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Java > Open Source Codes > org > netbeans > modules > lexer > gen > antlr > AntlrUnicodeRanges


1 /*
2  * The contents of this file are subject to the terms of the Common Development
3  * and Distribution License (the License). You may not use this file except in
4  * compliance with the License.
5  *
6  * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7  * or http://www.netbeans.org/cddl.txt.
8  *
9  * When distributing Covered Code, include this CDDL Header Notice in each file
10  * and include the License file at http://www.netbeans.org/cddl.txt.
11  * If applicable, add the following below the CDDL Header, with the fields
12  * enclosed by brackets [] replaced by your own identifying information:
13  * "Portions Copyrighted [year] [name of copyright owner]"
14  *
15  * The Original Software is NetBeans. The Initial Developer of the Original
16  * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19
20 package org.netbeans.modules.lexer.gen.antlr;
21
22 import org.netbeans.modules.lexer.gen.util.UnicodeRanges;
23
24 /**
25  * Program that writes Unicode character ranges to the output
26  * depending on the method being used.
27  *
28  * @author Miloslav Metelka
29  * @version 1.00
30  */
31
32 public class AntlrUnicodeRanges extends UnicodeRanges {
33
34     public static String JavaDoc findRangesDescription(int testedMethod, int indent) {
35         StringBuffer JavaDoc sb = new StringBuffer JavaDoc();
36         char[] ranges = findRanges(testedMethod);
37         for (int i = 0; i < ranges.length;) {
38             if (i > 0) {
39                 sb.append('\n');
40             }
41             indent(sb, indent);
42             sb.append((i > 0) ? '|' : ':');
43             sb.append(' ');
44             int rangeStart = ranges[i++];
45             int rangeEnd = ranges[i++];
46             appendUnicodeChar(sb, (char)rangeStart, '\'');
47             if (rangeStart < rangeEnd) { // interval
48 sb.append("..");
49                 appendUnicodeChar(sb, (char)(rangeEnd), '\'');
50             }
51         }
52         
53         return sb.toString();
54     }
55     
56     public static void main(String JavaDoc[] args) {
57         if (args.length < 2) {
58             System.err.println(usage());
59         }
60
61         System.out.println(findRangesDescription(
62             Integer.parseInt(args[0]),
63             Integer.parseInt(args[1])
64         ));
65     }
66
67 }
68
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