1 package org.codehaus.classworlds.uberjar.protocol.jar;
2
3 /*
4 $Id: Handler.java 115 2005-07-03 15:23:59Z jvanzyl $
5
6 Copyright 2002 (C) The Werken Company. All Rights Reserved.
7
8 Redistribution and use of this software and associated documentation
9 ("Software"), with or without modification, are permitted provided
10 that the following conditions are met:
11
12 1. Redistributions of source code must retain copyright
13 statements and notices. Redistributions must also contain a
14 copy of this document.
15
16 2. Redistributions in binary form must reproduce the
17 above copyright notice, this list of conditions and the
18 following disclaimer in the documentation and/or other
19 materials provided with the distribution.
20
21 3. The name "classworlds" must not be used to endorse or promote
22 products derived from this Software without prior written
23 permission of The Werken Company. For written permission,
24 please contact bob@werken.com.
25
26 4. Products derived from this Software may not be called "classworlds"
27 nor may "classworlds" appear in their names without prior written
28 permission of The Werken Company. "classworlds" is a registered
29 trademark of The Werken Company.
30
31 5. Due credit should be given to The Werken Company.
32 (http://classworlds.werken.com/).
33
34 THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS
35 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
36 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
37 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
38 THE WERKEN COMPANY OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
39 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
40 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
41 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
42 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
43 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
44 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
45 OF THE POSSIBILITY OF SUCH DAMAGE.
46
47 */
48
49 import java.io.IOException;
50 import java.net.URL;
51 import java.net.URLConnection;
52 import java.net.URLStreamHandler;
53
54 /**
55 * This is copied from Classwords 1.1 org.codehaus.classworlds.uberjar.protocol.jar.Handler
56 * so that an additional dependency does not need to be added to plugins. The formatting is left as is to reduce
57 * the diff.
58 */
59 public class NonLockingJarHandler
60 extends URLStreamHandler {
61 // ----------------------------------------------------------------------
62 // Class members
63 // ----------------------------------------------------------------------
64
65 /**
66 * Singleton instance.
67 */
68 private static final NonLockingJarHandler INSTANCE = new NonLockingJarHandler();
69
70 // ----------------------------------------------------------------------
71 // Class methods
72 // ----------------------------------------------------------------------
73
74 /**
75 * Retrieve the singleton instance.
76 *
77 * @return The singleton instance.
78 */
79 public static NonLockingJarHandler getInstance() {
80 return INSTANCE;
81 }
82
83 // ----------------------------------------------------------------------
84 // Constructors
85 // ----------------------------------------------------------------------
86
87
88 /**
89 * Construct.
90 */
91 public NonLockingJarHandler() {
92 // intentionally left blank
93 }
94
95 // ----------------------------------------------------------------------
96 // Instance methods
97 // ----------------------------------------------------------------------
98
99 /**
100 * @see java.net.URLStreamHandler
101 */
102 public URLConnection openConnection(URL url)
103 throws IOException {
104 return new NonLockingJarUrlConnection(url);
105 }
106
107 /**
108 * @see java.net.URLStreamHandler
109 */
110 public void parseURL(URL url,
111 String spec,
112 int start,
113 int limit) {
114 String specPath = spec.substring(start,
115 limit);
116
117 String urlPath = null;
118
119 if (specPath.charAt(0) == '/') {
120 urlPath = specPath;
121 } else if (specPath.charAt(0) == '!') {
122 String relPath = url.getFile();
123
124 int bangLoc = relPath.lastIndexOf("!");
125
126 if (bangLoc < 0) {
127 urlPath = relPath + specPath;
128 } else {
129 urlPath = relPath.substring(0,
130 bangLoc) + specPath;
131 }
132 } else {
133 String relPath = url.getFile();
134
135 if (relPath != null) {
136 int lastSlashLoc = relPath.lastIndexOf("/");
137
138 if (lastSlashLoc < 0) {
139 urlPath = "/" + specPath;
140 } else {
141 urlPath = relPath.substring(0,
142 lastSlashLoc + 1) + specPath;
143 }
144 } else {
145 urlPath = specPath;
146 }
147 }
148
149 setURL(url,
150 "jar",
151 "",
152 0,
153 null,
154 null,
155 urlPath,
156 null,
157 null);
158 }
159 }