| /* |
| * 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, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) |
| * Copyright (C) 2010 Patrick Gansterer <paroga@paroga.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 "XMLDocumentParser.h" |
| |
| #include "CDATASection.h" |
| #include "CachedScript.h" |
| #include "Comment.h" |
| #include "CachedResourceLoader.h" |
| #include "Document.h" |
| #include "DocumentFragment.h" |
| #include "DocumentType.h" |
| #include "Frame.h" |
| #include "FrameLoader.h" |
| #include "FrameView.h" |
| #include "HTMLEntityParser.h" |
| #include "HTMLHtmlElement.h" |
| #include "HTMLLinkElement.h" |
| #include "HTMLNames.h" |
| #include "HTMLStyleElement.h" |
| #include "ProcessingInstruction.h" |
| #include "ResourceError.h" |
| #include "ResourceHandle.h" |
| #include "ResourceRequest.h" |
| #include "ResourceResponse.h" |
| #include "ScriptElement.h" |
| #include "ScriptSourceCode.h" |
| #include "ScriptValue.h" |
| #include "TextResourceDecoder.h" |
| #include "TransformSource.h" |
| #include "XMLNSNames.h" |
| #include "XMLDocumentParserScope.h" |
| #include <libxml/parser.h> |
| #include <libxml/parserInternals.h> |
| #include <wtf/text/CString.h> |
| #include <wtf/StringExtras.h> |
| #include <wtf/Threading.h> |
| #include <wtf/UnusedParam.h> |
| #include <wtf/Vector.h> |
| |
| #if ENABLE(XSLT) |
| #include "XMLTreeViewer.h" |
| #include <libxslt/xslt.h> |
| #endif |
| |
| #if ENABLE(XHTMLMP) |
| #include "HTMLScriptElement.h" |
| #endif |
| |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| class PendingCallbacks { |
| WTF_MAKE_NONCOPYABLE(PendingCallbacks); |
| public: |
| PendingCallbacks() { } |
| ~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(XMLDocumentParser::ErrorType type, const xmlChar* message, int lineNumber, int columnNumber) |
| { |
| PendingErrorCallback* callback = new PendingErrorCallback; |
| |
| callback->message = xmlStrdup(message); |
| callback->type = type; |
| callback->lineNumber = lineNumber; |
| callback->columnNumber = columnNumber; |
| |
| m_callbacks.append(callback); |
| } |
| |
| void callAndRemoveFirstCallback(XMLDocumentParser* parser) |
| { |
| OwnPtr<PendingCallback> callback(m_callbacks.takeFirst()); |
| callback->call(parser); |
| } |
| |
| bool isEmpty() const { return m_callbacks.isEmpty(); } |
| |
| private: |
| struct PendingCallback { |
| virtual ~PendingCallback() { } |
| virtual void call(XMLDocumentParser* parser) = 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(XMLDocumentParser* parser) |
| { |
| parser->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(XMLDocumentParser* parser) |
| { |
| parser->endElementNs(); |
| } |
| }; |
| |
| struct PendingCharactersCallback : public PendingCallback { |
| virtual ~PendingCharactersCallback() |
| { |
| xmlFree(s); |
| } |
| |
| virtual void call(XMLDocumentParser* parser) |
| { |
| parser->characters(s, len); |
| } |
| |
| xmlChar* s; |
| int len; |
| }; |
| |
| struct PendingProcessingInstructionCallback : public PendingCallback { |
| virtual ~PendingProcessingInstructionCallback() |
| { |
| xmlFree(target); |
| xmlFree(data); |
| } |
| |
| virtual void call(XMLDocumentParser* parser) |
| { |
| parser->processingInstruction(target, data); |
| } |
| |
| xmlChar* target; |
| xmlChar* data; |
| }; |
| |
| struct PendingCDATABlockCallback : public PendingCallback { |
| virtual ~PendingCDATABlockCallback() |
| { |
| xmlFree(s); |
| } |
| |
| virtual void call(XMLDocumentParser* parser) |
| { |
| parser->cdataBlock(s, len); |
| } |
| |
| xmlChar* s; |
| int len; |
| }; |
| |
| struct PendingCommentCallback : public PendingCallback { |
| virtual ~PendingCommentCallback() |
| { |
| xmlFree(s); |
| } |
| |
| virtual void call(XMLDocumentParser* parser) |
| { |
| parser->comment(s); |
| } |
| |
| xmlChar* s; |
| }; |
| |
| struct PendingInternalSubsetCallback : public PendingCallback { |
| virtual ~PendingInternalSubsetCallback() |
| { |
| xmlFree(name); |
| xmlFree(externalID); |
| xmlFree(systemID); |
| } |
| |
| virtual void call(XMLDocumentParser* parser) |
| { |
| parser->internalSubset(name, externalID, systemID); |
| } |
| |
| xmlChar* name; |
| xmlChar* externalID; |
| xmlChar* systemID; |
| }; |
| |
| struct PendingErrorCallback: public PendingCallback { |
| virtual ~PendingErrorCallback() |
| { |
| xmlFree(message); |
| } |
| |
| virtual void call(XMLDocumentParser* parser) |
| { |
| parser->handleError(type, reinterpret_cast<char*>(message), lineNumber, columnNumber); |
| } |
| |
| XMLDocumentParser::ErrorType type; |
| xmlChar* message; |
| int lineNumber; |
| int columnNumber; |
| }; |
| |
| Deque<PendingCallback*> m_callbacks; |
| }; |
| // -------------------------------- |
| |
| static int globalDescriptor = 0; |
| static ThreadIdentifier libxmlLoaderThread = 0; |
| |
| static int matchFunc(const char*) |
| { |
| // Only match loads initiated due to uses of libxml2 from within XMLDocumentParser to avoid |
| // interfering with client applications that also use libxml2. http://bugs.webkit.org/show_bug.cgi?id=17353 |
| return XMLDocumentParserScope::currentCachedResourceLoader && 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 void switchToUTF16(xmlParserCtxtPtr ctxt) |
| { |
| // 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(ctxt, BOMHighByte == 0xFF ? XML_CHAR_ENCODING_UTF16LE : XML_CHAR_ENCODING_UTF16BE); |
| } |
| |
| 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 (!XMLDocumentParserScope::currentCachedResourceLoader->document()->securityOrigin()->canRequest(url)) { |
| XMLDocumentParserScope::currentCachedResourceLoader->printAccessDeniedMessage(url); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static void* openFunc(const char* uri) |
| { |
| ASSERT(XMLDocumentParserScope::currentCachedResourceLoader); |
| ASSERT(currentThread() == libxmlLoaderThread); |
| |
| KURL url(KURL(), uri); |
| |
| if (!shouldAllowExternalLoad(url)) |
| return &globalDescriptor; |
| |
| ResourceError error; |
| ResourceResponse response; |
| Vector<char> data; |
| |
| |
| { |
| CachedResourceLoader* cachedResourceLoader = XMLDocumentParserScope::currentCachedResourceLoader; |
| XMLDocumentParserScope scope(0); |
| // FIXME: We should restore the original global error handler as well. |
| |
| if (cachedResourceLoader->frame()) |
| cachedResourceLoader->frame()->loader()->loadResourceSynchronously(url, AllowStoredCredentials, error, response, data); |
| } |
| |
| // 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 |
| |
| static bool didInit = false; |
| |
| PassRefPtr<XMLParserContext> XMLParserContext::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; |
| switchToUTF16(parser); |
| |
| return adoptRef(new XMLParserContext(parser)); |
| } |
| |
| |
| // Chunk should be encoded in UTF-8 |
| PassRefPtr<XMLParserContext> XMLParserContext::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 adoptRef(new XMLParserContext(parser)); |
| } |
| |
| // -------------------------------- |
| |
| bool XMLDocumentParser::supportsXMLVersion(const String& version) |
| { |
| return version == "1.0"; |
| } |
| |
| XMLDocumentParser::XMLDocumentParser(Document* document, FrameView* frameView) |
| : ScriptableDocumentParser(document) |
| , m_view(frameView) |
| , m_context(0) |
| , m_pendingCallbacks(new PendingCallbacks) |
| , m_currentNode(document) |
| , m_sawError(false) |
| , m_sawCSS(false) |
| , m_sawXSLTransform(false) |
| , m_sawFirstElement(false) |
| , m_isXHTMLDocument(false) |
| #if ENABLE(XHTMLMP) |
| , m_isXHTMLMPDocument(false) |
| , m_hasDocTypeDeclaration(false) |
| #endif |
| , m_parserPaused(false) |
| , m_requestingScript(false) |
| , m_finishCalled(false) |
| , m_errorCount(0) |
| , m_lastErrorPosition(TextPosition1::belowRangePosition()) |
| , m_pendingScript(0) |
| , m_scriptStartPosition(TextPosition1::belowRangePosition()) |
| , m_parsingFragment(false) |
| , m_scriptingPermission(FragmentScriptingAllowed) |
| { |
| } |
| |
| XMLDocumentParser::XMLDocumentParser(DocumentFragment* fragment, Element* parentElement, FragmentScriptingPermission scriptingPermission) |
| : ScriptableDocumentParser(fragment->document()) |
| , m_view(0) |
| , m_context(0) |
| , m_pendingCallbacks(new PendingCallbacks) |
| , m_currentNode(fragment) |
| , m_sawError(false) |
| , m_sawCSS(false) |
| , m_sawXSLTransform(false) |
| , m_sawFirstElement(false) |
| , m_isXHTMLDocument(false) |
| #if ENABLE(XHTMLMP) |
| , m_isXHTMLMPDocument(false) |
| , m_hasDocTypeDeclaration(false) |
| #endif |
| , m_parserPaused(false) |
| , m_requestingScript(false) |
| , m_finishCalled(false) |
| , m_errorCount(0) |
| , m_lastErrorPosition(TextPosition1::belowRangePosition()) |
| , m_pendingScript(0) |
| , m_scriptStartPosition(TextPosition1::belowRangePosition()) |
| , m_parsingFragment(true) |
| , m_scriptingPermission(scriptingPermission) |
| { |
| fragment->ref(); |
| |
| // Add namespaces based on the parent node |
| Vector<Element*> elemStack; |
| while (parentElement) { |
| elemStack.append(parentElement); |
| |
| ContainerNode* 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 (NamedNodeMap* attrs = element->attributes()) { |
| for (unsigned i = 0; i < attrs->length(); i++) { |
| Attribute* attr = attrs->attributeItem(i); |
| if (attr->localName() == xmlnsAtom) |
| m_defaultNamespaceURI = attr->value(); |
| else if (attr->prefix() == xmlnsAtom) |
| 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(); |
| } |
| |
| XMLParserContext::~XMLParserContext() |
| { |
| if (m_context->myDoc) |
| xmlFreeDoc(m_context->myDoc); |
| xmlFreeParserCtxt(m_context); |
| } |
| |
| XMLDocumentParser::~XMLDocumentParser() |
| { |
| // The XMLDocumentParser will always be detached before being destroyed. |
| ASSERT(m_currentNodeStack.isEmpty()); |
| ASSERT(!m_currentNode); |
| |
| // FIXME: m_pendingScript handling should be moved into XMLDocumentParser.cpp! |
| if (m_pendingScript) |
| m_pendingScript->removeClient(this); |
| } |
| |
| void XMLDocumentParser::doWrite(const String& parseString) |
| { |
| ASSERT(!isDetached()); |
| if (!m_context) |
| initializeParserContext(); |
| |
| // Protect the libxml context from deletion during a callback |
| RefPtr<XMLParserContext> context = m_context; |
| |
| // libXML throws an error if you try to switch the encoding for an empty string. |
| if (parseString.length()) { |
| // JavaScript may cause the parser to detach during xmlParseChunk |
| // keep this alive until this function is done. |
| RefPtr<XMLDocumentParser> protect(this); |
| |
| switchToUTF16(context->context()); |
| XMLDocumentParserScope scope(document()->cachedResourceLoader()); |
| xmlParseChunk(context->context(), reinterpret_cast<const char*>(parseString.characters()), sizeof(UChar) * parseString.length(), 0); |
| |
| // JavaScript (which may be run under the xmlParseChunk callstack) may |
| // cause the parser to be stopped or detached. |
| if (isStopped()) |
| return; |
| } |
| |
| // FIXME: Why is this here? And why is it after we process the passed source? |
| if (document()->decoder() && document()->decoder()->sawError()) { |
| // If the decoder saw an error, report it as fatal (stops parsing) |
| handleError(fatal, "Encoding error", context->context()->input->line, context->context()->input->col); |
| } |
| } |
| |
| static inline String toString(const xmlChar* string, size_t size) |
| { |
| return String::fromUTF8(reinterpret_cast<const char*>(string), size); |
| } |
| |
| static inline String toString(const xmlChar* string) |
| { |
| return String::fromUTF8(reinterpret_cast<const char*>(string)); |
| } |
| |
| static inline AtomicString toAtomicString(const xmlChar* string, size_t size) |
| { |
| return AtomicString::fromUTF8(reinterpret_cast<const char*>(string), size); |
| } |
| |
| static inline AtomicString toAtomicString(const xmlChar* string) |
| { |
| return AtomicString::fromUTF8(reinterpret_cast<const char*>(string)); |
| } |
| |
| 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, FragmentScriptingPermission scriptingPermission) |
| { |
| xmlSAX2Namespace* namespaces = reinterpret_cast<xmlSAX2Namespace*>(libxmlNamespaces); |
| for (int i = 0; i < nb_namespaces; i++) { |
| AtomicString namespaceQName = xmlnsAtom; |
| AtomicString namespaceURI = toAtomicString(namespaces[i].uri); |
| if (namespaces[i].prefix) |
| namespaceQName = "xmlns:" + toString(namespaces[i].prefix); |
| newElement->setAttributeNS(XMLNSNames::xmlnsNamespaceURI, namespaceQName, namespaceURI, ec, scriptingPermission); |
| 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, FragmentScriptingPermission scriptingPermission) |
| { |
| xmlSAX2Attributes* attributes = reinterpret_cast<xmlSAX2Attributes*>(libxmlAttributes); |
| for (int i = 0; i < nb_attributes; i++) { |
| int valueLength = static_cast<int>(attributes[i].end - attributes[i].value); |
| AtomicString attrValue = toAtomicString(attributes[i].value, valueLength); |
| String attrPrefix = toString(attributes[i].prefix); |
| AtomicString attrURI = attrPrefix.isEmpty() ? AtomicString() : toAtomicString(attributes[i].uri); |
| AtomicString attrQName = attrPrefix.isEmpty() ? toAtomicString(attributes[i].localname) : AtomicString(attrPrefix + ":" + toString(attributes[i].localname)); |
| |
| newElement->setAttributeNS(attrURI, attrQName, attrValue, ec, scriptingPermission); |
| if (ec) // exception setting attributes |
| return; |
| } |
| } |
| |
| void XMLDocumentParser::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 (isStopped()) |
| return; |
| |
| if (m_parserPaused) { |
| m_pendingCallbacks->appendStartElementNSCallback(xmlLocalName, xmlPrefix, xmlURI, nb_namespaces, libxmlNamespaces, |
| nb_attributes, nb_defaulted, libxmlAttributes); |
| return; |
| } |
| |
| #if ENABLE(XHTMLMP) |
| // check if the DOCTYPE Declaration of XHTMLMP document exists |
| if (!m_hasDocTypeDeclaration && document()->isXHTMLMPDocument()) { |
| handleError(fatal, "DOCTYPE declaration lost.", lineNumber(), columnNumber()); |
| return; |
| } |
| #endif |
| |
| exitText(); |
| |
| AtomicString localName = toAtomicString(xmlLocalName); |
| AtomicString uri = toAtomicString(xmlURI); |
| AtomicString prefix = toAtomicString(xmlPrefix); |
| |
| if (m_parsingFragment && uri.isNull()) { |
| if (!prefix.isNull()) |
| uri = m_prefixToNamespaceMap.get(prefix); |
| else |
| uri = m_defaultNamespaceURI; |
| } |
| |
| #if ENABLE(XHTMLMP) |
| if (!m_sawFirstElement && isXHTMLMPDocument()) { |
| // As per the section 7.1 of OMA-WAP-XHTMLMP-V1_1-20061020-A.pdf, |
| // we should make sure that the root element MUST be 'html' and |
| // ensure the name of the default namespace on the root elment 'html' |
| // MUST be 'http://www.w3.org/1999/xhtml' |
| if (localName != HTMLNames::htmlTag.localName()) { |
| handleError(fatal, "XHTMLMP document expects 'html' as root element.", lineNumber(), columnNumber()); |
| return; |
| } |
| |
| if (uri.isNull()) { |
| m_defaultNamespaceURI = HTMLNames::xhtmlNamespaceURI; |
| uri = m_defaultNamespaceURI; |
| } |
| } |
| #endif |
| |
| bool isFirstElement = !m_sawFirstElement; |
| m_sawFirstElement = true; |
| |
| QualifiedName qName(prefix, localName, uri); |
| RefPtr<Element> newElement = document()->createElement(qName, true); |
| if (!newElement) { |
| stopParsing(); |
| return; |
| } |
| |
| ExceptionCode ec = 0; |
| handleElementNamespaces(newElement.get(), libxmlNamespaces, nb_namespaces, ec, m_scriptingPermission); |
| if (ec) { |
| stopParsing(); |
| return; |
| } |
| |
| handleElementAttributes(newElement.get(), libxmlAttributes, nb_attributes, ec, m_scriptingPermission); |
| if (ec) { |
| stopParsing(); |
| return; |
| } |
| |
| newElement->beginParsingChildren(); |
| |
| ScriptElement* scriptElement = toScriptElement(newElement.get()); |
| if (scriptElement) |
| m_scriptStartPosition = textPositionOneBased(); |
| |
| m_currentNode->deprecatedParserAddChild(newElement.get()); |
| |
| pushCurrentNode(newElement.get()); |
| if (m_view && !newElement->attached()) |
| newElement->attach(); |
| |
| #if ENABLE(OFFLINE_WEB_APPLICATIONS) |
| if (newElement->hasTagName(HTMLNames::htmlTag)) |
| static_cast<HTMLHtmlElement*>(newElement.get())->insertedByParser(); |
| #endif |
| |
| if (!m_parsingFragment && isFirstElement && document()->frame()) |
| document()->frame()->loader()->dispatchDocumentElementAvailable(); |
| } |
| |
| void XMLDocumentParser::endElementNs() |
| { |
| if (isStopped()) |
| return; |
| |
| if (m_parserPaused) { |
| m_pendingCallbacks->appendEndElementNSCallback(); |
| return; |
| } |
| |
| // JavaScript can detach the parser. Make sure this is not released |
| // before the end of this method. |
| RefPtr<XMLDocumentParser> protect(this); |
| |
| exitText(); |
| |
| RefPtr<Node> n = m_currentNode; |
| n->finishParsingChildren(); |
| |
| if (m_scriptingPermission == FragmentScriptingNotAllowed && n->isElementNode() && toScriptElement(static_cast<Element*>(n.get()))) { |
| popCurrentNode(); |
| ExceptionCode ec; |
| n->remove(ec); |
| return; |
| } |
| |
| if (!n->isElementNode() || !m_view) { |
| popCurrentNode(); |
| return; |
| } |
| |
| Element* element = static_cast<Element*>(n.get()); |
| |
| // The element's parent may have already been removed from document. |
| // Parsing continues in this case, but scripts aren't executed. |
| if (!element->inDocument()) { |
| popCurrentNode(); |
| return; |
| } |
| |
| ScriptElement* scriptElement = toScriptElement(element); |
| if (!scriptElement) { |
| popCurrentNode(); |
| return; |
| } |
| |
| // Don't load external scripts for standalone documents (for now). |
| ASSERT(!m_pendingScript); |
| m_requestingScript = true; |
| |
| bool successfullyPrepared = scriptElement->prepareScript(m_scriptStartPosition, ScriptElement::AllowLegacyTypeInTypeAttribute); |
| if (!successfullyPrepared) { |
| #if ENABLE(XHTMLMP) |
| if (!scriptElement->isScriptTypeSupported(ScriptElement::AllowLegacyTypeInTypeAttribute)) |
| document()->setShouldProcessNoscriptElement(true); |
| #endif |
| } else { |
| // FIXME: Script execution should be shared between |
| // the libxml2 and Qt XMLDocumentParser implementations. |
| |
| if (scriptElement->readyToBeParserExecuted()) |
| scriptElement->executeScript(ScriptSourceCode(scriptElement->scriptContent(), document()->url(), m_scriptStartPosition)); |
| else if (scriptElement->willBeParserExecuted()) { |
| m_pendingScript = scriptElement->cachedScript(); |
| m_scriptElement = element; |
| m_pendingScript->addClient(this); |
| |
| // m_pendingScript will be 0 if script was already loaded and addClient() executed it. |
| if (m_pendingScript) |
| pauseParsing(); |
| } else |
| m_scriptElement = 0; |
| |
| // JavaScript may have detached the parser |
| if (isDetached()) |
| return; |
| } |
| m_requestingScript = false; |
| popCurrentNode(); |
| } |
| |
| void XMLDocumentParser::characters(const xmlChar* s, int len) |
| { |
| if (isStopped()) |
| return; |
| |
| if (m_parserPaused) { |
| m_pendingCallbacks->appendCharactersCallback(s, len); |
| return; |
| } |
| |
| if (!m_currentNode->isTextNode()) |
| enterText(); |
| m_bufferedText.append(s, len); |
| } |
| |
| void XMLDocumentParser::error(ErrorType type, const char* message, va_list args) |
| { |
| if (isStopped()) |
| return; |
| |
| #if COMPILER(MSVC) || COMPILER(RVCT) |
| char m[1024]; |
| vsnprintf(m, sizeof(m) - 1, message, args); |
| #else |
| char* m; |
| if (vasprintf(&m, message, args) == -1) |
| return; |
| #endif |
| |
| if (m_parserPaused) |
| m_pendingCallbacks->appendErrorCallback(type, reinterpret_cast<const xmlChar*>(m), lineNumber(), columnNumber()); |
| else |
| handleError(type, m, lineNumber(), columnNumber()); |
| |
| #if !COMPILER(MSVC) && !COMPILER(RVCT) |
| free(m); |
| #endif |
| } |
| |
| void XMLDocumentParser::processingInstruction(const xmlChar* target, const xmlChar* data) |
| { |
| if (isStopped()) |
| return; |
| |
| if (m_parserPaused) { |
| m_pendingCallbacks->appendProcessingInstructionCallback(target, data); |
| return; |
| } |
| |
| exitText(); |
| |
| // ### handle exceptions |
| ExceptionCode ec = 0; |
| RefPtr<ProcessingInstruction> pi = document()->createProcessingInstruction( |
| toString(target), toString(data), ec); |
| if (ec) |
| return; |
| |
| pi->setCreatedByParser(true); |
| |
| m_currentNode->deprecatedParserAddChild(pi.get()); |
| if (m_view && !pi->attached()) |
| pi->attach(); |
| |
| pi->finishParsingChildren(); |
| |
| if (pi->isCSS()) |
| m_sawCSS = true; |
| #if ENABLE(XSLT) |
| m_sawXSLTransform = !m_sawFirstElement && pi->isXSL(); |
| if (m_sawXSLTransform && !document()->transformSourceDocument()) |
| stopParsing(); |
| #endif |
| } |
| |
| void XMLDocumentParser::cdataBlock(const xmlChar* s, int len) |
| { |
| if (isStopped()) |
| return; |
| |
| if (m_parserPaused) { |
| m_pendingCallbacks->appendCDATABlockCallback(s, len); |
| return; |
| } |
| |
| exitText(); |
| |
| RefPtr<Node> newNode = CDATASection::create(document(), toString(s, len)); |
| m_currentNode->deprecatedParserAddChild(newNode.get()); |
| if (m_view && !newNode->attached()) |
| newNode->attach(); |
| } |
| |
| void XMLDocumentParser::comment(const xmlChar* s) |
| { |
| if (isStopped()) |
| return; |
| |
| if (m_parserPaused) { |
| m_pendingCallbacks->appendCommentCallback(s); |
| return; |
| } |
| |
| exitText(); |
| |
| RefPtr<Node> newNode = Comment::create(document(), toString(s)); |
| m_currentNode->deprecatedParserAddChild(newNode.get()); |
| if (m_view && !newNode->attached()) |
| newNode->attach(); |
| } |
| |
| void XMLDocumentParser::startDocument(const xmlChar* version, const xmlChar* encoding, int standalone) |
| { |
| ExceptionCode ec = 0; |
| |
| if (version) |
| document()->setXMLVersion(toString(version), ec); |
| document()->setXMLStandalone(standalone == 1, ec); // possible values are 0, 1, and -1 |
| if (encoding) |
| document()->setXMLEncoding(toString(encoding)); |
| } |
| |
| void XMLDocumentParser::endDocument() |
| { |
| exitText(); |
| #if ENABLE(XHTMLMP) |
| m_hasDocTypeDeclaration = false; |
| #endif |
| } |
| |
| void XMLDocumentParser::internalSubset(const xmlChar* name, const xmlChar* externalID, const xmlChar* systemID) |
| { |
| if (isStopped()) |
| return; |
| |
| if (m_parserPaused) { |
| m_pendingCallbacks->appendInternalSubsetCallback(name, externalID, systemID); |
| return; |
| } |
| |
| if (document()) { |
| #if ENABLE(WML) || ENABLE(XHTMLMP) |
| String extId = toString(externalID); |
| #endif |
| #if ENABLE(WML) |
| 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 |
| #if ENABLE(XHTMLMP) |
| String dtdName = toString(name); |
| if (extId == "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" |
| || extId == "-//WAPFORUM//DTD XHTML Mobile 1.1//EN") { |
| if (dtdName != HTMLNames::htmlTag.localName()) { |
| handleError(fatal, "Invalid DOCTYPE declaration, expected 'html' as root element.", lineNumber(), columnNumber()); |
| return; |
| } |
| |
| if (document()->isXHTMLMPDocument()) |
| setIsXHTMLMPDocument(true); |
| else |
| setIsXHTMLDocument(true); |
| |
| m_hasDocTypeDeclaration = true; |
| } |
| #endif |
| |
| document()->parserAddChild(DocumentType::create(document(), toString(name), toString(externalID), toString(systemID))); |
| } |
| } |
| |
| static inline XMLDocumentParser* getParser(void* closure) |
| { |
| xmlParserCtxtPtr ctxt = static_cast<xmlParserCtxtPtr>(closure); |
| return static_cast<XMLDocumentParser*>(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; |
| |
| getParser(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; |
| |
| getParser(closure)->endElementNs(); |
| } |
| |
| static void charactersHandler(void* closure, const xmlChar* s, int len) |
| { |
| if (hackAroundLibXMLEntityBug(closure)) |
| return; |
| |
| getParser(closure)->characters(s, len); |
| } |
| |
| static void processingInstructionHandler(void* closure, const xmlChar* target, const xmlChar* data) |
| { |
| if (hackAroundLibXMLEntityBug(closure)) |
| return; |
| |
| getParser(closure)->processingInstruction(target, data); |
| } |
| |
| static void cdataBlockHandler(void* closure, const xmlChar* s, int len) |
| { |
| if (hackAroundLibXMLEntityBug(closure)) |
| return; |
| |
| getParser(closure)->cdataBlock(s, len); |
| } |
| |
| static void commentHandler(void* closure, const xmlChar* comment) |
| { |
| if (hackAroundLibXMLEntityBug(closure)) |
| return; |
| |
| getParser(closure)->comment(comment); |
| } |
| |
| WTF_ATTRIBUTE_PRINTF(2, 3) |
| static void warningHandler(void* closure, const char* message, ...) |
| { |
| va_list args; |
| va_start(args, message); |
| getParser(closure)->error(XMLDocumentParser::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); |
| getParser(closure)->error(XMLDocumentParser::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); |
| getParser(closure)->error(XMLDocumentParser::nonFatal, message, args); |
| va_end(args); |
| } |
| |
| // Using a static 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 xmlEntityPtr sharedXHTMLEntity() |
| { |
| static xmlEntity entity; |
| if (!entity.type) { |
| entity.type = XML_ENTITY_DECL; |
| entity.orig = sharedXHTMLEntityResult; |
| entity.content = sharedXHTMLEntityResult; |
| entity.etype = XML_INTERNAL_PREDEFINED_ENTITY; |
| } |
| return &entity; |
| } |
| |
| 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); |
| xmlEntityPtr entity = sharedXHTMLEntity(); |
| entity->length = value.length(); |
| entity->name = name; |
| memcpy(sharedXHTMLEntityResult, value.data(), entity->length + 1); |
| |
| return entity; |
| } |
| |
| 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 && (getParser(closure)->isXHTMLDocument() |
| #if ENABLE(XHTMLMP) |
| || getParser(closure)->isXHTMLMPDocument() |
| #endif |
| #if ENABLE(WML) |
| || getParser(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); |
| switchToUTF16(ctxt); |
| getParser(closure)->startDocument(ctxt->version, ctxt->encoding, ctxt->standalone); |
| xmlSAX2StartDocument(closure); |
| } |
| |
| static void endDocumentHandler(void* closure) |
| { |
| getParser(closure)->endDocument(); |
| xmlSAX2EndDocument(closure); |
| } |
| |
| static void internalSubsetHandler(void* closure, const xmlChar* name, const xmlChar* externalID, const xmlChar* systemID) |
| { |
| getParser(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") |
| ) |
| getParser(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 XMLDocumentParser::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; |
| DocumentParser::startParsing(); |
| m_sawError = false; |
| m_sawCSS = false; |
| m_sawXSLTransform = false; |
| m_sawFirstElement = false; |
| |
| XMLDocumentParserScope scope(document()->cachedResourceLoader()); |
| if (m_parsingFragment) |
| m_context = XMLParserContext::createMemoryParser(&sax, this, chunk); |
| else { |
| ASSERT(!chunk); |
| m_context = XMLParserContext::createStringParser(&sax, this); |
| } |
| } |
| |
| void XMLDocumentParser::doEnd() |
| { |
| if (!isStopped()) { |
| if (m_context) { |
| // Tell libxml we're done. |
| { |
| XMLDocumentParserScope scope(document()->cachedResourceLoader()); |
| xmlParseChunk(context(), 0, 0, 1); |
| } |
| |
| m_context = 0; |
| } |
| } |
| |
| #if ENABLE(XSLT) |
| XMLTreeViewer xmlTreeViewer(document()); |
| bool xmlViewerMode = !m_sawError && !m_sawCSS && !m_sawXSLTransform && xmlTreeViewer.hasNoStyleInformation(); |
| if (xmlViewerMode) |
| xmlTreeViewer.transformDocumentToTreeView(); |
| |
| if (m_sawXSLTransform) { |
| void* doc = xmlDocPtrForString(document()->cachedResourceLoader(), m_originalSourceForTransform, document()->url().string()); |
| document()->setTransformSource(new TransformSource(doc)); |
| |
| document()->setParsing(false); // Make the document think it's done, so it will apply XSL stylesheets. |
| document()->styleSelectorChanged(RecalcStyleImmediately); |
| document()->setParsing(true); |
| |
| DocumentParser::stopParsing(); |
| } |
| #endif |
| } |
| |
| #if ENABLE(XSLT) |
| void* xmlDocPtrForString(CachedResourceLoader* cachedResourceLoader, 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); |
| |
| XMLDocumentParserScope scope(cachedResourceLoader, errorFunc, 0); |
| 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); |
| return sourceDoc; |
| } |
| #endif |
| |
| int XMLDocumentParser::lineNumber() const |
| { |
| // FIXME: The implementation probably returns 1-based int, but method should return 0-based. |
| return context() ? context()->input->line : 1; |
| } |
| |
| int XMLDocumentParser::columnNumber() const |
| { |
| // FIXME: The implementation probably returns 1-based int, but method should return 0-based. |
| return context() ? context()->input->col : 1; |
| } |
| |
| TextPosition0 XMLDocumentParser::textPosition() const |
| { |
| xmlParserCtxtPtr context = this->context(); |
| if (!context) |
| return TextPosition0::minimumPosition(); |
| // FIXME: The context probably contains 1-based numbers, but we treat them as 0-based, |
| // to be consistent with fixme's in lineNumber() and columnNumber |
| // methods. |
| return TextPosition0(WTF::ZeroBasedNumber::fromZeroBasedInt(context->input->line), |
| WTF::ZeroBasedNumber::fromZeroBasedInt(context->input->col)); |
| } |
| |
| // This method has a correct implementation, in contrast to textPosition() method. |
| // It should replace textPosition(). |
| TextPosition1 XMLDocumentParser::textPositionOneBased() const |
| { |
| xmlParserCtxtPtr context = this->context(); |
| if (!context) |
| return TextPosition1::minimumPosition(); |
| return TextPosition1(WTF::OneBasedNumber::fromOneBasedInt(context->input->line), |
| WTF::OneBasedNumber::fromOneBasedInt(context->input->col)); |
| } |
| |
| void XMLDocumentParser::stopParsing() |
| { |
| DocumentParser::stopParsing(); |
| if (context()) |
| xmlStopParser(context()); |
| } |
| |
| void XMLDocumentParser::resumeParsing() |
| { |
| ASSERT(!isDetached()); |
| 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(); |
| append(rest); |
| |
| // 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 XMLDocumentParser::appendFragmentSource(const String& chunk) |
| { |
| ASSERT(!m_context); |
| ASSERT(m_parsingFragment); |
| |
| CString chunkAsUtf8 = chunk.utf8(); |
| initializeParserContext(chunkAsUtf8.data()); |
| xmlParseContent(context()); |
| endDocument(); // Close any open text nodes. |
| |
| // FIXME: If this code is actually needed, it should probably move to finish() |
| // XMLDocumentParserQt has a similar check (m_stream.error() == QXmlStreamReader::PrematureEndOfDocumentError) in doEnd(). |
| // Check if all the chunk has been processed. |
| long bytesProcessed = xmlByteConsumed(context()); |
| if (bytesProcessed == -1 || ((unsigned long)bytesProcessed) != chunkAsUtf8.length()) { |
| // FIXME: I don't believe we can hit this case without also having seen an error. |
| // If we hit this ASSERT, we've found a test case which demonstrates the need for this code. |
| ASSERT(m_sawError); |
| return false; |
| } |
| |
| // No error if the chunk is well formed or it is not but we have no error. |
| return context()->wellFormed || !xmlCtxtGetLastError(context()); |
| } |
| |
| // -------------------------------- |
| |
| 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; |
| RefPtr<XMLParserContext> parser = XMLParserContext::createStringParser(&sax, &state); |
| String parseString = "<?xml version=\"1.0\"?><attrs " + string + " />"; |
| xmlParseChunk(parser->context(), reinterpret_cast<const char*>(parseString.characters()), parseString.length() * sizeof(UChar), 1); |
| attrsOK = state.gotAttributes; |
| return state.attributes; |
| } |
| |
| } |
