WebCore/xml/XSLTProcessor.cpp
changeset 0 4f2f89ce4247
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/xml/XSLTProcessor.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,171 @@
+/*
+ * 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 "DocLoader.h"
+#include "DocumentFragment.h"
+#include "Frame.h"
+#include "FrameLoader.h"
+#include "FrameView.h"
+#include "HTMLDocument.h"
+#include "Page.h"
+#include "Text.h"
+#include "TextResourceDecoder.h"
+#include "loader.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";
+}
+
+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->finishParsing();
+    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")
+        fragment->parseHTML(sourceString);
+    else if (sourceMIMEType == "text/plain")
+        fragment->legacyParserAddChild(Text::create(outputDoc, sourceString));
+    else {
+        bool successfulParse = fragment->parseXML(sourceString, outputDoc->documentElement());
+        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)