CString.h"
|
| -#include "CachedScript.h"
|
| -#include "Comment.h"
|
| -#include "DocLoader.h"
|
| -#include "Document.h"
|
| -#include "DocumentFragment.h"
|
| -#include "DocumentType.h"
|
| -#include "Frame.h"
|
| -#include "FrameLoader.h"
|
| -#include "FrameView.h"
|
| -#include "HTMLLinkElement.h"
|
| -#include "HTMLStyleElement.h"
|
| -#include "HTMLTokenizer.h" // for decodeNamedEntity
|
| -#include "ProcessingInstruction.h"
|
| -#include "ResourceError.h"
|
| -#include "ResourceHandle.h"
|
| -#include "ResourceRequest.h"
|
| -#include "ResourceResponse.h"
|
| -#include "ScriptController.h"
|
| -#include "ScriptElement.h"
|
| -#include "ScriptSourceCode.h"
|
| -#include "ScriptValue.h"
|
| -#include "TextResourceDecoder.h"
|
| -#include <libxml/parser.h>
|
| -#include <libxml/parserInternals.h>
|
| -#include <wtf/Platform.h>
|
| -#include <wtf/StringExtras.h>
|
| -#include <wtf/Threading.h>
|
| -#include <wtf/UnusedParam.h>
|
| -#include <wtf/Vector.h>
|
| -
|
| -#if ENABLE(XSLT)
|
| -#include <libxslt/xslt.h>
|
| -#endif
|
| -
|
| -using namespace std;
|
| -
|
| -namespace WebCore {
|
| -
|
| -class PendingCallbacks : Noncopyable {
|
| -public:
|
| - ~PendingCallbacks()
|
| - {
|
| - deleteAllValues(m_callbacks);
|
| - }
|
| -
|
| - void appendStartElementNSCallback(const xmlChar* xmlLocalName, const xmlChar* xmlPrefix, const xmlChar* xmlURI, int nb_namespaces,
|
| - const xmlChar** namespaces, int nb_attributes, int nb_defaulted, const xmlChar** attributes)
|
| - {
|
| - PendingStartElementNSCallback* callback = new PendingStartElementNSCallback;
|
| -
|
| - callback->xmlLocalName = xmlStrdup(xmlLocalName);
|
| - callback->xmlPrefix = xmlStrdup(xmlPrefix);
|
| - callback->xmlURI = xmlStrdup(xmlURI);
|
| - callback->nb_namespaces = nb_namespaces;
|
| - callback->namespaces = static_cast<xmlChar**>(xmlMalloc(sizeof(xmlChar*) * nb_namespaces * 2));
|
| - for (int i = 0; i < nb_namespaces * 2 ; i++)
|
| - callback->namespaces[i] = xmlStrdup(namespaces[i]);
|
| - callback->nb_attributes = nb_attributes;
|
| - callback->nb_defaulted = nb_defaulted;
|
| - callback->attributes = static_cast<xmlChar**>(xmlMalloc(sizeof(xmlChar*) * nb_attributes * 5));
|
| - for (int i = 0; i < nb_attributes; i++) {
|
| - // Each attribute has 5 elements in the array:
|
| - // name, prefix, uri, value and an end pointer.
|
| -
|
| - for (int j = 0; j < 3; j++)
|
| - callback->attributes[i * 5 + j] = xmlStrdup(attributes[i * 5 + j]);
|
| -
|
| - int len = attributes[i * 5 + 4] - attributes[i * 5 + 3];
|
| -
|
| - callback->attributes[i * 5 + 3] = xmlStrndup(attributes[i * 5 + 3], len);
|
| - callback->attributes[i * 5 + 4] = callback->attributes[i * 5 + 3] + len;
|
| - }
|
| -
|
| - m_callbacks.append(callback);
|
| - }
|
| -
|
| - void appendEndElementNSCallback()
|
| - {
|
| - PendingEndElementNSCallback* callback = new PendingEndElementNSCallback;
|
| -
|
| - m_callbacks.append(callback);
|
| - }
|
| -
|
| - void appendCharactersCallback(const xmlChar* s, int len)
|
| - {
|
| - PendingCharactersCallback* callback = new PendingCharactersCallback;
|
| -
|
| - callback->s = xmlStrndup(s, len);
|
| - callback->len = len;
|
| -
|
| - m_callbacks.append(callback);
|
| - }
|
| -
|
| - void appendProcessingInstructionCallback(const xmlChar* target, const xmlChar* data)
|
| - {
|
| - PendingProcessingInstructionCallback* callback = new PendingProcessingInstructionCallback;
|
| -
|
| - callback->target = xmlStrdup(target);
|
| - callback->data = xmlStrdup(data);
|
| -
|
| - m_callbacks.append(callback);
|
| - }
|
| -
|
| - void appendCDATABlockCallback(const xmlChar* s, int len)
|
| - {
|
| - PendingCDATABlockCallback* callback = new PendingCDATABlockCallback;
|
| -
|
| - callback->s = xmlStrndup(s, len);
|
| - callback->len = len;
|
| -
|
| - m_callbacks.append(callback);
|
| - }
|
| -
|
| - void appendCommentCallback(const xmlChar* s)
|
| - {
|
| - PendingCommentCallback* callback = new PendingCommentCallback;
|
| -
|
| - callback->s = xmlStrdup(s);
|
| -
|
| - m_callbacks.append(callback);
|
| - }
|
| -
|
| - void appendInternalSubsetCallback(const xmlChar* name, const xmlChar* externalID, const xmlChar* systemID)
|
| - {
|
| - PendingInternalSubsetCallback* callback = new PendingInternalSubsetCallback;
|
| -
|
| - callback->name = xmlStrdup(name);
|
| - callback->externalID = xmlStrdup(externalID);
|
| - callback->systemID = xmlStrdup(systemID);
|
| -
|
| - m_callbacks.append(callback);
|
| - }
|
| -
|
| - void appendErrorCallback(XMLTokenizer::ErrorType type, const char* message, int lineNumber, int columnNumber)
|
| - {
|
| - PendingErrorCallback* callback = new PendingErrorCallback;
|
| -
|
| - callback->message = strdup(message);
|
| - callback->type = type;
|
| - callback->lineNumber = lineNumber;
|
| - callback->columnNumber = columnNumber;
|
| -
|
| - m_callbacks.append(callback);
|
| - }
|
| -
|
| - void callAndRemoveFirstCallback(XMLTokenizer* tokenizer)
|
| - {
|
| - OwnPtr<PendingCallback> callback(m_callbacks.first());
|
| - m_callbacks.removeFirst();
|
| - callback->call(tokenizer);
|
| - }
|
| -
|
| - bool isEmpty() const { return m_callbacks.isEmpty(); }
|
| -
|
| -private:
|
| - struct PendingCallback {
|
| - virtual ~PendingCallback() { }
|
| - virtual void call(XMLTokenizer* tokenizer) = 0;
|
| - };
|
| -
|
| - struct PendingStartElementNSCallback : public PendingCallback {
|
| - virtual ~PendingStartElementNSCallback() {
|
| - xmlFree(xmlLocalName);
|
| - xmlFree(xmlPrefix);
|
| - xmlFree(xmlURI);
|
| - for (int i = 0; i < nb_namespaces * 2; i++)
|
| - xmlFree(namespaces[i]);
|
| - xmlFree(namespaces);
|
| - for (int i = 0; i < nb_attributes; i++)
|
| - for (int j = 0; j < 4; j++)
|
| - xmlFree(attributes[i * 5 + j]);
|
| - xmlFree(attributes);
|
| - }
|
| -
|
| - virtual void call(XMLTokenizer* tokenizer) {
|
| - tokenizer->startElementNs(xmlLocalName, xmlPrefix, xmlURI,
|
| - nb_namespaces, const_cast<const xmlChar**>(namespaces),
|
| - nb_attributes, nb_defaulted, const_cast<const xmlChar**>(attributes));
|
| - }
|
| -
|
| - xmlChar* xmlLocalName;
|
| - xmlChar* xmlPrefix;
|
| - xmlChar* xmlURI;
|
| - int nb_namespaces;
|
| - xmlChar** namespaces;
|
| - int nb_attributes;
|
| - int nb_defaulted;
|
| - xmlChar** attributes;
|
| - };
|
| -
|
| - struct PendingEndElementNSCallback : public PendingCallback {
|
| - virtual void call(XMLTokenizer* tokenizer)
|
| - {
|
| - tokenizer->endElementNs();
|
| - }
|
| - };
|
| -
|
| - struct PendingCharactersCallback : public PendingCallback {
|
| - virtual ~PendingCharactersCallback()
|
| - {
|
| - xmlFree(s);
|
| - }
|
| -
|
| - virtual void call(XMLTokenizer* tokenizer)
|
| - {
|
| - tokenizer->characters(s, len);
|
| - }
|
| -
|
| - xmlChar* s;
|
| - int len;
|
| - };
|
| -
|
| - struct PendingProcessingInstructionCallback : public PendingCallback {
|
| - virtual ~PendingProcessingInstructionCallback()
|
| - {
|
| - xmlFree(target);
|
| - xmlFree(data);
|
| - }
|
| -
|
| - virtual void call(XMLTokenizer* tokenizer)
|
| - {
|
| - tokenizer->processingInstruction(target, data);
|
| - }
|
| -
|
| - xmlChar* target;
|
| - xmlChar* data;
|
| - };
|
| -
|
| - struct PendingCDATABlockCallback : public PendingCallback {
|
| - virtual ~PendingCDATABlockCallback()
|
| - {
|
| - xmlFree(s);
|
| - }
|
| -
|
| - virtual void call(XMLTokenizer* tokenizer)
|
| - {
|
| - tokenizer->cdataBlock(s, len);
|
| - }
|
| -
|
| - xmlChar* s;
|
| - int len;
|
| - };
|
| -
|
| - struct PendingCommentCallback : public PendingCallback {
|
| - virtual ~PendingCommentCallback()
|
| - {
|
| - xmlFree(s);
|
| - }
|
| -
|
| - virtual void call(XMLTokenizer* tokenizer)
|
| - {
|
| - tokenizer->comment(s);
|
| - }
|
| -
|
| - xmlChar* s;
|
| - };
|
| -
|
| - struct PendingInternalSubsetCallback : public PendingCallback {
|
| - virtual ~PendingInternalSubsetCallback()
|
| - {
|
| - xmlFree(name);
|
| - xmlFree(externalID);
|
| - xmlFree(systemID);
|
| - }
|
| -
|
| - virtual void call(XMLTokenizer* tokenizer)
|
| - {
|
| - tokenizer->internalSubset(name, externalID, systemID);
|
| - }
|
| -
|
| - xmlChar* name;
|
| - xmlChar* externalID;
|
| - xmlChar* systemID;
|
| - };
|
| -
|
| - struct PendingErrorCallback: public PendingCallback {
|
| - virtual ~PendingErrorCallback()
|
| - {
|
| - free (message);
|
| - }
|
| -
|
| - virtual void call(XMLTokenizer* tokenizer)
|
| - {
|
| - tokenizer->handleError(type, message, lineNumber, columnNumber);
|
| - }
|
| -
|
| - XMLTokenizer::ErrorType type;
|
| - char* message;
|
| - int lineNumber;
|
| - int columnNumber;
|
| - };
|
| -
|
| - Deque<PendingCallback*> m_callbacks;
|
| -};
|
| -// --------------------------------
|
| -
|
| -static int globalDescriptor = 0;
|
| -static DocLoader* globalDocLoader = 0;
|
| -static ThreadIdentifier libxmlLoaderThread = 0;
|
| -
|
| -static int matchFunc(const char*)
|
| -{
|
| - // Only match loads initiated due to uses of libxml2 from within XMLTokenizer to avoid
|
| - // interfering with client applications that also use libxml2. http://bugs.webkit.org/show_bug.cgi?id=17353
|
| - return globalDocLoader && currentThread() == libxmlLoaderThread;
|
| -}
|
| -
|
| -class OffsetBuffer {
|
| -public:
|
| - OffsetBuffer(const Vector<char>& b) : m_buffer(b), m_currentOffset(0) { }
|
| -
|
| - int readOutBytes(char* outputBuffer, unsigned askedToRead) {
|
| - unsigned bytesLeft = m_buffer.size() - m_currentOffset;
|
| - unsigned lenToCopy = min(askedToRead, bytesLeft);
|
| - if (lenToCopy) {
|
| - memcpy(outputBuffer, m_buffer.data() + m_currentOffset, lenToCopy);
|
| - m_currentOffset += lenToCopy;
|
| - }
|
| - return lenToCopy;
|
| - }
|
| -
|
| -private:
|
| - Vector<char> m_buffer;
|
| - unsigned m_currentOffset;
|
| -};
|
| -
|
| -static bool shouldAllowExternalLoad(const KURL& url)
|
| -{
|
| - String urlString = url.string();
|
| -
|
| - // On non-Windows platforms libxml asks for this URL, the
|
| - // "XML_XML_DEFAULT_CATALOG", on initialization.
|
| - if (urlString == "file:///etc/xml/catalog")
|
| - return false;
|
| -
|
| - // On Windows, libxml computes a URL relative to where its DLL resides.
|
| - if (urlString.startsWith("file:///", false) && urlString.endsWith("/etc/catalog", false))
|
| - return false;
|
| -
|
| - // The most common DTD. There isn't much point in hammering www.w3c.org
|
| - // by requesting this URL for every XHTML document.
|
| - if (urlString.startsWith("http://www.w3.org/TR/xhtml", false))
|
| - return false;
|
| -
|
| - // Similarly, there isn't much point in requesting the SVG DTD.
|
| - if (urlString.startsWith("http://www.w3.org/Graphics/SVG", false))
|
| - return false;
|
| -
|
| - // The libxml doesn't give us a lot of context for deciding whether to
|
| - // allow this request. In the worst case, this load could be for an
|
| - // external entity and the resulting document could simply read the
|
| - // retrieved content. If we had more context, we could potentially allow
|
| - // the parser to load a DTD. As things stand, we take the conservative
|
| - // route and allow same-origin requests only.
|
| - if (!globalDocLoader->doc()->securityOrigin()->canRequest(url)) {
|
| - globalDocLoader->printAccessDeniedMessage(url);
|
| - return false;
|
| - }
|
| -
|
| - return true;
|
| -}
|
| -
|
| -static void* openFunc(const char* uri)
|
| -{
|
| - ASSERT(globalDocLoader);
|
| - ASSERT(currentThread() == libxmlLoaderThread);
|
| -
|
| - KURL url(uri);
|
| -
|
| - if (!shouldAllowExternalLoad(url))
|
| - return &globalDescriptor;
|
| -
|
| - ResourceError error;
|
| - ResourceResponse response;
|
| - Vector<char> data;
|
| -
|
| - DocLoader* docLoader = globalDocLoader;
|
| - globalDocLoader = 0;
|
| - // FIXME: We should restore the original global error handler as well.
|
| -
|
| - if (docLoader->frame())
|
| - docLoader->frame()->loader()->loadResourceSynchronously(url, error, response, data);
|
| -
|
| - globalDocLoader = docLoader;
|
| -
|
| - // We have to check the URL again after the load to catch redirects.
|
| - // See <https://bugs.webkit.org/show_bug.cgi?id=21963>.
|
| - if (!shouldAllowExternalLoad(response.url()))
|
| - return &globalDescriptor;
|
| -
|
| - return new OffsetBuffer(data);
|
| -}
|
| -
|
| -static int readFunc(void* context, char* buffer, int len)
|
| -{
|
| - // Do 0-byte reads in case of a null descriptor
|
| - if (context == &globalDescriptor)
|
| - return 0;
|
| -
|
| - OffsetBuffer* data = static_cast<OffsetBuffer*>(context);
|
| - return data->readOutBytes(buffer, len);
|
| -}
|
| -
|
| -static int writeFunc(void*, const char*, int)
|
| -{
|
| - // Always just do 0-byte writes
|
| - return 0;
|
| -}
|
| -
|
| -static int closeFunc(void* context)
|
| -{
|
| - if (context != &globalDescriptor) {
|
| - OffsetBuffer* data = static_cast<OffsetBuffer*>(context);
|
| - delete data;
|
| - }
|
| - return 0;
|
| -}
|
| -
|
| -#if ENABLE(XSLT)
|
| -static void errorFunc(void*, const char*, ...)
|
| -{
|
| - // FIXME: It would be nice to display error messages somewhere.
|
| -}
|
| -#endif
|
| -
|
| -void setLoaderForLibXMLCallbacks(DocLoader* docLoader)
|
| -{
|
| - globalDocLoader = docLoader;
|
| -}
|
| -
|
| -static bool didInit = false;
|
| -
|
| -static xmlParserCtxtPtr createStringParser(xmlSAXHandlerPtr handlers, void* userData)
|
| -{
|
| - if (!didInit) {
|
| - xmlInitParser();
|
| - xmlRegisterInputCallbacks(matchFunc, openFunc, readFunc, closeFunc);
|
| - xmlRegisterOutputCallbacks(matchFunc, openFunc, writeFunc, closeFunc);
|
| - libxmlLoaderThread = currentThread();
|
| - didInit = true;
|
| - }
|
| -
|
| - xmlParserCtxtPtr parser = xmlCreatePushParserCtxt(handlers, 0, 0, 0, 0);
|
| - parser->_private = userData;
|
| - parser->replaceEntities = true;
|
| - const UChar BOM = 0xFEFF;
|
| - const unsigned char BOMHighByte = *reinterpret_cast<const unsigned char*>(&BOM);
|
| - xmlSwitchEncoding(parser, BOMHighByte == 0xFF ? XML_CHAR_ENCODING_UTF16LE : XML_CHAR_ENCODING_UTF16BE);
|
| -
|
| - return parser;
|
| -}
|
| -
|
| -
|
| -// Chunk should be encoded in UTF-8
|
| -static xmlParserCtxtPtr createMemoryParser(xmlSAXHandlerPtr handlers, void* userData, const char* chunk)
|
| -{
|
| - if (!didInit) {
|
| - xmlInitParser();
|
| - xmlRegisterInputCallbacks(matchFunc, openFunc, readFunc, closeFunc);
|
| - xmlRegisterOutputCallbacks(matchFunc, openFunc, writeFunc, closeFunc);
|
| - libxmlLoaderThread = currentThread();
|
| - didInit = true;
|
| - }
|
| -
|
| - xmlParserCtxtPtr parser = xmlCreateMemoryParserCtxt(chunk, xmlStrlen((const xmlChar*)chunk));
|
| -
|
| - if (!parser)
|
| - return 0;
|
| -
|
| - // Copy the sax handler
|
| - memcpy(parser->sax, handlers, sizeof(xmlSAXHandler));
|
| -
|
| - // Set parser options.
|
| - // XML_PARSE_NODICT: default dictionary option.
|
| - // XML_PARSE_NOENT: force entities substitutions.
|
| - xmlCtxtUseOptions(parser, XML_PARSE_NODICT | XML_PARSE_NOENT);
|
| -
|
| - // Internal initialization
|
| - parser->sax2 = 1;
|
| - parser->instate = XML_PARSER_CONTENT; // We are parsing a CONTENT
|
| - parser->depth = 0;
|
| - parser->str_xml = xmlDictLookup(parser->dict, BAD_CAST "xml", 3);
|
| - parser->str_xmlns = xmlDictLookup(parser->dict, BAD_CAST "xmlns", 5);
|
| - parser->str_xml_ns = xmlDictLookup(parser->dict, XML_XML_NAMESPACE, 36);
|
| - parser->_private = userData;
|
| -
|
| - return parser;
|
| -}
|
| -
|
| -// --------------------------------
|
| -
|
| -XMLTokenizer::XMLTokenizer(Document* _doc, FrameView* _view)
|
| - : m_doc(_doc)
|
| - , m_view(_view)
|
| - , m_context(0)
|
| - , m_pendingCallbacks(new PendingCallbacks)
|
| - , m_currentNode(_doc)
|
| - , m_currentNodeIsReferenced(false)
|
| - , m_sawError(false)
|
| - , m_sawXSLTransform(false)
|
| - , m_sawFirstElement(false)
|
| - , m_isXHTMLDocument(false)
|
| - , m_parserPaused(false)
|
| - , m_requestingScript(false)
|
| - , m_finishCalled(false)
|
| - , m_errorCount(0)
|
| - , m_lastErrorLine(0)
|
| - , m_lastErrorColumn(0)
|
| - , m_pendingScript(0)
|
| - , m_scriptStartLine(0)
|
| - , m_parsingFragment(false)
|
| -{
|
| -}
|
| -
|
| -XMLTokenizer::XMLTokenizer(DocumentFragment* fragment, Element* parentElement)
|
| - : m_doc(fragment->document())
|
| - , m_view(0)
|
| - , m_context(0)
|
| - , m_pendingCallbacks(new PendingCallbacks)
|
| - , m_currentNode(fragment)
|
| - , m_currentNodeIsReferenced(fragment)
|
| - , m_sawError(false)
|
| - , m_sawXSLTransform(false)
|
| - , m_sawFirstElement(false)
|
| - , m_isXHTMLDocument(false)
|
| - , m_parserPaused(false)
|
| - , m_requestingScript(false)
|
| - , m_finishCalled(false)
|
| - , m_errorCount(0)
|
| - , m_lastErrorLine(0)
|
| - , m_lastErrorColumn(0)
|
| - , m_pendingScript(0)
|
| - , m_scriptStartLine(0)
|
| - , m_parsingFragment(true)
|
| -{
|
| - if (fragment)
|
| - fragment->ref();
|
| - if (m_doc)
|
| - m_doc->ref();
|
| -
|
| - // Add namespaces based on the parent node
|
| - Vector<Element*> elemStack;
|
| - while (parentElement) {
|
| - elemStack.append(parentElement);
|
| -
|
| - Node* n = parentElement->parentNode();
|
| - if (!n || !n->isElementNode())
|
| - break;
|
| - parentElement = static_cast<Element*>(n);
|
| - }
|
| -
|
| - if (elemStack.isEmpty())
|
| - return;
|
| -
|
| - for (Element* element = elemStack.last(); !elemStack.isEmpty(); elemStack.removeLast()) {
|
| - if (NamedAttrMap* attrs = element->attributes()) {
|
| - for (unsigned i = 0; i < attrs->length(); i++) {
|
| - Attribute* attr = attrs->attributeItem(i);
|
| - if (attr->localName() == "xmlns")
|
| - m_defaultNamespaceURI = attr->value();
|
| - else if (attr->prefix() == "xmlns")
|
| - m_prefixToNamespaceMap.set(attr->localName(), attr->value());
|
| - }
|
| - }
|
| - }
|
| -
|
| - // If the parent element is not in document tree, there may be no xmlns attribute; just default to the parent's namespace.
|
| - if (m_defaultNamespaceURI.isNull() && !parentElement->inDocument())
|
| - m_defaultNamespaceURI = parentElement->namespaceURI();
|
| -}
|
| -
|
| -XMLTokenizer::~XMLTokenizer()
|
| -{
|
| - setCurrentNode(0);
|
| - if (m_parsingFragment && m_doc)
|
| - m_doc->deref();
|
| - if (m_pendingScript)
|
| - m_pendingScript->removeClient(this);
|
| - if (m_context)
|
| - xmlFreeParserCtxt(m_context);
|
| -}
|
| -
|
| -void XMLTokenizer::doWrite(const String& parseString)
|
| -{
|
| - if (!m_context)
|
| - initializeParserContext();
|
| -
|
| - // libXML throws an error if you try to switch the encoding for an empty string.
|
| - if (parseString.length()) {
|
| - // Hack around libxml2's lack of encoding overide support by manually
|
| - // resetting the encoding to UTF-16 before every chunk. Otherwise libxml
|
| - // will detect <?xml version="1.0" encoding="<encoding name>"?> blocks
|
| - // and switch encodings, causing the parse to fail.
|
| - const UChar BOM = 0xFEFF;
|
| - const unsigned char BOMHighByte = *reinterpret_cast<const unsigned char*>(&BOM);
|
| - xmlSwitchEncoding(m_context, BOMHighByte == 0xFF ? XML_CHAR_ENCODING_UTF16LE : XML_CHAR_ENCODING_UTF16BE);
|
| -
|
| - xmlParseChunk(m_context, reinterpret_cast<const char*>(parseString.characters()), sizeof(UChar) * parseString.length(), 0);
|
| - }
|
| -
|
| - if (m_doc->decoder() && m_doc->decoder()->sawError()) {
|
| - // If the decoder saw an error, report it as fatal (stops parsing)
|
| - handleError(fatal, "Encoding error", lineNumber(), columnNumber());
|
| - }
|
| -
|
| - return;
|
| -}
|
| -
|
| -static inline String toString(const xmlChar* str, unsigned len)
|
| -{
|
| - return UTF8Encoding().decode(reinterpret_cast<const char*>(str), len);
|
| -}
|
| -
|
| -static inline String toString(const xmlChar* str)
|
| -{
|
| - if (!str)
|
| - return String();
|
| -
|
| - return UTF8Encoding().decode(reinterpret_cast<const char*>(str), strlen(reinterpret_cast<const char*>(str)));
|
| -}
|
| -
|
| -struct _xmlSAX2Namespace {
|
| - const xmlChar* prefix;
|
| - const xmlChar* uri;
|
| -};
|
| -typedef struct _xmlSAX2Namespace xmlSAX2Namespace;
|
| -
|
| -static inline void handleElementNamespaces(Element* newElement, const xmlChar** libxmlNamespaces, int nb_namespaces, ExceptionCode& ec)
|
| -{
|
| - xmlSAX2Namespace* namespaces = reinterpret_cast<xmlSAX2Namespace*>(libxmlNamespaces);
|
| - for(int i = 0; i < nb_namespaces; i++) {
|
| - String namespaceQName = "xmlns";
|
| - String namespaceURI = toString(namespaces[i].uri);
|
| - if (namespaces[i].prefix)
|
| - namespaceQName = "xmlns:" + toString(namespaces[i].prefix);
|
| - newElement->setAttributeNS("http://www.w3.org/2000/xmlns/", namespaceQName, namespaceURI, ec);
|
| - if (ec) // exception setting attributes
|
| - return;
|
| - }
|
| -}
|
| -
|
| -struct _xmlSAX2Attributes {
|
| - const xmlChar* localname;
|
| - const xmlChar* prefix;
|
| - const xmlChar* uri;
|
| - const xmlChar* value;
|
| - const xmlChar* end;
|
| -};
|
| -typedef struct _xmlSAX2Attributes xmlSAX2Attributes;
|
| -
|
| -static inline void handleElementAttributes(Element* newElement, const xmlChar** libxmlAttributes, int nb_attributes, ExceptionCode& ec)
|
| -{
|
| - xmlSAX2Attributes* attributes = reinterpret_cast<xmlSAX2Attributes*>(libxmlAttributes);
|
| - for(int i = 0; i < nb_attributes; i++) {
|
| - String attrLocalName = toString(attributes[i].localname);
|
| - int valueLength = (int) (attributes[i].end - attributes[i].value);
|
| - String attrValue = toString(attributes[i].value, valueLength);
|
| - String attrPrefix = toString(attributes[i].prefix);
|
| - String attrURI = attrPrefix.isEmpty() ? String() : toString(attributes[i].uri);
|
| - String attrQName = attrPrefix.isEmpty() ? attrLocalName : attrPrefix + ":" + attrLocalName;
|
| -
|
| - newElement->setAttributeNS(attrURI, attrQName, attrValue, ec);
|
| - if (ec) // exception setting attributes
|
| - return;
|
| - }
|
| -}
|
| -
|
| -void XMLTokenizer::startElementNs(const xmlChar* xmlLocalName, const xmlChar* xmlPrefix, const xmlChar* xmlURI, int nb_namespaces,
|
| - const xmlChar** libxmlNamespaces, int nb_attributes, int nb_defaulted, const xmlChar** libxmlAttributes)
|
| -{
|
| - if (m_parserStopped)
|
| - return;
|
| -
|
| - if (m_parserPaused) {
|
| - m_pendingCallbacks->appendStartElementNSCallback(xmlLocalName, xmlPrefix, xmlURI, nb_namespaces, libxmlNamespaces,
|
| - nb_attributes, nb_defaulted, libxmlAttributes);
|
| - return;
|
| - }
|
| -
|
| - bool isFirstElement = !m_sawFirstElement;
|
| - m_sawFirstElement = true;
|
| -
|
| - exitText();
|
| -
|
| - String localName = toString(xmlLocalName);
|
| - String uri = toString(xmlURI);
|
| - String prefix = toString(xmlPrefix);
|
| -
|
| - if (m_parsingFragment && uri.isNull()) {
|
| - if (!prefix.isNull())
|
| - uri = m_prefixToNamespaceMap.get(prefix);
|
| - else
|
| - uri = m_defaultNamespaceURI;
|
| - }
|
| -
|
| - ExceptionCode ec = 0;
|
| - QualifiedName qName(prefix, localName, uri);
|
| - RefPtr<Element> newElement = m_doc->createElement(qName, true, ec);
|
| - if (!newElement) {
|
| - stopParsing();
|
| - return;
|
| - }
|
| -
|
| - handleElementNamespaces(newElement.get(), libxmlNamespaces, nb_namespaces, ec);
|
| - if (ec) {
|
| - stopParsing();
|
| - return;
|
| - }
|
| -
|
| - ScriptController* jsProxy = m_doc->frame() ? m_doc->frame()->script() : 0;
|
| - if (jsProxy && m_doc->frame()->script()->isEnabled())
|
| - jsProxy->setEventHandlerLineno(lineNumber());
|
| -
|
| - handleElementAttributes(newElement.get(), libxmlAttributes, nb_attributes, ec);
|
| - if (ec) {
|
| - stopParsing();
|
| - return;
|
| - }
|
| -
|
| - if (jsProxy)
|
| - jsProxy->setEventHandlerLineno(0);
|
| -
|
| - newElement->beginParsingChildren();
|
| -
|
| - ScriptElement* scriptElement = toScriptElement(newElement.get());
|
| - if (scriptElement)
|
| - m_scriptStartLine = lineNumber();
|
| -
|
| - if (!m_currentNode->addChild(newElement.get())) {
|
| - stopParsing();
|
| - return;
|
| - }
|
| -
|
| - setCurrentNode(newElement.get());
|
| - if (m_view && !newElement->attached())
|
| - newElement->attach();
|
| -
|
| - if (isFirstElement && m_doc->frame())
|
| - m_doc->frame()->loader()->dispatchDocumentElementAvailable();
|
| -}
|
| -
|
| -void XMLTokenizer::endElementNs()
|
| -{
|
| - if (m_parserStopped)
|
| - return;
|
| -
|
| - if (m_parserPaused) {
|
| - m_pendingCallbacks->appendEndElementNSCallback();
|
| - return;
|
| - }
|
| -
|
| - exitText();
|
| -
|
| - Node* n = m_currentNode;
|
| - RefPtr<Node> parent = n->parentNode();
|
| - n->finishParsingChildren();
|
| -
|
| - if (!n->isElementNode() || !m_view) {
|
| - setCurrentNode(parent.get());
|
| - return;
|
| - }
|
| -
|
| - Element* element = static_cast<Element*>(n);
|
| - ScriptElement* scriptElement = toScriptElement(element);
|
| - if (!scriptElement) {
|
| - setCurrentNode(parent.get());
|
| - return;
|
| - }
|
| -
|
| - // don't load external scripts for standalone documents (for now)
|
| - ASSERT(!m_pendingScript);
|
| - m_requestingScript = true;
|
| -
|
| - String scriptHref = scriptElement->sourceAttributeValue();
|
| - if (!scriptHref.isEmpty()) {
|
| - // we have a src attribute
|
| - String scriptCharset = scriptElement->scriptCharset();
|
| - if ((m_pendingScript = m_doc->docLoader()->requestScript(scriptHref, scriptCharset))) {
|
| - m_scriptElement = element;
|
| - m_pendingScript->addClient(this);
|
| -
|
| - // m_pendingScript will be 0 if script was already loaded and ref() executed it
|
| - if (m_pendingScript)
|
| - pauseParsing();
|
| - } else
|
| - m_scriptElement = 0;
|
| - } else
|
| - m_view->frame()->loader()->executeScript(ScriptSourceCode(scriptElement->scriptContent(), m_doc->url(), m_scriptStartLine));
|
| -
|
| - m_requestingScript = false;
|
| - setCurrentNode(parent.get());
|
| -}
|
| -
|
| -void XMLTokenizer::characters(const xmlChar* s, int len)
|
| -{
|
| - if (m_parserStopped)
|
| - return;
|
| -
|
| - if (m_parserPaused) {
|
| - m_pendingCallbacks->appendCharactersCallback(s, len);
|
| - return;
|
| - }
|
| -
|
| - if (m_currentNode->isTextNode() || enterText())
|
| - m_bufferedText.append(s, len);
|
| -}
|
| -
|
| -void XMLTokenizer::error(ErrorType type, const char* message, va_list args)
|
| -{
|
| - if (m_parserStopped)
|
| - return;
|
| -
|
| -#if PLATFORM(WIN_OS)
|
| - char m[1024];
|
| - vsnprintf(m, sizeof(m) - 1, message, args);
|
| -#else
|
| - char* m;
|
| - vasprintf(&m, message, args);
|
| -#endif
|
| -
|
| - if (m_parserPaused)
|
| - m_pendingCallbacks->appendErrorCallback(type, m, lineNumber(), columnNumber());
|
| - else
|
| - handleError(type, m, lineNumber(), columnNumber());
|
| -
|
| -#if !PLATFORM(WIN_OS)
|
| - free(m);
|
| -#endif
|
| -}
|
| -
|
| -void XMLTokenizer::processingInstruction(const xmlChar* target, const xmlChar* data)
|
| -{
|
| - if (m_parserStopped)
|
| - return;
|
| -
|
| - if (m_parserPaused) {
|
| - m_pendingCallbacks->appendProcessingInstructionCallback(target, data);
|
| - return;
|
| - }
|
| -
|
| - exitText();
|
| -
|
| - // ### handle exceptions
|
| - int exception = 0;
|
| - RefPtr<ProcessingInstruction> pi = m_doc->createProcessingInstruction(
|
| - toString(target), toString(data), exception);
|
| - if (exception)
|
| - return;
|
| -
|
| - pi->setCreatedByParser(true);
|
| -
|
| - if (!m_currentNode->addChild(pi.get()))
|
| - return;
|
| - if (m_view && !pi->attached())
|
| - pi->attach();
|
| -
|
| - pi->finishParsingChildren();
|
| -
|
| -#if ENABLE(XSLT)
|
| - m_sawXSLTransform = !m_sawFirstElement && pi->isXSL();
|
| - if (m_sawXSLTransform && !m_doc->transformSourceDocument())
|
| - stopParsing();
|
| -#endif
|
| -}
|
| -
|
| -void XMLTokenizer::cdataBlock(const xmlChar* s, int len)
|
| -{
|
| - if (m_parserStopped)
|
| - return;
|
| -
|
| - if (m_parserPaused) {
|
| - m_pendingCallbacks->appendCDATABlockCallback(s, len);
|
| - return;
|
| - }
|
| -
|
| - exitText();
|
| -
|
| - RefPtr<Node> newNode = new CDATASection(m_doc, toString(s, len));
|
| - if (!m_currentNode->addChild(newNode.get()))
|
| - return;
|
| - if (m_view && !newNode->attached())
|
| - newNode->attach();
|
| -}
|
| -
|
| -void XMLTokenizer::comment(const xmlChar* s)
|
| -{
|
| - if (m_parserStopped)
|
| - return;
|
| -
|
| - if (m_parserPaused) {
|
| - m_pendingCallbacks->appendCommentCallback(s);
|
| - return;
|
| - }
|
| -
|
| - exitText();
|
| -
|
| - RefPtr<Node> newNode = new Comment(m_doc, toString(s));
|
| - m_currentNode->addChild(newNode.get());
|
| - if (m_view && !newNode->attached())
|
| - newNode->attach();
|
| -}
|
| -
|
| -void XMLTokenizer::startDocument(const xmlChar* version, const xmlChar* encoding, int standalone)
|
| -{
|
| - ExceptionCode ec = 0;
|
| -
|
| - if (version)
|
| - m_doc->setXMLVersion(toString(version), ec);
|
| - m_doc->setXMLStandalone(standalone == 1, ec); // possible values are 0, 1, and -1
|
| - if (encoding)
|
| - m_doc->setXMLEncoding(toString(encoding));
|
| -}
|
| -
|
| -void XMLTokenizer::endDocument()
|
| -{
|
| - exitText();
|
| -}
|
| -
|
| -void XMLTokenizer::internalSubset(const xmlChar* name, const xmlChar* externalID, const xmlChar* systemID)
|
| -{
|
| - if (m_parserStopped)
|
| - return;
|
| -
|
| - if (m_parserPaused) {
|
| - m_pendingCallbacks->appendInternalSubsetCallback(name, externalID, systemID);
|
| - return;
|
| - }
|
| -
|
| - if (m_doc) {
|
| -#if ENABLE(WML)
|
| - String extId = toString(externalID);
|
| - if (isWMLDocument()
|
| - && extId != "-//WAPFORUM//DTD WML 1.3//EN"
|
| - && extId != "-//WAPFORUM//DTD WML 1.2//EN"
|
| - && extId != "-//WAPFORUM//DTD WML 1.1//EN"
|
| - && extId != "-//WAPFORUM//DTD WML 1.0//EN")
|
| - handleError(fatal, "Invalid DTD Public ID", lineNumber(), columnNumber());
|
| -#endif
|
| -
|
| - m_doc->addChild(DocumentType::create(m_doc, toString(name), toString(externalID), toString(systemID)));
|
| - }
|
| -}
|
| -
|
| -static inline XMLTokenizer* getTokenizer(void* closure)
|
| -{
|
| - xmlParserCtxtPtr ctxt = static_cast<xmlParserCtxtPtr>(closure);
|
| - return static_cast<XMLTokenizer*>(ctxt->_private);
|
| -}
|
| -
|
| -// This is a hack around http://bugzilla.gnome.org/show_bug.cgi?id=159219
|
| -// Otherwise libxml seems to call all the SAX callbacks twice for any replaced entity.
|
| -static inline bool hackAroundLibXMLEntityBug(void* closure)
|
| -{
|
| -#if LIBXML_VERSION >= 20627
|
| - UNUSED_PARAM(closure);
|
| -
|
| - // This bug has been fixed in libxml 2.6.27.
|
| - return false;
|
| -#else
|
| - return static_cast<xmlParserCtxtPtr>(closure)->node;
|
| -#endif
|
| -}
|
| -
|
| -static void startElementNsHandler(void* closure, const xmlChar* localname, const xmlChar* prefix, const xmlChar* uri, int nb_namespaces, const xmlChar** namespaces, int nb_attributes, int nb_defaulted, const xmlChar** libxmlAttributes)
|
| -{
|
| - if (hackAroundLibXMLEntityBug(closure))
|
| - return;
|
| -
|
| - getTokenizer(closure)->startElementNs(localname, prefix, uri, nb_namespaces, namespaces, nb_attributes, nb_defaulted, libxmlAttributes);
|
| -}
|
| -
|
| -static void endElementNsHandler(void* closure, const xmlChar*, const xmlChar*, const xmlChar*)
|
| -{
|
| - if (hackAroundLibXMLEntityBug(closure))
|
| - return;
|
| -
|
| - getTokenizer(closure)->endElementNs();
|
| -}
|
| -
|
| -static void charactersHandler(void* closure, const xmlChar* s, int len)
|
| -{
|
| - if (hackAroundLibXMLEntityBug(closure))
|
| - return;
|
| -
|
| - getTokenizer(closure)->characters(s, len);
|
| -}
|
| -
|
| -static void processingInstructionHandler(void* closure, const xmlChar* target, const xmlChar* data)
|
| -{
|
| - if (hackAroundLibXMLEntityBug(closure))
|
| - return;
|
| -
|
| - getTokenizer(closure)->processingInstruction(target, data);
|
| -}
|
| -
|
| -static void cdataBlockHandler(void* closure, const xmlChar* s, int len)
|
| -{
|
| - if (hackAroundLibXMLEntityBug(closure))
|
| - return;
|
| -
|
| - getTokenizer(closure)->cdataBlock(s, len);
|
| -}
|
| -
|
| -static void commentHandler(void* closure, const xmlChar* comment)
|
| -{
|
| - if (hackAroundLibXMLEntityBug(closure))
|
| - return;
|
| -
|
| - getTokenizer(closure)->comment(comment);
|
| -}
|
| -
|
| -WTF_ATTRIBUTE_PRINTF(2, 3)
|
| -static void warningHandler(void* closure, const char* message, ...)
|
| -{
|
| - va_list args;
|
| - va_start(args, message);
|
| - getTokenizer(closure)->error(XMLTokenizer::warning, message, args);
|
| - va_end(args);
|
| -}
|
| -
|
| -WTF_ATTRIBUTE_PRINTF(2, 3)
|
| -static void fatalErrorHandler(void* closure, const char* message, ...)
|
| -{
|
| - va_list args;
|
| - va_start(args, message);
|
| - getTokenizer(closure)->error(XMLTokenizer::fatal, message, args);
|
| - va_end(args);
|
| -}
|
| -
|
| -WTF_ATTRIBUTE_PRINTF(2, 3)
|
| -static void normalErrorHandler(void* closure, const char* message, ...)
|
| -{
|
| - va_list args;
|
| - va_start(args, message);
|
| - getTokenizer(closure)->error(XMLTokenizer::nonFatal, message, args);
|
| - va_end(args);
|
| -}
|
| -
|
| -// Using a global variable entity and marking it XML_INTERNAL_PREDEFINED_ENTITY is
|
| -// a hack to avoid malloc/free. Using a global variable like this could cause trouble
|
| -// if libxml implementation details were to change
|
| -static xmlChar sharedXHTMLEntityResult[5] = {0,0,0,0,0};
|
| -static xmlEntity sharedXHTMLEntity = {
|
| - 0, XML_ENTITY_DECL, 0, 0, 0, 0, 0, 0, 0,
|
| - sharedXHTMLEntityResult, sharedXHTMLEntityResult, 0,
|
| - XML_INTERNAL_PREDEFINED_ENTITY, 0, 0, 0, 0, 0,
|
| -#if LIBXML_VERSION >= 20627
|
| - // xmlEntity gained an extra member in 2.6.27.
|
| - 1
|
| -#endif
|
| -};
|
| -
|
| -static xmlEntityPtr getXHTMLEntity(const xmlChar* name)
|
| -{
|
| - UChar c = decodeNamedEntity(reinterpret_cast<const char*>(name));
|
| - if (!c)
|
| - return 0;
|
| -
|
| - CString value = String(&c, 1).utf8();
|
| - ASSERT(value.length() < 5);
|
| - sharedXHTMLEntity.length = value.length();
|
| - sharedXHTMLEntity.name = name;
|
| - memcpy(sharedXHTMLEntityResult, value.data(), sharedXHTMLEntity.length + 1);
|
| -
|
| - return &sharedXHTMLEntity;
|
| -}
|
| -
|
| -static xmlEntityPtr getEntityHandler(void* closure, const xmlChar* name)
|
| -{
|
| - xmlParserCtxtPtr ctxt = static_cast<xmlParserCtxtPtr>(closure);
|
| - xmlEntityPtr ent = xmlGetPredefinedEntity(name);
|
| - if (ent) {
|
| - ent->etype = XML_INTERNAL_PREDEFINED_ENTITY;
|
| - return ent;
|
| - }
|
| -
|
| - ent = xmlGetDocEntity(ctxt->myDoc, name);
|
| - if (!ent && (getTokenizer(closure)->isXHTMLDocument()
|
| -#if ENABLE(WML)
|
| - || getTokenizer(closure)->isWMLDocument()
|
| -#endif
|
| - )) {
|
| - ent = getXHTMLEntity(name);
|
| - if (ent)
|
| - ent->etype = XML_INTERNAL_GENERAL_ENTITY;
|
| - }
|
| -
|
| - return ent;
|
| -}
|
| -
|
| -static void startDocumentHandler(void* closure)
|
| -{
|
| - xmlParserCtxt* ctxt = static_cast<xmlParserCtxt*>(closure);
|
| - getTokenizer(closure)->startDocument(ctxt->version, ctxt->encoding, ctxt->standalone);
|
| - xmlSAX2StartDocument(closure);
|
| -}
|
| -
|
| -static void endDocumentHandler(void* closure)
|
| -{
|
| - getTokenizer(closure)->endDocument();
|
| - xmlSAX2EndDocument(closure);
|
| -}
|
| -
|
| -static void internalSubsetHandler(void* closure, const xmlChar* name, const xmlChar* externalID, const xmlChar* systemID)
|
| -{
|
| - getTokenizer(closure)->internalSubset(name, externalID, systemID);
|
| - xmlSAX2InternalSubset(closure, name, externalID, systemID);
|
| -}
|
| -
|
| -static void externalSubsetHandler(void* closure, const xmlChar*, const xmlChar* externalId, const xmlChar*)
|
| -{
|
| - String extId = toString(externalId);
|
| - if ((extId == "-//W3C//DTD XHTML 1.0 Transitional//EN")
|
| - || (extId == "-//W3C//DTD XHTML 1.1//EN")
|
| - || (extId == "-//W3C//DTD XHTML 1.0 Strict//EN")
|
| - || (extId == "-//W3C//DTD XHTML 1.0 Frameset//EN")
|
| - || (extId == "-//W3C//DTD XHTML Basic 1.0//EN")
|
| - || (extId == "-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN")
|
| - || (extId == "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN")
|
| - || (extId == "-//WAPFORUM//DTD XHTML Mobile 1.0//EN"))
|
| - getTokenizer(closure)->setIsXHTMLDocument(true); // controls if we replace entities or not.
|
| -}
|
| -
|
| -static void ignorableWhitespaceHandler(void*, const xmlChar*, int)
|
| -{
|
| - // nothing to do, but we need this to work around a crasher
|
| - // http://bugzilla.gnome.org/show_bug.cgi?id=172255
|
| - // http://bugs.webkit.org/show_bug.cgi?id=5792
|
| -}
|
| -
|
| -void XMLTokenizer::initializeParserContext(const char* chunk)
|
| -{
|
| - xmlSAXHandler sax;
|
| - memset(&sax, 0, sizeof(sax));
|
| -
|
| - sax.error = normalErrorHandler;
|
| - sax.fatalError = fatalErrorHandler;
|
| - sax.characters = charactersHandler;
|
| - sax.processingInstruction = processingInstructionHandler;
|
| - sax.cdataBlock = cdataBlockHandler;
|
| - sax.comment = commentHandler;
|
| - sax.warning = warningHandler;
|
| - sax.startElementNs = startElementNsHandler;
|
| - sax.endElementNs = endElementNsHandler;
|
| - sax.getEntity = getEntityHandler;
|
| - sax.startDocument = startDocumentHandler;
|
| - sax.endDocument = endDocumentHandler;
|
| - sax.internalSubset = internalSubsetHandler;
|
| - sax.externalSubset = externalSubsetHandler;
|
| - sax.ignorableWhitespace = ignorableWhitespaceHandler;
|
| - sax.entityDecl = xmlSAX2EntityDecl;
|
| - sax.initialized = XML_SAX2_MAGIC;
|
| - m_parserStopped = false;
|
| - m_sawError = false;
|
| - m_sawXSLTransform = false;
|
| - m_sawFirstElement = false;
|
| -
|
| - if (m_parsingFragment)
|
| - m_context = createMemoryParser(&sax, this, chunk);
|
| - else
|
| - m_context = createStringParser(&sax, this);
|
| -}
|
| -
|
| -void XMLTokenizer::doEnd()
|
| -{
|
| -#if ENABLE(XSLT)
|
| - if (m_sawXSLTransform) {
|
| - m_doc->setTransformSource(xmlDocPtrForString(m_doc->docLoader(), m_originalSourceForTransform, m_doc->url().string()));
|
| -
|
| - m_doc->setParsing(false); // Make the doc think it's done, so it will apply xsl sheets.
|
| - m_doc->updateStyleSelector();
|
| - m_doc->setParsing(true);
|
| - m_parserStopped = true;
|
| - }
|
| -#endif
|
| -
|
| - if (m_context) {
|
| - // Tell libxml we're done.
|
| - xmlParseChunk(m_context, 0, 0, 1);
|
| -
|
| - if (m_context->myDoc)
|
| - xmlFreeDoc(m_context->myDoc);
|
| - xmlFreeParserCtxt(m_context);
|
| - m_context = 0;
|
| - }
|
| -}
|
| -
|
| -#if ENABLE(XSLT)
|
| -void* xmlDocPtrForString(DocLoader* docLoader, const String& source, const String& url)
|
| -{
|
| - if (source.isEmpty())
|
| - return 0;
|
| -
|
| - // Parse in a single chunk into an xmlDocPtr
|
| - // FIXME: Hook up error handlers so that a failure to parse the main document results in
|
| - // good error messages.
|
| - const UChar BOM = 0xFEFF;
|
| - const unsigned char BOMHighByte = *reinterpret_cast<const unsigned char*>(&BOM);
|
| -
|
| - xmlGenericErrorFunc oldErrorFunc = xmlGenericError;
|
| - void* oldErrorContext = xmlGenericErrorContext;
|
| -
|
| - setLoaderForLibXMLCallbacks(docLoader);
|
| - xmlSetGenericErrorFunc(0, errorFunc);
|
| -
|
| - xmlDocPtr sourceDoc = xmlReadMemory(reinterpret_cast<const char*>(source.characters()),
|
| - source.length() * sizeof(UChar),
|
| - url.latin1().data(),
|
| - BOMHighByte == 0xFF ? "UTF-16LE" : "UTF-16BE",
|
| - XSLT_PARSE_OPTIONS);
|
| -
|
| - setLoaderForLibXMLCallbacks(0);
|
| - xmlSetGenericErrorFunc(oldErrorContext, oldErrorFunc);
|
| -
|
| - return sourceDoc;
|
| -}
|
| -#endif
|
| -
|
| -int XMLTokenizer::lineNumber() const
|
| -{
|
| - return m_context ? m_context->input->line : 1;
|
| -}
|
| -
|
| -int XMLTokenizer::columnNumber() const
|
| -{
|
| - return m_context ? m_context->input->col : 1;
|
| -}
|
| -
|
| -void XMLTokenizer::stopParsing()
|
| -{
|
| - Tokenizer::stopParsing();
|
| - xmlStopParser(m_context);
|
| -}
|
| -
|
| -void XMLTokenizer::resumeParsing()
|
| -{
|
| - ASSERT(m_parserPaused);
|
| -
|
| - m_parserPaused = false;
|
| -
|
| - // First, execute any pending callbacks
|
| - while (!m_pendingCallbacks->isEmpty()) {
|
| - m_pendingCallbacks->callAndRemoveFirstCallback(this);
|
| -
|
| - // A callback paused the parser
|
| - if (m_parserPaused)
|
| - return;
|
| - }
|
| -
|
| - // Then, write any pending data
|
| - SegmentedString rest = m_pendingSrc;
|
| - m_pendingSrc.clear();
|
| - write(rest, false);
|
| -
|
| - // Finally, if finish() has been called and write() didn't result
|
| - // in any further callbacks being queued, call end()
|
| - if (m_finishCalled && m_pendingCallbacks->isEmpty())
|
| - end();
|
| -}
|
| -
|
| -bool parseXMLDocumentFragment(const String& chunk, DocumentFragment* fragment, Element* parent)
|
| -{
|
| - if (!chunk.length())
|
| - return true;
|
| -
|
| - XMLTokenizer tokenizer(fragment, parent);
|
| -
|
| - tokenizer.initializeParserContext(chunk.utf8().data());
|
| -
|
| - xmlParseContent(tokenizer.m_context);
|
| -
|
| - tokenizer.endDocument();
|
| -
|
| - // Check if all the chunk has been processed.
|
| - long bytesProcessed = xmlByteConsumed(tokenizer.m_context);
|
| - if (bytesProcessed == -1 || ((unsigned long)bytesProcessed) == sizeof(UChar) * chunk.length())
|
| - return false;
|
| -
|
| - // No error if the chunk is well formed or it is not but we have no error.
|
| - return tokenizer.m_context->wellFormed || xmlCtxtGetLastError(tokenizer.m_context) == 0;
|
| -}
|
| -
|
| -// --------------------------------
|
| -
|
| -struct AttributeParseState {
|
| - HashMap<String, String> attributes;
|
| - bool gotAttributes;
|
| -};
|
| -
|
| -static void attributesStartElementNsHandler(void* closure, const xmlChar* xmlLocalName, const xmlChar* /*xmlPrefix*/,
|
| - const xmlChar* /*xmlURI*/, int /*nb_namespaces*/, const xmlChar** /*namespaces*/,
|
| - int nb_attributes, int /*nb_defaulted*/, const xmlChar** libxmlAttributes)
|
| -{
|
| - if (strcmp(reinterpret_cast<const char*>(xmlLocalName), "attrs") != 0)
|
| - return;
|
| -
|
| - xmlParserCtxtPtr ctxt = static_cast<xmlParserCtxtPtr>(closure);
|
| - AttributeParseState* state = static_cast<AttributeParseState*>(ctxt->_private);
|
| -
|
| - state->gotAttributes = true;
|
| -
|
| - xmlSAX2Attributes* attributes = reinterpret_cast<xmlSAX2Attributes*>(libxmlAttributes);
|
| - for(int i = 0; i < nb_attributes; i++) {
|
| - String attrLocalName = toString(attributes[i].localname);
|
| - int valueLength = (int) (attributes[i].end - attributes[i].value);
|
| - String attrValue = toString(attributes[i].value, valueLength);
|
| - String attrPrefix = toString(attributes[i].prefix);
|
| - String attrQName = attrPrefix.isEmpty() ? attrLocalName : attrPrefix + ":" + attrLocalName;
|
| -
|
| - state->attributes.set(attrQName, attrValue);
|
| - }
|
| -}
|
| -
|
| -HashMap<String, String> parseAttributes(const String& string, bool& attrsOK)
|
| -{
|
| - AttributeParseState state;
|
| - state.gotAttributes = false;
|
| -
|
| - xmlSAXHandler sax;
|
| - memset(&sax, 0, sizeof(sax));
|
| - sax.startElementNs = attributesStartElementNsHandler;
|
| - sax.initialized = XML_SAX2_MAGIC;
|
| - xmlParserCtxtPtr parser = createStringParser(&sax, &state);
|
| - String parseString = "<?xml version=\"1.0\"?><attrs " + string + " />";
|
| - xmlParseChunk(parser, reinterpret_cast<const char*>(parseString.characters()), parseString.length() * sizeof(UChar), 1);
|
| - if (parser->myDoc)
|
| - xmlFreeDoc(parser->myDoc);
|
| - xmlFreeParserCtxt(parser);
|
| - attrsOK = state.gotAttributes;
|
| - return state.attributes;
|
| -}
|
| -
|
| -}
|
| -
|
| -
|
| +/*
|
| + * Copyright (C) 2000 Peter Kelly (pmk@post.com)
|
| + * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
|
| + * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
|
| + * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
|
| + * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
|
| + * Copyright (C) 2008 Holger Hans Peter Freyther
|
| + * Copyright (C) 2008 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.
|
| + */
|
| +
|
| +#include "config.h"
|
| +#include "XMLTokenizer.h"
|
| +
|
| +#include "CDATASection.h"
|
| +#include "CString.h"
|
| +#include "CachedScript.h"
|
| +#include "Comment.h"
|
| +#include "DocLoader.h"
|
| +#include "Document.h"
|
| +#include "DocumentFragment.h"
|
| +#include "DocumentType.h"
|
| +#include "Frame.h"
|
| +#include "FrameLoader.h"
|
| +#include "FrameView.h"
|
| +#include "HTMLLinkElement.h"
|
| +#include "HTMLStyleElement.h"
|
| +#include "HTMLTokenizer.h" // for decodeNamedEntity
|
| +#include "ProcessingInstruction.h"
|
| +#include "ResourceError.h"
|
| +#include "ResourceHandle.h"
|
| +#include "ResourceRequest.h"
|
| +#include "ResourceResponse.h"
|
| +#include "ScriptController.h"
|
| +#include "ScriptElement.h"
|
| +#include "ScriptSourceCode.h"
|
| +#include "ScriptValue.h"
|
| +#include "TextResourceDecoder.h"
|
| +#include <libxml/parser.h>
|
| +#include <libxml/parserInternals.h>
|
| +#include <wtf/Platform.h>
|
| +#include <wtf/StringExtras.h>
|
| +#include <wtf/Threading.h>
|
| +#include <wtf/UnusedParam.h>
|
| +#include <wtf/Vector.h>
|
| +
|
| +#if ENABLE(XSLT)
|
| +#include <libxslt/xslt.h>
|
| +#endif
|
| +
|
| +using namespace std;
|
| +
|
| +namespace WebCore {
|
| +
|
| +class PendingCallbacks : Noncopyable {
|
| +public:
|
| + ~PendingCallbacks()
|
| + {
|
| + deleteAllValues(m_callbacks);
|
| + }
|
| +
|
| + void appendStartElementNSCallback(const xmlChar* xmlLocalName, const xmlChar* xmlPrefix, const xmlChar* xmlURI, int nb_namespaces,
|
| + const xmlChar** namespaces, int nb_attributes, int nb_defaulted, const xmlChar** attributes)
|
| + {
|
| + PendingStartElementNSCallback* callback = new PendingStartElementNSCallback;
|
| +
|
| + callback->xmlLocalName = xmlStrdup(xmlLocalName);
|
| + callback->xmlPrefix = xmlStrdup(xmlPrefix);
|
| + callback->xmlURI = xmlStrdup(xmlURI);
|
| + callback->nb_namespaces = nb_namespaces;
|
| + callback->namespaces = static_cast<xmlChar**>(xmlMalloc(sizeof(xmlChar*) * nb_namespaces * 2));
|
| + for (int i = 0; i < nb_namespaces * 2 ; i++)
|
| + callback->namespaces[i] = xmlStrdup(namespaces[i]);
|
| + callback->nb_attributes = nb_attributes;
|
| + callback->nb_defaulted = nb_defaulted;
|
| + callback->attributes = static_cast<xmlChar**>(xmlMalloc(sizeof(xmlChar*) * nb_attributes * 5));
|
| + for (int i = 0; i < nb_attributes; i++) {
|
| + // Each attribute has 5 elements in the array:
|
| + // name, prefix, uri, value and an end pointer.
|
| +
|
| + for (int j = 0; j < 3; j++)
|
| + callback->attributes[i * 5 + j] = xmlStrdup(attributes[i * 5 + j]);
|
| +
|
| + int len = attributes[i * 5 + 4] - attributes[i * 5 + 3];
|
| +
|
| + callback->attributes[i * 5 + 3] = xmlStrndup(attributes[i * 5 + 3], len);
|
| + callback->attributes[i * 5 + 4] = callback->attributes[i * 5 + 3] + len;
|
| + }
|
| +
|
| + m_callbacks.append(callback);
|
| + }
|
| +
|
| + void appendEndElementNSCallback()
|
| + {
|
| + PendingEndElementNSCallback* callback = new PendingEndElementNSCallback;
|
| +
|
| + m_callbacks.append(callback);
|
| + }
|
| +
|
| + void appendCharactersCallback(const xmlChar* s, int len)
|
| + {
|
| + PendingCharactersCallback* callback = new PendingCharactersCallback;
|
| +
|
| + callback->s = xmlStrndup(s, len);
|
| + callback->len = len;
|
| +
|
| + m_callbacks.append(callback);
|
| + }
|
| +
|
| + void appendProcessingInstructionCallback(const xmlChar* target, const xmlChar* data)
|
| + {
|
| + PendingProcessingInstructionCallback* callback = new PendingProcessingInstructionCallback;
|
| +
|
| + callback->target = xmlStrdup(target);
|
| + callback->data = xmlStrdup(data);
|
| +
|
| + m_callbacks.append(callback);
|
| + }
|
| +
|
| + void appendCDATABlockCallback(const xmlChar* s, int len)
|
| + {
|
| + PendingCDATABlockCallback* callback = new PendingCDATABlockCallback;
|
| +
|
| + callback->s = xmlStrndup(s, len);
|
| + callback->len = len;
|
| +
|
| + m_callbacks.append(callback);
|
| + }
|
| +
|
| + void appendCommentCallback(const xmlChar* s)
|
| + {
|
| + PendingCommentCallback* callback = new PendingCommentCallback;
|
| +
|
| + callback->s = xmlStrdup(s);
|
| +
|
| + m_callbacks.append(callback);
|
| + }
|
| +
|
| + void appendInternalSubsetCallback(const xmlChar* name, const xmlChar* externalID, const xmlChar* systemID)
|
| + {
|
| + PendingInternalSubsetCallback* callback = new PendingInternalSubsetCallback;
|
| +
|
| + callback->name = xmlStrdup(name);
|
| + callback->externalID = xmlStrdup(externalID);
|
| + callback->systemID = xmlStrdup(systemID);
|
| +
|
| + m_callbacks.append(callback);
|
| + }
|
| +
|
| + void appendErrorCallback(XMLTokenizer::ErrorType type, const char* message, int lineNumber, int columnNumber)
|
| + {
|
| + PendingErrorCallback* callback = new PendingErrorCallback;
|
| +
|
| + callback->message = strdup(message);
|
| + callback->type = type;
|
| + callback->lineNumber = lineNumber;
|
| + callback->columnNumber = columnNumber;
|
| +
|
| + m_callbacks.append(callback);
|
| + }
|
| +
|
| + void callAndRemoveFirstCallback(XMLTokenizer* tokenizer)
|
| + {
|
| + OwnPtr<PendingCallback> callback(m_callbacks.first());
|
| + m_callbacks.removeFirst();
|
| + callback->call(tokenizer);
|
| + }
|
| +
|
| + bool isEmpty() const { return m_callbacks.isEmpty(); }
|
| +
|
| +private:
|
| + struct PendingCallback {
|
| + virtual ~PendingCallback() { }
|
| + virtual void call(XMLTokenizer* tokenizer) = 0;
|
| + };
|
| +
|
| + struct PendingStartElementNSCallback : public PendingCallback {
|
| + virtual ~PendingStartElementNSCallback() {
|
| + xmlFree(xmlLocalName);
|
| + xmlFree(xmlPrefix);
|
| + xmlFree(xmlURI);
|
| + for (int i = 0; i < nb_namespaces * 2; i++)
|
| + xmlFree(namespaces[i]);
|
| + xmlFree(namespaces);
|
| + for (int i = 0; i < nb_attributes; i++)
|
| + for (int j = 0; j < 4; j++)
|
| + xmlFree(attributes[i * 5 + j]);
|
| + xmlFree(attributes);
|
| + }
|
| +
|
| + virtual void call(XMLTokenizer* tokenizer) {
|
| + tokenizer->startElementNs(xmlLocalName, xmlPrefix, xmlURI,
|
| + nb_namespaces, const_cast<const xmlChar**>(namespaces),
|
| + nb_attributes, nb_defaulted, const_cast<const xmlChar**>(attributes));
|
| + }
|
| +
|
| + xmlChar* xmlLocalName;
|
| + xmlChar* xmlPrefix;
|
| + xmlChar* xmlURI;
|
| + int nb_namespaces;
|
| + xmlChar** namespaces;
|
| + int nb_attributes;
|
| + int nb_defaulted;
|
| + xmlChar** attributes;
|
| + };
|
| +
|
| + struct PendingEndElementNSCallback : public PendingCallback {
|
| + virtual void call(XMLTokenizer* tokenizer)
|
| + {
|
| + tokenizer->endElementNs();
|
| + }
|
| + };
|
| +
|
| + struct PendingCharactersCallback : public PendingCallback {
|
| + virtual ~PendingCharactersCallback()
|
| + {
|
| + xmlFree(s);
|
| + }
|
| +
|
| + virtual void call(XMLTokenizer* tokenizer)
|
| + {
|
| + tokenizer->characters(s, len);
|
| + }
|
| +
|
| + xmlChar* s;
|
| + int len;
|
| + };
|
| +
|
| + struct PendingProcessingInstructionCallback : public PendingCallback {
|
| + virtual ~PendingProcessingInstructionCallback()
|
| + {
|
| + xmlFree(target);
|
| + xmlFree(data);
|
| + }
|
| +
|
| + virtual void call(XMLTokenizer* tokenizer)
|
| + {
|
| + tokenizer->processingInstruction(target, data);
|
| + }
|
| +
|
| + xmlChar* target;
|
| + xmlChar* data;
|
| + };
|
| +
|
| + struct PendingCDATABlockCallback : public PendingCallback {
|
| + virtual ~PendingCDATABlockCallback()
|
| + {
|
| + xmlFree(s);
|
| + }
|
| +
|
| + virtual void call(XMLTokenizer* tokenizer)
|
| + {
|
| + tokenizer->cdataBlock(s, len);
|
| + }
|
| +
|
| + xmlChar* s;
|
| + int len;
|
| + };
|
| +
|
| + struct PendingCommentCallback : public PendingCallback {
|
| + virtual ~PendingCommentCallback()
|
| + {
|
| + xmlFree(s);
|
| + }
|
| +
|
| + virtual void call(XMLTokenizer* tokenizer)
|
| + {
|
| + tokenizer->comment(s);
|
| + }
|
| +
|
| + xmlChar* s;
|
| + };
|
| +
|
| + struct PendingInternalSubsetCallback : public PendingCallback {
|
| + virtual ~PendingInternalSubsetCallback()
|
| + {
|
| + xmlFree(name);
|
| + xmlFree(externalID);
|
| + xmlFree(systemID);
|
| + }
|
| +
|
| + virtual void call(XMLTokenizer* tokenizer)
|
| + {
|
| + tokenizer->internalSubset(name, externalID, systemID);
|
| + }
|
| +
|
| + xmlChar* name;
|
| + xmlChar* externalID;
|
| + xmlChar* systemID;
|
| + };
|
| +
|
| + struct PendingErrorCallback: public PendingCallback {
|
| + virtual ~PendingErrorCallback()
|
| + {
|
| + free (message);
|
| + }
|
| +
|
| + virtual void call(XMLTokenizer* tokenizer)
|
| + {
|
| + tokenizer->handleError(type, message, lineNumber, columnNumber);
|
| + }
|
| +
|
| + XMLTokenizer::ErrorType type;
|
| + char* message;
|
| + int lineNumber;
|
| + int columnNumber;
|
| + };
|
| +
|
| + Deque<PendingCallback*> m_callbacks;
|
| +};
|
| +// --------------------------------
|
| +
|
| +static int globalDescriptor = 0;
|
| +static DocLoader* globalDocLoader = 0;
|
| +static ThreadIdentifier libxmlLoaderThread = 0;
|
| +
|
| +static int matchFunc(const char*)
|
| +{
|
| + // Only match loads initiated due to uses of libxml2 from within XMLTokenizer to avoid
|
| + // interfering with client applications that also use libxml2. http://bugs.webkit.org/show_bug.cgi?id=17353
|
| + return globalDocLoader && currentThread() == libxmlLoaderThread;
|
| +}
|
| +
|
| +class OffsetBuffer {
|
| +public:
|
| + OffsetBuffer(const Vector<char>& b) : m_buffer(b), m_currentOffset(0) { }
|
| +
|
| + int readOutBytes(char* outputBuffer, unsigned askedToRead) {
|
| + unsigned bytesLeft = m_buffer.size() - m_currentOffset;
|
| + unsigned lenToCopy = min(askedToRead, bytesLeft);
|
| + if (lenToCopy) {
|
| + memcpy(outputBuffer, m_buffer.data() + m_currentOffset, lenToCopy);
|
| + m_currentOffset += lenToCopy;
|
| + }
|
| + return lenToCopy;
|
| + }
|
| +
|
| +private:
|
| + Vector<char> m_buffer;
|
| + unsigned m_currentOffset;
|
| +};
|
| +
|
| +static bool shouldAllowExternalLoad(const KURL& url)
|
| +{
|
| + String urlString = url.string();
|
| +
|
| + // On non-Windows platforms libxml asks for this URL, the
|
| + // "XML_XML_DEFAULT_CATALOG", on initialization.
|
| + if (urlString == "file:///etc/xml/catalog")
|
| + return false;
|
| +
|
| + // On Windows, libxml computes a URL relative to where its DLL resides.
|
| + if (urlString.startsWith("file:///", false) && urlString.endsWith("/etc/catalog", false))
|
| + return false;
|
| +
|
| + // The most common DTD. There isn't much point in hammering www.w3c.org
|
| + // by requesting this URL for every XHTML document.
|
| + if (urlString.startsWith("http://www.w3.org/TR/xhtml", false))
|
| + return false;
|
| +
|
| + // Similarly, there isn't much point in requesting the SVG DTD.
|
| + if (urlString.startsWith("http://www.w3.org/Graphics/SVG", false))
|
| + return false;
|
| +
|
| + // The libxml doesn't give us a lot of context for deciding whether to
|
| + // allow this request. In the worst case, this load could be for an
|
| + // external entity and the resulting document could simply read the
|
| + // retrieved content. If we had more context, we could potentially allow
|
| + // the parser to load a DTD. As things stand, we take the conservative
|
| + // route and allow same-origin requests only.
|
| + if (!globalDocLoader->doc()->securityOrigin()->canRequest(url)) {
|
| + globalDocLoader->printAccessDeniedMessage(url);
|
| + return false;
|
| + }
|
| +
|
| + return true;
|
| +}
|
| +
|
| +static void* openFunc(const char* uri)
|
| +{
|
| + ASSERT(globalDocLoader);
|
| + ASSERT(currentThread() == libxmlLoaderThread);
|
| +
|
| + KURL url(uri);
|
| +
|
| + if (!shouldAllowExternalLoad(url))
|
| + return &globalDescriptor;
|
| +
|
| + ResourceError error;
|
| + ResourceResponse response;
|
| + Vector<char> data;
|
| +
|
| + DocLoader* docLoader = globalDocLoader;
|
| + globalDocLoader = 0;
|
| + // FIXME: We should restore the original global error handler as well.
|
| +
|
| + if (docLoader->frame())
|
| + docLoader->frame()->loader()->loadResourceSynchronously(url, error, response, data);
|
| +
|
| + globalDocLoader = docLoader;
|
| +
|
| + // We have to check the URL again after the load to catch redirects.
|
| + // See <https://bugs.webkit.org/show_bug.cgi?id=21963>.
|
| + if (!shouldAllowExternalLoad(response.url()))
|
| + return &globalDescriptor;
|
| +
|
| + return new OffsetBuffer(data);
|
| +}
|
| +
|
| +static int readFunc(void* context, char* buffer, int len)
|
| +{
|
| + // Do 0-byte reads in case of a null descriptor
|
| + if (context == &globalDescriptor)
|
| + return 0;
|
| +
|
| + OffsetBuffer* data = static_cast<OffsetBuffer*>(context);
|
| + return data->readOutBytes(buffer, len);
|
| +}
|
| +
|
| +static int writeFunc(void*, const char*, int)
|
| +{
|
| + // Always just do 0-byte writes
|
| + return 0;
|
| +}
|
| +
|
| +static int closeFunc(void* context)
|
| +{
|
| + if (context != &globalDescriptor) {
|
| + OffsetBuffer* data = static_cast<OffsetBuffer*>(context);
|
| + delete data;
|
| + }
|
| + return 0;
|
| +}
|
| +
|
| +#if ENABLE(XSLT)
|
| +static void errorFunc(void*, const char*, ...)
|
| +{
|
| + // FIXME: It would be nice to display error messages somewhere.
|
| +}
|
| +#endif
|
| +
|
| +void setLoaderForLibXMLCallbacks(DocLoader* docLoader)
|
| +{
|
| + globalDocLoader = docLoader;
|
| +}
|
| +
|
| +static bool didInit = false;
|
| +
|
| +static xmlParserCtxtPtr createStringParser(xmlSAXHandlerPtr handlers, void* userData)
|
| +{
|
| + if (!didInit) {
|
| + xmlInitParser();
|
| + xmlRegisterInputCallbacks(matchFunc, openFunc, readFunc, closeFunc);
|
| + xmlRegisterOutputCallbacks(matchFunc, openFunc, writeFunc, closeFunc);
|
| + libxmlLoaderThread = currentThread();
|
| + didInit = true;
|
| + }
|
| +
|
| + xmlParserCtxtPtr parser = xmlCreatePushParserCtxt(handlers, 0, 0, 0, 0);
|
| + parser->_private = userData;
|
| + parser->replaceEntities = true;
|
| + const UChar BOM = 0xFEFF;
|
| + const unsigned char BOMHighByte = *reinterpret_cast<const unsigned char*>(&BOM);
|
| + xmlSwitchEncoding(parser, BOMHighByte == 0xFF ? XML_CHAR_ENCODING_UTF16LE : XML_CHAR_ENCODING_UTF16BE);
|
| +
|
| + return parser;
|
| +}
|
| +
|
| +
|
| +// Chunk should be encoded in UTF-8
|
| +static xmlParserCtxtPtr createMemoryParser(xmlSAXHandlerPtr handlers, void* userData, const char* chunk)
|
| +{
|
| + if (!didInit) {
|
| + xmlInitParser();
|
| + xmlRegisterInputCallbacks(matchFunc, openFunc, readFunc, closeFunc);
|
| + xmlRegisterOutputCallbacks(matchFunc, openFunc, writeFunc, closeFunc);
|
| + libxmlLoaderThread = currentThread();
|
| + didInit = true;
|
| + }
|
| +
|
| + xmlParserCtxtPtr parser = xmlCreateMemoryParserCtxt(chunk, xmlStrlen((const xmlChar*)chunk));
|
| +
|
| + if (!parser)
|
| + return 0;
|
| +
|
| + // Copy the sax handler
|
| + memcpy(parser->sax, handlers, sizeof(xmlSAXHandler));
|
| +
|
| + // Set parser options.
|
| + // XML_PARSE_NODICT: default dictionary option.
|
| + // XML_PARSE_NOENT: force entities substitutions.
|
| + xmlCtxtUseOptions(parser, XML_PARSE_NODICT | XML_PARSE_NOENT);
|
| +
|
| + // Internal initialization
|
| + parser->sax2 = 1;
|
| + parser->instate = XML_PARSER_CONTENT; // We are parsing a CONTENT
|
| + parser->depth = 0;
|
| + parser->str_xml = xmlDictLookup(parser->dict, BAD_CAST "xml", 3);
|
| + parser->str_xmlns = xmlDictLookup(parser->dict, BAD_CAST "xmlns", 5);
|
| + parser->str_xml_ns = xmlDictLookup(parser->dict, XML_XML_NAMESPACE, 36);
|
| + parser->_private = userData;
|
| +
|
| + return parser;
|
| +}
|
| +
|
| +// --------------------------------
|
| +
|
| +XMLTokenizer::XMLTokenizer(Document* _doc, FrameView* _view)
|
| + : m_doc(_doc)
|
| + , m_view(_view)
|
| + , m_context(0)
|
| + , m_pendingCallbacks(new PendingCallbacks)
|
| + , m_currentNode(_doc)
|
| + , m_currentNodeIsReferenced(false)
|
| + , m_sawError(false)
|
| + , m_sawXSLTransform(false)
|
| + , m_sawFirstElement(false)
|
| + , m_isXHTMLDocument(false)
|
| + , m_parserPaused(false)
|
| + , m_requestingScript(false)
|
| + , m_finishCalled(false)
|
| + , m_errorCount(0)
|
| + , m_lastErrorLine(0)
|
| + , m_lastErrorColumn(0)
|
| + , m_pendingScript(0)
|
| + , m_scriptStartLine(0)
|
| + , m_parsingFragment(false)
|
| +{
|
| +}
|
| +
|
| +XMLTokenizer::XMLTokenizer(DocumentFragment* fragment, Element* parentElement)
|
| + : m_doc(fragment->document())
|
| + , m_view(0)
|
| + , m_context(0)
|
| + , m_pendingCallbacks(new PendingCallbacks)
|
| + , m_currentNode(fragment)
|
| + , m_currentNodeIsReferenced(fragment)
|
| + , m_sawError(false)
|
| + , m_sawXSLTransform(false)
|
| + , m_sawFirstElement(false)
|
| + , m_isXHTMLDocument(false)
|
| + , m_parserPaused(false)
|
| + , m_requestingScript(false)
|
| + , m_finishCalled(false)
|
| + , m_errorCount(0)
|
| + , m_lastErrorLine(0)
|
| + , m_lastErrorColumn(0)
|
| + , m_pendingScript(0)
|
| + , m_scriptStartLine(0)
|
| + , m_parsingFragment(true)
|
| +{
|
| + if (fragment)
|
| + fragment->ref();
|
| + if (m_doc)
|
| + m_doc->ref();
|
| +
|
| + // Add namespaces based on the parent node
|
| + Vector<Element*> elemStack;
|
| + while (parentElement) {
|
| + elemStack.append(parentElement);
|
| +
|
| + Node* n = parentElement->parentNode();
|
| + if (!n || !n->isElementNode())
|
| + break;
|
| + parentElement = static_cast<Element*>(n);
|
| + }
|
| +
|
| + if (elemStack.isEmpty())
|
| + return;
|
| +
|
| + for (Element* element = elemStack.last(); !elemStack.isEmpty(); elemStack.removeLast()) {
|
| + if (NamedAttrMap* attrs = element->attributes()) {
|
| + for (unsigned i = 0; i < attrs->length(); i++) {
|
| + Attribute* attr = attrs->attributeItem(i);
|
| + if (attr->localName() == "xmlns")
|
| + m_defaultNamespaceURI = attr->value();
|
| + else if (attr->prefix() == "xmlns")
|
| + m_prefixToNamespaceMap.set(attr->localName(), attr->value());
|
| + }
|
| + }
|
| + }
|
| +
|
| + // If the parent element is not in document tree, there may be no xmlns attribute; just default to the parent's namespace.
|
| + if (m_defaultNamespaceURI.isNull() && !parentElement->inDocument())
|
| + m_defaultNamespaceURI = parentElement->namespaceURI();
|
| +}
|
| +
|
| +XMLTokenizer::~XMLTokenizer()
|
| +{
|
| + setCurrentNode(0);
|
| + if (m_parsingFragment && m_doc)
|
| + m_doc->deref();
|
| + if (m_pendingScript)
|
| + m_pendingScript->removeClient(this);
|
| + if (m_context)
|
| + xmlFreeParserCtxt(m_context);
|
| +}
|
| +
|
| +void XMLTokenizer::doWrite(const String& parseString)
|
| +{
|
| + if (!m_context)
|
| + initializeParserContext();
|
| +
|
| + // libXML throws an error if you try to switch the encoding for an empty string.
|
| + if (parseString.length()) {
|
| + // Hack around libxml2's lack of encoding overide support by manually
|
| + // resetting the encoding to UTF-16 before every chunk. Otherwise libxml
|
| + // will detect <?xml version="1.0" encoding="<encoding name>"?> blocks
|
| + // and switch encodings, causing the parse to fail.
|
| + const UChar BOM = 0xFEFF;
|
| + const unsigned char BOMHighByte = *reinterpret_cast<const unsigned char*>(&BOM);
|
| + xmlSwitchEncoding(m_context, BOMHighByte == 0xFF ? XML_CHAR_ENCODING_UTF16LE : XML_CHAR_ENCODING_UTF16BE);
|
| +
|
| + xmlParseChunk(m_context, reinterpret_cast<const char*>(parseString.characters()), sizeof(UChar) * parseString.length(), 0);
|
| + }
|
| +
|
| + if (m_doc->decoder() && m_doc->decoder()->sawError()) {
|
| + // If the decoder saw an error, report it as fatal (stops parsing)
|
| + handleError(fatal, "Encoding error", lineNumber(), columnNumber());
|
| + }
|
| +
|
| + return;
|
| +}
|
| +
|
| +static inline String toString(const xmlChar* str, unsigned len)
|
| +{
|
| + return UTF8Encoding().decode(reinterpret_cast<const char*>(str), len);
|
| +}
|
| +
|
| +static inline String toString(const xmlChar* str)
|
| +{
|
| + if (!str)
|
| + return String();
|
| +
|
| + return UTF8Encoding().decode(reinterpret_cast<const char*>(str), strlen(reinterpret_cast<const char*>(str)));
|
| +}
|
| +
|
| +struct _xmlSAX2Namespace {
|
| + const xmlChar* prefix;
|
| + const xmlChar* uri;
|
| +};
|
| +typedef struct _xmlSAX2Namespace xmlSAX2Namespace;
|
| +
|
| +static inline void handleElementNamespaces(Element* newElement, const xmlChar** libxmlNamespaces, int nb_namespaces, ExceptionCode& ec)
|
| +{
|
| + xmlSAX2Namespace* namespaces = reinterpret_cast<xmlSAX2Namespace*>(libxmlNamespaces);
|
| + for(int i = 0; i < nb_namespaces; i++) {
|
| + String namespaceQName = "xmlns";
|
| + String namespaceURI = toString(namespaces[i].uri);
|
| + if (namespaces[i].prefix)
|
| + namespaceQName = "xmlns:" + toString(namespaces[i].prefix);
|
| + newElement->setAttributeNS("http://www.w3.org/2000/xmlns/", namespaceQName, namespaceURI, ec);
|
| + if (ec) // exception setting attributes
|
| + return;
|
| + }
|
| +}
|
| +
|
| +struct _xmlSAX2Attributes {
|
| + const xmlChar* localname;
|
| + const xmlChar* prefix;
|
| + const xmlChar* uri;
|
| + const xmlChar* value;
|
| + const xmlChar* end;
|
| +};
|
| +typedef struct _xmlSAX2Attributes xmlSAX2Attributes;
|
| +
|
| +static inline void handleElementAttributes(Element* newElement, const xmlChar** libxmlAttributes, int nb_attributes, ExceptionCode& ec)
|
| +{
|
| + xmlSAX2Attributes* attributes = reinterpret_cast<xmlSAX2Attributes*>(libxmlAttributes);
|
| + for(int i = 0; i < nb_attributes; i++) {
|
| + String attrLocalName = toString(attributes[i].localname);
|
| + int valueLength = (int) (attributes[i].end - attributes[i].value);
|
| + String attrValue = toString(attributes[i].value, valueLength);
|
| + String attrPrefix = toString(attributes[i].prefix);
|
| + String attrURI = attrPrefix.isEmpty() ? String() : toString(attributes[i].uri);
|
| + String attrQName = attrPrefix.isEmpty() ? attrLocalName : attrPrefix + ":" + attrLocalName;
|
| +
|
| + newElement->setAttributeNS(attrURI, attrQName, attrValue, ec);
|
| + if (ec) // exception setting attributes
|
| + return;
|
| + }
|
| +}
|
| +
|
| +void XMLTokenizer::startElementNs(const xmlChar* xmlLocalName, const xmlChar* xmlPrefix, const xmlChar* xmlURI, int nb_namespaces,
|
| + const xmlChar** libxmlNamespaces, int nb_attributes, int nb_defaulted, const xmlChar** libxmlAttributes)
|
| +{
|
| + if (m_parserStopped)
|
| + return;
|
| +
|
| + if (m_parserPaused) {
|
| + m_pendingCallbacks->appendStartElementNSCallback(xmlLocalName, xmlPrefix, xmlURI, nb_namespaces, libxmlNamespaces,
|
| + nb_attributes, nb_defaulted, libxmlAttributes);
|
| + return;
|
| + }
|
| +
|
| + m_sawFirstElement = true;
|
| +
|
| + exitText();
|
| +
|
| + String localName = toString(xmlLocalName);
|
| + String uri = toString(xmlURI);
|
| + String prefix = toString(xmlPrefix);
|
| +
|
| + if (m_parsingFragment && uri.isNull()) {
|
| + if (!prefix.isNull())
|
| + uri = m_prefixToNamespaceMap.get(prefix);
|
| + else
|
| + uri = m_defaultNamespaceURI;
|
| + }
|
| +
|
| + ExceptionCode ec = 0;
|
| + QualifiedName qName(prefix, localName, uri);
|
| + RefPtr<Element> newElement = m_doc->createElement(qName, true, ec);
|
| + if (!newElement) {
|
| + stopParsing();
|
| + return;
|
| + }
|
| +
|
| + handleElementNamespaces(newElement.get(), libxmlNamespaces, nb_namespaces, ec);
|
| + if (ec) {
|
| + stopParsing();
|
| + return;
|
| + }
|
| +
|
| + ScriptController* jsProxy = m_doc->frame() ? m_doc->frame()->script() : 0;
|
| + if (jsProxy && m_doc->frame()->script()->isEnabled())
|
| + jsProxy->setEventHandlerLineno(lineNumber());
|
| +
|
| + handleElementAttributes(newElement.get(), libxmlAttributes, nb_attributes, ec);
|
| + if (ec) {
|
| + stopParsing();
|
| + return;
|
| + }
|
| +
|
| + if (jsProxy)
|
| + jsProxy->setEventHandlerLineno(0);
|
| +
|
| + newElement->beginParsingChildren();
|
| +
|
| + ScriptElement* scriptElement = toScriptElement(newElement.get());
|
| + if (scriptElement)
|
| + m_scriptStartLine = lineNumber();
|
| +
|
| + if (!m_currentNode->addChild(newElement.get())) {
|
| + stopParsing();
|
| + return;
|
| + }
|
| +
|
| + setCurrentNode(newElement.get());
|
| + if (m_view && !newElement->attached())
|
| + newElement->attach();
|
| +}
|
| +
|
| +void XMLTokenizer::endElementNs()
|
| +{
|
| + if (m_parserStopped)
|
| + return;
|
| +
|
| + if (m_parserPaused) {
|
| + m_pendingCallbacks->appendEndElementNSCallback();
|
| + return;
|
| + }
|
| +
|
| + exitText();
|
| +
|
| + Node* n = m_currentNode;
|
| + RefPtr<Node> parent = n->parentNode();
|
| + n->finishParsingChildren();
|
| +
|
| + if (!n->isElementNode() || !m_view) {
|
| + setCurrentNode(parent.get());
|
| + return;
|
| + }
|
| +
|
| + Element* element = static_cast<Element*>(n);
|
| + ScriptElement* scriptElement = toScriptElement(element);
|
| + if (!scriptElement) {
|
| + setCurrentNode(parent.get());
|
| + return;
|
| + }
|
| +
|
| + // don't load external scripts for standalone documents (for now)
|
| + ASSERT(!m_pendingScript);
|
| + m_requestingScript = true;
|
| +
|
| + String scriptHref = scriptElement->sourceAttributeValue();
|
| + if (!scriptHref.isEmpty()) {
|
| + // we have a src attribute
|
| + String scriptCharset = scriptElement->scriptCharset();
|
| + if ((m_pendingScript = m_doc->docLoader()->requestScript(scriptHref, scriptCharset))) {
|
| + m_scriptElement = element;
|
| + m_pendingScript->addClient(this);
|
| +
|
| + // m_pendingScript will be 0 if script was already loaded and ref() executed it
|
| + if (m_pendingScript)
|
| + pauseParsing();
|
| + } else
|
| + m_scriptElement = 0;
|
| + } else
|
| + m_view->frame()->loader()->executeScript(ScriptSourceCode(scriptElement->scriptContent(), m_doc->url(), m_scriptStartLine));
|
| +
|
| + m_requestingScript = false;
|
| + setCurrentNode(parent.get());
|
| +}
|
| +
|
| +void XMLTokenizer::characters(const xmlChar* s, int len)
|
| +{
|
| + if (m_parserStopped)
|
| + return;
|
| +
|
| + if (m_parserPaused) {
|
| + m_pendingCallbacks->appendCharactersCallback(s, len);
|
| + return;
|
| + }
|
| +
|
| + if (m_currentNode->isTextNode() || enterText())
|
| + m_bufferedText.append(s, len);
|
| +}
|
| +
|
| +void XMLTokenizer::error(ErrorType type, const char* message, va_list args)
|
| +{
|
| + if (m_parserStopped)
|
| + return;
|
| +
|
| +#if PLATFORM(WIN_OS)
|
| + char m[1024];
|
| + vsnprintf(m, sizeof(m) - 1, message, args);
|
| +#else
|
| + char* m;
|
| + vasprintf(&m, message, args);
|
| +#endif
|
| +
|
| + if (m_parserPaused)
|
| + m_pendingCallbacks->appendErrorCallback(type, m, lineNumber(), columnNumber());
|
| + else
|
| + handleError(type, m, lineNumber(), columnNumber());
|
| +
|
| +#if !PLATFORM(WIN_OS)
|
| + free(m);
|
| +#endif
|
| +}
|
| +
|
| +void XMLTokenizer::processingInstruction(const xmlChar* target, const xmlChar* data)
|
| +{
|
| + if (m_parserStopped)
|
| + return;
|
| +
|
| + if (m_parserPaused) {
|
| + m_pendingCallbacks->appendProcessingInstructionCallback(target, data);
|
| + return;
|
| + }
|
| +
|
| + exitText();
|
| +
|
| + // ### handle exceptions
|
| + int exception = 0;
|
| + RefPtr<ProcessingInstruction> pi = m_doc->createProcessingInstruction(
|
| + toString(target), toString(data), exception);
|
| + if (exception)
|
| + return;
|
| +
|
| + pi->setCreatedByParser(true);
|
| +
|
| + if (!m_currentNode->addChild(pi.get()))
|
| + return;
|
| + if (m_view && !pi->attached())
|
| + pi->attach();
|
| +
|
| + pi->finishParsingChildren();
|
| +
|
| +#if ENABLE(XSLT)
|
| + m_sawXSLTransform = !m_sawFirstElement && pi->isXSL();
|
| + if (m_sawXSLTransform && !m_doc->transformSourceDocument())
|
| + stopParsing();
|
| +#endif
|
| +}
|
| +
|
| +void XMLTokenizer::cdataBlock(const xmlChar* s, int len)
|
| +{
|
| + if (m_parserStopped)
|
| + return;
|
| +
|
| + if (m_parserPaused) {
|
| + m_pendingCallbacks->appendCDATABlockCallback(s, len);
|
| + return;
|
| + }
|
| +
|
| + exitText();
|
| +
|
| + RefPtr<Node> newNode = new CDATASection(m_doc, toString(s, len));
|
| + if (!m_currentNode->addChild(newNode.get()))
|
| + return;
|
| + if (m_view && !newNode->attached())
|
| + newNode->attach();
|
| +}
|
| +
|
| +void XMLTokenizer::comment(const xmlChar* s)
|
| +{
|
| + if (m_parserStopped)
|
| + return;
|
| +
|
| + if (m_parserPaused) {
|
| + m_pendingCallbacks->appendCommentCallback(s);
|
| + return;
|
| + }
|
| +
|
| + exitText();
|
| +
|
| + RefPtr<Node> newNode = new Comment(m_doc, toString(s));
|
| + m_currentNode->addChild(newNode.get());
|
| + if (m_view && !newNode->attached())
|
| + newNode->attach();
|
| +}
|
| +
|
| +void XMLTokenizer::startDocument(const xmlChar* version, const xmlChar* encoding, int standalone)
|
| +{
|
| + ExceptionCode ec = 0;
|
| +
|
| + if (version)
|
| + m_doc->setXMLVersion(toString(version), ec);
|
| + m_doc->setXMLStandalone(standalone == 1, ec); // possible values are 0, 1, and -1
|
| + if (encoding)
|
| + m_doc->setXMLEncoding(toString(encoding));
|
| +}
|
| +
|
| +void XMLTokenizer::endDocument()
|
| +{
|
| + exitText();
|
| +}
|
| +
|
| +void XMLTokenizer::internalSubset(const xmlChar* name, const xmlChar* externalID, const xmlChar* systemID)
|
| +{
|
| + if (m_parserStopped)
|
| + return;
|
| +
|
| + if (m_parserPaused) {
|
| + m_pendingCallbacks->appendInternalSubsetCallback(name, externalID, systemID);
|
| + return;
|
| + }
|
| +
|
| + if (m_doc) {
|
| +#if ENABLE(WML)
|
| + String extId = toString(externalID);
|
| + if (isWMLDocument()
|
| + && extId != "-//WAPFORUM//DTD WML 1.3//EN"
|
| + && extId != "-//WAPFORUM//DTD WML 1.2//EN"
|
| + && extId != "-//WAPFORUM//DTD WML 1.1//EN"
|
| + && extId != "-//WAPFORUM//DTD WML 1.0//EN")
|
| + handleError(fatal, "Invalid DTD Public ID", lineNumber(), columnNumber());
|
| +#endif
|
| +
|
| + m_doc->addChild(DocumentType::create(m_doc, toString(name), toString(externalID), toString(systemID)));
|
| + }
|
| +}
|
| +
|
| +static inline XMLTokenizer* getTokenizer(void* closure)
|
| +{
|
| + xmlParserCtxtPtr ctxt = static_cast<xmlParserCtxtPtr>(closure);
|
| + return static_cast<XMLTokenizer*>(ctxt->_private);
|
| +}
|
| +
|
| +// This is a hack around http://bugzilla.gnome.org/show_bug.cgi?id=159219
|
| +// Otherwise libxml seems to call all the SAX callbacks twice for any replaced entity.
|
| +static inline bool hackAroundLibXMLEntityBug(void* closure)
|
| +{
|
| +#if LIBXML_VERSION >= 20627
|
| + UNUSED_PARAM(closure);
|
| +
|
| + // This bug has been fixed in libxml 2.6.27.
|
| + return false;
|
| +#else
|
| + return static_cast<xmlParserCtxtPtr>(closure)->node;
|
| +#endif
|
| +}
|
| +
|
| +static void startElementNsHandler(void* closure, const xmlChar* localname, const xmlChar* prefix, const xmlChar* uri, int nb_namespaces, const xmlChar** namespaces, int nb_attributes, int nb_defaulted, const xmlChar** libxmlAttributes)
|
| +{
|
| + if (hackAroundLibXMLEntityBug(closure))
|
| + return;
|
| +
|
| + getTokenizer(closure)->startElementNs(localname, prefix, uri, nb_namespaces, namespaces, nb_attributes, nb_defaulted, libxmlAttributes);
|
| +}
|
| +
|
| +static void endElementNsHandler(void* closure, const xmlChar*, const xmlChar*, const xmlChar*)
|
| +{
|
| + if (hackAroundLibXMLEntityBug(closure))
|
| + return;
|
| +
|
| + getTokenizer(closure)->endElementNs();
|
| +}
|
| +
|
| +static void charactersHandler(void* closure, const xmlChar* s, int len)
|
| +{
|
| + if (hackAroundLibXMLEntityBug(closure))
|
| + return;
|
| +
|
| + getTokenizer(closure)->characters(s, len);
|
| +}
|
| +
|
| +static void processingInstructionHandler(void* closure, const xmlChar* target, const xmlChar* data)
|
| +{
|
| + if (hackAroundLibXMLEntityBug(closure))
|
| + return;
|
| +
|
| + getTokenizer(closure)->processingInstruction(target, data);
|
| +}
|
| +
|
| +static void cdataBlockHandler(void* closure, const xmlChar* s, int len)
|
| +{
|
| + if (hackAroundLibXMLEntityBug(closure))
|
| + return;
|
| +
|
| + getTokenizer(closure)->cdataBlock(s, len);
|
| +}
|
| +
|
| +static void commentHandler(void* closure, const xmlChar* comment)
|
| +{
|
| + if (hackAroundLibXMLEntityBug(closure))
|
| + return;
|
| +
|
| + getTokenizer(closure)->comment(comment);
|
| +}
|
| +
|
| +WTF_ATTRIBUTE_PRINTF(2, 3)
|
| +static void warningHandler(void* closure, const char* message, ...)
|
| +{
|
| + va_list args;
|
| + va_start(args, message);
|
| + getTokenizer(closure)->error(XMLTokenizer::warning, message, args);
|
| + va_end(args);
|
| +}
|
| +
|
| +WTF_ATTRIBUTE_PRINTF(2, 3)
|
| +static void fatalErrorHandler(void* closure, const char* message, ...)
|
| +{
|
| + va_list args;
|
| + va_start(args, message);
|
| + getTokenizer(closure)->error(XMLTokenizer::fatal, message, args);
|
| + va_end(args);
|
| +}
|
| +
|
| +WTF_ATTRIBUTE_PRINTF(2, 3)
|
| +static void normalErrorHandler(void* closure, const char* message, ...)
|
| +{
|
| + va_list args;
|
| + va_start(args, message);
|
| + getTokenizer(closure)->error(XMLTokenizer::nonFatal, message, args);
|
| + va_end(args);
|
| +}
|
| +
|
| +// Using a global variable entity and marking it XML_INTERNAL_PREDEFINED_ENTITY is
|
| +// a hack to avoid malloc/free. Using a global variable like this could cause trouble
|
| +// if libxml implementation details were to change
|
| +static xmlChar sharedXHTMLEntityResult[5] = {0,0,0,0,0};
|
| +static xmlEntity sharedXHTMLEntity = {
|
| + 0, XML_ENTITY_DECL, 0, 0, 0, 0, 0, 0, 0,
|
| + sharedXHTMLEntityResult, sharedXHTMLEntityResult, 0,
|
| + XML_INTERNAL_PREDEFINED_ENTITY, 0, 0, 0, 0, 0,
|
| +#if LIBXML_VERSION >= 20627
|
| + // xmlEntity gained an extra member in 2.6.27.
|
| + 1
|
| +#endif
|
| +};
|
| +
|
| +static xmlEntityPtr getXHTMLEntity(const xmlChar* name)
|
| +{
|
| + UChar c = decodeNamedEntity(reinterpret_cast<const char*>(name));
|
| + if (!c)
|
| + return 0;
|
| +
|
| + CString value = String(&c, 1).utf8();
|
| + ASSERT(value.length() < 5);
|
| + sharedXHTMLEntity.length = value.length();
|
| + sharedXHTMLEntity.name = name;
|
| + memcpy(sharedXHTMLEntityResult, value.data(), sharedXHTMLEntity.length + 1);
|
| +
|
| + return &sharedXHTMLEntity;
|
| +}
|
| +
|
| +static xmlEntityPtr getEntityHandler(void* closure, const xmlChar* name)
|
| +{
|
| + xmlParserCtxtPtr ctxt = static_cast<xmlParserCtxtPtr>(closure);
|
| + xmlEntityPtr ent = xmlGetPredefinedEntity(name);
|
| + if (ent) {
|
| + ent->etype = XML_INTERNAL_PREDEFINED_ENTITY;
|
| + return ent;
|
| + }
|
| +
|
| + ent = xmlGetDocEntity(ctxt->myDoc, name);
|
| + if (!ent && (getTokenizer(closure)->isXHTMLDocument()
|
| +#if ENABLE(WML)
|
| + || getTokenizer(closure)->isWMLDocument()
|
| +#endif
|
| + )) {
|
| + ent = getXHTMLEntity(name);
|
| + if (ent)
|
| + ent->etype = XML_INTERNAL_GENERAL_ENTITY;
|
| + }
|
| +
|
| + return ent;
|
| +}
|
| +
|
| +static void startDocumentHandler(void* closure)
|
| +{
|
| + xmlParserCtxt* ctxt = static_cast<xmlParserCtxt*>(closure);
|
| + getTokenizer(closure)->startDocument(ctxt->version, ctxt->encoding, ctxt->standalone);
|
| + xmlSAX2StartDocument(closure);
|
| +}
|
| +
|
| +static void endDocumentHandler(void* closure)
|
| +{
|
| + getTokenizer(closure)->endDocument();
|
| + xmlSAX2EndDocument(closure);
|
| +}
|
| +
|
| +static void internalSubsetHandler(void* closure, const xmlChar* name, const xmlChar* externalID, const xmlChar* systemID)
|
| +{
|
| + getTokenizer(closure)->internalSubset(name, externalID, systemID);
|
| + xmlSAX2InternalSubset(closure, name, externalID, systemID);
|
| +}
|
| +
|
| +static void externalSubsetHandler(void* closure, const xmlChar*, const xmlChar* externalId, const xmlChar*)
|
| +{
|
| + String extId = toString(externalId);
|
| + if ((extId == "-//W3C//DTD XHTML 1.0 Transitional//EN")
|
| + || (extId == "-//W3C//DTD XHTML 1.1//EN")
|
| + || (extId == "-//W3C//DTD XHTML 1.0 Strict//EN")
|
| + || (extId == "-//W3C//DTD XHTML 1.0 Frameset//EN")
|
| + || (extId == "-//W3C//DTD XHTML Basic 1.0//EN")
|
| + || (extId == "-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN")
|
| + || (extId == "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN")
|
| + || (extId == "-//WAPFORUM//DTD XHTML Mobile 1.0//EN"))
|
| + getTokenizer(closure)->setIsXHTMLDocument(true); // controls if we replace entities or not.
|
| +}
|
| +
|
| +static void ignorableWhitespaceHandler(void*, const xmlChar*, int)
|
| +{
|
| + // nothing to do, but we need this to work around a crasher
|
| + // http://bugzilla.gnome.org/show_bug.cgi?id=172255
|
| + // http://bugs.webkit.org/show_bug.cgi?id=5792
|
| +}
|
| +
|
| +void XMLTokenizer::initializeParserContext(const char* chunk)
|
| +{
|
| + xmlSAXHandler sax;
|
| + memset(&sax, 0, sizeof(sax));
|
| +
|
| + sax.error = normalErrorHandler;
|
| + sax.fatalError = fatalErrorHandler;
|
| + sax.characters = charactersHandler;
|
| + sax.processingInstruction = processingInstructionHandler;
|
| + sax.cdataBlock = cdataBlockHandler;
|
| + sax.comment = commentHandler;
|
| + sax.warning = warningHandler;
|
| + sax.startElementNs = startElementNsHandler;
|
| + sax.endElementNs = endElementNsHandler;
|
| + sax.getEntity = getEntityHandler;
|
| + sax.startDocument = startDocumentHandler;
|
| + sax.endDocument = endDocumentHandler;
|
| + sax.internalSubset = internalSubsetHandler;
|
| + sax.externalSubset = externalSubsetHandler;
|
| + sax.ignorableWhitespace = ignorableWhitespaceHandler;
|
| + sax.entityDecl = xmlSAX2EntityDecl;
|
| + sax.initialized = XML_SAX2_MAGIC;
|
| + m_parserStopped = false;
|
| + m_sawError = false;
|
| + m_sawXSLTransform = false;
|
| + m_sawFirstElement = false;
|
| +
|
| + if (m_parsingFragment)
|
| + m_context = createMemoryParser(&sax, this, chunk);
|
| + else
|
| + m_context = createStringParser(&sax, this);
|
| +}
|
| +
|
| +void XMLTokenizer::doEnd()
|
| +{
|
| +#if ENABLE(XSLT)
|
| + if (m_sawXSLTransform) {
|
| + m_doc->setTransformSource(xmlDocPtrForString(m_doc->docLoader(), m_originalSourceForTransform, m_doc->url().string()));
|
| +
|
| + m_doc->setParsing(false); // Make the doc think it's done, so it will apply xsl sheets.
|
| + m_doc->updateStyleSelector();
|
| + m_doc->setParsing(true);
|
| + m_parserStopped = true;
|
| + }
|
| +#endif
|
| +
|
| + if (m_context) {
|
| + // Tell libxml we're done.
|
| + xmlParseChunk(m_context, 0, 0, 1);
|
| +
|
| + if (m_context->myDoc)
|
| + xmlFreeDoc(m_context->myDoc);
|
| + xmlFreeParserCtxt(m_context);
|
| + m_context = 0;
|
| + }
|
| +}
|
| +
|
| +#if ENABLE(XSLT)
|
| +void* xmlDocPtrForString(DocLoader* docLoader, const String& source, const String& url)
|
| +{
|
| + if (source.isEmpty())
|
| + return 0;
|
| +
|
| + // Parse in a single chunk into an xmlDocPtr
|
| + // FIXME: Hook up error handlers so that a failure to parse the main document results in
|
| + // good error messages.
|
| + const UChar BOM = 0xFEFF;
|
| + const unsigned char BOMHighByte = *reinterpret_cast<const unsigned char*>(&BOM);
|
| +
|
| + xmlGenericErrorFunc oldErrorFunc = xmlGenericError;
|
| + void* oldErrorContext = xmlGenericErrorContext;
|
| +
|
| + setLoaderForLibXMLCallbacks(docLoader);
|
| + xmlSetGenericErrorFunc(0, errorFunc);
|
| +
|
| + xmlDocPtr sourceDoc = xmlReadMemory(reinterpret_cast<const char*>(source.characters()),
|
| + source.length() * sizeof(UChar),
|
| + url.latin1().data(),
|
| + BOMHighByte == 0xFF ? "UTF-16LE" : "UTF-16BE",
|
| + XSLT_PARSE_OPTIONS);
|
| +
|
| + setLoaderForLibXMLCallbacks(0);
|
| + xmlSetGenericErrorFunc(oldErrorContext, oldErrorFunc);
|
| +
|
| + return sourceDoc;
|
| +}
|
| +#endif
|
| +
|
| +int XMLTokenizer::lineNumber() const
|
| +{
|
| + return m_context ? m_context->input->line : 1;
|
| +}
|
| +
|
| +int XMLTokenizer::columnNumber() const
|
| +{
|
| + return m_context ? m_context->input->col : 1;
|
| +}
|
| +
|
| +void XMLTokenizer::stopParsing()
|
| +{
|
| + Tokenizer::stopParsing();
|
| + xmlStopParser(m_context);
|
| +}
|
| +
|
| +void XMLTokenizer::resumeParsing()
|
| +{
|
| + ASSERT(m_parserPaused);
|
| +
|
| + m_parserPaused = false;
|
| +
|
| + // First, execute any pending callbacks
|
| + while (!m_pendingCallbacks->isEmpty()) {
|
| + m_pendingCallbacks->callAndRemoveFirstCallback(this);
|
| +
|
| + // A callback paused the parser
|
| + if (m_parserPaused)
|
| + return;
|
| + }
|
| +
|
| + // Then, write any pending data
|
| + SegmentedString rest = m_pendingSrc;
|
| + m_pendingSrc.clear();
|
| + write(rest, false);
|
| +
|
| + // Finally, if finish() has been called and write() didn't result
|
| + // in any further callbacks being queued, call end()
|
| + if (m_finishCalled && m_pendingCallbacks->isEmpty())
|
| + end();
|
| +}
|
| +
|
| +bool parseXMLDocumentFragment(const String& chunk, DocumentFragment* fragment, Element* parent)
|
| +{
|
| + if (!chunk.length())
|
| + return true;
|
| +
|
| + XMLTokenizer tokenizer(fragment, parent);
|
| +
|
| + tokenizer.initializeParserContext(chunk.utf8().data());
|
| +
|
| + xmlParseContent(tokenizer.m_context);
|
| +
|
| + tokenizer.endDocument();
|
| +
|
| + // Check if all the chunk has been processed.
|
| + long bytesProcessed = xmlByteConsumed(tokenizer.m_context);
|
| + if (bytesProcessed == -1 || ((unsigned long)bytesProcessed) == sizeof(UChar) * chunk.length())
|
| + return false;
|
| +
|
| + // No error if the chunk is well formed or it is not but we have no error.
|
| + return tokenizer.m_context->wellFormed || xmlCtxtGetLastError(tokenizer.m_context) == 0;
|
| +}
|
| +
|
| +// --------------------------------
|
| +
|
| +struct AttributeParseState {
|
| + HashMap<String, String> attributes;
|
| + bool gotAttributes;
|
| +};
|
| +
|
| +static void attributesStartElementNsHandler(void* closure, const xmlChar* xmlLocalName, const xmlChar* /*xmlPrefix*/,
|
| + const xmlChar* /*xmlURI*/, int /*nb_namespaces*/, const xmlChar** /*namespaces*/,
|
| + int nb_attributes, int /*nb_defaulted*/, const xmlChar** libxmlAttributes)
|
| +{
|
| + if (strcmp(reinterpret_cast<const char*>(xmlLocalName), "attrs") != 0)
|
| + return;
|
| +
|
| + xmlParserCtxtPtr ctxt = static_cast<xmlParserCtxtPtr>(closure);
|
| + AttributeParseState* state = static_cast<AttributeParseState*>(ctxt->_private);
|
| +
|
| + state->gotAttributes = true;
|
| +
|
| + xmlSAX2Attributes* attributes = reinterpret_cast<xmlSAX2Attributes*>(libxmlAttributes);
|
| + for(int i = 0; i < nb_attributes; i++) {
|
| + String attrLocalName = toString(attributes[i].localname);
|
| + int valueLength = (int) (attributes[i].end - attributes[i].value);
|
| + String attrValue = toString(attributes[i].value, valueLength);
|
| + String attrPrefix = toString(attributes[i].prefix);
|
| + String attrQName = attrPrefix.isEmpty() ? attrLocalName : attrPrefix + ":" + attrLocalName;
|
| +
|
| + state->attributes.set(attrQName, attrValue);
|
| + }
|
| +}
|
| +
|
| +HashMap<String, String> parseAttributes(const String& string, bool& attrsOK)
|
| +{
|
| + AttributeParseState state;
|
| + state.gotAttributes = false;
|
| +
|
| + xmlSAXHandler sax;
|
| + memset(&sax, 0, sizeof(sax));
|
| + sax.startElementNs = attributesStartElementNsHandler;
|
| + sax.initialized = XML_SAX2_MAGIC;
|
| + xmlParserCtxtPtr parser = createStringParser(&sax, &state);
|
| + String parseString = "<?xml version=\"1.0\"?><attrs " + string + " />";
|
| + xmlParseChunk(parser, reinterpret_cast<const char*>(parseString.characters()), parseString.length() * sizeof(UChar), 1);
|
| + if (parser->myDoc)
|
| + xmlFreeDoc(parser->myDoc);
|
| + xmlFreeParserCtxt(parser);
|
| + attrsOK = state.gotAttributes;
|
| + return state.attributes;
|
| +}
|
| +
|
| +}
|
| +
|
| +
|
|
|
Chromium Code Reviews
Issue 21165:
Revert the merge. Mac build is mysteriously broken. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/