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Java > Open Source Codes > com > quadcap > util > text > OctetMap


1 package com.quadcap.util.text;
2
3 /* Copyright 1997 - 2003 Quadcap Software. All rights reserved.
4  *
5  * This software is distributed under the Quadcap Free Software License.
6  * This software may be used or modified for any purpose, personal or
7  * commercial. Open Source redistributions are permitted. Commercial
8  * redistribution of larger works derived from, or works which bundle
9  * this software requires a "Commercial Redistribution License"; see
10  * http://www.quadcap.com/purchase.
11  *
12  * Redistributions qualify as "Open Source" under one of the following terms:
13  *
14  * Redistributions are made at no charge beyond the reasonable cost of
15  * materials and delivery.
16  *
17  * Redistributions are accompanied by a copy of the Source Code or by an
18  * irrevocable offer to provide a copy of the Source Code for up to three
19  * years at the cost of materials and delivery. Such redistributions
20  * must allow further use, modification, and redistribution of the Source
21  * Code under substantially the same terms as this license.
22  *
23  * Redistributions of source code must retain the copyright notices as they
24  * appear in each source code file, these license terms, and the
25  * disclaimer/limitation of liability set forth as paragraph 6 below.
26  *
27  * Redistributions in binary form must reproduce this Copyright Notice,
28  * these license terms, and the disclaimer/limitation of liability set
29  * forth as paragraph 6 below, in the documentation and/or other materials
30  * provided with the distribution.
31  *
32  * The Software is provided on an "AS IS" basis. No warranty is
33  * provided that the Software is free of defects, or fit for a
34  * particular purpose.
35  *
36  * Limitation of Liability. Quadcap Software shall not be liable
37  * for any damages suffered by the Licensee or any third party resulting
38  * from use of the Software.
39  */
40
41 /**
42  * Simple byte membership tables for 8-bit text.
43  *
44  * @author Stan Bailes
45  */
46 public class OctetMap {
47     boolean[] isValid = new boolean[256];
48
49     public static OctetMap tokenChars;
50     public static OctetMap uriChars;
51     public static OctetMap numberChars;
52     public static OctetMap fieldValueChars;
53     public static OctetMap wsChars;
54     public static OctetMap crlfChars;
55
56     public static OctetMap dquoteChar = new OctetMap('"');
57
58     static {
59     tokenChars = new OctetMap(32, 126);
60     tokenChars.exclude("()<>@,;:\\\"/[]?={} ");
61
62     uriChars = new OctetMap(0, 255);
63     uriChars.exclude("? \r\n");
64
65     numberChars = new OctetMap('0', '9');
66     numberChars.include('.', '.');
67
68     fieldValueChars = new OctetMap(32, 126);
69
70     wsChars = new OctetMap(' ');
71     wsChars.include('\t');
72
73     crlfChars = new OctetMap('\r');
74     crlfChars.include('\n');
75     }
76     
77     public OctetMap(int c) {
78     include(c);
79     }
80
81     public OctetMap(int start, int end) {
82     include(start, end);
83     }
84
85     public OctetMap(String JavaDoc s) {
86         include(s);
87     }
88
89     public void include(int start, int end) {
90     for (int i = start; i <= end; i++) isValid[i] = true;
91     }
92
93     public void include(int c) {
94     isValid[c] = true;
95     }
96
97     public void exclude(int start, int end) {
98     for (int i = start; i <= end; i++) isValid[i] = false;
99     }
100
101     public void exclude(String JavaDoc s) {
102     for (int i = 0; i < s.length(); i++) {
103         isValid[(byte)s.charAt(i)] = false;
104     }
105     }
106
107     public void include(String JavaDoc s) {
108     for (int i = 0; i < s.length(); i++) {
109         isValid[(byte)s.charAt(i)] = true;
110     }
111     }
112
113     public boolean has(int b) { return isValid[b & 0xff]; }
114 }
115
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