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Diffstat (limited to 'WebCore/dom/XMLDocumentParserQt.cpp')
| -rw-r--r-- | WebCore/dom/XMLDocumentParserQt.cpp | 712 |
1 files changed, 712 insertions, 0 deletions
diff --git a/WebCore/dom/XMLDocumentParserQt.cpp b/WebCore/dom/XMLDocumentParserQt.cpp new file mode 100644 index 0000000..606770f --- /dev/null +++ b/WebCore/dom/XMLDocumentParserQt.cpp @@ -0,0 +1,712 @@ +/* + * 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/) + * + * 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 "DocLoader.h" +#include "Document.h" +#include "DocumentFragment.h" +#include "DocumentType.h" +#include "Frame.h" +#include "FrameLoader.h" +#include "FrameView.h" +#include "HTMLEntityParser.h" +#include "HTMLLinkElement.h" +#include "HTMLStyleElement.h" +#include "ProcessingInstruction.h" +#include "ResourceError.h" +#include "ResourceHandle.h" +#include "ResourceRequest.h" +#include "ResourceResponse.h" +#include "ScriptableDocumentParser.h" +#include "ScriptController.h" +#include "ScriptElement.h" +#include "ScriptSourceCode.h" +#include "ScriptValue.h" +#include "TextResourceDecoder.h" +#include "TransformSource.h" +#include <QDebug> +#include <wtf/StringExtras.h> +#include <wtf/Threading.h> +#include <wtf/Vector.h> +#include <wtf/text/CString.h> + +#if ENABLE(XHTMLMP) +#include "HTMLNames.h" +#include "HTMLScriptElement.h" +#endif + +using namespace std; + +namespace WebCore { + +class EntityResolver : public QXmlStreamEntityResolver { + virtual QString resolveUndeclaredEntity(const QString &name); +}; + +QString EntityResolver::resolveUndeclaredEntity(const QString &name) +{ + UChar c = decodeNamedEntity(name.toUtf8().constData()); + return QString(c); +} + +// -------------------------------- + +bool XMLDocumentParser::supportsXMLVersion(const String& version) +{ + return version == "1.0"; +} + +XMLDocumentParser::XMLDocumentParser(Document* document, FrameView* frameView) + : ScriptableDocumentParser(document) + , m_view(frameView) + , m_wroteText(false) + , 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_lastErrorLine(0) + , m_lastErrorColumn(0) + , m_pendingScript(0) + , m_scriptStartLine(0) + , m_parsingFragment(false) + , m_scriptingPermission(FragmentScriptingAllowed) +{ + m_stream.setEntityResolver(new EntityResolver); +} + +XMLDocumentParser::XMLDocumentParser(DocumentFragment* fragment, Element* parentElement, FragmentScriptingPermission permission) + : ScriptableDocumentParser(fragment->document()) + , m_view(0) + , m_wroteText(false) + , 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_lastErrorLine(0) + , m_lastErrorColumn(0) + , m_pendingScript(0) + , m_scriptStartLine(0) + , m_parsingFragment(true) + , m_scriptingPermission(permission) +{ + fragment->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; + + QXmlStreamNamespaceDeclarations namespaces; + 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() == "xmlns") + m_defaultNamespaceURI = attr->value(); + else if (attr->prefix() == "xmlns") + namespaces.append(QXmlStreamNamespaceDeclaration(attr->localName(), attr->value())); + } + } + } + m_stream.addExtraNamespaceDeclarations(namespaces); + m_stream.setEntityResolver(new EntityResolver); + + // 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(); +} + +XMLDocumentParser::~XMLDocumentParser() +{ + clearCurrentNodeStack(); + if (m_pendingScript) + m_pendingScript->removeClient(this); + delete m_stream.entityResolver(); +} + +void XMLDocumentParser::doWrite(const String& parseString) +{ + m_wroteText = true; + + if (document()->decoder() && document()->decoder()->sawError()) { + // If the decoder saw an error, report it as fatal (stops parsing) + handleError(fatal, "Encoding error", lineNumber(), columnNumber()); + return; + } + + QString data(parseString); + if (!data.isEmpty()) { + m_stream.addData(data); + parse(); + } + + return; +} + +void XMLDocumentParser::initializeParserContext(const char*) +{ + m_parserStopped = false; + m_sawError = false; + m_sawXSLTransform = false; + m_sawFirstElement = false; +} + +void XMLDocumentParser::doEnd() +{ +#if ENABLE(XSLT) + if (m_sawXSLTransform) { + document()->setTransformSource(new TransformSource(m_originalSourceForTransform)); + document()->setParsing(false); // Make the doc think it's done, so it will apply xsl sheets. + document()->updateStyleSelector(); + document()->setParsing(true); + m_parserStopped = true; + } +#endif + + if (m_stream.error() == QXmlStreamReader::PrematureEndOfDocumentError + || (m_wroteText && !m_sawFirstElement && !m_sawXSLTransform && !m_sawError)) + handleError(fatal, qPrintable(m_stream.errorString()), lineNumber(), columnNumber()); +} + +int XMLDocumentParser::lineNumber() const +{ + return m_stream.lineNumber(); +} + +int XMLDocumentParser::columnNumber() const +{ + return m_stream.columnNumber(); +} + +void XMLDocumentParser::stopParsing() +{ + ScriptableDocumentParser::stopParsing(); +} + +void XMLDocumentParser::resumeParsing() +{ + ASSERT(m_parserPaused); + + m_parserPaused = false; + + // First, execute any pending callbacks + parse(); + 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 append() didn't result + // in any further callbacks being queued, call end() + if (m_finishCalled && !m_parserPaused && !m_pendingScript) + end(); +} + +bool XMLDocumentParser::appendFragmentSource(const String& source) +{ + ASSERT(!m_sawFirstElement); + append(String("<qxmlstreamdummyelement>")); + append(source); + append(String("</qxmlstreamdummyelement>")); + return !hasError(); +} + +// -------------------------------- + +struct AttributeParseState { + HashMap<String, String> attributes; + bool gotAttributes; +}; + +static void attributesStartElementNsHandler(AttributeParseState* state, const QXmlStreamAttributes& attrs) +{ + if (attrs.count() <= 0) + return; + + state->gotAttributes = true; + + for (int i = 0; i < attrs.count(); i++) { + const QXmlStreamAttribute& attr = attrs[i]; + String attrLocalName = attr.name(); + String attrValue = attr.value(); + String attrURI = attr.namespaceUri(); + String attrQName = attr.qualifiedName(); + state->attributes.set(attrQName, attrValue); + } +} + +HashMap<String, String> parseAttributes(const String& string, bool& attrsOK) +{ + AttributeParseState state; + state.gotAttributes = false; + + QXmlStreamReader stream; + QString dummy = QString(QLatin1String("<?xml version=\"1.0\"?><attrs %1 />")).arg(string); + stream.addData(dummy); + while (!stream.atEnd()) { + stream.readNext(); + if (stream.isStartElement()) { + attributesStartElementNsHandler(&state, stream.attributes()); + } + } + attrsOK = state.gotAttributes; + return state.attributes; +} + +static inline String prefixFromQName(const QString& qName) +{ + const int offset = qName.indexOf(QLatin1Char(':')); + if (offset <= 0) + return String(); + else + return qName.left(offset); +} + +static inline void handleElementNamespaces(Element* newElement, const QXmlStreamNamespaceDeclarations &ns, + ExceptionCode& ec, FragmentScriptingPermission scriptingPermission) +{ + for (int i = 0; i < ns.count(); ++i) { + const QXmlStreamNamespaceDeclaration &decl = ns[i]; + String namespaceURI = decl.namespaceUri(); + String namespaceQName = decl.prefix().isEmpty() ? String("xmlns") : String("xmlns:"); + namespaceQName.append(decl.prefix()); + newElement->setAttributeNS("http://www.w3.org/2000/xmlns/", namespaceQName, namespaceURI, ec, scriptingPermission); + if (ec) // exception setting attributes + return; + } +} + +static inline void handleElementAttributes(Element* newElement, const QXmlStreamAttributes &attrs, ExceptionCode& ec, + FragmentScriptingPermission scriptingPermission) +{ + for (int i = 0; i < attrs.count(); ++i) { + const QXmlStreamAttribute &attr = attrs[i]; + String attrLocalName = attr.name(); + String attrValue = attr.value(); + String attrURI = attr.namespaceUri().isEmpty() ? String() : String(attr.namespaceUri()); + String attrQName = attr.qualifiedName(); + newElement->setAttributeNS(attrURI, attrQName, attrValue, ec, scriptingPermission); + if (ec) // exception setting attributes + return; + } +} + +void XMLDocumentParser::parse() +{ + while (!m_parserStopped && !m_parserPaused && !m_stream.atEnd()) { + m_stream.readNext(); + switch (m_stream.tokenType()) { + case QXmlStreamReader::StartDocument: { + startDocument(); + } + break; + case QXmlStreamReader::EndDocument: { + endDocument(); + } + break; + case QXmlStreamReader::StartElement: { +#if ENABLE(XHTMLMP) + if (document()->isXHTMLMPDocument() && !m_hasDocTypeDeclaration) { + handleError(fatal, "DOCTYPE declaration lost.", lineNumber(), columnNumber()); + break; + } +#endif + parseStartElement(); + } + break; + case QXmlStreamReader::EndElement: { + parseEndElement(); + } + break; + case QXmlStreamReader::Characters: { + if (m_stream.isCDATA()) { + //cdata + parseCdata(); + } else { + //characters + parseCharacters(); + } + } + break; + case QXmlStreamReader::Comment: { + parseComment(); + } + break; + case QXmlStreamReader::DTD: { + //qDebug()<<"------------- DTD"; + parseDtd(); +#if ENABLE(XHTMLMP) + m_hasDocTypeDeclaration = true; +#endif + } + break; + case QXmlStreamReader::EntityReference: { + //qDebug()<<"---------- ENTITY = "<<m_stream.name().toString() + // <<", t = "<<m_stream.text().toString(); + if (isXHTMLDocument() +#if ENABLE(XHTMLMP) + || isXHTMLMPDocument() +#endif +#if ENABLE(WML) + || isWMLDocument() +#endif + ) { + QString entity = m_stream.name().toString(); + UChar c = decodeNamedEntity(entity.toUtf8().constData()); + if (!m_currentNode->isTextNode()) + enterText(); + ExceptionCode ec = 0; + String str(&c, 1); + // qDebug()<<" ------- adding entity "<<str; + static_cast<Text*>(m_currentNode)->appendData(str, ec); + } + } + break; + case QXmlStreamReader::ProcessingInstruction: { + parseProcessingInstruction(); + } + break; + default: { + if (m_stream.error() != QXmlStreamReader::PrematureEndOfDocumentError) { + ErrorType type = (m_stream.error() == QXmlStreamReader::NotWellFormedError) ? + fatal : warning; + handleError(type, qPrintable(m_stream.errorString()), lineNumber(), + columnNumber()); + } + } + break; + } + } +} + +void XMLDocumentParser::startDocument() +{ + initializeParserContext(); + ExceptionCode ec = 0; + + if (!m_parsingFragment) { + document()->setXMLStandalone(m_stream.isStandaloneDocument(), ec); + + QStringRef version = m_stream.documentVersion(); + if (!version.isEmpty()) + document()->setXMLVersion(version, ec); + QStringRef encoding = m_stream.documentEncoding(); + if (!encoding.isEmpty()) + document()->setXMLEncoding(encoding); + } +} + +void XMLDocumentParser::parseStartElement() +{ + if (!m_sawFirstElement && m_parsingFragment) { + // skip dummy element for fragments + m_sawFirstElement = true; + return; + } + + exitText(); + + String localName = m_stream.name(); + String uri = m_stream.namespaceUri(); + String prefix = prefixFromQName(m_stream.qualifiedName().toString()); + + if (m_parsingFragment && uri.isNull()) { + Q_ASSERT(prefix.isNull()); + uri = m_defaultNamespaceURI; + } + + QualifiedName qName(prefix, localName, uri); + RefPtr<Element> newElement = document()->createElement(qName, true); + if (!newElement) { + stopParsing(); + return; + } + +#if ENABLE(XHTMLMP) + if (!m_sawFirstElement && isXHTMLMPDocument()) { + // As per 7.1 section 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; + m_stream.addExtraNamespaceDeclaration(QXmlStreamNamespaceDeclaration(prefix, HTMLNames::xhtmlNamespaceURI)); + } + } +#endif + + bool isFirstElement = !m_sawFirstElement; + m_sawFirstElement = true; + + ExceptionCode ec = 0; + handleElementNamespaces(newElement.get(), m_stream.namespaceDeclarations(), ec, m_scriptingPermission); + if (ec) { + stopParsing(); + return; + } + + handleElementAttributes(newElement.get(), m_stream.attributes(), ec, m_scriptingPermission); + if (ec) { + stopParsing(); + return; + } + + ScriptElement* scriptElement = toScriptElement(newElement.get()); + if (scriptElement) + m_scriptStartLine = lineNumber(); + + m_currentNode->deprecatedParserAddChild(newElement.get()); + + pushCurrentNode(newElement.get()); + if (m_view && !newElement->attached()) + newElement->attach(); + + if (isFirstElement && document()->frame()) + document()->frame()->loader()->dispatchDocumentElementAvailable(); +} + +void XMLDocumentParser::parseEndElement() +{ + 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) { + if (!m_currentNodeStack.isEmpty()) + 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 + { + String scriptHref = scriptElement->sourceAttributeValue(); + if (!scriptHref.isEmpty()) { + // we have a src attribute + String scriptCharset = scriptElement->scriptCharset(); + if (element->dispatchBeforeLoadEvent(scriptHref) && + (m_pendingScript = document()->docLoader()->requestScript(scriptHref, scriptCharset))) { + m_scriptElement = element; + m_pendingScript->addClient(this); + + // m_pendingScript will be 0 if script was already loaded and ref() executed it + if (m_pendingScript) + pauseParsing(); + } else + m_scriptElement = 0; + } else + m_view->frame()->script()->executeScript(ScriptSourceCode(scriptElement->scriptContent(), document()->url(), m_scriptStartLine)); + } + m_requestingScript = false; + popCurrentNode(); +} + +void XMLDocumentParser::parseCharacters() +{ + if (!m_currentNode->isTextNode()) + enterText(); + ExceptionCode ec = 0; + static_cast<Text*>(m_currentNode)->appendData(m_stream.text(), ec); +} + +void XMLDocumentParser::parseProcessingInstruction() +{ + exitText(); + + // ### handle exceptions + int exception = 0; + RefPtr<ProcessingInstruction> pi = document()->createProcessingInstruction( + m_stream.processingInstructionTarget(), + m_stream.processingInstructionData(), 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::parseCdata() +{ + exitText(); + + RefPtr<Node> newNode = CDATASection::create(document(), m_stream.text()); + + m_currentNode->deprecatedParserAddChild(newNode.get()); + if (m_view && !newNode->attached()) + newNode->attach(); +} + +void XMLDocumentParser::parseComment() +{ + exitText(); + + RefPtr<Node> newNode = Comment::create(document(), m_stream.text()); + + m_currentNode->deprecatedParserAddChild(newNode.get()); + if (m_view && !newNode->attached()) + newNode->attach(); +} + +void XMLDocumentParser::endDocument() +{ +#if ENABLE(XHTMLMP) + m_hasDocTypeDeclaration = false; +#endif +} + +bool XMLDocumentParser::hasError() const +{ + return m_stream.hasError(); +} + +void XMLDocumentParser::parseDtd() +{ + QStringRef name = m_stream.dtdName(); + QStringRef publicId = m_stream.dtdPublicId(); + QStringRef systemId = m_stream.dtdSystemId(); + + //qDebug() << dtd << name << publicId << systemId; + if ((publicId == QLatin1String("-//W3C//DTD XHTML 1.0 Transitional//EN")) + || (publicId == QLatin1String("-//W3C//DTD XHTML 1.1//EN")) + || (publicId == QLatin1String("-//W3C//DTD XHTML 1.0 Strict//EN")) + || (publicId == QLatin1String("-//W3C//DTD XHTML 1.0 Frameset//EN")) + || (publicId == QLatin1String("-//W3C//DTD XHTML Basic 1.0//EN")) + || (publicId == QLatin1String("-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN")) + || (publicId == QLatin1String("-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN")) +#if !ENABLE(XHTMLMP) + || (publicId == QLatin1String("-//WAPFORUM//DTD XHTML Mobile 1.0//EN")) +#endif + ) + setIsXHTMLDocument(true); // controls if we replace entities or not. +#if ENABLE(XHTMLMP) + else if ((publicId == QLatin1String("-//WAPFORUM//DTD XHTML Mobile 1.1//EN")) + || (publicId == QLatin1String("-//WAPFORUM//DTD XHTML Mobile 1.0//EN"))) { + if (AtomicString(name) != HTMLNames::htmlTag.localName()) { + handleError(fatal, "Invalid DOCTYPE declaration, expected 'html' as root element.", lineNumber(), columnNumber()); + return; + } + + if (document()->isXHTMLMPDocument()) // check if the MIME type is correct with this method + setIsXHTMLMPDocument(true); + else + setIsXHTMLDocument(true); + } +#endif +#if ENABLE(WML) + else if (document()->isWMLDocument() + && publicId != QLatin1String("-//WAPFORUM//DTD WML 1.3//EN") + && publicId != QLatin1String("-//WAPFORUM//DTD WML 1.2//EN") + && publicId != QLatin1String("-//WAPFORUM//DTD WML 1.1//EN") + && publicId != QLatin1String("-//WAPFORUM//DTD WML 1.0//EN")) + handleError(fatal, "Invalid DTD Public ID", lineNumber(), columnNumber()); +#endif + if (!m_parsingFragment) + document()->parserAddChild(DocumentType::create(document(), name, publicId, systemId)); + +} +} + |