1 /* $NetBSD: src/lib/libc/citrus/citrus_none.c,v 1.12 2004/01/18 03:57:30 yamt Exp $ */ 2 /* $DragonFly: src/lib/libc/citrus/citrus_none.c,v 1.2 2005/03/16 06:13:24 joerg Exp $ */ 3 4 /*- 5 * Copyright (c)2002 Citrus Project, 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <assert.h> 31 #include <errno.h> 32 #include <string.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <stddef.h> 36 #include <locale.h> 37 #include <wchar.h> 38 #include <sys/types.h> 39 40 #include "citrus_namespace.h" 41 #include "citrus_types.h" 42 #include "citrus_module.h" 43 #include "citrus_ctype.h" 44 #include "citrus_none.h" 45 #include "citrus_stdenc.h" 46 47 /* ---------------------------------------------------------------------- */ 48 49 _CITRUS_CTYPE_DECLS(NONE); 50 _CITRUS_CTYPE_DEF_OPS(NONE); 51 52 53 /* ---------------------------------------------------------------------- */ 54 55 static int 56 /*ARGSUSED*/ 57 _citrus_NONE_ctype_init(void ** __restrict cl, void * __restrict var __unused, 58 size_t lenvar __unused, size_t lenps __unused) 59 { 60 *cl = NULL; 61 return (0); 62 } 63 64 static void 65 /*ARGSUSED*/ 66 _citrus_NONE_ctype_uninit(void *cl __unused) 67 { 68 } 69 70 static unsigned 71 /*ARGSUSED*/ 72 _citrus_NONE_ctype_get_mb_cur_max(void *cl __unused) 73 { 74 return (1); 75 } 76 77 static int 78 /*ARGSUSED*/ 79 _citrus_NONE_ctype_mblen(void * __restrict cl __unused, 80 const char * __restrict s, size_t n, 81 int * __restrict nresult) 82 { 83 if (!s) { 84 *nresult = 0; /* state independent */ 85 return (0); 86 } 87 if (n==0) { 88 *nresult = -1; 89 return (EILSEQ); 90 } 91 *nresult = (*s == 0) ? 0 : 1; 92 return (0); 93 } 94 95 static int 96 /*ARGSUSED*/ 97 _citrus_NONE_ctype_mbrlen(void * __restrict cl __unused, 98 const char * __restrict s, size_t n, 99 void * __restrict pspriv __unused, 100 size_t * __restrict nresult) 101 { 102 if (!s) { 103 *nresult = 0; 104 return (0); 105 } 106 if (n==0) { 107 *nresult = (size_t)-2; 108 return (0); 109 } 110 *nresult = (*s == 0) ? 0 : 1; 111 return (0); 112 } 113 114 static int 115 /*ARGSUSED*/ 116 _citrus_NONE_ctype_mbrtowc(void * __restrict cl __unused, 117 wchar_t * __restrict pwc, 118 const char * __restrict s, size_t n, 119 void * __restrict pspriv __unused, 120 size_t * __restrict nresult) 121 { 122 if (s == NULL) { 123 *nresult = 0; 124 return (0); 125 } 126 if (n == 0) { 127 *nresult = (size_t)-2; 128 return (0); 129 } 130 131 if (pwc != NULL) 132 *pwc = (wchar_t)(unsigned char) *s; 133 134 *nresult = *s == '\0' ? 0 : 1; 135 return (0); 136 } 137 138 static int 139 /*ARGSUSED*/ 140 _citrus_NONE_ctype_mbsinit(void * __restrict cl __unused, 141 const void * __restrict pspriv __unused, 142 int * __restrict nresult) 143 { 144 *nresult = 1; /* always initial state */ 145 return (0); 146 } 147 148 static int 149 /*ARGSUSED*/ 150 _citrus_NONE_ctype_mbsrtowcs(void * __restrict cl __unused, 151 wchar_t * __restrict pwcs, 152 const char ** __restrict s, size_t n, 153 void * __restrict pspriv __unused, 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, &s, n, NULL, nresult)); 194 } 195 196 static int 197 /*ARGSUSED*/ 198 _citrus_NONE_ctype_mbtowc(void * __restrict cl __unused, 199 wchar_t * __restrict pwc, 200 const char * __restrict s, size_t n, 201 int * __restrict nresult) 202 { 203 204 if (s == NULL) { 205 *nresult = 0; /* state independent */ 206 return (0); 207 } 208 if (n == 0) { 209 return (EILSEQ); 210 } 211 if (pwc == NULL) { 212 if (*s == '\0') { 213 *nresult = 0; 214 } else { 215 *nresult = 1; 216 } 217 return (0); 218 } 219 220 *pwc = (wchar_t)*s; 221 *nresult = *s == '\0' ? 0 : 1; 222 223 return (0); 224 } 225 226 static int 227 /*ARGSUSED*/ 228 _citrus_NONE_ctype_wcrtomb(void * __restrict cl __unused, 229 char * __restrict s, wchar_t wc, 230 void * __restrict pspriv __unused, 231 size_t * __restrict nresult) 232 { 233 if ((wc&~0xFFU) != 0) { 234 *nresult = (size_t)-1; 235 return (EILSEQ); 236 } 237 238 *nresult = 1; 239 if (s!=NULL) 240 *s = (char)wc; 241 242 return (0); 243 } 244 245 static int 246 /*ARGSUSED*/ 247 _citrus_NONE_ctype_wcsrtombs(void * __restrict cl __unused, 248 char * __restrict s, 249 const wchar_t ** __restrict pwcs, size_t n, 250 void * __restrict pspriv __unused, 251 size_t * __restrict nresult) 252 { 253 size_t count; 254 const wchar_t *pwcs0; 255 256 pwcs0 = *pwcs; 257 count = 0; 258 259 if (s == NULL) 260 n = 1; 261 262 while (n > 0) { 263 if ((*pwcs0 & ~0xFFU) != 0) { 264 *nresult = (size_t)-1; 265 return (EILSEQ); 266 } 267 if (s != NULL) { 268 *s++ = (char)*pwcs0; 269 n--; 270 } 271 if (*pwcs0 == L'\0') { 272 pwcs0 = NULL; 273 break; 274 } 275 count++; 276 pwcs0++; 277 } 278 if (s != NULL) 279 *pwcs = pwcs0; 280 281 *nresult = count; 282 283 return (0); 284 } 285 286 static int 287 _citrus_NONE_ctype_wcstombs(void * __restrict cl, char * __restrict s, 288 const wchar_t * __restrict pwcs, size_t n, 289 size_t * __restrict nresult) 290 { 291 return (_citrus_NONE_ctype_wcsrtombs(cl, s, &pwcs, n, NULL, nresult)); 292 } 293 294 static int 295 _citrus_NONE_ctype_wctomb(void * __restrict cl, char * __restrict s, 296 wchar_t wc, int * __restrict nresult) 297 { 298 int ret; 299 size_t nr; 300 301 if (s == 0) { 302 /* 303 * initialize state here. 304 * (nothing to do for us.) 305 */ 306 *nresult = 0; /* we're state independent */ 307 return (0); 308 } 309 310 ret = _citrus_NONE_ctype_wcrtomb(cl, s, wc, NULL, &nr); 311 *nresult = (int)nr; 312 313 return (ret); 314 } 315 316 static int 317 /*ARGSUSED*/ 318 _citrus_NONE_ctype_btowc(_citrus_ctype_rec_t * __restrict cc __unused, 319 int c, wint_t * __restrict wcresult) 320 { 321 if (c == EOF || c & ~0xFF) 322 *wcresult = WEOF; 323 else 324 *wcresult = (wint_t)c; 325 return (0); 326 } 327 328 static int 329 /*ARGSUSED*/ 330 _citrus_NONE_ctype_wctob(_citrus_ctype_rec_t * __restrict cc __unused, 331 wint_t wc, int * __restrict cresult) 332 { 333 if (wc == WEOF || wc & ~0xFF) 334 *cresult = EOF; 335 else 336 *cresult = (int)wc; 337 return (0); 338 } 339 340 /* ---------------------------------------------------------------------- */ 341 342 _CITRUS_STDENC_DECLS(NONE); 343 _CITRUS_STDENC_DEF_OPS(NONE); 344 struct _citrus_stdenc_traits _citrus_NONE_stdenc_traits = { 345 0, /* et_state_size */ 346 1, /* mb_cur_max */ 347 }; 348 349 static int 350 /*ARGSUSED*/ 351 _citrus_NONE_stdenc_init(struct _citrus_stdenc * __restrict ce, 352 const void *var __unused, size_t lenvar __unused, 353 struct _citrus_stdenc_traits * __restrict et) 354 { 355 356 et->et_state_size = 0; 357 et->et_mb_cur_max = 1; 358 359 ce->ce_closure = NULL; 360 361 return (0); 362 } 363 364 static void 365 /*ARGSUSED*/ 366 _citrus_NONE_stdenc_uninit(struct _citrus_stdenc *ce __unused) 367 { 368 } 369 370 static int 371 /*ARGSUSED*/ 372 _citrus_NONE_stdenc_init_state(struct _citrus_stdenc * __restrict ce __unused, 373 void * __restrict ps __unused) 374 { 375 return (0); 376 } 377 378 static int 379 /*ARGSUSED*/ 380 _citrus_NONE_stdenc_mbtocs(struct _citrus_stdenc * __restrict ce __unused, 381 _csid_t *csid, _index_t *idx, 382 const char **s, size_t n, 383 void *ps __unused, size_t *nresult) 384 { 385 386 _DIAGASSERT(csid != NULL && idx != NULL); 387 388 if (n<1) { 389 *nresult = (size_t)-2; 390 return (0); 391 } 392 393 *csid = 0; 394 *idx = (_index_t)(unsigned char)*(*s)++; 395 *nresult = *idx == 0 ? 0 : 1; 396 397 return (0); 398 } 399 400 static int 401 /*ARGSUSED*/ 402 _citrus_NONE_stdenc_cstomb(struct _citrus_stdenc * __restrict ce __unused, 403 char *s, size_t n, 404 _csid_t csid, _index_t idx, 405 void *ps __unused, size_t *nresult) 406 { 407 408 if (csid == _CITRUS_CSID_INVALID) { 409 *nresult = 0; 410 return (0); 411 } 412 if (n<1) { 413 *nresult = (size_t)-1; 414 return (E2BIG); 415 } 416 if (csid != 0 || (idx&0xFF) != idx) 417 return (EILSEQ); 418 419 *s = (char)idx; 420 *nresult = 1; 421 422 return (0); 423 } 424 425 static int 426 /*ARGSUSED*/ 427 _citrus_NONE_stdenc_mbtowc(struct _citrus_stdenc * __restrict ce __unused, 428 _wc_t * __restrict pwc, 429 const char ** __restrict s, size_t n, 430 void * __restrict pspriv __unused, 431 size_t * __restrict nresult) 432 { 433 if (s == NULL) { 434 *nresult = 0; 435 return (0); 436 } 437 if (n == 0) { 438 *nresult = (size_t)-2; 439 return (0); 440 } 441 442 if (pwc != NULL) 443 *pwc = (_wc_t)(unsigned char) **s; 444 445 *nresult = *s == '\0' ? 0 : 1; 446 return (0); 447 } 448 449 static int 450 /*ARGSUSED*/ 451 _citrus_NONE_stdenc_wctomb(struct _citrus_stdenc * __restrict ce __unused, 452 char * __restrict s, size_t n, _wc_t wc, 453 void * __restrict pspriv __unused, 454 size_t * __restrict nresult) 455 { 456 if ((wc&~0xFFU) != 0) { 457 *nresult = (size_t)-1; 458 return (EILSEQ); 459 } 460 if (n==0) { 461 *nresult = (size_t)-1; 462 return (E2BIG); 463 } 464 465 *nresult = 1; 466 if (s!=NULL && n>0) 467 *s = (char)wc; 468 469 return (0); 470 } 471 472 static int 473 /*ARGSUSED*/ 474 _citrus_NONE_stdenc_put_state_reset(struct _citrus_stdenc * __restrict ce __unused, 475 char * __restrict s __unused, 476 size_t n __unused, 477 void * __restrict pspriv __unused, 478 size_t * __restrict nresult) 479 { 480 481 *nresult = 0; 482 483 return (0); 484 } 485