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Java > Open Source Codes > com > daffodilwoods > daffodildb > server > sql99 > common > OctetMap


1 package com.daffodilwoods.daffodildb.server.sql99.common;
2
3 /* Copyright 1997 - 2001 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  * Simple byte membership tables for 8-bit text.
42  *
43  * @author Stan Bailes
44  */
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++) {
91          isValid[i] = true;
92       }
93    }
94
95    public void include(int c) {
96       isValid[c] = true;
97    }
98
99    public void exclude(int start, int end) {
100       for (int i = start; i <= end; i++) {
101          isValid[i] = false;
102       }
103    }
104
105    public void exclude(String JavaDoc s) {
106       for (int i = 0; i < s.length(); i++) {
107          isValid[ (byte) s.charAt(i)] = false;
108       }
109    }
110
111    public void include(String JavaDoc s) {
112       for (int i = 0; i < s.length(); i++) {
113          isValid[ (byte) s.charAt(i)] = true;
114       }
115    }
116
117    public boolean has(int b) {
118       return isValid[b & 0xff];
119    }
120 }
121
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