/**
* 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
}