--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/WebCore/dom/XMLTokenizer.cpp Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,1996 @@
+/**
+ * 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 Trolltech ASA
+ *
+ * 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 "XMLTokenizer.h"
+
+#include "CDATASection.h"
+#include "CString.h"
+#include "Cache.h"
+#include "CachedScript.h"
+#include "Comment.h"
+#include "DocLoader.h"
+#include "Document.h"
+#include "DocumentFragment.h"
+#include "DocumentType.h"
+#include "EventNames.h"
+#include "Frame.h"
+#include "FrameLoader.h"
+#include "FrameView.h"
+#include "HTMLNames.h"
+#include "HTMLScriptElement.h"
+#include "HTMLStyleElement.h"
+#include "HTMLTableSectionElement.h"
+#include "HTMLTokenizer.h"
+#include "ProcessingInstruction.h"
+#include "ResourceHandle.h"
+#include "ResourceRequest.h"
+#include "ResourceResponse.h"
+#ifndef USE_QXMLSTREAM
+#include <libxml/parser.h>
+#include <libxml/parserInternals.h>
+#else
+#include <QDebug>
+#endif
+#include <wtf/Platform.h>
+#include <wtf/Vector.h>
+
+#if ENABLE(XSLT)
+#include <libxslt/xslt.h>
+#endif
+
+#if ENABLE(SVG)
+#include "SVGNames.h"
+#include "SVGStyleElement.h"
+#include "XLinkNames.h"
+#endif
+
+using namespace std;
+
+namespace WebCore {
+
+using namespace EventNames;
+using namespace HTMLNames;
+
+const int maxErrors = 25;
+
+#ifndef USE_QXMLSTREAM
+class PendingCallbacks {
+public:
+ PendingCallbacks()
+ {
+ m_callbacks.setAutoDelete(true);
+ }
+
+ 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 = reinterpret_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 = reinterpret_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(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() {
+ 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(XMLTokenizer* tokenizer) {
+ tokenizer->startElementNs(xmlLocalName, xmlPrefix, xmlURI,
+ nb_namespaces, (const xmlChar**)namespaces,
+ nb_attributes, nb_defaulted, (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(XMLTokenizer* tokenizer)
+ {
+ tokenizer->endElementNs();
+ }
+ };
+
+ struct PendingCharactersCallback : public PendingCallback {
+ virtual ~PendingCharactersCallback()
+ {
+ xmlFree(s);
+ }
+
+ virtual void call(XMLTokenizer* tokenizer)
+ {
+ tokenizer->characters(s, len);
+ }
+
+ xmlChar* s;
+ int len;
+ };
+
+ struct PendingProcessingInstructionCallback : public PendingCallback {
+ virtual ~PendingProcessingInstructionCallback()
+ {
+ xmlFree(target);
+ xmlFree(data);
+ }
+
+ virtual void call(XMLTokenizer* tokenizer)
+ {
+ tokenizer->processingInstruction(target, data);
+ }
+
+ xmlChar* target;
+ xmlChar* data;
+ };
+
+ struct PendingCDATABlockCallback : public PendingCallback {
+ virtual ~PendingCDATABlockCallback()
+ {
+ xmlFree(s);
+ }
+
+ virtual void call(XMLTokenizer* tokenizer)
+ {
+ tokenizer->cdataBlock(s, len);
+ }
+
+ xmlChar* s;
+ int len;
+ };
+
+ struct PendingCommentCallback : public PendingCallback {
+ virtual ~PendingCommentCallback()
+ {
+ xmlFree(s);
+ }
+
+ virtual void call(XMLTokenizer* tokenizer)
+ {
+ tokenizer->comment(s);
+ }
+
+ xmlChar* s;
+ };
+
+ struct PendingInternalSubsetCallback : public PendingCallback {
+ virtual ~PendingInternalSubsetCallback()
+ {
+ xmlFree(name);
+ xmlFree(externalID);
+ xmlFree(systemID);
+ }
+
+ virtual void call(XMLTokenizer* tokenizer)
+ {
+ tokenizer->internalSubset(name, externalID, systemID);
+ }
+
+ xmlChar* name;
+ xmlChar* externalID;
+ xmlChar* systemID;
+ };
+
+ struct PendingErrorCallback: public PendingCallback {
+ virtual ~PendingErrorCallback()
+ {
+ free (message);
+ }
+
+ virtual void call(XMLTokenizer* tokenizer)
+ {
+ tokenizer->handleError(type, message, lineNumber, columnNumber);
+ }
+
+ XMLTokenizer::ErrorType type;
+ char* message;
+ int lineNumber;
+ int columnNumber;
+ };
+
+public:
+ DeprecatedPtrList<PendingCallback> m_callbacks;
+};
+#endif
+// --------------------------------
+
+static int globalDescriptor = 0;
+
+static int matchFunc(const char* uri)
+{
+ return 1; // Match everything.
+}
+
+static DocLoader* globalDocLoader = 0;
+
+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;
+};
+
+#ifndef USE_QXMLSTREAM
+static bool shouldAllowExternalLoad(const char* inURI)
+{
+ if (strstr(inURI, "/etc/xml/catalog")
+ || strstr(inURI, "http://www.w3.org/Graphics/SVG") == inURI
+ || strstr(inURI, "http://www.w3.org/TR/xhtml") == inURI)
+ return false;
+ return true;
+}
+static void* openFunc(const char* uri)
+{
+ if (!globalDocLoader || !shouldAllowExternalLoad(uri))
+ return &globalDescriptor;
+
+ ResourceError error;
+ ResourceResponse response;
+ Vector<char> data;
+
+ if (globalDocLoader->frame())
+ globalDocLoader->frame()->loader()->loadResourceSynchronously(KURL(uri), error, response, data);
+
+ 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* context, const char* buffer, int len)
+{
+ // 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;
+}
+
+static void errorFunc(void*, const char*, ...)
+{
+ // FIXME: It would be nice to display error messages somewhere.
+}
+
+void setLoaderForLibXMLCallbacks(DocLoader* docLoader)
+{
+ globalDocLoader = docLoader;
+}
+
+static xmlParserCtxtPtr createStringParser(xmlSAXHandlerPtr handlers, void* userData)
+{
+ static bool didInit = false;
+ if (!didInit) {
+ xmlInitParser();
+ xmlRegisterInputCallbacks(matchFunc, openFunc, readFunc, closeFunc);
+ xmlRegisterOutputCallbacks(matchFunc, openFunc, writeFunc, closeFunc);
+ didInit = true;
+ }
+
+ xmlParserCtxtPtr parser = xmlCreatePushParserCtxt(handlers, 0, 0, 0, 0);
+ parser->_private = userData;
+ parser->replaceEntities = true;
+ const UChar BOM = 0xFEFF;
+ const unsigned char BOMHighByte = *reinterpret_cast<const unsigned char*>(&BOM);
+ xmlSwitchEncoding(parser, BOMHighByte == 0xFF ? XML_CHAR_ENCODING_UTF16LE : XML_CHAR_ENCODING_UTF16BE);
+ return parser;
+}
+#endif
+
+// --------------------------------
+
+XMLTokenizer::XMLTokenizer(Document* _doc, FrameView* _view)
+ : m_doc(_doc)
+ , m_view(_view)
+#ifndef USE_QXMLSTREAM
+ , m_context(0)
+#endif
+ , m_currentNode(_doc)
+ , m_currentNodeIsReferenced(false)
+ , m_sawError(false)
+ , m_sawXSLTransform(false)
+ , m_sawFirstElement(false)
+ , m_isXHTMLDocument(false)
+ , 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)
+#ifndef USE_QXMLSTREAM
+ , m_pendingCallbacks(new PendingCallbacks)
+#endif
+{
+}
+
+XMLTokenizer::XMLTokenizer(DocumentFragment* fragment, Element* parentElement)
+ : m_doc(fragment->document())
+ , m_view(0)
+#ifndef USE_QXMLSTREAM
+ , m_context(0)
+#endif
+ , m_currentNode(fragment)
+ , m_currentNodeIsReferenced(fragment)
+ , m_sawError(false)
+ , m_sawXSLTransform(false)
+ , m_sawFirstElement(false)
+ , m_isXHTMLDocument(false)
+ , 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)
+#ifndef USE_QXMLSTREAM
+ , m_pendingCallbacks(new PendingCallbacks)
+#endif
+{
+ 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;
+}
+
+bool XMLTokenizer::write(const SegmentedString& s, bool /*appendData*/)
+{
+ String parseString = s.toString();
+
+ if (m_sawXSLTransform || !m_sawFirstElement)
+ m_originalSourceForTransform += parseString;
+
+ if (m_parserStopped || m_sawXSLTransform)
+ return false;
+
+ if (m_parserPaused) {
+ m_pendingSrc.append(s);
+ return false;
+ }
+
+#ifndef USE_QXMLSTREAM
+ if (!m_context)
+ initializeParserContext();
+
+ // libXML throws an error if you try to switch the encoding for an empty string.
+ if (parseString.length()) {
+ // 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(m_context, BOMHighByte == 0xFF ? XML_CHAR_ENCODING_UTF16LE : XML_CHAR_ENCODING_UTF16BE);
+
+ xmlParseChunk(m_context, reinterpret_cast<const char*>(parseString.characters()), sizeof(UChar) * parseString.length(), 0);
+ }
+#else
+ QString data(parseString);
+ if (!data.isEmpty()) {
+ if (!m_sawFirstElement) {
+ int idx = data.indexOf(QLatin1String("<?xml"));
+ if (idx != -1) {
+ int start = idx + 5;
+ int end = data.indexOf(QLatin1String("?>"), start);
+ QString content = data.mid(start, end-start);
+ bool ok = true;
+ HashMap<String, String> attrs = parseAttributes(content, ok);
+ String version = attrs.get("version");
+ String encoding = attrs.get("encoding");
+ ExceptionCode ec = 0;
+ if (!m_parsingFragment) {
+ if (!version.isEmpty())
+ m_doc->setXMLVersion(version, ec);
+ if (!encoding.isEmpty())
+ m_doc->setXMLEncoding(encoding);
+ }
+ }
+ }
+ m_stream.addData(data);
+ parse();
+ }
+#endif
+
+ return false;
+}
+#ifndef USE_QXMLSTREAM
+static inline String toString(const xmlChar* str, unsigned len)
+{
+ return UTF8Encoding().decode(reinterpret_cast<const char*>(str), len);
+}
+
+static inline String toString(const xmlChar* str)
+{
+ if (!str)
+ return String();
+
+ return UTF8Encoding().decode(reinterpret_cast<const char*>(str), strlen(reinterpret_cast<const char*>(str)));
+}
+
+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)
+{
+ xmlSAX2Namespace* namespaces = reinterpret_cast<xmlSAX2Namespace*>(libxmlNamespaces);
+ for(int i = 0; i < nb_namespaces; i++) {
+ String namespaceQName = "xmlns";
+ String namespaceURI = toString(namespaces[i].uri);
+ if (namespaces[i].prefix)
+ namespaceQName = "xmlns:" + toString(namespaces[i].prefix);
+ newElement->setAttributeNS("http://www.w3.org/2000/xmlns/", namespaceQName, namespaceURI, ec);
+ 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)
+{
+ 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 attrURI = attrPrefix.isEmpty() ? String() : toString(attributes[i].uri);
+ String attrQName = attrPrefix.isEmpty() ? attrLocalName : attrPrefix + ":" + attrLocalName;
+
+ newElement->setAttributeNS(attrURI, attrQName, attrValue, ec);
+ if (ec) // exception setting attributes
+ return;
+ }
+}
+
+void XMLTokenizer::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 (m_parserStopped)
+ return;
+
+ if (m_parserPaused) {
+ m_pendingCallbacks->appendStartElementNSCallback(xmlLocalName, xmlPrefix, xmlURI, nb_namespaces, libxmlNamespaces,
+ nb_attributes, nb_defaulted, libxmlAttributes);
+ return;
+ }
+
+ m_sawFirstElement = true;
+
+ exitText();
+
+ String localName = toString(xmlLocalName);
+ String uri = toString(xmlURI);
+ String prefix = toString(xmlPrefix);
+
+ if (m_parsingFragment && uri.isNull()) {
+ if (!prefix.isNull())
+ uri = m_prefixToNamespaceMap.get(prefix);
+ else
+ uri = m_defaultNamespaceURI;
+ }
+
+ ExceptionCode ec = 0;
+ QualifiedName qName(prefix, localName, uri);
+ RefPtr<Element> newElement = m_doc->createElement(qName, true, ec);
+ if (!newElement) {
+ stopParsing();
+ return;
+ }
+
+ handleElementNamespaces(newElement.get(), libxmlNamespaces, nb_namespaces, ec);
+ if (ec) {
+ stopParsing();
+ return;
+ }
+
+ handleElementAttributes(newElement.get(), libxmlAttributes, nb_attributes, ec);
+ if (ec) {
+ stopParsing();
+ return;
+ }
+
+ if (newElement->hasTagName(scriptTag))
+ static_cast<HTMLScriptElement*>(newElement.get())->setCreatedByParser(true);
+ else if (newElement->hasTagName(HTMLNames::styleTag))
+ static_cast<HTMLStyleElement*>(newElement.get())->setCreatedByParser(true);
+#if ENABLE(SVG)
+ else if (newElement->hasTagName(SVGNames::styleTag))
+ static_cast<SVGStyleElement*>(newElement.get())->setCreatedByParser(true);
+#endif
+
+ if (newElement->hasTagName(HTMLNames::scriptTag)
+#if ENABLE(SVG)
+ || newElement->hasTagName(SVGNames::scriptTag)
+#endif
+ )
+ 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)
+#if ENABLE(SVG)
+ || static_cast<Element*>(n)->hasTagName(SVGNames::scriptTag)
+#endif
+ )) {
+
+
+ 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 ENABLE(SVG)
+ else if (static_cast<Element*>(n)->hasTagName(SVGNames::scriptTag))
+ scriptHref = scriptElement->getAttribute(XLinkNames::hrefAttr);
+#endif
+
+ 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 xmlChar* 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(toString(s, len), ec);
+ }
+}
+
+void XMLTokenizer::error(ErrorType type, const char* message, va_list args)
+{
+ if (m_parserStopped)
+ return;
+
+#if PLATFORM(WIN_OS) || PLATFORM(SYMBIAN)
+ char m[1024];
+ vsnprintf(m, sizeof(m) - 1, message, args);
+#else
+ char* m;
+ vasprintf(&m, message, args);
+#endif
+
+ if (m_parserPaused)
+ m_pendingCallbacks->appendErrorCallback(type, m, lineNumber(), columnNumber());
+ else
+ handleError(type, m, lineNumber(), columnNumber());
+
+#if !PLATFORM(WIN_OS) && !PLATFORM(SYMBIAN)
+ free(m);
+#endif
+}
+
+void XMLTokenizer::processingInstruction(const xmlChar* target, const xmlChar* 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(
+ toString(target), toString(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 ENABLE(XSLT)
+ // Pretend we didn't see this PI if we're the result of a transform.
+ if (m_sawXSLTransform && !m_doc->transformSourceDocument())
+#else
+ if (m_sawXSLTransform)
+#endif
+ // Stop the SAX parser.
+ stopParsing();
+ }
+}
+
+void XMLTokenizer::cdataBlock(const xmlChar* s, int len)
+{
+ if (m_parserStopped)
+ return;
+
+ if (m_parserPaused) {
+ m_pendingCallbacks->appendCDATABlockCallback(s, len);
+ return;
+ }
+
+ exitText();
+
+ RefPtr<Node> newNode = new CDATASection(m_doc, toString(s, len));
+ if (!m_currentNode->addChild(newNode.get()))
+ return;
+ if (m_view && !newNode->attached())
+ newNode->attach();
+}
+
+void XMLTokenizer::comment(const xmlChar* s)
+{
+ if (m_parserStopped)
+ return;
+
+ if (m_parserPaused) {
+ m_pendingCallbacks->appendCommentCallback(s);
+ return;
+ }
+
+ exitText();
+
+ RefPtr<Node> newNode = new Comment(m_doc, toString(s));
+ m_currentNode->addChild(newNode.get());
+ if (m_view && !newNode->attached())
+ newNode->attach();
+}
+
+void XMLTokenizer::startDocument(const xmlChar* version, const xmlChar* encoding, int standalone)
+{
+ ExceptionCode ec = 0;
+
+ if (version)
+ m_doc->setXMLVersion(toString(version), ec);
+ m_doc->setXMLStandalone(standalone == 1, ec); // possible values are 0, 1, and -1
+ if (encoding)
+ m_doc->setXMLEncoding(toString(encoding));
+}
+
+void XMLTokenizer::internalSubset(const xmlChar* name, const xmlChar* externalID, const xmlChar* systemID)
+{
+ if (m_parserStopped)
+ return;
+
+ if (m_parserPaused) {
+ m_pendingCallbacks->appendInternalSubsetCallback(name, externalID, systemID);
+ return;
+ }
+
+ Document* doc = m_doc;
+ if (!doc)
+ return;
+
+ doc->setDocType(new DocumentType(doc, toString(name), toString(externalID), toString(systemID)));
+}
+
+static inline XMLTokenizer* getTokenizer(void* closure)
+{
+ xmlParserCtxtPtr ctxt = static_cast<xmlParserCtxtPtr>(closure);
+ return static_cast<XMLTokenizer*>(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
+ // 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;
+
+ getTokenizer(closure)->startElementNs(localname, prefix, uri, nb_namespaces, namespaces, nb_attributes, nb_defaulted, libxmlAttributes);
+}
+
+static void endElementNsHandler(void* closure, const xmlChar* localname, const xmlChar* prefix, const xmlChar* uri)
+{
+ if (hackAroundLibXMLEntityBug(closure))
+ return;
+
+ getTokenizer(closure)->endElementNs();
+}
+
+static void charactersHandler(void* closure, const xmlChar* s, int len)
+{
+ if (hackAroundLibXMLEntityBug(closure))
+ return;
+
+ getTokenizer(closure)->characters(s, len);
+}
+
+static void processingInstructionHandler(void* closure, const xmlChar* target, const xmlChar* data)
+{
+ if (hackAroundLibXMLEntityBug(closure))
+ return;
+
+ getTokenizer(closure)->processingInstruction(target, data);
+}
+
+static void cdataBlockHandler(void* closure, const xmlChar* s, int len)
+{
+ if (hackAroundLibXMLEntityBug(closure))
+ return;
+
+ getTokenizer(closure)->cdataBlock(s, len);
+}
+
+static void commentHandler(void* closure, const xmlChar* comment)
+{
+ if (hackAroundLibXMLEntityBug(closure))
+ return;
+
+ getTokenizer(closure)->comment(comment);
+}
+
+static void warningHandler(void* closure, const char* message, ...)
+{
+ va_list args;
+ va_start(args, message);
+ getTokenizer(closure)->error(XMLTokenizer::warning, message, args);
+ va_end(args);
+}
+
+static void fatalErrorHandler(void* closure, const char* message, ...)
+{
+ va_list args;
+ va_start(args, message);
+ getTokenizer(closure)->error(XMLTokenizer::fatal, message, args);
+ va_end(args);
+}
+
+static void normalErrorHandler(void* closure, const char* message, ...)
+{
+ va_list args;
+ va_start(args, message);
+ getTokenizer(closure)->error(XMLTokenizer::nonFatal, message, args);
+ va_end(args);
+}
+
+// Using a global variable 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 xmlEntity sharedXHTMLEntity = {
+ 0, XML_ENTITY_DECL, 0, 0, 0, 0, 0, 0, 0,
+ sharedXHTMLEntityResult, sharedXHTMLEntityResult, 0,
+ XML_INTERNAL_PREDEFINED_ENTITY, 0, 0, 0, 0, 0
+};
+
+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);
+ sharedXHTMLEntity.length = value.length();
+ sharedXHTMLEntity.name = name;
+ memcpy(sharedXHTMLEntityResult, value.data(), sharedXHTMLEntity.length + 1);
+
+ return &sharedXHTMLEntity;
+}
+
+static xmlEntityPtr getEntityHandler(void* closure, const xmlChar* name)
+{
+ xmlParserCtxtPtr ctxt = static_cast<xmlParserCtxtPtr>(closure);
+ xmlEntityPtr ent = xmlGetPredefinedEntity(name);
+#if PLATFORM(SYMBIAN)
+ // xml issue: load google.com mobile page
+ if (ent && (ent->etype != XML_INTERNAL_PREDEFINED_ENTITY)) {
+#else
+ if (ent) {
+#endif
+ ent->etype = XML_INTERNAL_PREDEFINED_ENTITY;
+ return ent;
+ }
+
+ ent = xmlGetDocEntity(ctxt->myDoc, name);
+ if (!ent && getTokenizer(closure)->isXHTMLDocument()) {
+ ent = getXHTMLEntity(name);
+ if (ent)
+ ent->etype = XML_INTERNAL_GENERAL_ENTITY;
+ }
+
+ return ent;
+}
+
+static void startDocumentHandler(void* closure)
+{
+ xmlParserCtxt* ctxt = static_cast<xmlParserCtxt*>(closure);
+ getTokenizer(closure)->startDocument(ctxt->version, ctxt->encoding, ctxt->standalone);
+ xmlSAX2StartDocument(closure);
+}
+
+static void internalSubsetHandler(void* closure, const xmlChar* name, const xmlChar* externalID, const xmlChar* systemID)
+{
+ getTokenizer(closure)->internalSubset(name, externalID, systemID);
+ xmlSAX2InternalSubset(closure, name, externalID, systemID);
+}
+
+static void externalSubsetHandler(void* closure, const xmlChar* name, const xmlChar* externalId, const xmlChar* systemId)
+{
+ 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"))
+ getTokenizer(closure)->setIsXHTMLDocument(true); // controls if we replace entities or not.
+}
+
+static void ignorableWhitespaceHandler(void* ctx, const xmlChar* ch, int len)
+{
+ // 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
+}
+#endif
+
+void XMLTokenizer::handleError(ErrorType type, const char* m, int lineNumber, int columnNumber)
+{
+ if (type == fatal || (m_errorCount < maxErrors && m_lastErrorLine != lineNumber && m_lastErrorColumn != columnNumber)) {
+ 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_lastErrorLine = lineNumber;
+ m_lastErrorColumn = columnNumber;
+ ++m_errorCount;
+ }
+
+ if (type != warning)
+ m_sawError = true;
+
+ if (type == fatal)
+ stopParsing();
+}
+
+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::initializeParserContext()
+{
+#ifndef USE_QXMLSTREAM
+ 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.internalSubset = internalSubsetHandler;
+ sax.externalSubset = externalSubsetHandler;
+ sax.ignorableWhitespace = ignorableWhitespaceHandler;
+ sax.entityDecl = xmlSAX2EntityDecl;
+ sax.initialized = XML_SAX2_MAGIC;
+#endif
+ m_parserStopped = false;
+ m_sawError = false;
+ m_sawXSLTransform = false;
+ m_sawFirstElement = false;
+
+#ifndef USE_QXMLSTREAM
+ m_context = createStringParser(&sax, this);
+#endif
+}
+
+void XMLTokenizer::end()
+{
+#if ENABLE(XSLT)
+ if (m_sawXSLTransform) {
+ m_doc->setTransformSource(xmlDocPtrForString(m_doc->docLoader(), m_originalSourceForTransform, m_doc->URL()));
+
+ m_doc->setParsing(false); // Make the doc think it's done, so it will apply xsl sheets.
+ m_doc->updateStyleSelector();
+ m_doc->setParsing(true);
+ m_parserStopped = true;
+ }
+#endif
+
+#ifndef USE_QXMLSTREAM
+ if (m_context) {
+ // Tell libxml we're done.
+ xmlParseChunk(m_context, 0, 0, 1);
+
+ if (m_context->myDoc)
+ xmlFreeDoc(m_context->myDoc);
+ xmlFreeParserCtxt(m_context);
+ m_context = 0;
+ }
+#else
+ if (m_stream.error() == QXmlStreamReader::PrematureEndOfDocumentError) {
+ handleError(fatal, qPrintable(m_stream.errorString()), lineNumber(),
+ columnNumber());
+ }
+#endif
+
+ if (m_sawError)
+ insertErrorMessageBlock();
+ else {
+ exitText();
+ m_doc->updateStyleSelector();
+ }
+
+ setCurrentNode(0);
+ if (!m_parsingFragment)
+ m_doc->finishedParsing();
+}
+
+void XMLTokenizer::finish()
+{
+ if (m_parserPaused)
+ m_finishCalled = true;
+ else
+ end();
+}
+
+static inline RefPtr<Element> createXHTMLParserErrorHeader(Document* doc, const String& errorMessages)
+{
+ ExceptionCode ec = 0;
+ RefPtr<Element> reportElement = doc->createElementNS(xhtmlNamespaceURI, "parsererror", ec);
+ reportElement->setAttribute(styleAttr, "white-space: 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();
+ }
+#if ENABLE(SVG)
+ else if (documentElement->namespaceURI() == SVGNames::svgNamespaceURI) {
+ // Until our SVG implementation has text support, it is best if we
+ // wrap the erroneous SVG document in an xhtml document and render
+ // the combined document with error messages.
+ RefPtr<Node> rootElement = doc->createElementNS(xhtmlNamespaceURI, "html", ec);
+ RefPtr<Node> body = doc->createElementNS(xhtmlNamespaceURI, "body", ec);
+ rootElement->appendChild(body, ec);
+ body->appendChild(documentElement, ec);
+ doc->appendChild(rootElement.get(), ec);
+ documentElement = body.get();
+ }
+#endif
+
+ RefPtr<Element> reportElement = createXHTMLParserErrorHeader(doc, m_errorMessages);
+ documentElement->insertBefore(reportElement, documentElement->firstChild(), ec);
+#if ENABLE(XSLT)
+ if (doc->transformSourceDocument()) {
+ RefPtr<Element> par = doc->createElementNS(xhtmlNamespaceURI, "p", ec);
+ reportElement->appendChild(par, ec);
+ par->setAttribute(styleAttr, "white-space: normal");
+ par->appendChild(doc->createTextNode("This document was created as the result of an XSL transformation. The line and column numbers given are from the transformed result."), ec);
+ }
+#endif
+ doc->updateRendering();
+}
+
+void XMLTokenizer::notifyFinished(CachedResource* finishedObj)
+{
+ ASSERT(m_pendingScript == finishedObj);
+ ASSERT(m_pendingScript->accessCount() > 0);
+
+ 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;
+}
+
+#if ENABLE(XSLT)
+void* xmlDocPtrForString(DocLoader* docLoader, const String& source, const DeprecatedString& 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);
+
+ xmlGenericErrorFunc oldErrorFunc = xmlGenericError;
+ void* oldErrorContext = xmlGenericErrorContext;
+
+ setLoaderForLibXMLCallbacks(docLoader);
+ xmlSetGenericErrorFunc(0, errorFunc);
+
+ xmlDocPtr sourceDoc = xmlReadMemory(reinterpret_cast<const char*>(source.characters()),
+ source.length() * sizeof(UChar),
+ url.ascii(),
+ BOMHighByte == 0xFF ? "UTF-16LE" : "UTF-16BE",
+ XSLT_PARSE_OPTIONS);
+
+ setLoaderForLibXMLCallbacks(0);
+ xmlSetGenericErrorFunc(oldErrorContext, oldErrorFunc);
+
+ return sourceDoc;
+}
+#endif
+
+int XMLTokenizer::lineNumber() const
+{
+#ifndef USE_QXMLSTREAM
+ return m_context ? m_context->input->line : 1;
+#else
+ return m_stream.lineNumber();
+#endif
+}
+
+int XMLTokenizer::columnNumber() const
+{
+#ifndef USE_QXMLSTREAM
+ return m_context ? m_context->input->col : 1;
+#else
+ return m_stream.columnNumber();
+#endif
+}
+
+void XMLTokenizer::stopParsing()
+{
+ Tokenizer::stopParsing();
+#ifndef USE_QXMLSTREAM
+ xmlStopParser(m_context);
+#endif
+}
+
+void XMLTokenizer::pauseParsing()
+{
+ if (m_parsingFragment)
+ return;
+
+ m_parserPaused = true;
+}
+
+void XMLTokenizer::resumeParsing()
+{
+ ASSERT(m_parserPaused);
+
+ m_parserPaused = false;
+
+ // First, execute any pending callbacks
+#ifndef USE_QXMLSTREAM
+ while (!m_pendingCallbacks->isEmpty()) {
+ m_pendingCallbacks->callAndRemoveFirstCallback(this);
+
+ // A callback paused the parser
+ if (m_parserPaused)
+ return;
+ }
+#else
+ parse();
+ if (m_parserPaused)
+ return;
+#endif
+
+ // 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
+#ifndef USE_QXMLSTREAM
+ && m_pendingCallbacks->isEmpty())
+#else
+ )
+#endif
+ end();
+}
+
+#ifndef USE_QXMLSTREAM
+static void balancedStartElementNsHandler(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)
+{
+ static_cast<XMLTokenizer*>(closure)->startElementNs(localname, prefix, uri, nb_namespaces, namespaces, nb_attributes, nb_defaulted, libxmlAttributes);
+}
+
+static void balancedEndElementNsHandler(void* closure, const xmlChar* localname, const xmlChar* prefix, const xmlChar* uri)
+{
+ static_cast<XMLTokenizer*>(closure)->endElementNs();
+}
+
+static void balancedCharactersHandler(void* closure, const xmlChar* s, int len)
+{
+ static_cast<XMLTokenizer*>(closure)->characters(s, len);
+}
+
+static void balancedProcessingInstructionHandler(void* closure, const xmlChar* target, const xmlChar* data)
+{
+ static_cast<XMLTokenizer*>(closure)->processingInstruction(target, data);
+}
+
+static void balancedCdataBlockHandler(void* closure, const xmlChar* s, int len)
+{
+ static_cast<XMLTokenizer*>(closure)->cdataBlock(s, len);
+}
+
+static void balancedCommentHandler(void* closure, const xmlChar* comment)
+{
+ static_cast<XMLTokenizer*>(closure)->comment(comment);
+}
+
+static void balancedWarningHandler(void* closure, const char* message, ...)
+{
+ va_list args;
+ va_start(args, message);
+ static_cast<XMLTokenizer*>(closure)->error(XMLTokenizer::warning, message, args);
+ va_end(args);
+}
+#endif
+bool parseXMLDocumentFragment(const String& string, DocumentFragment* fragment, Element* parent)
+{
+ XMLTokenizer tokenizer(fragment, parent);
+
+#ifndef USE_QXMLSTREAM
+ xmlSAXHandler sax;
+ memset(&sax, 0, sizeof(sax));
+
+ sax.characters = balancedCharactersHandler;
+ sax.processingInstruction = balancedProcessingInstructionHandler;
+ sax.startElementNs = balancedStartElementNsHandler;
+ sax.endElementNs = balancedEndElementNsHandler;
+ sax.cdataBlock = balancedCdataBlockHandler;
+ sax.ignorableWhitespace = balancedCdataBlockHandler;
+ sax.comment = balancedCommentHandler;
+ sax.warning = balancedWarningHandler;
+ sax.initialized = XML_SAX2_MAGIC;
+
+ int result = xmlParseBalancedChunkMemory(0, &sax, &tokenizer, 0, (const xmlChar*)string.utf8().data(), 0);
+ return result == 0;
+#else
+ tokenizer.write(string, false);
+ tokenizer.finish();
+ return tokenizer.hasError();
+#endif
+}
+
+// --------------------------------
+
+struct AttributeParseState {
+ HashMap<String, String> attributes;
+ bool gotAttributes;
+};
+
+#ifndef USE_QXMLSTREAM
+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);
+ }
+}
+#else
+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);
+ }
+}
+#endif
+
+HashMap<String, String> parseAttributes(const String& string, bool& attrsOK)
+{
+ AttributeParseState state;
+ state.gotAttributes = false;
+
+#ifndef USE_QXMLSTREAM
+ xmlSAXHandler sax;
+ memset(&sax, 0, sizeof(sax));
+ sax.startElementNs = attributesStartElementNsHandler;
+ sax.initialized = XML_SAX2_MAGIC;
+ xmlParserCtxtPtr parser = createStringParser(&sax, &state);
+ String parseString = "<?xml version=\"1.0\"?><attrs " + string + " />";
+ xmlParseChunk(parser, reinterpret_cast<const char*>(parseString.characters()), parseString.length() * sizeof(UChar), 1);
+ if (parser->myDoc)
+ xmlFreeDoc(parser->myDoc);
+ xmlFreeParserCtxt(parser);
+#else
+ QXmlStreamReader stream;
+ QString dummy = QString("<?xml version=\"1.0\"?><attrs %1 />").arg(string);
+ stream.addData(dummy);
+ while (!stream.atEnd()) {
+ stream.readNext();
+ if (stream.isStartElement()) {
+ attributesStartElementNsHandler(&state, stream.attributes());
+ }
+ }
+#endif
+ attrsOK = state.gotAttributes;
+ return state.attributes;
+}
+
+#ifdef USE_QXMLSTREAM
+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)
+{
+ 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:") + decl.prefix();
+ newElement->setAttributeNS("http://www.w3.org/2000/xmlns/", namespaceQName, namespaceURI, ec);
+ if (ec) // exception setting attributes
+ return;
+ }
+}
+
+static inline void handleElementAttributes(Element* newElement, 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();
+ newElement->setAttributeNS(attrURI, attrQName, attrValue, ec);
+ if (ec) // exception setting attributes
+ return;
+ }
+}
+
+void XMLTokenizer::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: {
+ 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_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 XMLTokenizer::startDocument()
+{
+ initializeParserContext();
+ ExceptionCode ec = 0;
+
+ if (!m_parsingFragment)
+ m_doc->setXMLStandalone(m_stream.isStandaloneDocument(), ec);
+}
+
+void XMLTokenizer::parseStartElement()
+{
+ m_sawFirstElement = true;
+
+ exitText();
+
+ String localName = m_stream.name();
+ String uri = m_stream.namespaceUri();
+ String prefix = prefixFromQName(m_stream.qualifiedName().toString());
+
+ if (m_parsingFragment && uri.isNull()) {
+ if (!prefix.isNull())
+ uri = m_prefixToNamespaceMap.get(prefix);
+ else
+ uri = m_defaultNamespaceURI;
+ }
+
+ ExceptionCode ec = 0;
+ QualifiedName qName(prefix, localName, uri);
+ RefPtr<Element> newElement = m_doc->createElement(qName, true, ec);
+ if (!newElement) {
+ stopParsing();
+ return;
+ }
+
+ handleElementNamespaces(newElement.get(), m_stream.namespaceDeclarations(), ec);
+ if (ec) {
+ stopParsing();
+ return;
+ }
+
+ handleElementAttributes(newElement.get(), m_stream.attributes(), ec);
+ if (ec) {
+ stopParsing();
+ return;
+ }
+
+ if (newElement->hasTagName(scriptTag))
+ static_cast<HTMLScriptElement*>(newElement.get())->setCreatedByParser(true);
+
+ if (newElement->hasTagName(HTMLNames::scriptTag)
+#if ENABLE(SVG)
+ || newElement->hasTagName(SVGNames::scriptTag)
+#endif
+ )
+ m_scriptStartLine = lineNumber();
+
+ if (!m_currentNode->addChild(newElement.get())) {
+ stopParsing();
+ return;
+ }
+
+ setCurrentNode(newElement.get());
+ if (m_view && !newElement->attached())
+ newElement->attach();
+}
+
+void XMLTokenizer::parseEndElement()
+{
+ 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)
+#if ENABLE(SVG)
+ || static_cast<Element*>(n)->hasTagName(SVGNames::scriptTag)
+#endif
+ )) {
+
+
+ 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 ENABLE(SVG)
+ else if (static_cast<Element*>(n)->hasTagName(SVGNames::scriptTag))
+ scriptHref = scriptElement->getAttribute(XLinkNames::hrefAttr);
+#endif
+ 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::parseCharacters()
+{
+ if (m_currentNode->isTextNode() || enterText()) {
+ ExceptionCode ec = 0;
+ static_cast<Text*>(m_currentNode)->appendData(m_stream.text(), ec);
+ }
+}
+
+void XMLTokenizer::parseProcessingInstruction()
+{
+ exitText();
+
+ // ### handle exceptions
+ int exception = 0;
+ RefPtr<ProcessingInstruction> pi = m_doc->createProcessingInstruction(
+ m_stream.processingInstructionTarget(),
+ m_stream.processingInstructionData(), 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::parseCdata()
+{
+ exitText();
+
+ RefPtr<Node> newNode = new CDATASection(m_doc, m_stream.text());
+ if (!m_currentNode->addChild(newNode.get()))
+ return;
+ if (m_view && !newNode->attached())
+ newNode->attach();
+}
+
+void XMLTokenizer::parseComment()
+{
+ exitText();
+
+ RefPtr<Node> newNode = new Comment(m_doc, m_stream.text());
+ m_currentNode->addChild(newNode.get());
+ if (m_view && !newNode->attached())
+ newNode->attach();
+}
+
+void XMLTokenizer::endDocument()
+{
+}
+
+bool XMLTokenizer::hasError() const
+{
+ return m_stream.hasError();
+}
+
+static QString parseId(const QString &dtd, int *pos, bool *ok)
+{
+ *ok = true;
+ int start = *pos + 1;
+ int end = start;
+ if (dtd.at(*pos) == QLatin1Char('\''))
+ while (start < dtd.length() && dtd.at(end) != QLatin1Char('\''))
+ ++end;
+ else if (dtd.at(*pos) == QLatin1Char('\"'))
+ while (start < dtd.length() && dtd.at(end) != QLatin1Char('\"'))
+ ++end;
+ else {
+ *ok = false;
+ return QString();
+ }
+ *pos = end + 1;
+ return dtd.mid(start, end - start);
+}
+
+void XMLTokenizer::parseDtd()
+{
+ QString dtd = m_stream.text().toString();
+
+ int start = dtd.indexOf("<!DOCTYPE ") + 10;
+ while (start < dtd.length() && dtd.at(start).isSpace())
+ ++start;
+ int end = start;
+ while (start < dtd.length() && !dtd.at(end).isSpace())
+ ++end;
+ QString name = dtd.mid(start, end - start);
+
+ start = end;
+ while (start < dtd.length() && dtd.at(start).isSpace())
+ ++start;
+ end = start;
+ while (start < dtd.length() && !dtd.at(end).isSpace())
+ ++end;
+ QString id = dtd.mid(start, end - start);
+ start = end;
+ while (start < dtd.length() && dtd.at(start).isSpace())
+ ++start;
+ QString publicId;
+ QString systemId;
+ if (id == QLatin1String("PUBLIC")) {
+ bool ok;
+ publicId = parseId(dtd, &start, &ok);
+ if (!ok) {
+ handleError(fatal, "Invalid DOCTYPE", lineNumber(), columnNumber());
+ return;
+ }
+ while (start < dtd.length() && dtd.at(start).isSpace())
+ ++start;
+ systemId = parseId(dtd, &start, &ok);
+ if (!ok) {
+ handleError(fatal, "Invalid DOCTYPE", lineNumber(), columnNumber());
+ return;
+ }
+ } else if (id == QLatin1String("SYSTEM")) {
+ bool ok;
+ systemId = parseId(dtd, &start, &ok);
+ if (!ok) {
+ handleError(fatal, "Invalid DOCTYPE", lineNumber(), columnNumber());
+ return;
+ }
+ } else if (id == QLatin1String("[") || id == QLatin1String(">")) {
+ } else {
+ handleError(fatal, "Invalid DOCTYPE", lineNumber(), columnNumber());
+ return;
+ }
+
+ //qDebug() << dtd << name << publicId << systemId;
+ const QXmlStreamNotationDeclarations& decls = m_stream.notationDeclarations();
+
+ if ((publicId == "-//W3C//DTD XHTML 1.0 Transitional//EN")
+ || (publicId == "-//W3C//DTD XHTML 1.1//EN")
+ || (publicId == "-//W3C//DTD XHTML 1.0 Strict//EN")
+ || (publicId == "-//W3C//DTD XHTML 1.0 Frameset//EN")
+ || (publicId == "-//W3C//DTD XHTML Basic 1.0//EN")
+ || (publicId == "-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN")
+ || (publicId == "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN")
+ || (publicId == "-//WAPFORUM//DTD XHTML Mobile 1.0//EN")) {
+ setIsXHTMLDocument(true); // controls if we replace entities or not.
+ }
+ if (!m_parsingFragment)
+ m_doc->setDocType(new DocumentType(m_doc, name, publicId, systemId));
+
+}
+#endif
+}
+
+