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Diffstat (limited to 'Source/WebCore/dom/XMLDocumentParserLibxml2.cpp')
| -rw-r--r-- | Source/WebCore/dom/XMLDocumentParserLibxml2.cpp | 1514 |
1 files changed, 1514 insertions, 0 deletions
diff --git a/Source/WebCore/dom/XMLDocumentParserLibxml2.cpp b/Source/WebCore/dom/XMLDocumentParserLibxml2.cpp new file mode 100644 index 0000000..0f6b4b4 --- /dev/null +++ b/Source/WebCore/dom/XMLDocumentParserLibxml2.cpp @@ -0,0 +1,1514 @@ +/* + * 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 <libxslt/xslt.h> +#endif + +#if ENABLE(XHTMLMP) +#include "HTMLNames.h" +#include "HTMLScriptElement.h" +#endif + +using namespace std; + +namespace WebCore { + +class PendingCallbacks : public 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(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_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_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; + } + + exitText(); + + Node* n = m_currentNode; + n->finishParsingChildren(); + + if (m_scriptingPermission == FragmentScriptingNotAllowed && n->isElementNode() && toScriptElement(static_cast<Element*>(n))) { + popCurrentNode(); + ExceptionCode ec; + n->remove(ec); + return; + } + + if (!n->isElementNode() || !m_view) { + popCurrentNode(); + return; + } + + Element* element = static_cast<Element*>(n); + + // 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; + +#if ENABLE(XHTMLMP) + if (!scriptElement->shouldExecuteAsJavaScript()) + document()->setShouldProcessNoscriptElement(true); + else +#endif + { + // FIXME: Script execution should be shared should be shared between + // the libxml2 and Qt XMLDocumentParser implementations. + + // JavaScript can detach the parser. Make sure this is not released + // before the end of this method. + RefPtr<XMLDocumentParser> protect(this); + + String scriptHref = scriptElement->sourceAttributeValue(); + if (!scriptHref.isEmpty()) { + // we have a src attribute + String scriptCharset = scriptElement->scriptCharset(); + if (element->dispatchBeforeLoadEvent(scriptHref) && + (m_pendingScript = document()->cachedResourceLoader()->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 + scriptElement->executeScript(ScriptSourceCode(scriptElement->scriptContent(), document()->url(), m_scriptStartPosition)); + + // 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 + int exception = 0; + RefPtr<ProcessingInstruction> pi = document()->createProcessingInstruction( + toString(target), toString(data), exception); + if (exception) + return; + + pi->setCreatedByParser(true); + + m_currentNode->deprecatedParserAddChild(pi.get()); + if (m_view && !pi->attached()) + pi->attach(); + + pi->finishParsingChildren(); + +#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_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 ENABLE(XSLT) + if (m_sawXSLTransform) { + void* doc = xmlDocPtrForString(document()->cachedResourceLoader(), m_originalSourceForTransform, document()->url().string()); + document()->setTransformSource(new TransformSource(doc)); + + document()->setParsing(false); // Make the doc think it's done, so it will apply xsl sheets. + document()->styleSelectorChanged(RecalcStyleImmediately); + document()->setParsing(true); + DocumentParser::stopParsing(); + } +#endif + + if (isStopped()) + return; + + if (m_context) { + // Tell libxml we're done. + { + XMLDocumentParserScope scope(document()->cachedResourceLoader()); + xmlParseChunk(context(), 0, 0, 1); + } + + m_context = 0; + } +} + +#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; +} + +} |