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Java > Open Source Codes > proguard > obfuscate > SpecialNameFactory


1 /*
2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
3  * of Java bytecode.
4  *
5  * Copyright (c) 2002-2007 Eric Lafortune (eric@graphics.cornell.edu)
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License as published by the Free
9  * Software Foundation; either version 2 of the License, or (at your option)
10  * any later version.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with this program; if not, write to the Free Software Foundation, Inc.,
19  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */
21 package proguard.obfuscate;
22
23 import java.io.*;
24 import java.util.*;
25
26 /**
27  * This <code>NameFactory</code> generates names that are special, by appending
28  * a suffix.
29  *
30  * @author Eric Lafortune
31  */
32 public class SpecialNameFactory implements NameFactory
33 {
34     private static final char SPECIAL_SUFFIX = '_';
35
36
37     private final NameFactory nameFactory;
38
39
40     /**
41      * Creates a new <code>SpecialNameFactory</code>.
42      * @param nameFactory the name factory from which original names will be
43      * retrieved.
44      */
45     public SpecialNameFactory(NameFactory nameFactory)
46     {
47         this.nameFactory = nameFactory;
48     }
49
50
51     // Implementations for NameFactory.
52
53     public void reset()
54     {
55         nameFactory.reset();
56     }
57
58
59     public String JavaDoc nextName()
60     {
61         return nameFactory.nextName() + SPECIAL_SUFFIX;
62     }
63
64
65     // Small utility methods.
66
67     /**
68      * Returns whether the given name is special.
69      */
70     static boolean isSpecialName(String JavaDoc name)
71     {
72         return name != null &&
73                name.charAt(name.length()-1) == SPECIAL_SUFFIX;
74     }
75
76
77     public static void main(String JavaDoc[] args)
78     {
79         SpecialNameFactory factory = new SpecialNameFactory(new SimpleNameFactory());
80
81         for (int counter = 0; counter < 50; counter++)
82         {
83             System.out.println("["+factory.nextName()+"]");
84         }
85     }
86 }
87
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