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2aa62f2b | 1 | /** @file\r |
681cc25c | 2 | Character classification function implementations for <ctype.h>.\r |
2aa62f2b | 3 | \r |
681cc25c | 4 | Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>\r |
2aa62f2b | 5 | This program and the accompanying materials are licensed and made available under\r |
6 | the terms and conditions of the BSD License that accompanies this distribution.\r | |
7 | The full text of the license may be found at\r | |
681cc25c | 8 | http://opensource.org/licenses/bsd-license.\r |
2aa62f2b | 9 | \r |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
2aa62f2b | 12 | **/\r |
13 | #include <LibConfig.h>\r | |
14 | \r | |
15 | #define NO_CTYPE_MACROS // So that we don't define the classification macros\r | |
16 | #include <ctype.h>\r | |
17 | \r | |
681cc25c | 18 | /** Internal worker function for character classification.\r |
19 | \r | |
20 | Determines if a character is a member of a set of character classes.\r | |
21 | \r | |
22 | @param[in] _c The character to be tested.\r | |
23 | @param[in] mask A bitmapped specification of the character classes to\r | |
24 | test the character against. These bits are defined\r | |
25 | in _ctype.h.\r | |
26 | \r | |
27 | @retval 0 The character, _c, is NOT a member of the character classes specified by mask.\r | |
28 | @retval nonZero The character, _c, IS a member of a specified character class.\r | |
29 | **/\r | |
2aa62f2b | 30 | int\r |
681cc25c | 31 | __isCClass(\r |
32 | IN int _c,\r | |
33 | unsigned int mask\r | |
34 | )\r | |
2aa62f2b | 35 | {\r |
36 | return ((_c < 0 || _c > 127) ? 0 : (_cClass[_c] & mask));\r | |
37 | }\r | |
38 | \r | |
681cc25c | 39 | /** The isalnum function tests for any character for which isalpha or isdigit\r |
40 | is true.\r | |
2aa62f2b | 41 | \r |
681cc25c | 42 | @param[in] c The character to be tested.\r |
43 | \r | |
44 | @return Returns nonzero (true) if and only if the value of the parameter c\r | |
45 | can be classified as specified in the description of the function.\r | |
2aa62f2b | 46 | **/\r |
681cc25c | 47 | int\r |
48 | isalnum(\r | |
49 | IN int c\r | |
50 | )\r | |
2aa62f2b | 51 | {\r |
52 | return (__isCClass( c, (_CD | _CU | _CL | _XA)));\r | |
53 | }\r | |
54 | \r | |
681cc25c | 55 | /** The isalpha function tests for any character for which isupper or islower\r |
56 | is true, or any character that is one of a locale-specific set of\r | |
57 | alphabetic characters for which none of iscntrl, isdigit, ispunct, or\r | |
58 | isspace is true. In the "C" locale, isalpha returns true only for the\r | |
59 | characters for which isupper or islower is true.\r | |
2aa62f2b | 60 | \r |
681cc25c | 61 | @param[in] c The character to be tested.\r |
62 | \r | |
63 | @return Returns nonzero (true) if and only if the value of the parameter c\r | |
64 | can be classified as specified in the description of the function.\r | |
2aa62f2b | 65 | **/\r |
681cc25c | 66 | int\r |
67 | isalpha(\r | |
68 | IN int c\r | |
69 | )\r | |
2aa62f2b | 70 | {\r |
71 | return (__isCClass( c, (_CU | _CL | _XA)));\r | |
72 | }\r | |
73 | \r | |
681cc25c | 74 | /** The iscntrl function tests for any control character.\r |
2aa62f2b | 75 | \r |
681cc25c | 76 | @param[in] c The character to be tested.\r |
77 | \r | |
78 | @return Returns nonzero (true) if and only if the value of the parameter c\r | |
79 | can be classified as specified in the description of the function.\r | |
2aa62f2b | 80 | **/\r |
681cc25c | 81 | int\r |
82 | iscntrl(\r | |
83 | IN int c\r | |
84 | )\r | |
2aa62f2b | 85 | {\r |
86 | return (__isCClass( c, (_CC)));\r | |
87 | }\r | |
88 | \r | |
681cc25c | 89 | /** The isdigit function tests for any decimal-digit character.\r |
2aa62f2b | 90 | \r |
681cc25c | 91 | @param[in] c The character to be tested.\r |
92 | \r | |
93 | @return Returns nonzero (true) if and only if the value of the parameter c\r | |
94 | can be classified as specified in the description of the function.\r | |
2aa62f2b | 95 | **/\r |
681cc25c | 96 | int\r |
97 | isdigit(\r | |
98 | IN int c\r | |
99 | )\r | |
2aa62f2b | 100 | {\r |
101 | return (__isCClass( c, (_CD)));\r | |
102 | }\r | |
103 | \r | |
681cc25c | 104 | /** The isgraph function tests for any printing character except space (' ').\r |
2aa62f2b | 105 | \r |
681cc25c | 106 | @param[in] c The character to be tested.\r |
107 | \r | |
108 | @return Returns nonzero (true) if and only if the value of the parameter c\r | |
109 | can be classified as specified in the description of the function.\r | |
2aa62f2b | 110 | **/\r |
681cc25c | 111 | int\r |
112 | isgraph(\r | |
113 | IN int c\r | |
114 | )\r | |
2aa62f2b | 115 | {\r |
116 | return (__isCClass( c, (_CG)));\r | |
117 | }\r | |
118 | \r | |
681cc25c | 119 | /** The islower function tests for any character that is a lowercase letter or\r |
120 | is one of a locale-specific set of characters for which none of iscntrl,\r | |
121 | isdigit, ispunct, or isspace is true. In the "C" locale, islower returns\r | |
122 | true only for the lowercase letters.\r | |
2aa62f2b | 123 | \r |
681cc25c | 124 | @param[in] c The character to be tested.\r |
125 | \r | |
126 | @return Returns nonzero (true) if and only if the value of the parameter c\r | |
127 | can be classified as specified in the description of the function.\r | |
2aa62f2b | 128 | **/\r |
681cc25c | 129 | int\r |
130 | islower(\r | |
131 | IN int c\r | |
132 | )\r | |
2aa62f2b | 133 | {\r |
134 | return (__isCClass( c, (_CL)));\r | |
135 | }\r | |
136 | \r | |
681cc25c | 137 | /** The isprint function tests for any printing character including space (' ').\r |
2aa62f2b | 138 | \r |
681cc25c | 139 | @param[in] c The character to be tested.\r |
140 | \r | |
141 | @return Returns nonzero (true) if and only if the value of the parameter c\r | |
142 | can be classified as specified in the description of the function.\r | |
2aa62f2b | 143 | **/\r |
681cc25c | 144 | int\r |
145 | isprint(\r | |
146 | IN int c\r | |
147 | )\r | |
2aa62f2b | 148 | {\r |
149 | return (__isCClass( c, (_CS | _CG)));\r | |
150 | }\r | |
151 | \r | |
681cc25c | 152 | /** The ispunct function tests for any printing character that is one of a\r |
153 | locale-specific set of punctuation characters for which neither isspace nor\r | |
154 | isalnum is true. In the "C" locale, ispunct returns true for every printing\r | |
155 | character for which neither isspace nor isalnum is true.\r | |
2aa62f2b | 156 | \r |
681cc25c | 157 | @param[in] c The character to be tested.\r |
158 | \r | |
159 | @return Returns nonzero (true) if and only if the value of the parameter c\r | |
160 | can be classified as specified in the description of the function.\r | |
2aa62f2b | 161 | **/\r |
681cc25c | 162 | int\r |
163 | ispunct(\r | |
164 | IN int c\r | |
165 | )\r | |
2aa62f2b | 166 | {\r |
167 | return (__isCClass( c, (_CP)));\r | |
168 | }\r | |
169 | \r | |
681cc25c | 170 | /** The isspace function tests for any character that is a standard white-space\r |
171 | character or is one of a locale-specific set of characters for which\r | |
172 | isalnum is false. The standard white-space characters are the following:\r | |
173 | space (' '), form feed ('\f'), new-line ('\n'), carriage return ('\r'),\r | |
174 | horizontal tab ('\t'), and vertical tab ('\v'). In the "C" locale, isspace\r | |
175 | returns true only for the standard white-space characters.\r | |
2aa62f2b | 176 | \r |
681cc25c | 177 | @param[in] c The character to be tested.\r |
178 | \r | |
179 | @return Returns nonzero (true) if and only if the value of the parameter c\r | |
180 | can be classified as specified in the description of the function.\r | |
2aa62f2b | 181 | **/\r |
681cc25c | 182 | int\r |
183 | isspace(\r | |
184 | IN int c\r | |
185 | )\r | |
2aa62f2b | 186 | {\r |
187 | return (__isCClass( c, (_CW)));\r | |
188 | }\r | |
189 | \r | |
681cc25c | 190 | /** The isupper function tests for any character that is an uppercase letter or\r |
191 | is one of a locale-specific set of characters for which none of iscntrl,\r | |
192 | isdigit, ispunct, or isspace is true. In the "C" locale, isupper returns\r | |
193 | true only for the uppercase letters.\r | |
2aa62f2b | 194 | \r |
681cc25c | 195 | @param[in] c The character to be tested.\r |
196 | \r | |
197 | @return Returns nonzero (true) if and only if the value of the parameter c\r | |
198 | can be classified as specified in the description of the function.\r | |
2aa62f2b | 199 | **/\r |
681cc25c | 200 | int\r |
201 | isupper(\r | |
202 | IN int c\r | |
203 | )\r | |
2aa62f2b | 204 | {\r |
205 | return (__isCClass( c, (_CU)));\r | |
206 | }\r | |
207 | \r | |
681cc25c | 208 | /** The isxdigit function tests for any hexadecimal-digit character.\r |
2aa62f2b | 209 | \r |
681cc25c | 210 | @param[in] c The character to be tested.\r |
211 | \r | |
212 | @return Returns nonzero (true) if and only if the value of the parameter c\r | |
213 | can be classified as specified in the description of the function.\r | |
2aa62f2b | 214 | **/\r |
681cc25c | 215 | int\r |
216 | isxdigit(\r | |
217 | IN int c\r | |
218 | )\r | |
2aa62f2b | 219 | {\r |
220 | return (__isCClass( c, (_CD | _CX)));\r | |
221 | }\r | |
222 | \r | |
681cc25c | 223 | /** The isblank function tests that a character is a white-space character that results\r |
224 | in a number of space (' ') characters being sent to the output device. In the C locale\r | |
225 | this is either ' ' or '\t'.\r | |
226 | \r | |
227 | @param[in] c The character to be tested.\r | |
228 | \r | |
229 | @return Returns nonzero (true) if and only if the value of the parameter c\r | |
230 | can be classified as specified in the description of the function.\r | |
231 | **/\r | |
2aa62f2b | 232 | int\r |
681cc25c | 233 | isblank(\r |
234 | IN int c\r | |
235 | )\r | |
2aa62f2b | 236 | {\r |
0c1992fb | 237 | return (__isCClass( c, (_CB)));\r |
2aa62f2b | 238 | }\r |
2aa62f2b | 239 | \r |
681cc25c | 240 | /** The isascii function tests that a character is one of the 128 7-bit ASCII characters.\r |
2aa62f2b | 241 | \r |
242 | @param[in] c The character to test.\r | |
681cc25c | 243 | \r |
2aa62f2b | 244 | @return Returns nonzero (true) if c is a valid ASCII character. Otherwize,\r |
245 | zero (false) is returned.\r | |
246 | **/\r | |
681cc25c | 247 | int\r |
248 | isascii(\r | |
249 | IN int c\r | |
250 | )\r | |
251 | {\r | |
2aa62f2b | 252 | return ((c >= 0) && (c < 128));\r |
253 | }\r | |
0c1992fb | 254 | \r |
255 | /** Test whether a character is one of the characters used as a separator\r | |
256 | between directory elements in a path.\r | |
257 | \r | |
258 | Characters are '/', '\\'\r | |
259 | \r | |
260 | This non-standard function is unique to this implementation.\r | |
261 | \r | |
262 | @param[in] c The character to be tested.\r | |
263 | \r | |
264 | @return Returns nonzero (true) if and only if the value of the parameter c\r | |
265 | can be classified as specified in the description of the function.\r | |
266 | **/\r | |
267 | int\r | |
268 | isDirSep(int c)\r | |
269 | {\r | |
270 | return (__isCClass( c, (_C0)));\r | |
271 | }\r |