/*
** Rachel  - Resource Loading Toolkit for Web Start/JNLP
** Copyright (c) 2001, 2002 by Gerald Bauer
**
** This program is free software.
**
** You may redistribute it and/or modify it under the terms of the GNU
** General Public License as published by the Free Software Foundation.
** Version 2 of the license should be included with this distribution in
** the file LICENSE, as well as License.html. If the license is not
** included with this distribution, you may find a copy at the FSF web
** site at 'www.gnu.org' or 'www.fsf.org', or you may write to the
** Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
**
** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
** REDISTRIBUTION OF THIS SOFTWARE.
**
*/

package rachel.loader;

import java.io.*;
import java.net.*;
import java.util.*;
import java.util.jar.*;
import rachel.*;
import rachel.util.*;

public class JarResourceLoader implements ResourceLoader
{
   private ResourceLoader _delegate;

   public JarResourceLoader( URL url ) throws IOException
   {
      URLConnection con = url.openConnection();

      InputStream in = con.getInputStream();

      File file = File.createTempFile( "rachel-", null );
      FileUtils.saveStreamToFile( in, file );
      JarFile jarFile = new JarFile( file, false );
      // don't verify jar

      init( file, jarFile );
   }

   public JarResourceLoader( File file ) throws IOException
   {
      JarFile jarFile = new JarFile( file, false );
      // don't verify jar
      init( file, jarFile );
   }

   public InputStream getResourceAsStream( String name )
   {
      return _delegate.getResourceAsStream( name );
   }

   public URL getResourceAsUrl( String name )
   {
      return _delegate.getResourceAsUrl( name );
   }

   private void init( File file, JarFile jarFile )
   {
      _delegate = new JarResourceLoaderHelper( file, jarFile );
   }
}