1 package fr.free.miniupnp.libnatpmp;
2 
3 /** I (Leah X Schmidt) copied this code from jnaerator, because
4 JNAerator's extractor requires you to buy into the whole JNA
5 concept.
6 
7 JNAErator is
8 Copyright (c) 2009 Olivier Chafik, All Rights Reserved
9 
10 JNAerator is free software: you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation, either version 3 of the License, or
13 (at your option) any later version.
14 
15 JNAerator is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18 GNU General Public License for more details.
19 
20 You should have received a copy of the GNU General Public License
21 along with JNAerator.  If not, see <http://www.gnu.org/licenses/>.
22 
23 */
24 
25 import java.io.File;
26 import java.io.IOException;
27 import java.io.InputStream;
28 import java.net.URL;
29 import java.util.ArrayList;
30 import java.util.List;
31 import java.util.jar.JarEntry;
32 import java.util.jar.JarInputStream;
33 
34 public class URLUtils {
35 
getResource(Class<?> cl, String path)36     public static URL getResource(Class<?> cl, String path) throws IOException {
37         String clp = cl.getName().replace('.', '/') + ".class";
38         URL clu = cl.getClassLoader().getResource(clp);
39         String s = clu.toString();
40         if (s.endsWith(clp))
41             return new URL(s.substring(0, s.length() - clp.length()) + path);
42 
43         if (s.startsWith("jar:")) {
44             String[] ss = s.split("!");
45             return new URL(ss[1] + "!/" + path);
46         }
47         return null;
48     }
49 
listFiles(URL directory)50     public static List<URL> listFiles(URL directory) throws IOException {
51         List<URL> ret = new ArrayList<URL>();
52         String s = directory.toString();
53         if (s.startsWith("jar:")) {
54             String[] ss = s.substring("jar:".length()).split("!");
55             String path = ss[1];
56             URL target = new URL(ss[0]);
57             InputStream tin = target.openStream();
58             try {
59                 JarInputStream jin = new JarInputStream(tin);
60                 JarEntry je;
61                 while ((je = jin.getNextJarEntry()) != null) {
62                     String p = "/" + je.getName();
63                     if (p.startsWith(path) && p.indexOf('/', path.length() + 1) < 0)
64 
65                       ret.add(new URL("jar:" + target + "!" + p));
66                 }
67             } finally {
68                 tin.close();
69             }
70         } else if (s.startsWith("file:")) {
71             File f = new File(directory.getFile());
72             File[] ffs = f.listFiles();
73             if (ffs != null)
74                 for (File ff : ffs)
75                     ret.add(ff.toURI().toURL());
76         } else
77             throw new IOException("Cannot list contents of " + directory);
78 
79         return ret;
80     }
81 }