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Java > Open Source Codes > caramel > util > ClassUtils


1 /*
2 ** Caramel - Non-GUI Java Addons
3 ** Copyright (c) 2001, 2002, 2003 by Gerald Bauer
4 **
5 ** This program is free software.
6 **
7 ** You may redistribute it and/or modify it under the terms of the GNU
8 ** Lesser General Public License as published by the Free Software Foundation.
9 ** Version 2.1 of the license should be included with this distribution in
10 ** the file LICENSE, as well as License.html. If the license is not
11 ** included with this distribution, you may find a copy at the FSF web
12 ** site at 'www.gnu.org' or 'www.fsf.org', or you may write to the
13 ** Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
14 **
15 ** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
16 ** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
17 ** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
18 ** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
19 ** REDISTRIBUTION OF THIS SOFTWARE.
20 **
21 */
22
23 package caramel.util;
24
25 import java.net.*;
26 import houston.*;
27
28 public class ClassUtils
29 {
30    static Logger T = Logger.getLogger( ClassUtils.class );
31
32    public static String JavaDoc getJarFileName( Class JavaDoc clazz )
33    {
34       String JavaDoc className = clazz.getName();
35       T.debug( "className=" + className );
36
37       className = className.replace( '.', '/' );
38
39       T.debug( "className=" + className );
40       className += ".class";
41       T.debug( "className=" + className );
42
43       URL jarUrl = clazz.getClassLoader().getResource( className );
44
45       String JavaDoc jarUrlString = jarUrl.toExternalForm();
46
47       T.debug( "jarUrlString=" + jarUrlString );
48
49       int from = "jar:file:".length();
50       int to = jarUrlString.indexOf( "!/" );
51
52       return jarUrlString.substring( from, to );
53    }
54 }
55
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