Mercurial > hg > octave-lojdl > gnulib-hg
annotate lib/c-ctype.c @ 17464:290d581e2e24
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| author | Karl Berry <karl@freefriends.org> |
|---|---|
| date | Sat, 10 Aug 2013 07:10:55 -0700 |
| parents | e542fd46ad6f |
| children |
| rev | line source |
|---|---|
| 4218 | 1 /* Character handling in C locale. |
| 2 | |
|
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Eric Blake <eblake@redhat.com>
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3 Copyright 2000-2003, 2006, 2009-2013 Free Software Foundation, Inc. |
| 4218 | 4 |
| 5 This program is free software; you can redistribute it and/or modify | |
| 6 it under the terms of the GNU General Public License as published by | |
| 7 the Free Software Foundation; either version 2 of the License, or | |
| 8 (at your option) any later version. | |
| 9 | |
| 10 This program is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 GNU General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU General Public License | |
|
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Paul Eggert <eggert@cs.ucla.edu>
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16 along with this program; if not, see <http://www.gnu.org/licenses/>. */ |
| 4218 | 17 |
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Bruno Haible <bruno@clisp.org>
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18 #include <config.h> |
| 4218 | 19 |
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20 /* Specification. */ |
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21 #define NO_C_CTYPE_MACROS |
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22 #include "c-ctype.h" |
| 4218 | 23 |
| 24 /* The function isascii is not locale dependent. Its use in EBCDIC is | |
| 25 questionable. */ | |
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26 bool |
| 4218 | 27 c_isascii (int c) |
| 28 { | |
| 4219 | 29 return (c >= 0x00 && c <= 0x7f); |
| 4218 | 30 } |
| 31 | |
| 32 bool | |
| 33 c_isalnum (int c) | |
| 34 { | |
| 35 #if C_CTYPE_CONSECUTIVE_DIGITS \ | |
| 36 && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE | |
| 37 #if C_CTYPE_ASCII | |
| 38 return ((c >= '0' && c <= '9') | |
| 39 || ((c & ~0x20) >= 'A' && (c & ~0x20) <= 'Z')); | |
| 40 #else | |
| 41 return ((c >= '0' && c <= '9') | |
| 42 || (c >= 'A' && c <= 'Z') | |
| 43 || (c >= 'a' && c <= 'z')); | |
| 44 #endif | |
| 45 #else | |
| 46 switch (c) | |
| 47 { | |
| 48 case '0': case '1': case '2': case '3': case '4': case '5': | |
| 49 case '6': case '7': case '8': case '9': | |
| 50 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
| 51 case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': | |
| 52 case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': | |
| 53 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': | |
| 54 case 'Y': case 'Z': | |
| 55 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': | |
| 56 case 'g': case 'h': case 'i': case 'j': case 'k': case 'l': | |
| 57 case 'm': case 'n': case 'o': case 'p': case 'q': case 'r': | |
| 58 case 's': case 't': case 'u': case 'v': case 'w': case 'x': | |
| 59 case 'y': case 'z': | |
| 60 return 1; | |
| 61 default: | |
| 62 return 0; | |
| 63 } | |
| 64 #endif | |
| 65 } | |
| 66 | |
| 67 bool | |
| 68 c_isalpha (int c) | |
| 69 { | |
| 70 #if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE | |
| 71 #if C_CTYPE_ASCII | |
| 72 return ((c & ~0x20) >= 'A' && (c & ~0x20) <= 'Z'); | |
| 73 #else | |
| 74 return ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z')); | |
| 75 #endif | |
| 76 #else | |
| 77 switch (c) | |
| 78 { | |
| 79 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
| 80 case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': | |
| 81 case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': | |
| 82 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': | |
| 83 case 'Y': case 'Z': | |
| 84 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': | |
| 85 case 'g': case 'h': case 'i': case 'j': case 'k': case 'l': | |
| 86 case 'm': case 'n': case 'o': case 'p': case 'q': case 'r': | |
| 87 case 's': case 't': case 'u': case 'v': case 'w': case 'x': | |
| 88 case 'y': case 'z': | |
| 89 return 1; | |
| 90 default: | |
| 91 return 0; | |
| 92 } | |
| 93 #endif | |
| 94 } | |
| 95 | |
| 96 bool | |
| 97 c_isblank (int c) | |
| 98 { | |
| 99 return (c == ' ' || c == '\t'); | |
| 100 } | |
| 101 | |
| 102 bool | |
| 103 c_iscntrl (int c) | |
| 104 { | |
| 105 #if C_CTYPE_ASCII | |
| 106 return ((c & ~0x1f) == 0 || c == 0x7f); | |
| 107 #else | |
| 108 switch (c) | |
| 109 { | |
| 110 case ' ': case '!': case '"': case '#': case '$': case '%': | |
| 111 case '&': case '\'': case '(': case ')': case '*': case '+': | |
| 112 case ',': case '-': case '.': case '/': | |
| 113 case '0': case '1': case '2': case '3': case '4': case '5': | |
| 114 case '6': case '7': case '8': case '9': | |
| 115 case ':': case ';': case '<': case '=': case '>': case '?': | |
| 116 case '@': | |
| 117 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
| 118 case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': | |
| 119 case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': | |
| 120 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': | |
| 121 case 'Y': case 'Z': | |
| 122 case '[': case '\\': case ']': case '^': case '_': case '`': | |
| 123 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': | |
| 124 case 'g': case 'h': case 'i': case 'j': case 'k': case 'l': | |
| 125 case 'm': case 'n': case 'o': case 'p': case 'q': case 'r': | |
| 126 case 's': case 't': case 'u': case 'v': case 'w': case 'x': | |
| 127 case 'y': case 'z': | |
| 128 case '{': case '|': case '}': case '~': | |
| 129 return 0; | |
| 130 default: | |
| 131 return 1; | |
| 132 } | |
| 133 #endif | |
| 134 } | |
| 135 | |
| 136 bool | |
| 137 c_isdigit (int c) | |
| 138 { | |
| 139 #if C_CTYPE_CONSECUTIVE_DIGITS | |
| 140 return (c >= '0' && c <= '9'); | |
| 141 #else | |
| 142 switch (c) | |
| 143 { | |
| 144 case '0': case '1': case '2': case '3': case '4': case '5': | |
| 145 case '6': case '7': case '8': case '9': | |
| 146 return 1; | |
| 147 default: | |
| 148 return 0; | |
| 149 } | |
| 150 #endif | |
| 151 } | |
| 152 | |
| 153 bool | |
| 154 c_islower (int c) | |
| 155 { | |
| 156 #if C_CTYPE_CONSECUTIVE_LOWERCASE | |
| 157 return (c >= 'a' && c <= 'z'); | |
| 158 #else | |
| 159 switch (c) | |
| 160 { | |
| 161 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': | |
| 162 case 'g': case 'h': case 'i': case 'j': case 'k': case 'l': | |
| 163 case 'm': case 'n': case 'o': case 'p': case 'q': case 'r': | |
| 164 case 's': case 't': case 'u': case 'v': case 'w': case 'x': | |
| 165 case 'y': case 'z': | |
| 166 return 1; | |
| 167 default: | |
| 168 return 0; | |
| 169 } | |
| 170 #endif | |
| 171 } | |
| 172 | |
| 173 bool | |
| 174 c_isgraph (int c) | |
| 175 { | |
| 176 #if C_CTYPE_ASCII | |
| 177 return (c >= '!' && c <= '~'); | |
| 178 #else | |
| 179 switch (c) | |
| 180 { | |
| 181 case '!': case '"': case '#': case '$': case '%': case '&': | |
| 182 case '\'': case '(': case ')': case '*': case '+': case ',': | |
| 183 case '-': case '.': case '/': | |
| 184 case '0': case '1': case '2': case '3': case '4': case '5': | |
| 185 case '6': case '7': case '8': case '9': | |
| 186 case ':': case ';': case '<': case '=': case '>': case '?': | |
| 187 case '@': | |
| 188 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
| 189 case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': | |
| 190 case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': | |
| 191 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': | |
| 192 case 'Y': case 'Z': | |
| 193 case '[': case '\\': case ']': case '^': case '_': case '`': | |
| 194 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': | |
| 195 case 'g': case 'h': case 'i': case 'j': case 'k': case 'l': | |
| 196 case 'm': case 'n': case 'o': case 'p': case 'q': case 'r': | |
| 197 case 's': case 't': case 'u': case 'v': case 'w': case 'x': | |
| 198 case 'y': case 'z': | |
| 199 case '{': case '|': case '}': case '~': | |
| 200 return 1; | |
| 201 default: | |
| 202 return 0; | |
| 203 } | |
| 204 #endif | |
| 205 } | |
| 206 | |
| 207 bool | |
| 208 c_isprint (int c) | |
| 209 { | |
| 210 #if C_CTYPE_ASCII | |
| 211 return (c >= ' ' && c <= '~'); | |
| 212 #else | |
| 213 switch (c) | |
| 214 { | |
| 215 case ' ': case '!': case '"': case '#': case '$': case '%': | |
| 216 case '&': case '\'': case '(': case ')': case '*': case '+': | |
| 217 case ',': case '-': case '.': case '/': | |
| 218 case '0': case '1': case '2': case '3': case '4': case '5': | |
| 219 case '6': case '7': case '8': case '9': | |
| 220 case ':': case ';': case '<': case '=': case '>': case '?': | |
| 221 case '@': | |
| 222 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
| 223 case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': | |
| 224 case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': | |
| 225 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': | |
| 226 case 'Y': case 'Z': | |
| 227 case '[': case '\\': case ']': case '^': case '_': case '`': | |
| 228 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': | |
| 229 case 'g': case 'h': case 'i': case 'j': case 'k': case 'l': | |
| 230 case 'm': case 'n': case 'o': case 'p': case 'q': case 'r': | |
| 231 case 's': case 't': case 'u': case 'v': case 'w': case 'x': | |
| 232 case 'y': case 'z': | |
| 233 case '{': case '|': case '}': case '~': | |
| 234 return 1; | |
| 235 default: | |
| 236 return 0; | |
| 237 } | |
| 238 #endif | |
| 239 } | |
| 240 | |
| 241 bool | |
| 242 c_ispunct (int c) | |
| 243 { | |
| 244 #if C_CTYPE_ASCII | |
| 245 return ((c >= '!' && c <= '~') | |
| 246 && !((c >= '0' && c <= '9') | |
| 247 || ((c & ~0x20) >= 'A' && (c & ~0x20) <= 'Z'))); | |
| 248 #else | |
| 249 switch (c) | |
| 250 { | |
| 251 case '!': case '"': case '#': case '$': case '%': case '&': | |
| 252 case '\'': case '(': case ')': case '*': case '+': case ',': | |
| 253 case '-': case '.': case '/': | |
| 254 case ':': case ';': case '<': case '=': case '>': case '?': | |
| 255 case '@': | |
| 256 case '[': case '\\': case ']': case '^': case '_': case '`': | |
| 257 case '{': case '|': case '}': case '~': | |
| 258 return 1; | |
| 259 default: | |
| 260 return 0; | |
| 261 } | |
| 262 #endif | |
| 263 } | |
| 264 | |
| 265 bool | |
| 266 c_isspace (int c) | |
| 267 { | |
| 268 return (c == ' ' || c == '\t' | |
| 269 || c == '\n' || c == '\v' || c == '\f' || c == '\r'); | |
| 270 } | |
| 271 | |
| 272 bool | |
| 273 c_isupper (int c) | |
| 274 { | |
| 275 #if C_CTYPE_CONSECUTIVE_UPPERCASE | |
| 276 return (c >= 'A' && c <= 'Z'); | |
| 277 #else | |
| 278 switch (c) | |
| 279 { | |
| 280 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
| 281 case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': | |
| 282 case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': | |
| 283 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': | |
| 284 case 'Y': case 'Z': | |
| 285 return 1; | |
| 286 default: | |
| 287 return 0; | |
| 288 } | |
| 289 #endif | |
| 290 } | |
| 291 | |
| 292 bool | |
| 293 c_isxdigit (int c) | |
| 294 { | |
| 295 #if C_CTYPE_CONSECUTIVE_DIGITS \ | |
| 296 && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE | |
| 297 #if C_CTYPE_ASCII | |
| 298 return ((c >= '0' && c <= '9') | |
| 299 || ((c & ~0x20) >= 'A' && (c & ~0x20) <= 'F')); | |
| 300 #else | |
| 301 return ((c >= '0' && c <= '9') | |
| 302 || (c >= 'A' && c <= 'F') | |
| 303 || (c >= 'a' && c <= 'f')); | |
| 304 #endif | |
| 305 #else | |
| 306 switch (c) | |
| 307 { | |
| 308 case '0': case '1': case '2': case '3': case '4': case '5': | |
| 309 case '6': case '7': case '8': case '9': | |
| 310 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
| 311 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': | |
| 312 return 1; | |
| 313 default: | |
| 314 return 0; | |
| 315 } | |
| 316 #endif | |
| 317 } | |
| 318 | |
| 319 int | |
| 320 c_tolower (int c) | |
| 321 { | |
| 322 #if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE | |
| 323 return (c >= 'A' && c <= 'Z' ? c - 'A' + 'a' : c); | |
| 324 #else | |
| 325 switch (c) | |
| 326 { | |
| 327 case 'A': return 'a'; | |
| 328 case 'B': return 'b'; | |
| 329 case 'C': return 'c'; | |
| 330 case 'D': return 'd'; | |
| 331 case 'E': return 'e'; | |
| 332 case 'F': return 'f'; | |
| 333 case 'G': return 'g'; | |
| 334 case 'H': return 'h'; | |
| 335 case 'I': return 'i'; | |
| 336 case 'J': return 'j'; | |
| 337 case 'K': return 'k'; | |
| 338 case 'L': return 'l'; | |
| 339 case 'M': return 'm'; | |
| 340 case 'N': return 'n'; | |
| 341 case 'O': return 'o'; | |
| 342 case 'P': return 'p'; | |
| 343 case 'Q': return 'q'; | |
| 344 case 'R': return 'r'; | |
| 345 case 'S': return 's'; | |
| 346 case 'T': return 't'; | |
| 347 case 'U': return 'u'; | |
| 348 case 'V': return 'v'; | |
| 349 case 'W': return 'w'; | |
| 350 case 'X': return 'x'; | |
| 351 case 'Y': return 'y'; | |
| 352 case 'Z': return 'z'; | |
| 353 default: return c; | |
| 354 } | |
| 355 #endif | |
| 356 } | |
| 357 | |
| 358 int | |
| 359 c_toupper (int c) | |
| 360 { | |
| 361 #if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE | |
| 362 return (c >= 'a' && c <= 'z' ? c - 'a' + 'A' : c); | |
| 363 #else | |
| 364 switch (c) | |
| 365 { | |
| 366 case 'a': return 'A'; | |
| 367 case 'b': return 'B'; | |
| 368 case 'c': return 'C'; | |
| 369 case 'd': return 'D'; | |
| 370 case 'e': return 'E'; | |
| 371 case 'f': return 'F'; | |
| 372 case 'g': return 'G'; | |
| 373 case 'h': return 'H'; | |
| 374 case 'i': return 'I'; | |
| 375 case 'j': return 'J'; | |
| 376 case 'k': return 'K'; | |
| 377 case 'l': return 'L'; | |
| 378 case 'm': return 'M'; | |
| 379 case 'n': return 'N'; | |
| 380 case 'o': return 'O'; | |
| 381 case 'p': return 'P'; | |
| 382 case 'q': return 'Q'; | |
| 383 case 'r': return 'R'; | |
| 384 case 's': return 'S'; | |
| 385 case 't': return 'T'; | |
| 386 case 'u': return 'U'; | |
| 387 case 'v': return 'V'; | |
| 388 case 'w': return 'W'; | |
| 389 case 'x': return 'X'; | |
| 390 case 'y': return 'Y'; | |
| 391 case 'z': return 'Z'; | |
| 392 default: return c; | |
| 393 } | |
| 394 #endif | |
| 395 } |