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Diffstat (limited to 'WebCore/dom/xml_expat_tokenizer.cpp')
| -rw-r--r-- | WebCore/dom/xml_expat_tokenizer.cpp | 1025 |
1 files changed, 1025 insertions, 0 deletions
diff --git a/WebCore/dom/xml_expat_tokenizer.cpp b/WebCore/dom/xml_expat_tokenizer.cpp new file mode 100644 index 0000000..cf9ab93 --- /dev/null +++ b/WebCore/dom/xml_expat_tokenizer.cpp @@ -0,0 +1,1025 @@ +/** + * This file is part of the DOM implementation for KDE. + * + * Copyright (C) 2000 Peter Kelly (pmk@post.com) + * Copyright (C) 2005, 2006 Apple Computer, Inc. + * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org) + * Copyright (C) 2007 Samuel Weinig (sam@webkit.org) + * Copyright (C) 2007 The Android Open Source Project + * + * 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., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#include "config.h" +#include "XMLTokenizer.h" + +#include "CDATASection.h" +#include "CachedScript.h" +#include "Comment.h" +#include "CString.h" +#include "DocLoader.h" +#include "Document.h" +#include "DocumentFragment.h" +#include "Frame.h" +#include "FrameLoader.h" +#include "FrameView.h" +#include "HTMLNames.h" +#include "HTMLScriptElement.h" +#include "HTMLTableSectionElement.h" +#include "HTMLTokenizer.h" +#include "ProcessingInstruction.h" +#include "EventNames.h" + +// strndup is not available everywhere, so here is a portable version <reed> +static char* portable_strndup(const char src[], size_t len) +{ + char* origDst = (char*)malloc(len + 1); + if (NULL == origDst) + return NULL; + + char* dst = origDst; + while (len-- > 0) { + if ((*dst++ = *src++) == 0) + return origDst; + } + *dst = 0; + return origDst; +} + +namespace WebCore { + +using namespace EventNames; +using namespace HTMLNames; + +const int maxErrors = 25; + +class PendingCallbacks { +public: + PendingCallbacks() { + m_callbacks.setAutoDelete(true); + } + + void appendStartElementNSCallback(const XML_Char* name, const XML_Char** atts) { + PendingStartElementNSCallback* callback = new PendingStartElementNSCallback; + + callback->name = strdup(name); + callback->count = 0; + while (atts[callback->count]) + callback->count++; + callback->atts = (XML_Char**)malloc(sizeof(XML_Char*) * (callback->count+1)); + for (int i=0; i<callback->count; i++) + callback->atts[i] = strdup(atts[i]); + callback->atts[callback->count] = NULL; + + m_callbacks.append(callback); + } + + void appendEndElementNSCallback() { + PendingEndElementNSCallback* callback = new PendingEndElementNSCallback; + + m_callbacks.append(callback); + } + + void appendCharactersCallback(const XML_Char* s, int len) { + PendingCharactersCallback* callback = new PendingCharactersCallback; + + callback->s = portable_strndup(s, len); + callback->len = len; + + m_callbacks.append(callback); + } + + void appendProcessingInstructionCallback(const XML_Char* target, const XML_Char* data) { + PendingProcessingInstructionCallback* callback = new PendingProcessingInstructionCallback; + + callback->target = strdup(target); + callback->data = strdup(data); + + m_callbacks.append(callback); + } + + void appendStartCDATABlockCallback() { + PendingStartCDATABlockCallback* callback = new PendingStartCDATABlockCallback; + + m_callbacks.append(callback); + } + + void appendEndCDATABlockCallback() { + PendingEndCDATABlockCallback* callback = new PendingEndCDATABlockCallback; + + m_callbacks.append(callback); + } + + void appendCommentCallback(const XML_Char* s) { + PendingCommentCallback* callback = new PendingCommentCallback; + + callback->s = strdup(s); + + m_callbacks.append(callback); + } + + void appendErrorCallback(XMLTokenizer::ErrorType type, const char* message, int lineNumber, int columnNumber) { + PendingErrorCallback* callback = new PendingErrorCallback; + + callback->message = strdup(message); + callback->type = type; + callback->lineNumber = lineNumber; + callback->columnNumber = columnNumber; + + m_callbacks.append(callback); + } + + void callAndRemoveFirstCallback(XMLTokenizer* tokenizer) { + PendingCallback* cb = m_callbacks.getFirst(); + + cb->call(tokenizer); + m_callbacks.removeFirst(); + } + + bool isEmpty() const { return m_callbacks.isEmpty(); } + +private: + struct PendingCallback { + + virtual ~PendingCallback() { } + + virtual void call(XMLTokenizer* tokenizer) = 0; + }; + + struct PendingStartElementNSCallback : public PendingCallback { + virtual ~PendingStartElementNSCallback() { + free(name); + for (int i=0; i<count; i++) + free(atts[i]); + free(atts); + } + + virtual void call(XMLTokenizer* tokenizer) { + tokenizer->startElementNs(name, (const XML_Char**)(atts)); + } + + XML_Char* name; + int count; + XML_Char** atts; + }; + + struct PendingEndElementNSCallback : public PendingCallback { + virtual void call(XMLTokenizer* tokenizer) { + tokenizer->endElementNs(); + } + }; + + struct PendingCharactersCallback : public PendingCallback { + virtual ~PendingCharactersCallback() { + free(s); + } + + virtual void call(XMLTokenizer* tokenizer) { + tokenizer->characters(s, len); + } + + XML_Char* s; + int len; + }; + + struct PendingProcessingInstructionCallback : public PendingCallback { + virtual ~PendingProcessingInstructionCallback() { + free(target); + free(data); + } + + virtual void call(XMLTokenizer* tokenizer) { + tokenizer->processingInstruction(target, data); + } + + XML_Char* target; + XML_Char* data; + }; + + struct PendingStartCDATABlockCallback : public PendingCallback { + virtual void call(XMLTokenizer* tokenizer) { + tokenizer->startCdata(); + } + }; + + struct PendingEndCDATABlockCallback : public PendingCallback { + virtual void call(XMLTokenizer* tokenizer) { + tokenizer->endCdata(); + } + }; + + struct PendingCommentCallback : public PendingCallback { + virtual ~PendingCommentCallback() { + free(s); + } + + virtual void call(XMLTokenizer* tokenizer) { + tokenizer->comment(s); + } + + XML_Char* s; + }; + + struct PendingErrorCallback: public PendingCallback { + virtual ~PendingErrorCallback() { + free (message); + } + + virtual void call(XMLTokenizer* tokenizer) { + tokenizer->error(type, message, lineNumber, columnNumber); + } + + XMLTokenizer::ErrorType type; + char* message; + int lineNumber; + int columnNumber; + }; + +public: + DeprecatedPtrList<PendingCallback> m_callbacks; +}; + +// -------------------------------- + +XMLTokenizer::XMLTokenizer(Document *_doc, FrameView *_view) + : m_doc(_doc) + , m_view(_view) + , m_parser(0) + , m_currentNode(_doc) + , m_currentNodeIsReferenced(false) + , m_sawError(false) + , m_sawXSLTransform(false) + , m_sawFirstElement(false) + , m_parserPaused(false) + , m_requestingScript(false) + , m_finishCalled(false) + , m_errorCount(0) + , m_pendingScript(0) + , m_scriptStartLine(0) + , m_parsingFragment(false) + , m_pendingCallbacks(new PendingCallbacks) +{ +} + +XMLTokenizer::XMLTokenizer(DocumentFragment *fragment, Element *parentElement) + : m_doc(fragment->document()) + , m_view(0) + , m_parser(0) + , m_currentNode(fragment) + , m_currentNodeIsReferenced(fragment) + , m_sawError(false) + , m_sawXSLTransform(false) + , m_sawFirstElement(false) + , m_parserPaused(false) + , m_requestingScript(false) + , m_finishCalled(false) + , m_errorCount(0) + , m_pendingScript(0) + , m_scriptStartLine(0) + , m_parsingFragment(true) + , m_pendingCallbacks(new PendingCallbacks) +{ + if (fragment) + fragment->ref(); + if (m_doc) + m_doc->ref(); + + // Add namespaces based on the parent node + Vector<Element*> elemStack; + while (parentElement) { + elemStack.append(parentElement); + + Node* n = parentElement->parentNode(); + if (!n || !n->isElementNode()) + break; + parentElement = static_cast<Element*>(n); + } + + if (elemStack.isEmpty()) + return; + + for (Element* element = elemStack.last(); !elemStack.isEmpty(); elemStack.removeLast()) { + if (NamedAttrMap* attrs = element->attributes()) { + for (unsigned i = 0; i < attrs->length(); i++) { + Attribute* attr = attrs->attributeItem(i); + if (attr->localName() == "xmlns") + m_defaultNamespaceURI = attr->value(); + else if (attr->prefix() == "xmlns") + m_prefixToNamespaceMap.set(attr->localName(), attr->value()); + } + } + } +} + +XMLTokenizer::~XMLTokenizer() +{ + setCurrentNode(0); + if (m_parsingFragment && m_doc) + m_doc->deref(); + if (m_pendingScript) + m_pendingScript->deref(this); +} + +void XMLTokenizer::setCurrentNode(Node* n) +{ + bool nodeNeedsReference = n && n != m_doc; + if (nodeNeedsReference) + n->ref(); + if (m_currentNodeIsReferenced) + m_currentNode->deref(); + m_currentNode = n; + m_currentNodeIsReferenced = nodeNeedsReference; +} + +// use space instead of ':' as separator because ':' can be inside an uri +const XML_Char tripletSep=' '; + +inline DeprecatedString toQString(const XML_Char* str, unsigned int len) +{ + return DeprecatedString::fromUtf8(reinterpret_cast<const char *>(str), len); +} + +inline DeprecatedString toQString(const XML_Char* str) +{ + return DeprecatedString::fromUtf8(str ? reinterpret_cast<const char *>(str) : ""); +} + +// triplet is formatted as URI + sep + local_name + sep + prefix. +static inline void splitTriplet(const XML_Char *name, String &uri, String &localname, String &prefix) +{ + String string[3]; + int found = 0; + const char *start = reinterpret_cast<const char *>(name); + + while(start && (found < 3)) { + char *next = strchr(start, tripletSep); + if (next) { + string[found++] = toQString(start, (next-start)); + start = next+1; + } else { + string[found++] = toQString(start); + break; + } + } + + switch(found) { + case 1: + localname = string[0]; + break; + case 2: + uri = string[0]; + localname = string[1]; + break; + case 3: + uri = string[0]; + localname = string[1]; + prefix = string[2]; + break; + } +} + +static inline void handleElementNamespaces(Element *newElement, const String &uri, const String &prefix, ExceptionCode &exceptioncode) +{ + if (uri.isEmpty()) + return; + + String namespaceQName("xmlns"); + if(!prefix.isEmpty()) + namespaceQName += String(":")+ prefix; + newElement->setAttributeNS(String("http://www.w3.org/2000/xmlns/"), namespaceQName, uri, exceptioncode); +} + +static inline void handleElementAttributes(Element *newElement, const XML_Char **atts, ExceptionCode &exceptioncode) +{ + for (int i = 0; atts[i]; i += 2) { + String attrURI, attrLocalName, attrPrefix; + splitTriplet(atts[i], attrURI, attrLocalName, attrPrefix); + String attrQName = attrPrefix.isEmpty() ? attrLocalName : attrPrefix + String(":") + attrLocalName; + String attrValue = toQString(atts[i+1]); + newElement->setAttributeNS(attrURI, attrQName, attrValue, exceptioncode); + if (exceptioncode) // exception while setting attributes + return; + } +} + +void XMLTokenizer::startElementNs(const XML_Char *name, const XML_Char **atts) +{ + if (m_parserStopped) + return; + + if (m_parserPaused) { + m_pendingCallbacks->appendStartElementNSCallback(name, atts); + return; + } + + m_sawFirstElement = true; + + exitText(); + + String uri, localName, prefix; + splitTriplet(name, uri, localName, prefix); + String qName = prefix.isEmpty() ? localName : prefix + ":" + localName; + + if (m_parsingFragment && uri.isEmpty()) { + if (!prefix.isEmpty()) + uri = String(m_prefixToNamespaceMap.get(prefix.impl())); + else + uri = m_defaultNamespaceURI; + } + + ExceptionCode ec = 0; + RefPtr<Element> newElement = m_doc->createElementNS(uri, qName, ec); + if (!newElement) { + stopParsing(); + return; + } + + handleElementNamespaces(newElement.get(), uri, prefix, ec); + if (ec) { + stopParsing(); + return; + } + + handleElementAttributes(newElement.get(), atts, ec); + if (ec) { + stopParsing(); + return; + } + + if (newElement->hasTagName(scriptTag)) + static_cast<HTMLScriptElement*>(newElement.get())->setCreatedByParser(true); + + if (newElement->hasTagName(HTMLNames::scriptTag)) + m_scriptStartLine = lineNumber(); + + if (!m_currentNode->addChild(newElement.get())) { + stopParsing(); + return; + } + + setCurrentNode(newElement.get()); + if (m_view && !newElement->attached()) + newElement->attach(); +} + +void XMLTokenizer::endElementNs() +{ + if (m_parserStopped) + return; + + if (m_parserPaused) { + m_pendingCallbacks->appendEndElementNSCallback(); + return; + } + + exitText(); + + Node* n = m_currentNode; + RefPtr<Node> parent = n->parentNode(); + n->finishedParsing(); + + // don't load external scripts for standalone documents (for now) + if (n->isElementNode() && m_view && static_cast<Element*>(n)->hasTagName(scriptTag)) { + ASSERT(!m_pendingScript); + + m_requestingScript = true; + + Element* scriptElement = static_cast<Element*>(n); + String scriptHref; + + if (static_cast<Element*>(n)->hasTagName(scriptTag)) + scriptHref = scriptElement->getAttribute(srcAttr); + + if (!scriptHref.isEmpty()) { + // we have a src attribute + const AtomicString& charset = scriptElement->getAttribute(charsetAttr); + if ((m_pendingScript = m_doc->docLoader()->requestScript(scriptHref, charset))) { + m_scriptElement = scriptElement; + m_pendingScript->ref(this); + + // m_pendingScript will be 0 if script was already loaded and ref() executed it + if (m_pendingScript) + pauseParsing(); + } else + m_scriptElement = 0; + + } else { + String scriptCode = ""; + for (Node* child = scriptElement->firstChild(); child; child = child->nextSibling()) { + if (child->isTextNode() || child->nodeType() == Node::CDATA_SECTION_NODE) + scriptCode += static_cast<CharacterData*>(child)->data(); + } + m_view->frame()->loader()->executeScript(m_doc->URL(), m_scriptStartLine - 1, scriptCode); + } + + m_requestingScript = false; + } + + setCurrentNode(parent.get()); +} + +void XMLTokenizer::characters(const XML_Char *s, int len) +{ + if (m_parserStopped) + return; + + if (m_parserPaused) { + m_pendingCallbacks->appendCharactersCallback(s, len); + return; + } + + if (m_currentNode->isTextNode() || enterText()) { + ExceptionCode ec = 0; + static_cast<Text*>(m_currentNode)->appendData(toQString(s, len), ec); + } +} + +bool XMLTokenizer::enterText() +{ + RefPtr<Node> newNode = new Text(m_doc, ""); + if (!m_currentNode->addChild(newNode.get())) + return false; + setCurrentNode(newNode.get()); + return true; +} + +void XMLTokenizer::exitText() +{ + if (m_parserStopped) + return; + + if (!m_currentNode || !m_currentNode->isTextNode()) + return; + + if (m_view && m_currentNode && !m_currentNode->attached()) + m_currentNode->attach(); + + // FIXME: What's the right thing to do if the parent is really 0? + // Just leaving the current node set to the text node doesn't make much sense. + if (Node* par = m_currentNode->parentNode()) + setCurrentNode(par); +} + +void XMLTokenizer::processingInstruction(const XML_Char *target, const XML_Char *data) +{ + if (m_parserStopped) + return; + + if (m_parserPaused) { + m_pendingCallbacks->appendProcessingInstructionCallback(target, data); + return; + } + + exitText(); + + // ### handle exceptions + int exception = 0; + RefPtr<ProcessingInstruction> pi = m_doc->createProcessingInstruction( + toQString(target), toQString(data), exception); + if (exception) + return; + + if (!m_currentNode->addChild(pi.get())) + return; + if (m_view && !pi->attached()) + pi->attach(); + + // don't load stylesheets for standalone documents + if (m_doc->frame()) { + m_sawXSLTransform = !m_sawFirstElement && !pi->checkStyleSheet(); + if (m_sawXSLTransform) + stopParsing(); + } +} + +void XMLTokenizer::comment(const XML_Char *s) +{ + if (m_parserStopped) + return; + + if (m_parserPaused) { + m_pendingCallbacks->appendCommentCallback(s); + return; + } + + exitText(); + + RefPtr<Node> newNode = m_doc->createComment(toQString(s)); + m_currentNode->addChild(newNode.get()); + if (m_view && !newNode->attached()) + newNode->attach(); +} + +void XMLTokenizer::startCdata() +{ + if (m_parserStopped) + return; + + if (m_parserPaused) { + m_pendingCallbacks->appendStartCDATABlockCallback(); + return; + } + + exitText(); + + RefPtr<Node> newNode = new CDATASection(m_doc, ""); + if (!m_currentNode->addChild(newNode.get())) + return; + if (m_view && !newNode->attached()) + newNode->attach(); + setCurrentNode(newNode.get()); +} + +void XMLTokenizer::endCdata() +{ + if (m_parserStopped) + return; + + if (m_parserPaused) { + m_pendingCallbacks->appendEndCDATABlockCallback(); + return; + } + + if (m_currentNode->parentNode() != 0) + setCurrentNode(m_currentNode->parentNode()); +} + +static void XMLCALL startElementHandler(void *userdata, const XML_Char *name, const XML_Char **atts) +{ + XMLTokenizer *tokenizer = static_cast<XMLTokenizer *>(userdata); + tokenizer->startElementNs(name, atts); +} + +static void XMLCALL endElementHandler(void *userdata, const XML_Char *name) +{ + XMLTokenizer *tokenizer = static_cast<XMLTokenizer *>(userdata); + tokenizer->endElementNs(); +} + +static void charactersHandler(void *userdata, const XML_Char *s, int len) +{ + XMLTokenizer *tokenizer = static_cast<XMLTokenizer *>(userdata); + tokenizer->characters(s, len); +} + +static void processingInstructionHandler(void *userdata, const XML_Char *target, const XML_Char *data) +{ + XMLTokenizer *tokenizer = static_cast<XMLTokenizer *>(userdata); + tokenizer->processingInstruction(target, data); +} + +static void commentHandler(void *userdata, const XML_Char *comment) +{ + XMLTokenizer *tokenizer = static_cast<XMLTokenizer *>(userdata); + tokenizer->comment(comment); +} + +static void startCdataHandler(void *userdata) +{ + XMLTokenizer *tokenizer = static_cast<XMLTokenizer *>(userdata); + tokenizer->startCdata(); +} + +static void endCdataHandler(void *userdata) +{ + XMLTokenizer *tokenizer = static_cast<XMLTokenizer *>(userdata); + tokenizer->endCdata(); +} + +static int unknownEncodingHandler(void *userdata, const XML_Char *name, XML_Encoding *info) +{ + // Expat doesn't like latin1 so we have to build this map + // to do conversion correctly. + // FIXME: Create a wrapper for expat that looks like libxml. + if (strcasecmp(name, "latin1") == 0) + { + for (int i=0; i<256; i++) { + info->map[i] = i; + } + return XML_STATUS_OK; + } + return XML_STATUS_ERROR; +} + +bool XMLTokenizer::write(const SegmentedString&s, bool /*appendData*/ ) +{ + String parseString = s.toString(); + + if (m_parserStopped || m_sawXSLTransform) + return false; + + if (m_parserPaused) { + m_pendingSrc.append(s); + return false; + } + + if (!m_parser) { + static const UChar BOM = 0xFEFF; + static const unsigned char BOMHighByte = *reinterpret_cast<const unsigned char*>(&BOM); + m_parser = XML_ParserCreateNS(BOMHighByte == 0xFF ? "UTF-16LE" : "UTF-16BE", tripletSep); + XML_SetUserData(m_parser, (void *)this); + XML_SetReturnNSTriplet(m_parser, true); + + XML_SetStartElementHandler(m_parser, startElementHandler); + XML_SetEndElementHandler(m_parser, endElementHandler); + XML_SetCharacterDataHandler(m_parser, charactersHandler); + XML_SetProcessingInstructionHandler(m_parser, processingInstructionHandler); + XML_SetCommentHandler(m_parser, commentHandler); + XML_SetStartCdataSectionHandler(m_parser, startCdataHandler); + XML_SetEndCdataSectionHandler(m_parser, endCdataHandler); + XML_SetUnknownEncodingHandler(m_parser, unknownEncodingHandler, NULL); + } + + enum XML_Status result = XML_Parse(m_parser, (const char*)parseString.characters(), sizeof(UChar) * parseString.length(), false); + if (result == XML_STATUS_ERROR) { + reportError(); + return false; + } + + return true; +} + +void XMLTokenizer::end() +{ + if (m_parser) { + XML_Parse(m_parser, 0, 0, true); + XML_ParserFree(m_parser); + m_parser = 0; + } + + if (m_sawError) + insertErrorMessageBlock(); + else { + exitText(); + m_doc->updateStyleSelector(); + } + + setCurrentNode(0); + m_doc->finishedParsing(); +} + +void XMLTokenizer::finish() +{ + if (m_parserPaused) + m_finishCalled = true; + else + end(); +} + +void XMLTokenizer::reportError() +{ + ErrorType type = nonFatal; + enum XML_Error code = XML_GetErrorCode(m_parser); + switch (code) { + case XML_ERROR_NO_MEMORY: + type = fatal; + break; + case XML_ERROR_FINISHED: + type = warning; + break; + default: + type = nonFatal; + } + error(type, XML_ErrorString(code), lineNumber(), columnNumber()); +} + +void XMLTokenizer::error(ErrorType type, const char* m, int lineNumber, int columnNumber) +{ + if (type == fatal || m_errorCount < maxErrors) { + switch (type) { + case warning: + m_errorMessages += String::format("warning on line %d at column %d: %s", lineNumber, columnNumber, m); + break; + case fatal: + case nonFatal: + m_errorMessages += String::format("error on line %d at column %d: %s", lineNumber, columnNumber, m); + } + ++m_errorCount; + } + + if (type != warning) + m_sawError = true; + + if (type == fatal) + stopParsing(); +} + +static inline RefPtr<Element> createXHTMLParserErrorHeader(Document* doc, const String& errorMessages) +{ + ExceptionCode ec = 0; + RefPtr<Element> reportElement = doc->createElementNS(xhtmlNamespaceURI, "parsererror", ec); + reportElement->setAttribute(styleAttr, "display:block; pre; border: 2px solid #c77; padding: 0 1em 0 1em; margin: 1em; background-color: #fdd; color: black"); + + RefPtr<Element> h3 = doc->createElementNS(xhtmlNamespaceURI, "h3", ec); + reportElement->appendChild(h3.get(), ec); + h3->appendChild(doc->createTextNode("This page contains the following errors:"), ec); + + RefPtr<Element> fixed = doc->createElementNS(xhtmlNamespaceURI, "div", ec); + reportElement->appendChild(fixed.get(), ec); + fixed->setAttribute(styleAttr, "font-family:monospace;font-size:12px"); + fixed->appendChild(doc->createTextNode(errorMessages), ec); + + h3 = doc->createElementNS(xhtmlNamespaceURI, "h3", ec); + reportElement->appendChild(h3.get(), ec); + h3->appendChild(doc->createTextNode("Below is a rendering of the page up to the first error."), ec); + + return reportElement; +} + +void XMLTokenizer::insertErrorMessageBlock() +{ + // One or more errors occurred during parsing of the code. Display an error block to the user above + // the normal content (the DOM tree is created manually and includes line/col info regarding + // where the errors are located) + + // Create elements for display + ExceptionCode ec = 0; + Document* doc = m_doc; + Node* documentElement = doc->documentElement(); + if (!documentElement) { + RefPtr<Node> rootElement = doc->createElementNS(xhtmlNamespaceURI, "html", ec); + doc->appendChild(rootElement, ec); + RefPtr<Node> body = doc->createElementNS(xhtmlNamespaceURI, "body", ec); + rootElement->appendChild(body, ec); + documentElement = body.get(); + } + + RefPtr<Element> reportElement = createXHTMLParserErrorHeader(doc, m_errorMessages); + documentElement->insertBefore(reportElement, documentElement->firstChild(), ec); + doc->updateRendering(); +} + +void XMLTokenizer::notifyFinished(CachedResource *finishedObj) +{ + ASSERT(m_pendingScript == finishedObj); + + String cachedScriptUrl = m_pendingScript->url(); + String scriptSource = m_pendingScript->script(); + bool errorOccurred = m_pendingScript->errorOccurred(); + m_pendingScript->deref(this); + m_pendingScript = 0; + + RefPtr<Element> e = m_scriptElement; + m_scriptElement = 0; + + if (errorOccurred) + EventTargetNodeCast(e.get())->dispatchHTMLEvent(errorEvent, true, false); + else { + m_view->frame()->loader()->executeScript(cachedScriptUrl, 0, scriptSource); + EventTargetNodeCast(e.get())->dispatchHTMLEvent(loadEvent, false, false); + } + + m_scriptElement = 0; + + if (!m_requestingScript) + resumeParsing(); +} + +bool XMLTokenizer::isWaitingForScripts() const +{ + return m_pendingScript != 0; +} + +Tokenizer *newXMLTokenizer(Document *d, FrameView *v) +{ + return new XMLTokenizer(d, v); +} + +int XMLTokenizer::lineNumber() const +{ + return XML_GetCurrentLineNumber(m_parser); +} + +int XMLTokenizer::columnNumber() const +{ + return XML_GetCurrentColumnNumber(m_parser); +} + +void XMLTokenizer::stopParsing() +{ + Tokenizer::stopParsing(); + if (m_parser) + XML_StopParser(m_parser, 0); +} + +void XMLTokenizer::pauseParsing() +{ + if (m_parsingFragment) + return; + + m_parserPaused = true; +} + +void XMLTokenizer::resumeParsing() +{ + ASSERT(m_parserPaused); + + m_parserPaused = false; + + // First, execute any pending callbacks + while (!m_pendingCallbacks->isEmpty()) { + m_pendingCallbacks->callAndRemoveFirstCallback(this); + + // A callback paused the parser + if (m_parserPaused) + return; + } + + // Then, write any pending data + SegmentedString rest = m_pendingSrc; + m_pendingSrc.clear(); + write(rest, false); + + // Finally, if finish() has been called and write() didn't result + // in any further callbacks being queued, call end() + if (m_finishCalled && m_pendingCallbacks->isEmpty()) + end(); +} + +// -------------------------------- + +bool parseXMLDocumentFragment(const String &string, DocumentFragment *fragment, Element *parent) +{ + XMLTokenizer tokenizer(fragment, parent); + + XML_Parser parser = XML_ParserCreateNS(NULL, tripletSep); + tokenizer.setXMLParser(parser); + + XML_SetUserData(parser, (void *)&tokenizer); + XML_SetReturnNSTriplet(parser, true); + + XML_SetStartElementHandler(parser, startElementHandler); + XML_SetEndElementHandler(parser, endElementHandler); + XML_SetCharacterDataHandler(parser, charactersHandler); + XML_SetProcessingInstructionHandler(parser, processingInstructionHandler); + XML_SetCommentHandler(parser, commentHandler); + XML_SetStartCdataSectionHandler(parser, startCdataHandler); + XML_SetEndCdataSectionHandler(parser, endCdataHandler); + + CString cString = string.utf8(); + int result = XML_Parse(parser, cString.data(), cString.length(), true); + + XML_ParserFree(parser); + tokenizer.setXMLParser(0); + + return result != XML_STATUS_ERROR; +} + +// -------------------------------- + +struct AttributeParseState { + HashMap<String, String> attributes; + bool gotAttributes; +}; + +static void attributesStartElementHandler(void *userData, const XML_Char *name, const XML_Char **atts) +{ + if (strcmp(name, "attrs") != 0) + return; + + if (atts[0] == 0 ) + return; + + AttributeParseState *state = static_cast<AttributeParseState *>(userData); + state->gotAttributes = true; + + for (int i = 0; atts[i]; i += 2) { + DeprecatedString attrName = toQString(atts[i]); + DeprecatedString attrValue = toQString(atts[i+1]); + state->attributes.set(attrName, attrValue); + } +} + +HashMap<String, String> parseAttributes(const String& string, bool& attrsOK) +{ + AttributeParseState state; + state.gotAttributes = false; + + XML_Parser parser = XML_ParserCreateNS(NULL, tripletSep); + XML_SetUserData(parser, (void *)&state); + XML_SetReturnNSTriplet(parser, true); + + XML_SetStartElementHandler(parser, attributesStartElementHandler); + String input = "<?xml version=\"1.0\"?><attrs " + string.deprecatedString() + " />"; + CString cString = input.deprecatedString().utf8(); + if ( XML_Parse(parser, cString.data(), cString.length(), true) != XML_STATUS_ERROR ) + attrsOK = state.gotAttributes; + XML_ParserFree(parser); + + return state.attributes; +} + +} |