package org.codehaus.plexus.resource.loader;
/*
* The MIT License
*
* Copyright (c) 2004, The Codehaus
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.JarURLConnection;
import java.net.URI;
import java.net.URL;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import org.codehaus.plexus.resource.PlexusResource;
/**
* A small wrapper around a Jar
*
* @author <a href="mailto:daveb@miceda-data.com">Dave Bryson</a>
* @author Jason van Zyl
* @version $Id: JarHolder.java 8366 2009-08-31 23:03:15Z jdcasey $
*/
public class JarHolder
{
private String urlpath = null;
private JarFile theJar = null;
private JarURLConnection conn = null;
public JarHolder( String urlpath )
{
this.urlpath = urlpath;
init();
}
public void init()
{
try
{
URL url = new URL( urlpath );
conn = (JarURLConnection) url.openConnection();
conn.setAllowUserInteraction( false );
conn.setDoInput( true );
conn.setDoOutput( false );
conn.connect();
theJar = conn.getJarFile();
}
catch ( IOException ioe )
{
}
}
public void close()
{
try
{
theJar.close();
}
catch ( Exception e )
{
}
theJar = null;
conn = null;
}
public InputStream getResource( String theentry )
throws ResourceNotFoundException
{
InputStream data = null;
try
{
JarEntry entry = theJar.getJarEntry( theentry );
if ( entry != null )
{
data = theJar.getInputStream( entry );
}
}
catch ( Exception fnfe )
{
throw new ResourceNotFoundException( fnfe.getMessage() );
}
return data;
}
public Hashtable getEntries()
{
Hashtable allEntries = new Hashtable( 559 );
Enumeration all = theJar.entries();
while ( all.hasMoreElements() )
{
JarEntry je = (JarEntry) all.nextElement();
// We don't map plain directory entries
if ( !je.isDirectory() )
{
allEntries.put( je.getName(), this.urlpath );
}
}
return allEntries;
}
public String getUrlPath()
{
return urlpath;
}
public PlexusResource getPlexusResource( final String name )
{
final JarEntry entry = theJar.getJarEntry( name );
if ( entry == null )
{
return null;
}
return new PlexusResource()
{
public File getFile()
throws IOException
{
return null;
}
public InputStream getInputStream()
throws IOException
{
return theJar.getInputStream( entry );
}
public String getName()
{
return conn.getURL() + name;
}
public URI getURI()
throws IOException
{
return null;
}
public URL getURL()
throws IOException
{
return new URL( conn.getJarFileURL(), name );
}
};
}
}