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