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Java > Open Source Codes > com > caucho > vfs > JarScheme


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.vfs;
30
31 import java.util.Map JavaDoc;
32
33 /**
34  * JarScheme implements the lookup of the jar scheme.
35  */
36 public class JarScheme extends FilesystemPath {
37   JarScheme(String JavaDoc path)
38   {
39     super(null, "/", "/");
40   }
41
42   /**
43    * Lookup the path, handling windows weirdness
44    */
45   protected Path schemeWalk(String JavaDoc userPath,
46                             Map JavaDoc<String JavaDoc,Object JavaDoc> attributes,
47                 String JavaDoc filePath,
48                             int offset)
49   {
50     int p = filePath.indexOf('!', offset);
51     String JavaDoc backingPath;
52     String JavaDoc jarPath;
53
54     if (p > 0) {
55       backingPath = filePath.substring(offset, p);
56       jarPath = filePath.substring(p + 1);
57     }
58     else {
59       backingPath = filePath.substring(offset);
60       jarPath = "";
61     }
62
63     Path backing = Vfs.lookup(backingPath);
64
65     return JarPath.create(backing).lookup(jarPath);
66   }
67   
68   public Path fsWalk(String JavaDoc userPath,
69             Map JavaDoc<String JavaDoc,Object JavaDoc> attributes,
70             String JavaDoc path)
71   {
72     return schemeWalk(userPath, attributes, path, 0);
73   }
74
75   public String JavaDoc getScheme()
76   {
77     return "jar";
78   }
79 }
80
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