1 /* $NetBSD: citrus_euctw.c,v 1.11 2008/06/14 16:01:07 tnozaki 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 /*- 30 * Copyright (c)1999 Citrus Project, 31 * All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 42 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 43 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 44 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 45 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 46 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 47 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 48 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 50 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 51 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 52 * SUCH DAMAGE. 53 * 54 * $Citrus: xpg4dl/FreeBSD/lib/libc/locale/euctw.c,v 1.13 2001/06/21 01:51:44 yamt Exp $ 55 */ 56 57 #include <sys/cdefs.h> 58 #if defined(LIBC_SCCS) && !defined(lint) 59 __RCSID("$NetBSD: citrus_euctw.c,v 1.11 2008/06/14 16:01:07 tnozaki Exp $"); 60 #endif /* LIBC_SCCS and not lint */ 61 62 #include <assert.h> 63 #include <errno.h> 64 #include <string.h> 65 #include <stdio.h> 66 #include <stdlib.h> 67 #include <stddef.h> 68 #include <wchar.h> 69 #include <sys/types.h> 70 #include <limits.h> 71 72 #include "citrus_namespace.h" 73 #include "citrus_types.h" 74 #include "citrus_module.h" 75 #include "citrus_ctype.h" 76 #include "citrus_stdenc.h" 77 #include "citrus_euctw.h" 78 79 80 /* ---------------------------------------------------------------------- 81 * private stuffs used by templates 82 */ 83 84 typedef struct { 85 char ch[4]; 86 int chlen; 87 } _EUCTWState; 88 89 typedef struct { 90 int dummy; 91 } _EUCTWEncodingInfo; 92 typedef struct { 93 _EUCTWEncodingInfo ei; 94 struct { 95 /* for future multi-locale facility */ 96 _EUCTWState s_mblen; 97 _EUCTWState s_mbrlen; 98 _EUCTWState s_mbrtowc; 99 _EUCTWState s_mbtowc; 100 _EUCTWState s_mbsrtowcs; 101 _EUCTWState s_wcrtomb; 102 _EUCTWState s_wcsrtombs; 103 _EUCTWState s_wctomb; 104 } states; 105 } _EUCTWCTypeInfo; 106 107 #define _SS2 0x008e 108 #define _SS3 0x008f 109 110 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei) 111 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_ 112 113 #define _FUNCNAME(m) _citrus_EUCTW_##m 114 #define _ENCODING_INFO _EUCTWEncodingInfo 115 #define _CTYPE_INFO _EUCTWCTypeInfo 116 #define _ENCODING_STATE _EUCTWState 117 #define _ENCODING_MB_CUR_MAX(_ei_) 4 118 #define _ENCODING_IS_STATE_DEPENDENT 0 119 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0 120 121 static __inline int 122 _citrus_EUCTW_cs(u_int c) 123 { 124 c &= 0xff; 125 126 return ((c & 0x80) ? (c == _SS2 ? 2 : 1) : 0); 127 } 128 129 static __inline int 130 _citrus_EUCTW_count(int cs) 131 { 132 switch (cs) { 133 case 0: 134 return 1; 135 case 1: 136 return 2; 137 case 2: 138 return 4; 139 case 3: 140 abort(); 141 /*NOTREACHED*/ 142 } 143 return 0; 144 } 145 146 static __inline void 147 /*ARGSUSED*/ 148 _citrus_EUCTW_init_state(_EUCTWEncodingInfo * __restrict ei, 149 _EUCTWState * __restrict s) 150 { 151 memset(s, 0, sizeof(*s)); 152 } 153 154 static __inline void 155 /*ARGSUSED*/ 156 _citrus_EUCTW_pack_state(_EUCTWEncodingInfo * __restrict ei, 157 void * __restrict pspriv, 158 const _EUCTWState * __restrict s) 159 { 160 memcpy(pspriv, (const void *)s, sizeof(*s)); 161 } 162 163 static __inline void 164 /*ARGSUSED*/ 165 _citrus_EUCTW_unpack_state(_EUCTWEncodingInfo * __restrict ei, 166 _EUCTWState * __restrict s, 167 const void * __restrict pspriv) 168 { 169 memcpy((void *)s, pspriv, sizeof(*s)); 170 } 171 172 static int 173 /*ARGSUSED*/ 174 _citrus_EUCTW_encoding_module_init(_EUCTWEncodingInfo * __restrict ei, 175 const void * __restrict var, size_t lenvar) 176 { 177 178 _DIAGASSERT(ei != NULL); 179 180 memset((void *)ei, 0, sizeof(*ei)); 181 182 return 0; 183 } 184 185 static void 186 /*ARGSUSED*/ 187 _citrus_EUCTW_encoding_module_uninit(_EUCTWEncodingInfo *ei) 188 { 189 } 190 191 static int 192 _citrus_EUCTW_mbrtowc_priv(_EUCTWEncodingInfo * __restrict ei, 193 wchar_t * __restrict pwc, 194 const char ** __restrict s, 195 size_t n, _EUCTWState * __restrict psenc, 196 size_t * __restrict nresult) 197 { 198 wchar_t wchar; 199 int c, cs; 200 int chlenbak; 201 const char *s0; 202 203 _DIAGASSERT(nresult != 0); 204 _DIAGASSERT(ei != NULL); 205 _DIAGASSERT(psenc != NULL); 206 _DIAGASSERT(s != NULL); 207 208 s0 = *s; 209 210 if (s0 == NULL) { 211 _citrus_EUCTW_init_state(ei, psenc); 212 *nresult = 0; /* state independent */ 213 return (0); 214 } 215 216 chlenbak = psenc->chlen; 217 218 /* make sure we have the first byte in the buffer */ 219 switch (psenc->chlen) { 220 case 0: 221 if (n < 1) 222 goto restart; 223 psenc->ch[0] = *s0++; 224 psenc->chlen = 1; 225 n--; 226 break; 227 case 1: 228 case 2: 229 break; 230 default: 231 /* illgeal state */ 232 goto ilseq; 233 } 234 235 c = _citrus_EUCTW_count(cs = _citrus_EUCTW_cs(psenc->ch[0] & 0xff)); 236 if (c == 0) 237 goto ilseq; 238 while (psenc->chlen < c) { 239 if (n < 1) 240 goto ilseq; 241 psenc->ch[psenc->chlen] = *s0++; 242 psenc->chlen++; 243 n--; 244 } 245 246 wchar = 0; 247 switch (cs) { 248 case 0: 249 if (psenc->ch[0] & 0x80) 250 goto ilseq; 251 wchar = psenc->ch[0] & 0xff; 252 break; 253 case 1: 254 if (!(psenc->ch[0] & 0x80) || !(psenc->ch[1] & 0x80)) 255 goto ilseq; 256 wchar = ((psenc->ch[0] & 0xff) << 8) | (psenc->ch[1] & 0xff); 257 wchar |= 'G' << 24; 258 break; 259 case 2: 260 if ((u_char)psenc->ch[1] < 0xa1 || 0xa7 < (u_char)psenc->ch[1]) 261 goto ilseq; 262 if (!(psenc->ch[2] & 0x80) || !(psenc->ch[3] & 0x80)) 263 goto ilseq; 264 wchar = ((psenc->ch[2] & 0xff) << 8) | (psenc->ch[3] & 0xff); 265 wchar |= ('G' + psenc->ch[1] - 0xa1) << 24; 266 break; 267 default: 268 goto ilseq; 269 } 270 271 *s = s0; 272 psenc->chlen = 0; 273 274 if (pwc) 275 *pwc = wchar; 276 277 if (!wchar) 278 *nresult = 0; 279 else 280 *nresult = c - chlenbak; 281 282 return (0); 283 284 ilseq: 285 psenc->chlen = 0; 286 *nresult = (size_t)-1; 287 return (EILSEQ); 288 289 restart: 290 *s = s0; 291 *nresult = (size_t)-1; 292 return (0); 293 } 294 295 static int 296 _citrus_EUCTW_wcrtomb_priv(_EUCTWEncodingInfo * __restrict ei, 297 char * __restrict s, size_t n, wchar_t wc, 298 _EUCTWState * __restrict psenc, 299 size_t * __restrict nresult) 300 { 301 wchar_t cs = wc & 0x7f000080; 302 wchar_t v; 303 int i, len, clen, ret; 304 305 _DIAGASSERT(ei != NULL); 306 _DIAGASSERT(nresult != 0); 307 _DIAGASSERT(s != NULL); 308 309 clen = 1; 310 if (wc & 0x00007f00) 311 clen = 2; 312 if ((wc & 0x007f0000) && !(wc & 0x00800000)) 313 clen = 3; 314 315 if (clen == 1 && cs == 0x00000000) { 316 /* ASCII */ 317 len = 1; 318 if (n < len) { 319 ret = E2BIG; 320 goto err; 321 } 322 v = wc & 0x0000007f; 323 } else if (clen == 2 && cs == ('G' << 24)) { 324 /* CNS-11643-1 */ 325 len = 2; 326 if (n < len) { 327 ret = E2BIG; 328 goto err; 329 } 330 v = wc & 0x00007f7f; 331 v |= 0x00008080; 332 } else if (clen == 2 && 'H' <= (cs >> 24) && (cs >> 24) <= 'M') { 333 /* CNS-11643-[2-7] */ 334 len = 4; 335 if (n < len) { 336 ret = E2BIG; 337 goto err; 338 } 339 *s++ = _SS2; 340 *s++ = (cs >> 24) - 'H' + 0xa2; 341 v = wc & 0x00007f7f; 342 v |= 0x00008080; 343 } else { 344 ret = EILSEQ; 345 goto err; 346 } 347 348 i = clen; 349 while (i-- > 0) 350 *s++ = (v >> (i << 3)) & 0xff; 351 352 *nresult = len; 353 return 0; 354 355 err: 356 *nresult = (size_t)-1; 357 return ret; 358 } 359 360 static __inline int 361 /*ARGSUSED*/ 362 _citrus_EUCTW_stdenc_wctocs(_EUCTWEncodingInfo * __restrict ei, 363 _csid_t * __restrict csid, 364 _index_t * __restrict idx, wchar_t wc) 365 { 366 367 _DIAGASSERT(ei != NULL && csid != NULL && idx != NULL); 368 369 *csid = (_csid_t)(wc >> 24) & 0xFF; 370 *idx = (_index_t)(wc & 0x7F7F); 371 372 return (0); 373 } 374 375 static __inline int 376 /*ARGSUSED*/ 377 _citrus_EUCTW_stdenc_cstowc(_EUCTWEncodingInfo * __restrict ei, 378 wchar_t * __restrict wc, 379 _csid_t csid, _index_t idx) 380 { 381 382 _DIAGASSERT(ei != NULL && wc != NULL); 383 384 if (csid==0) { 385 if ((idx & ~0x7F) != 0) 386 return (EINVAL); 387 *wc = (wchar_t)idx; 388 } else { 389 if (csid < 'G' || csid > 'M' || (idx & ~0x7F7F) != 0) 390 return (EINVAL); 391 *wc = (wchar_t)idx | ((wchar_t)csid<<24); 392 } 393 394 return (0); 395 } 396 397 static __inline int 398 /*ARGSUSED*/ 399 _citrus_EUCTW_stdenc_get_state_desc_generic(_EUCTWEncodingInfo * __restrict ei, 400 _EUCTWState * __restrict psenc, 401 int * __restrict rstate) 402 { 403 404 if (psenc->chlen == 0) 405 *rstate = _STDENC_SDGEN_INITIAL; 406 else 407 *rstate = _STDENC_SDGEN_INCOMPLETE_CHAR; 408 409 return 0; 410 } 411 412 /* ---------------------------------------------------------------------- 413 * public interface for ctype 414 */ 415 416 _CITRUS_CTYPE_DECLS(EUCTW); 417 _CITRUS_CTYPE_DEF_OPS(EUCTW); 418 419 #include "citrus_ctype_template.h" 420 421 /* ---------------------------------------------------------------------- 422 * public interface for stdenc 423 */ 424 425 _CITRUS_STDENC_DECLS(EUCTW); 426 _CITRUS_STDENC_DEF_OPS(EUCTW); 427 428 #include "citrus_stdenc_template.h" 429