/*
* JBoss, Home of Professional Open Source
* Copyright 2006, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.virtual.plugins.context.jar;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;
import org.jboss.virtual.VirtualFile;
import org.jboss.virtual.plugins.context.AbstractVFSContext;
import org.jboss.virtual.plugins.context.AbstractVirtualFileHandler;
import org.jboss.virtual.spi.VirtualFileHandler;
/**
* JarContext.
*
* @author Scott.Stark@jboss.org
* @author <a href="adrian@jboss.com">Adrian Brock</a>
* @version $Revision: 1.1 $
*/
public class JarContext extends AbstractVFSContext
{
/** The root file */
private final VirtualFileHandler root;
/** A reference to the virtual file of the root to stop it getting closed */
private final VirtualFile rootFile;
/**
* Create a new JarContext.
*
* @param rootURL the root url
* @throws IOException for an error accessing the file system
* @throws URISyntaxException for an error parsing the URI
*/
public JarContext(URL rootURL) throws IOException, URISyntaxException
{
super(rootURL);
root = createVirtualFileHandler(null, rootURL);
rootFile = root.getVirtualFile();
}
public String getName()
{
return root.getName();
}
public VirtualFileHandler getRoot() throws IOException
{
return root;
}
/**
* Create a new virtual file handler
*
* @param parent the parent
* @param url the url
* @return the handler
* @throws IOException for any error accessing the file system
* @throws IllegalArgumentException for a null entry or url
*/
protected VirtualFileHandler createVirtualFileHandler(VirtualFileHandler parent, URL url) throws IOException
{
if (url == null)
throw new IllegalArgumentException("Null url");
String urlStr = url.toString();
String jarName = extractJarName(urlStr);
String entryPath = urlStr;
entryPath = entryPath(entryPath);
// make sure that JarHandler.initJar works on the jar itself
if(entryPath != null)
{
String s = url.toExternalForm();
url = new URL(s.substring(0, s.length() - entryPath.length()));
}
JarHandler jar = new JarHandler(this, parent, url, jarName);
if (entryPath == null)
return jar;
// todo This is a hack until we can fix http://jira.jboss.com/jira/browse/JBMICROCONT-164
AbstractVirtualFileHandler result = (AbstractVirtualFileHandler)jar.getChild(entryPath);
if (result == null)
throw new IllegalArgumentException("Null child, entryPath: " + entryPath);
result.setPathName("");
return result;
}
public static String entryPath(String entryName)
{
int index;
index = entryName.indexOf("!/");
if (index != -1)
{
entryName = entryName.substring(index + 2);
}
else
{
entryName = null;
}
if (entryName == null || "".equals(entryName.trim()))
return null;
return entryName;
}
/**
* Extract jar name.
*
* @param urlStr the url string
* @return jar name
*/
public static String extractJarName(String urlStr)
{
String jarName = urlStr;
int index = jarName.indexOf('!');
if (index != -1)
jarName = jarName.substring(0, index);
index = jarName.lastIndexOf('/');
if (index != -1 && index < jarName.length()-1)
jarName = jarName.substring(index+1);
return jarName;
}
@Override
protected void finalize() throws Throwable
{
if (rootFile != null)
rootFile.close();
super.finalize();
}
}