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Java > Open Source Codes > proguard > ArgumentWordReader


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;
22
23 import java.io.*;
24
25
26 /**
27  * A <code>WordReader</code> that returns words from an argument list.
28  * Single arguments are split into individual words if necessary.
29  *
30  * @author Eric Lafortune
31  */
32 public class ArgumentWordReader extends WordReader
33 {
34     private String JavaDoc[] arguments;
35     private int index = 0;
36
37
38 // /**
39 // * Creates a new ArgumentWordReader for the given arguments.
40 // */
41 // public ArgumentWordReader(String[] arguments)
42 // {
43 // this(arguments, null);
44 // }
45 //
46 //
47 /**
48      * Creates a new ArgumentWordReader for the given arguments, with the
49      * given base directory.
50      */
51     public ArgumentWordReader(String JavaDoc[] arguments, File baseDir)
52     {
53         super(baseDir);
54
55         this.arguments = arguments;
56     }
57
58
59     // Implementations for WordReader.
60
61     protected String JavaDoc nextLine() throws IOException
62     {
63         return index < arguments.length ?
64             arguments[index++] :
65             null;
66     }
67
68
69     protected String JavaDoc lineLocationDescription()
70     {
71         return "argument number " + index;
72     }
73
74
75     /**
76      * Test application that prints out the individual words of
77      * the argument list.
78      */
79     public static void main(String JavaDoc[] args) {
80
81         try
82         {
83             WordReader reader = new ArgumentWordReader(args, null);
84
85             try
86             {
87                 while (true)
88                 {
89                     String JavaDoc word = reader.nextWord();
90                     if (word == null)
91                         System.exit(-1);
92
93                     System.err.println("["+word+"]");
94                 }
95             }
96             catch (Exception JavaDoc ex)
97             {
98                 ex.printStackTrace();
99             }
100             finally
101             {
102                 reader.close();
103             }
104         }
105         catch (IOException ex)
106         {
107             ex.printStackTrace();
108         }
109     }
110 }
111
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