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/*
* This file is part of the XSL implementation.
*
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple, Inc. All rights reserved.
* Copyright (C) 2005, 2006 Alexey Proskuryakov <ap@webkit.org>
*
* 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"
#if ENABLE(XSLT)
#include "XSLTProcessor.h"
#include "DOMImplementation.h"
#include "CachedResourceLoader.h"
#include "DocumentFragment.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameView.h"
#include "HTMLBodyElement.h"
#include "HTMLDocument.h"
#include "Page.h"
#include "Text.h"
#include "TextResourceDecoder.h"
#include "markup.h"
#include <wtf/Assertions.h>
#include <wtf/Vector.h>
namespace WebCore {
static inline void transformTextStringToXHTMLDocumentString(String& text)
{
// Modify the output so that it is a well-formed XHTML document with a <pre> tag enclosing the text.
text.replace('&', "&");
text.replace('<', "<");
text = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n"
"<html xmlns=\"http://www.w3.org/1999/xhtml\">\n"
"<head><title/></head>\n"
"<body>\n"
"<pre>" + text + "</pre>\n"
"</body>\n"
"</html>\n";
}
XSLTProcessor::~XSLTProcessor()
{
// Stylesheet shouldn't outlive its root node.
ASSERT(!m_stylesheetRootNode || !m_stylesheet || m_stylesheet->hasOneRef());
}
PassRefPtr<Document> XSLTProcessor::createDocumentFromSource(const String& sourceString,
const String& sourceEncoding, const String& sourceMIMEType, Node* sourceNode, Frame* frame)
{
RefPtr<Document> ownerDocument = sourceNode->document();
bool sourceIsDocument = (sourceNode == ownerDocument.get());
String documentSource = sourceString;
RefPtr<Document> result;
if (sourceMIMEType == "text/plain") {
result = Document::create(frame, sourceIsDocument ? ownerDocument->url() : KURL());
transformTextStringToXHTMLDocumentString(documentSource);
} else
result = DOMImplementation::createDocument(sourceMIMEType, frame, sourceIsDocument ? ownerDocument->url() : KURL(), false);
// Before parsing, we need to save & detach the old document and get the new document
// in place. We have to do this only if we're rendering the result document.
if (frame) {
if (FrameView* view = frame->view())
view->clear();
result->setTransformSourceDocument(frame->document());
frame->setDocument(result);
}
RefPtr<TextResourceDecoder> decoder = TextResourceDecoder::create(sourceMIMEType);
decoder->setEncoding(sourceEncoding.isEmpty() ? UTF8Encoding() : TextEncoding(sourceEncoding), TextResourceDecoder::EncodingFromXMLHeader);
result->setDecoder(decoder.release());
result->setContent(documentSource);
return result.release();
}
static inline RefPtr<DocumentFragment> createFragmentFromSource(const String& sourceString, const String& sourceMIMEType, Document* outputDoc)
{
RefPtr<DocumentFragment> fragment = outputDoc->createDocumentFragment();
if (sourceMIMEType == "text/html") {
// As far as I can tell, there isn't a spec for how transformToFragment
// is supposed to work. Based on the documentation I can find, it looks
// like we want to start parsing the fragment in the InBody insertion
// mode. Unfortunately, that's an implementation detail of the parser.
// We achieve that effect here by passing in a fake body element as
// context for the fragment.
RefPtr<HTMLBodyElement> fakeBody = HTMLBodyElement::create(outputDoc);
fragment->parseHTML(sourceString, fakeBody.get());
} else if (sourceMIMEType == "text/plain")
fragment->parserAddChild(Text::create(outputDoc, sourceString));
else {
bool successfulParse = fragment->parseXML(sourceString, 0);
if (!successfulParse)
return 0;
}
// FIXME: Do we need to mess with URLs here?
return fragment;
}
PassRefPtr<Document> XSLTProcessor::transformToDocument(Node* sourceNode)
{
String resultMIMEType;
String resultString;
String resultEncoding;
if (!transformToString(sourceNode, resultMIMEType, resultString, resultEncoding))
return 0;
return createDocumentFromSource(resultString, resultEncoding, resultMIMEType, sourceNode, 0);
}
PassRefPtr<DocumentFragment> XSLTProcessor::transformToFragment(Node* sourceNode, Document* outputDoc)
{
String resultMIMEType;
String resultString;
String resultEncoding;
// If the output document is HTML, default to HTML method.
if (outputDoc->isHTMLDocument())
resultMIMEType = "text/html";
if (!transformToString(sourceNode, resultMIMEType, resultString, resultEncoding))
return 0;
return createFragmentFromSource(resultString, resultMIMEType, outputDoc);
}
void XSLTProcessor::setParameter(const String& /*namespaceURI*/, const String& localName, const String& value)
{
// FIXME: namespace support?
// should make a QualifiedName here but we'd have to expose the impl
m_parameters.set(localName, value);
}
String XSLTProcessor::getParameter(const String& /*namespaceURI*/, const String& localName) const
{
// FIXME: namespace support?
// should make a QualifiedName here but we'd have to expose the impl
return m_parameters.get(localName);
}
void XSLTProcessor::removeParameter(const String& /*namespaceURI*/, const String& localName)
{
// FIXME: namespace support?
m_parameters.remove(localName);
}
void XSLTProcessor::reset()
{
m_stylesheet.clear();
m_stylesheetRootNode.clear();
m_parameters.clear();
}
} // namespace WebCore
#endif // ENABLE(XSLT)
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