1 /*
2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.util.regex;
27
28 import java.util.HashMap;
29 import java.util.Locale;
30
31 enum UnicodeProp {
32
33 ALPHABETIC {
34 public boolean is(int ch) {
35 return Character.isAlphabetic(ch);
36 }
37 },
38
39 LETTER {
40 public boolean is(int ch) {
41 return Character.isLetter(ch);
42 }
43 },
44
45 IDEOGRAPHIC {
46 public boolean is(int ch) {
47 return Character.isIdeographic(ch);
48 }
49 },
50
51 LOWERCASE {
52 public boolean is(int ch) {
53 return Character.isLowerCase(ch);
54 }
55 },
56
57 UPPERCASE {
58 public boolean is(int ch) {
59 return Character.isUpperCase(ch);
60 }
61 },
62
63 TITLECASE {
64 public boolean is(int ch) {
65 return Character.isTitleCase(ch);
66 }
67 },
68
69 WHITE_SPACE {
70 // \p{Whitespace}
71 public boolean is(int ch) {
72 return ((((1 << Character.SPACE_SEPARATOR) |
73 (1 << Character.LINE_SEPARATOR) |
74 (1 << Character.PARAGRAPH_SEPARATOR)) >> Character.getType(ch)) & 1)
75 != 0 || (ch >= 0x9 && ch <= 0xd) || (ch == 0x85);
76 }
77 },
78
79 CONTROL {
80 // \p{gc=Control}
81 public boolean is(int ch) {
82 return Character.getType(ch) == Character.CONTROL;
83 }
84 },
85
86 PUNCTUATION {
87 // \p{gc=Punctuation}
88 public boolean is(int ch) {
89 return ((((1 << Character.CONNECTOR_PUNCTUATION) |
90 (1 << Character.DASH_PUNCTUATION) |
91 (1 << Character.START_PUNCTUATION) |
92 (1 << Character.END_PUNCTUATION) |
93 (1 << Character.OTHER_PUNCTUATION) |
94 (1 << Character.INITIAL_QUOTE_PUNCTUATION) |
95 (1 << Character.FINAL_QUOTE_PUNCTUATION)) >> Character.getType(ch)) & 1)
96 != 0;
97 }
98 },
99
100 HEX_DIGIT {
101 // \p{gc=Decimal_Number}
102 // \p{Hex_Digit} -> PropList.txt: Hex_Digit
103 public boolean is(int ch) {
104 return DIGIT.is(ch) ||
105 (ch >= 0x0030 && ch <= 0x0039) ||
106 (ch >= 0x0041 && ch <= 0x0046) ||
107 (ch >= 0x0061 && ch <= 0x0066) ||
108 (ch >= 0xFF10 && ch <= 0xFF19) ||
109 (ch >= 0xFF21 && ch <= 0xFF26) ||
110 (ch >= 0xFF41 && ch <= 0xFF46);
111 }
112 },
113
114 ASSIGNED {
115 public boolean is(int ch) {
116 return Character.getType(ch) != Character.UNASSIGNED;
117 }
118 },
119
120 NONCHARACTER_CODE_POINT {
121 // PropList.txt:Noncharacter_Code_Point
122 public boolean is(int ch) {
123 return (ch & 0xfffe) == 0xfffe || (ch >= 0xfdd0 && ch <= 0xfdef);
124 }
125 },
126
127 DIGIT {
128 // \p{gc=Decimal_Number}
129 public boolean is(int ch) {
130 return Character.isDigit(ch);
131 }
132 },
133
134 ALNUM {
135 // \p{alpha}
136 // \p{digit}
137 public boolean is(int ch) {
138 return ALPHABETIC.is(ch) || DIGIT.is(ch);
139 }
140 },
141
142 BLANK {
143 // \p{Whitespace} --
144 // [\N{LF} \N{VT} \N{FF} \N{CR} \N{NEL} -> 0xa, 0xb, 0xc, 0xd, 0x85
145 // \p{gc=Line_Separator}
146 // \p{gc=Paragraph_Separator}]
147 public boolean is(int ch) {
148 return Character.getType(ch) == Character.SPACE_SEPARATOR ||
149 ch == 0x9; // \N{HT}
150 }
151 },
152
153 GRAPH {
154 // [^
155 // \p{space}
156 // \p{gc=Control}
157 // \p{gc=Surrogate}
158 // \p{gc=Unassigned}]
159 public boolean is(int ch) {
160 return ((((1 << Character.SPACE_SEPARATOR) |
161 (1 << Character.LINE_SEPARATOR) |
162 (1 << Character.PARAGRAPH_SEPARATOR) |
163 (1 << Character.CONTROL) |
164 (1 << Character.SURROGATE) |
165 (1 << Character.UNASSIGNED)) >> Character.getType(ch)) & 1)
166 == 0;
167 }
168 },
169
170 PRINT {
171 // \p{graph}
172 // \p{blank}
173 // -- \p{cntrl}
174 public boolean is(int ch) {
175 return (GRAPH.is(ch) || BLANK.is(ch)) && !CONTROL.is(ch);
176 }
177 },
178
179 WORD {
180 // \p{alpha}
181 // \p{gc=Mark}
182 // \p{digit}
183 // \p{gc=Connector_Punctuation}
184 // \p{Join_Control} 200C..200D
185
186 public boolean is(int ch) {
187 return ALPHABETIC.is(ch) ||
188 ((((1 << Character.NON_SPACING_MARK) |
189 (1 << Character.ENCLOSING_MARK) |
190 (1 << Character.COMBINING_SPACING_MARK) |
191 (1 << Character.DECIMAL_DIGIT_NUMBER) |
192 (1 << Character.CONNECTOR_PUNCTUATION)) >> Character.getType(ch)) & 1)
193 != 0 ||
194 JOIN_CONTROL.is(ch);
195 }
196 },
197
198 JOIN_CONTROL {
199 // 200C..200D PropList.txt:Join_Control
200 public boolean is(int ch) {
201 return (ch == 0x200C || ch == 0x200D);
202 }
203 };
204
205 private static final HashMap<String, String> posix = new HashMap<>();
206 private static final HashMap<String, String> aliases = new HashMap<>();
207 static {
208 posix.put("ALPHA", "ALPHABETIC");
209 posix.put("LOWER", "LOWERCASE");
210 posix.put("UPPER", "UPPERCASE");
211 posix.put("SPACE", "WHITE_SPACE");
212 posix.put("PUNCT", "PUNCTUATION");
213 posix.put("XDIGIT","HEX_DIGIT");
214 posix.put("ALNUM", "ALNUM");
215 posix.put("CNTRL", "CONTROL");
216 posix.put("DIGIT", "DIGIT");
217 posix.put("BLANK", "BLANK");
218 posix.put("GRAPH", "GRAPH");
219 posix.put("PRINT", "PRINT");
220
221 aliases.put("WHITESPACE", "WHITE_SPACE");
222 aliases.put("HEXDIGIT","HEX_DIGIT");
223 aliases.put("NONCHARACTERCODEPOINT", "NONCHARACTER_CODE_POINT");
224 aliases.put("JOINCONTROL", "JOIN_CONTROL");
225 }
226
227 public static UnicodeProp forName(String propName) {
228 propName = propName.toUpperCase(Locale.ENGLISH);
229 String alias = aliases.get(propName);
230 if (alias != null)
231 propName = alias;
232 try {
233 return valueOf (propName);
234 } catch (IllegalArgumentException x) {}
235 return null;
236 }
237
238 public static UnicodeProp forPOSIXName(String propName) {
239 propName = posix.get(propName.toUpperCase(Locale.ENGLISH));
240 if (propName == null)
241 return null;
242 return valueOf (propName);
243 }
244
245 public abstract boolean is(int ch);
246 }