| /* |
| * 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 "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 "ScriptableDocumentParser.h" |
| #include "ScriptElement.h" |
| #include "ScriptSourceCode.h" |
| #include "ScriptValue.h" |
| #include "TextResourceDecoder.h" |
| #include "TransformSource.h" |
| #include "XMLNSNames.h" |
| #include <QDebug> |
| #include <wtf/StringExtras.h> |
| #include <wtf/Threading.h> |
| #include <wtf/Vector.h> |
| #include <wtf/text/CString.h> |
| |
| 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_sawCSS(false) |
| , m_sawXSLTransform(false) |
| , m_sawFirstElement(false) |
| , m_isXHTMLDocument(false) |
| , m_parserPaused(false) |
| , m_requestingScript(false) |
| , m_finishCalled(false) |
| , m_xmlErrors(document) |
| , m_pendingScript(0) |
| , m_scriptStartPosition(TextPosition::belowRangePosition()) |
| , m_parsingFragment(false) |
| , m_scriptingPermission(AllowScriptingContent) |
| { |
| 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_sawCSS(false) |
| , m_sawXSLTransform(false) |
| , m_sawFirstElement(false) |
| , m_isXHTMLDocument(false) |
| , m_parserPaused(false) |
| , m_requestingScript(false) |
| , m_finishCalled(false) |
| , m_xmlErrors(fragment->document()) |
| , m_pendingScript(0) |
| , m_scriptStartPosition(TextPosition::belowRangePosition()) |
| , 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 (const ElementAttributeData* attrs = element->updatedAttributeData()) { |
| for (unsigned i = 0; i < attrs->length(); i++) { |
| const 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(XMLErrors::fatal, "Encoding error", textPosition()); |
| return; |
| } |
| |
| QString data(parseString); |
| if (!data.isEmpty()) { |
| // JavaScript may cause the parser to detach, |
| // keep this alive until this function is done. |
| RefPtr<XMLDocumentParser> protect(this); |
| |
| m_stream.addData(data); |
| parse(); |
| } |
| |
| return; |
| } |
| |
| void XMLDocumentParser::initializeParserContext(const CString&) |
| { |
| DocumentParser::startParsing(); |
| m_sawError = false; |
| m_sawCSS = false; |
| m_sawXSLTransform = false; |
| m_sawFirstElement = false; |
| } |
| |
| void XMLDocumentParser::doEnd() |
| { |
| #if ENABLE(XSLT) |
| if (m_sawXSLTransform) { |
| document()->setTransformSource(adoptPtr(new TransformSource(m_originalSourceForTransform.toString()))); |
| document()->setParsing(false); // Make the doc think it's done, so it will apply xsl sheets. |
| document()->styleResolverChanged(RecalcStyleImmediately); |
| document()->setParsing(true); |
| DocumentParser::stopParsing(); |
| } |
| #endif |
| |
| if (m_stream.error() == QXmlStreamReader::PrematureEndOfDocumentError |
| || (m_wroteText && !m_sawFirstElement && !m_sawXSLTransform && !m_sawError)) |
| handleError(XMLErrors::fatal, qPrintable(m_stream.errorString()), textPosition()); |
| } |
| |
| OrdinalNumber XMLDocumentParser::lineNumber() const |
| { |
| return OrdinalNumber::fromOneBasedInt(m_stream.lineNumber()); |
| } |
| |
| OrdinalNumber XMLDocumentParser::columnNumber() const |
| { |
| return OrdinalNumber::fromOneBasedInt(m_stream.columnNumber()); |
| } |
| |
| TextPosition XMLDocumentParser::textPosition() const |
| { |
| return TextPosition(lineNumber(), 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 handleNamespaceAttributes(Vector<Attribute, 8>& prefixedAttributes, const QXmlStreamNamespaceDeclarations &ns, ExceptionCode& ec) |
| { |
| 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()); |
| |
| QualifiedName parsedName = anyName; |
| if (!Element::parseAttributeName(parsedName, XMLNSNames::xmlnsNamespaceURI, namespaceQName, ec)) |
| return; |
| |
| prefixedAttributes.append(Attribute(parsedName, namespaceURI)); |
| } |
| } |
| |
| static inline void handleElementAttributes(Vector<Attribute, 8>& prefixedAttributes, const QXmlStreamAttributes &attrs, ExceptionCode& ec) |
| { |
| 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(); |
| |
| QualifiedName parsedName = anyName; |
| if (!Element::parseAttributeName(parsedName, attrURI, attrQName, ec)) |
| return; |
| |
| prefixedAttributes.append(Attribute(parsedName, attrValue)); |
| } |
| } |
| |
| void XMLDocumentParser::parse() |
| { |
| while (!isStopped() && !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: |
| 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(); |
| break; |
| case QXmlStreamReader::EntityReference: { |
| //qDebug()<<"---------- ENTITY = "<<m_stream.name().toString() |
| // <<", t = "<<m_stream.text().toString(); |
| if (isXHTMLDocument()) { |
| QString entity = m_stream.name().toString(); |
| UChar c = decodeNamedEntity(entity.toUtf8().constData()); |
| if (!m_leafTextNode) |
| enterText(); |
| ExceptionCode ec = 0; |
| String str(&c, 1); |
| // qDebug()<<" ------- adding entity "<<str; |
| m_leafTextNode->appendData(str, ec); |
| } |
| break; |
| } |
| case QXmlStreamReader::ProcessingInstruction: |
| parseProcessingInstruction(); |
| break; |
| default: { |
| if (m_stream.error() != QXmlStreamReader::PrematureEndOfDocumentError) { |
| XMLErrors::ErrorType type = (m_stream.error() == QXmlStreamReader::NotWellFormedError) ? |
| XMLErrors::fatal : XMLErrors::warning; |
| handleError(type, qPrintable(m_stream.errorString()), textPosition()); |
| } |
| 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); |
| document()->setHasXMLDeclaration(!version.isEmpty()); |
| } |
| } |
| |
| 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; |
| } |
| |
| bool isFirstElement = !m_sawFirstElement; |
| m_sawFirstElement = true; |
| |
| Vector<Attribute, 8> prefixedAttributes; |
| ExceptionCode ec = 0; |
| handleNamespaceAttributes(prefixedAttributes, m_stream.namespaceDeclarations(), ec); |
| if (ec) { |
| newElement->parserSetAttributes(prefixedAttributes, m_scriptingPermission); |
| stopParsing(); |
| return; |
| } |
| |
| handleElementAttributes(prefixedAttributes, m_stream.attributes(), ec); |
| newElement->parserSetAttributes(prefixedAttributes, m_scriptingPermission); |
| if (ec) { |
| stopParsing(); |
| return; |
| } |
| |
| ScriptElement* scriptElement = toScriptElement(newElement.get()); |
| if (scriptElement) |
| m_scriptStartPosition = textPosition(); |
| |
| m_currentNode->parserAppendChild(newElement.get()); |
| |
| pushCurrentNode(newElement.get()); |
| if (m_view && !newElement->attached()) |
| newElement->attach(); |
| |
| if (newElement->hasTagName(HTMLNames::htmlTag)) |
| static_cast<HTMLHtmlElement*>(newElement.get())->insertedByParser(); |
| |
| if (isFirstElement && document()->frame()) |
| document()->frame()->loader()->dispatchDocumentElementAvailable(); |
| } |
| |
| void XMLDocumentParser::parseEndElement() |
| { |
| exitText(); |
| |
| RefPtr<ContainerNode> n = m_currentNode; |
| n->finishParsingChildren(); |
| |
| if (m_scriptingPermission == DisallowScriptingContent && n->isElementNode() && toScriptElement(static_cast<Element*>(n.get()))) { |
| popCurrentNode(); |
| ExceptionCode ec; |
| n->remove(ec); |
| return; |
| } |
| |
| if (!n->isElementNode() || !m_view) { |
| if (!m_currentNodeStack.isEmpty()) |
| popCurrentNode(); |
| return; |
| } |
| |
| Element* element = static_cast<Element*>(n.get()); |
| |
| // The element's parent may have already been removed from document. |
| // Parsing continues in this case, but scripts aren't executed. |
| if (!element->inDocument()) { |
| popCurrentNode(); |
| return; |
| } |
| |
| ScriptElement* scriptElement = toScriptElement(element); |
| if (!scriptElement) { |
| popCurrentNode(); |
| return; |
| } |
| |
| // don't load external scripts for standalone documents (for now) |
| ASSERT(!m_pendingScript); |
| m_requestingScript = true; |
| |
| if (scriptElement->prepareScript(m_scriptStartPosition, ScriptElement::AllowLegacyTypeInTypeAttribute)) { |
| if (scriptElement->readyToBeParserExecuted()) |
| scriptElement->executeScript(ScriptSourceCode(scriptElement->scriptContent(), document()->url(), m_scriptStartPosition)); |
| else if (scriptElement->willBeParserExecuted()) { |
| m_pendingScript = scriptElement->cachedScript(); |
| m_scriptElement = element; |
| m_pendingScript->addClient(this); |
| |
| // m_pendingScript will be 0 if script was already loaded and addClient() executed it. |
| if (m_pendingScript) |
| pauseParsing(); |
| } else |
| m_scriptElement = 0; |
| } |
| m_requestingScript = false; |
| popCurrentNode(); |
| } |
| |
| void XMLDocumentParser::parseCharacters() |
| { |
| if (!m_leafTextNode) |
| enterText(); |
| ExceptionCode ec = 0; |
| m_leafTextNode->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->parserAppendChild(pi.get()); |
| if (m_view && !pi->attached()) |
| pi->attach(); |
| |
| pi->finishParsingChildren(); |
| |
| if (pi->isCSS()) |
| m_sawCSS = true; |
| #if ENABLE(XSLT) |
| m_sawXSLTransform = !m_sawFirstElement && pi->isXSL(); |
| if (m_sawXSLTransform && !document()->transformSourceDocument()) |
| stopParsing(); |
| #endif |
| } |
| |
| void XMLDocumentParser::parseCdata() |
| { |
| exitText(); |
| |
| RefPtr<CDATASection> newNode = CDATASection::create(document(), m_stream.text()); |
| |
| m_currentNode->parserAppendChild(newNode.get()); |
| if (m_view && !newNode->attached()) |
| newNode->attach(); |
| } |
| |
| void XMLDocumentParser::parseComment() |
| { |
| exitText(); |
| |
| RefPtr<Comment> newNode = Comment::create(document(), m_stream.text()); |
| |
| m_currentNode->parserAppendChild(newNode.get()); |
| if (m_view && !newNode->attached()) |
| newNode->attach(); |
| } |
| |
| void XMLDocumentParser::endDocument() |
| { |
| } |
| |
| 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")) |
| || (publicId == QLatin1String("-//WAPFORUM//DTD XHTML Mobile 1.0//EN")) |
| ) |
| setIsXHTMLDocument(true); // controls if we replace entities or not. |
| if (!m_parsingFragment) |
| document()->parserAppendChild(DocumentType::create(document(), name, publicId, systemId)); |
| |
| } |
| } |
