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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('&', "&amp;");
+ text.replace('<', "&lt;");
+ 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);
+ }
+
+ result->open();
+
+ RefPtr<TextResourceDecoder> decoder = TextResourceDecoder::create(sourceMIMEType);
+ decoder->setEncoding(sourceEncoding.isEmpty() ? UTF8Encoding() : TextEncoding(sourceEncoding), TextResourceDecoder::EncodingFromXMLHeader);
+ result->setDecoder(decoder.release());
+
+ result->write(documentSource);
+ result->close();
+
+ 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)