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Java > Open Source Codes > com > jeantessier > dependencyfinder > cli > ClassDump


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.dependencyfinder.cli;
34
35 import java.io.*;
36
37 import com.jeantessier.dependencyfinder.*;
38
39 public class ClassDump {
40     public static void main(String JavaDoc[] args) throws Exception JavaDoc {
41         if (args.length == 0) {
42             System.out.println(ClassDump.class.getName() + ":");
43             dumpClass(ClassDump.class);
44         } else {
45             for (int i=0; i<args.length; i++) {
46                 System.out.println(args[i] + ":");
47                 dumpClass(args[i]);
48             }
49         }
50     }
51
52     public static void dumpClass(String JavaDoc classname) throws ClassNotFoundException JavaDoc, IOException {
53         dumpClass(Class.forName(classname));
54     }
55
56     public static void dumpClass(Class JavaDoc c) throws IOException {
57         String JavaDoc resource = c.getName().substring(c.getName().lastIndexOf(".") + 1) + ".class";
58         System.out.println(resource + " -> " + c.getResource(resource));
59         dumpClass(c.getResourceAsStream(resource));
60     }
61
62     public static void dumpClass(InputStream in) throws IOException {
63         dumpClass(new DataInputStream(in));
64     }
65
66     public static void dumpClass(DataInputStream in) {
67         int count = 0;
68         try {
69             while (true) {
70                 byte b = in.readByte();
71         
72                 Hex.print(System.out, b);
73
74                 count++;
75
76                 if ((count % 4) == 0) {
77                     System.out.print(' ');
78                 }
79         
80                 if ((count % 32) == 0) {
81                     System.out.println();
82                     count = 0;
83                 }
84             }
85         } catch (IOException ex) {
86             // Ignore
87 } finally {
88             System.out.println();
89         }
90     }
91 }
92
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