/*
* JBoss, Home of Professional Open Source.
* Copyright 2000 - 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.cache.config.parsing;
import org.jboss.cache.util.FileLookup;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
* Class used for converting a config file from from 2.x version to 3.x verison.
*
* @author Mircea.Markus@jboss.com
* @since 3.0
*/
public class ConfigFilesConvertor
{
/**
* Writes to the <b>os</b> the 3.x configuration file resulted by transforming the 2.x configuration file passed in
* as <b>is</b>. Transformation is performed according to the <b>xsltFile</b>. The xslt file is looked up using a
* {@link org.jboss.cache.util.FileLookup}
*/
public void parse(InputStream is, OutputStream os, String xsltFile) throws Exception
{
InputStream xsltInStream = new FileLookup().lookupFile(xsltFile);
Document document = getInputDocument(is);
// Use a Transformer for output
Transformer transformer = getTransformer(xsltInStream);
DOMSource source = new DOMSource(document);
StreamResult result = new StreamResult(os);
transformer.transform(source, result);
xsltInStream.close();
}
/**
* Writes to the <b>os</b> the 3.x configuration file resulted by transforming the 2.x configuration file passed in
* as <b>inputFile</b>. Transformation is performed according to the <b>xsltFile</b>. Both <b>inputFile</b> and he xslt
* file are looked up using a {@link org.jboss.cache.util.FileLookup}
*/
public void parse(String inputFile, OutputStream os, String xsltFile) throws Exception
{
InputStream stream = new FileLookup().lookupFile(inputFile);
try
{
parse(stream, os, xsltFile);
}
finally
{
stream.close();
}
}
/**
* usage : java org.jboss.cache.config.parsing.ConfigFilesConvertor -Dsource=config-2.x.xml -Ddestination=config-3.x.xnl
*/
public static void main(String[] argv) throws Exception
{
String sourceName = System.getProperty("source");
if (sourceName == null)
{
System.err.println("Missing property 'source'.");
System.exit(1);
}
String destinationName = System.getProperty("destination");
if (destinationName == null)
{
System.err.println("Missing property 'destination'.");
System.exit(1);
}
File oldConfig = new File(sourceName);
if (!oldConfig.exists())
{
System.err.println("File specified as input ('" + sourceName + ") does not exist.");
System.exit(1);
}
ConfigFilesConvertor convertor = new ConfigFilesConvertor();
File destination = new File(destinationName);
if (!destination.exists()) destination.createNewFile();
FileInputStream is = new FileInputStream(oldConfig);
FileOutputStream fos = new FileOutputStream(destinationName);
convertor.parse(is, fos, "config2to3.xslt");
is.close();
System.out.println("File successfully created.");
}
private Transformer getTransformer(InputStream xsltInStream)
throws TransformerConfigurationException
{
TransformerFactory tFactory = TransformerFactory.newInstance();
StreamSource stylesource = new StreamSource(xsltInStream);
return tFactory.newTransformer(stylesource);
}
private Document getInputDocument(InputStream is)
throws ParserConfigurationException, SAXException, IOException
{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
return builder.parse(is);
}
}