/*
* @(#)$Id: XHTMLDocument.java 105 2008-10-29 06:22:32Z unsaved $
*
* Copyright 2008 by the JWebMail Development Team and Sebastian Schaffert.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.wastl.webmail.ui.xml;
import net.wastl.webmail.server.*;
import net.wastl.webmail.exceptions.*;
import org.w3c.dom.*;
import org.xml.sax.SAXException;
import javax.xml.transform.*;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamSource;
import javax.xml.transform.stream.StreamResult;
import java.io.*;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Constructs HTML-Documents using a Stylesheet and a XML Document.
*
* @author Sebastian Schaffert
*/
public class XHTMLDocument extends net.wastl.webmail.ui.html.HTMLDocument {
private static Log log = LogFactory.getLog(XHTMLDocument.class);
public XHTMLDocument(Document xml, String xsl) throws WebMailException {
StringWriter writer = new StringWriter();
long start_t=System.currentTimeMillis();
try {
DOMSource msg_xml=new DOMSource((Node)xml);
StreamSource msg_xsl=new StreamSource("file://"+xsl);
StreamResult msg_result=new StreamResult(writer);
TransformerFactory factory = TransformerFactory.newInstance();
Transformer processor = factory.newTransformer(msg_xsl);
//processor.setDiagnosticsOutput(System.err);
processor.transform(msg_xml,msg_result);
} catch(Exception ex) {
log.error("Error transforming XML with "+xsl+" to XHTML.");
throw new WebMailException(ex.getMessage());
}
long end_t=System.currentTimeMillis();
log.debug("Transformation XML --> XHTML took "+(end_t-start_t)+" ms.");
content=writer.toString();
}
public XHTMLDocument(Document xml, Templates stylesheet) throws WebMailException {
StringWriter writer = new StringWriter();
long start_t=System.currentTimeMillis();
try {
DOMSource msg_xml=new DOMSource((Node)xml);
StreamResult msg_result=new StreamResult(writer);
Transformer processor = stylesheet.newTransformer();
processor.transform(msg_xml,msg_result);
} catch(Exception ex) {
log.error("Error transforming XML to XHTML.", ex);
throw new WebMailException("Error transforming XML to XHTML: "
+ ex);
}
long end_t=System.currentTimeMillis();
log.debug("Transformation (with precompiled stylesheet) XML --> XHTML took "+(end_t-start_t)+" ms.");
content=writer.toString();
}
public String toString() {
return content;
}
public int length() {
return content.length();
}
}