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Java > Open Source Codes > com > jeantessier > classreader > JarClassfileLoader


1 /*
2  * Copyright (c) 2001-2005, Jean Tessier
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * * Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  *
12  * * Redistributions in binary form must reproduce the above copyright
13  * notice, this list of conditions and the following disclaimer in the
14  * documentation and/or other materials provided with the distribution.
15  *
16  * * Neither the name of Jean Tessier nor the names of his contributors
17  * may be used to endorse or promote products derived from this software
18  * without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32
33 package com.jeantessier.classreader;
34
35 import java.io.*;
36 import java.util.*;
37 import java.util.jar.*;
38
39 import org.apache.log4j.*;
40
41 public class JarClassfileLoader extends ZipClassfileLoader {
42     public JarClassfileLoader(ClassfileLoader loader) {
43         super(loader);
44     }
45
46     protected void load(String JavaDoc filename) {
47         Logger.getLogger(getClass()).debug("Reading " + filename);
48
49         JarFile jarfile = null;
50         try {
51             jarfile = new JarFile(filename);
52
53             fireBeginGroup(filename, jarfile.size());
54             load(jarfile);
55             fireEndGroup(filename);
56         } catch (IOException ex) {
57             Logger.getLogger(getClass()).error("Cannot load JAR file \"" + filename + "\"", ex);
58         } finally {
59             if (jarfile != null) {
60                 try {
61                     jarfile.close();
62                 } catch (IOException ex) {
63                     // Ignore
64 }
65             }
66         }
67     }
68
69     protected void load(String JavaDoc filename, InputStream in) {
70         Logger.getLogger(getClass()).debug("Reading " + filename);
71         
72         JarInputStream jarfile = null;
73         try {
74             jarfile = new JarInputStream(in);
75
76             fireBeginGroup(filename, -1);
77             load(jarfile);
78             fireEndGroup(filename);
79         } catch (IOException ex) {
80             Logger.getLogger(getClass()).error("Cannot load JAR file \"" + filename + "\"", ex);
81         } finally {
82             if (jarfile != null) {
83                 try {
84                     jarfile.close();
85                 } catch (IOException ex) {
86                     // Ignore
87 }
88             }
89         }
90     }
91 }
92
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