001 /*
002 * CDDL HEADER START
003 *
004 * The contents of this file are subject to the terms of the
005 * Common Development and Distribution License, Version 1.0 only
006 * (the "License"). You may not use this file except in compliance
007 * with the License.
008 *
009 * You can obtain a copy of the license at
010 * trunk/opends/resource/legal-notices/OpenDS.LICENSE
011 * or https://OpenDS.dev.java.net/OpenDS.LICENSE.
012 * See the License for the specific language governing permissions
013 * and limitations under the License.
014 *
015 * When distributing Covered Code, include this CDDL HEADER in each
016 * file and include the License file at
017 * trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
018 * add the following below this CDDL HEADER, with the fields enclosed
019 * by brackets "[]" replaced with your own identifying information:
020 * Portions Copyright [yyyy] [name of copyright owner]
021 *
022 * CDDL HEADER END
023 *
024 *
025 * Copyright 2006-2008 Sun Microsystems, Inc.
026 */
027 package org.opends.server.schema;
028
029
030
031
032
033
034 /**
035 * This class defines utility methods that can be used to determine whether a
036 * character string is printable as defined in X.520 and referenced in RFC 2252.
037 * Printable characters consist of the set of uppercase and lowercase alphabetic
038 * characters, numeric digits, quotation mark, open and close parentheses, plus,
039 * minus, comma, period, slash, colon, question mark, and space.
040 */
041 public class PrintableString
042 {
043
044
045
046 /**
047 * Indicates whether the provided character is a valid printable character.
048 *
049 * @param c The character for which to make the determination.
050 *
051 * @return <CODE>true</CODE> if the provided character is a printable
052 * character, or <CODE>false</CODE> if not.
053 */
054 public static boolean isPrintableCharacter(char c)
055 {
056 switch (c)
057 {
058 case 'a':
059 case 'b':
060 case 'c':
061 case 'd':
062 case 'e':
063 case 'f':
064 case 'g':
065 case 'h':
066 case 'i':
067 case 'j':
068 case 'k':
069 case 'l':
070 case 'm':
071 case 'n':
072 case 'o':
073 case 'p':
074 case 'q':
075 case 'r':
076 case 's':
077 case 't':
078 case 'u':
079 case 'v':
080 case 'w':
081 case 'x':
082 case 'y':
083 case 'z':
084 case 'A':
085 case 'B':
086 case 'C':
087 case 'D':
088 case 'E':
089 case 'F':
090 case 'G':
091 case 'H':
092 case 'I':
093 case 'J':
094 case 'K':
095 case 'L':
096 case 'M':
097 case 'N':
098 case 'O':
099 case 'P':
100 case 'Q':
101 case 'R':
102 case 'S':
103 case 'T':
104 case 'U':
105 case 'V':
106 case 'W':
107 case 'X':
108 case 'Y':
109 case 'Z':
110 case '0':
111 case '1':
112 case '2':
113 case '3':
114 case '4':
115 case '5':
116 case '6':
117 case '7':
118 case '8':
119 case '9':
120 case '\'':
121 case '(':
122 case ')':
123 case '+':
124 case ',':
125 case '-':
126 case '.':
127 case '=':
128 case '/':
129 case ':':
130 case '?':
131 case ' ':
132 return true;
133 default:
134 return false;
135 }
136 }
137
138
139
140 /**
141 * Indicates whether the provided string is a valid printable string.
142 *
143 * @param s The string for which to make the determination.
144 *
145 * @return <CODE>true</CODE> if the provided string is a printable string, or
146 * <CODE>false</CODE> if not.
147 */
148 public static boolean isPrintableString(String s)
149 {
150 if (s == null)
151 {
152 return false;
153 }
154
155 int length = s.length();
156 for (int i=0; i < length; i++)
157 {
158 if (! isPrintableCharacter(s.charAt(i)))
159 {
160 return false;
161 }
162 }
163
164 return true;
165 }
166 }
167