citrus_none.c revision 1.9
1 /* $NetBSD: citrus_none.c,v 1.9 2003/06/25 09:51:38 tshiozak Exp $ */ 2 3 /*- 4 * Copyright (c)2002 Citrus Project, 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 #if defined(LIBC_SCCS) && !defined(lint) 31 __RCSID("$NetBSD: citrus_none.c,v 1.9 2003/06/25 09:51:38 tshiozak Exp $"); 32 #endif /* LIBC_SCCS and not lint */ 33 34 #include <assert.h> 35 #include <errno.h> 36 #include <string.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <stddef.h> 40 #include <locale.h> 41 #include <wchar.h> 42 #include <sys/types.h> 43 44 #include "citrus_namespace.h" 45 #include "citrus_types.h" 46 #include "citrus_module.h" 47 #include "citrus_ctype.h" 48 #include "citrus_none.h" 49 #include "citrus_stdenc.h" 50 51 /* ---------------------------------------------------------------------- */ 52 53 _CITRUS_CTYPE_DECLS(NONE); 54 _CITRUS_CTYPE_DEF_OPS(NONE); 55 56 57 /* ---------------------------------------------------------------------- */ 58 59 static int 60 /*ARGSUSED*/ 61 _citrus_NONE_ctype_init(void ** __restrict cl, void * __restrict var, 62 size_t lenvar, size_t lenps) 63 { 64 *cl = NULL; 65 return (0); 66 } 67 68 static void 69 /*ARGSUSED*/ 70 _citrus_NONE_ctype_uninit(void *cl) 71 { 72 } 73 74 static unsigned 75 /*ARGSUSED*/ 76 _citrus_NONE_ctype_get_mb_cur_max(void *cl) 77 { 78 return (1); 79 } 80 81 static int 82 /*ARGSUSED*/ 83 _citrus_NONE_ctype_mblen(void * __restrict cl, const char * __restrict s, 84 size_t n, int * __restrict nresult) 85 { 86 if (!s) { 87 *nresult = 0; /* state independent */ 88 return (0); 89 } 90 if (n==0) { 91 *nresult = -1; 92 return (EILSEQ); 93 } 94 *nresult = (*s == 0) ? 0 : 1; 95 return (0); 96 } 97 98 static int 99 /*ARGSUSED*/ 100 _citrus_NONE_ctype_mbrlen(void * __restrict cl, const char * __restrict s, 101 size_t n, void * __restrict pspriv, 102 size_t * __restrict nresult) 103 { 104 if (!s) { 105 *nresult = 0; 106 return (0); 107 } 108 if (n==0) { 109 *nresult = (size_t)-2; 110 return (0); 111 } 112 *nresult = (*s == 0) ? 0 : 1; 113 return (0); 114 } 115 116 static int 117 /*ARGSUSED*/ 118 _citrus_NONE_ctype_mbrtowc(void * __restrict cl, wchar_t * __restrict pwc, 119 const char * __restrict s, size_t n, 120 void * __restrict pspriv, 121 size_t * __restrict nresult) 122 { 123 if (s == NULL) { 124 *nresult = 0; 125 return (0); 126 } 127 if (n == 0) { 128 *nresult = (size_t)-2; 129 return (0); 130 } 131 132 if (pwc != NULL) 133 *pwc = (wchar_t)(unsigned char) *s; 134 135 *nresult = *s == '\0' ? 0 : 1; 136 return (0); 137 } 138 139 static int 140 /*ARGSUSED*/ 141 _citrus_NONE_ctype_mbsinit(void * __restrict cl, 142 const void * __restrict pspriv, 143 int * __restrict nresult) 144 { 145 *nresult = 1; /* always initial state */ 146 return (0); 147 } 148 149 static int 150 /*ARGSUSED*/ 151 _citrus_NONE_ctype_mbsrtowcs(void * __restrict cl, wchar_t * __restrict pwcs, 152 const char ** __restrict s, size_t n, 153 void * __restrict pspriv, 154 size_t * __restrict nresult) 155 { 156 int cnt; 157 const char *s0; 158 159 /* if pwcs is NULL, ignore n */ 160 if (pwcs == NULL) 161 n = 1; /* arbitrary >0 value */ 162 163 cnt = 0; 164 s0 = *s; /* to keep *s unchanged for now, use copy instead. */ 165 while (n > 0) { 166 if (pwcs != NULL) { 167 *pwcs = (wchar_t)(unsigned char)*s0; 168 } 169 if (*s0 == '\0') { 170 s0 = NULL; 171 break; 172 } 173 s0++; 174 if (pwcs != NULL) { 175 pwcs++; 176 n--; 177 } 178 cnt++; 179 } 180 if (pwcs) 181 *s = s0; 182 183 *nresult = (size_t)cnt; 184 185 return (0); 186 } 187 188 static int 189 _citrus_NONE_ctype_mbstowcs(void * __restrict cl, wchar_t * __restrict wcs, 190 const char * __restrict s, size_t n, 191 size_t * __restrict nresult) 192 { 193 return (_citrus_NONE_ctype_mbsrtowcs(cl, wcs, (const char **)&s, n, NULL, nresult)); 194 } 195 196 static int 197 /*ARGSUSED*/ 198 _citrus_NONE_ctype_mbtowc(void * __restrict cl, wchar_t * __restrict pwc, 199 const char * __restrict s, size_t n, 200 int * __restrict nresult) 201 { 202 203 if (s == NULL) { 204 *nresult = 0; /* state independent */ 205 return (0); 206 } 207 if (n == 0) { 208 return (EILSEQ); 209 } 210 if (pwc == NULL) { 211 if (*s == '\0') { 212 *nresult = 0; 213 } else { 214 *nresult = 1; 215 } 216 return (0); 217 } 218 219 *pwc = (wchar_t)*s; 220 *nresult = *s == '\0' ? 0 : 1; 221 222 return (0); 223 } 224 225 static int 226 /*ARGSUSED*/ 227 _citrus_NONE_ctype_wcrtomb(void * __restrict cl, char * __restrict s, 228 wchar_t wc, void * __restrict pspriv, 229 size_t * __restrict nresult) 230 { 231 if ((wc&~0xFFU) != 0) { 232 *nresult = (size_t)-1; 233 return (EILSEQ); 234 } 235 236 *nresult = 1; 237 if (s!=NULL) 238 *s = (char)wc; 239 240 return (0); 241 } 242 243 static int 244 /*ARGSUSED*/ 245 _citrus_NONE_ctype_wcsrtombs(void * __restrict cl, char * __restrict s, 246 const wchar_t ** __restrict pwcs, size_t n, 247 void * __restrict pspriv, 248 size_t * __restrict nresult) 249 { 250 size_t count; 251 const wchar_t *pwcs0; 252 253 pwcs0 = *pwcs; 254 count = 0; 255 256 if (s == NULL) 257 n = 1; 258 259 while (n > 0) { 260 if ((*pwcs0 & ~0xFFU) != 0) { 261 *nresult = (size_t)-1; 262 return (EILSEQ); 263 } 264 if (s != NULL) { 265 *s++ = (char)*pwcs0; 266 n--; 267 } 268 if (*pwcs0 == L'\0') { 269 pwcs0 = NULL; 270 break; 271 } 272 count++; 273 pwcs0++; 274 } 275 if (s != NULL) 276 *pwcs = pwcs0; 277 278 *nresult = count; 279 280 return (0); 281 } 282 283 static int 284 _citrus_NONE_ctype_wcstombs(void * __restrict cl, char * __restrict s, 285 const wchar_t * __restrict pwcs, size_t n, 286 size_t * __restrict nresult) 287 { 288 return (_citrus_NONE_ctype_wcsrtombs(cl, s, (const wchar_t **)&pwcs, n, NULL, nresult)); 289 } 290 291 static int 292 _citrus_NONE_ctype_wctomb(void * __restrict cl, char * __restrict s, 293 wchar_t wc, int * __restrict nresult) 294 { 295 int ret; 296 size_t nr; 297 298 if (s == 0) { 299 /* 300 * initialize state here. 301 * (nothing to do for us.) 302 */ 303 *nresult = 0; /* we're state independent */ 304 return (0); 305 } 306 307 ret = _citrus_NONE_ctype_wcrtomb(cl, s, wc, NULL, &nr); 308 *nresult = (int)nr; 309 310 return (ret); 311 } 312 313 static int 314 /*ARGSUSED*/ 315 _citrus_NONE_ctype_btowc(_citrus_ctype_rec_t * __restrict cc, 316 int c, wint_t * __restrict wcresult) 317 { 318 if (c == EOF || c & ~0xFF) 319 *wcresult = WEOF; 320 else 321 *wcresult = (wint_t)c; 322 return (0); 323 } 324 325 static int 326 /*ARGSUSED*/ 327 _citrus_NONE_ctype_wctob(_citrus_ctype_rec_t * __restrict cc, 328 wint_t wc, int * __restrict cresult) 329 { 330 if (wc == WEOF || wc & ~0xFF) 331 *cresult = EOF; 332 else 333 *cresult = (int)wc; 334 return (0); 335 } 336 337 /* ---------------------------------------------------------------------- */ 338 339 _CITRUS_STDENC_DECLS(NONE); 340 _CITRUS_STDENC_DEF_OPS(NONE); 341 struct _citrus_stdenc_traits _citrus_NONE_stdenc_traits = { 342 0, /* et_state_size */ 343 1, /* mb_cur_max */ 344 }; 345 346 static int 347 /*ARGSUSED*/ 348 _citrus_NONE_stdenc_init(struct _citrus_stdenc * __restrict ce, 349 const void *var, size_t lenvar, 350 struct _citrus_stdenc_traits * __restrict et) 351 { 352 353 et->et_state_size = 0; 354 et->et_mb_cur_max = 1; 355 356 ce->ce_closure = NULL; 357 358 return (0); 359 } 360 361 static void 362 /*ARGSUSED*/ 363 _citrus_NONE_stdenc_uninit(struct _citrus_stdenc *ce) 364 { 365 } 366 367 static int 368 /*ARGSUSED*/ 369 _citrus_NONE_stdenc_init_state(struct _citrus_stdenc * __restrict ce, 370 void * __restrict ps) 371 { 372 return (0); 373 } 374 375 static int 376 /*ARGSUSED*/ 377 _citrus_NONE_stdenc_mbtocs(struct _citrus_stdenc * __restrict ce, 378 _csid_t *csid, _index_t *idx, 379 const char **s, size_t n, 380 void *ps, size_t *nresult) 381 { 382 383 _DIAGASSERT(csid != NULL && idx != NULL); 384 385 if (n<1) { 386 *nresult = (size_t)-2; 387 return (0); 388 } 389 390 *csid = 0; 391 *idx = (_index_t)(unsigned char)*(*s)++; 392 *nresult = *idx == 0 ? 0 : 1; 393 394 return (0); 395 } 396 397 static int 398 /*ARGSUSED*/ 399 _citrus_NONE_stdenc_cstomb(struct _citrus_stdenc * __restrict ce, 400 char *s, size_t n, 401 _csid_t csid, _index_t idx, 402 void *ps, size_t *nresult) 403 { 404 405 if (csid == _CITRUS_CSID_INVALID) { 406 *nresult = 0; 407 return (0); 408 } 409 if (n<1) { 410 *nresult = (size_t)-2; 411 return (0); 412 } 413 if (csid != 0 || (idx&0xFF) != idx) 414 return (EILSEQ); 415 416 *s = (char)idx; 417 *nresult = 1; 418 419 return (0); 420 } 421 422 static int 423 /*ARGSUSED*/ 424 _citrus_NONE_stdenc_mbtowc(struct _citrus_stdenc * __restrict ce, 425 _wc_t * __restrict pwc, 426 const char ** __restrict s, size_t n, 427 void * __restrict pspriv, 428 size_t * __restrict nresult) 429 { 430 if (s == NULL) { 431 *nresult = 0; 432 return (0); 433 } 434 if (n == 0) { 435 *nresult = (size_t)-2; 436 return (0); 437 } 438 439 if (pwc != NULL) 440 *pwc = (_wc_t)(unsigned char) **s; 441 442 *nresult = *s == '\0' ? 0 : 1; 443 return (0); 444 } 445 446 static int 447 /*ARGSUSED*/ 448 _citrus_NONE_stdenc_wctomb(struct _citrus_stdenc * __restrict ce, 449 char * __restrict s, size_t n, 450 _wc_t wc, void * __restrict pspriv, 451 size_t * __restrict nresult) 452 { 453 if ((wc&~0xFFU) != 0) { 454 *nresult = (size_t)-1; 455 return (EILSEQ); 456 } 457 if (n==0) { 458 *nresult = (size_t)-2; 459 return (0); 460 } 461 462 *nresult = 1; 463 if (s!=NULL && n>0) 464 *s = (char)wc; 465 466 return (0); 467 } 468
Indexes created Tue Sep 23 02:09:52 GMT 2025