1 /* $NetBSD: citrus_euctw.c,v 1.12 2013/05/28 16:57:56 joerg 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 1.12 2013/05/28 16:57:56 joerg 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_mbsnrtowcs;
102 _EUCTWState s_wcrtomb;
103 _EUCTWState s_wcsrtombs;
104 _EUCTWState s_wcsnrtombs;
105 _EUCTWState s_wctomb;
106 } states;
107 } _EUCTWCTypeInfo;
108
109 #define _SS2 0x008e
110 #define _SS3 0x008f
111
112 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
113 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
114
115 #define _FUNCNAME(m) _citrus_EUCTW_##m
116 #define _ENCODING_INFO _EUCTWEncodingInfo
117 #define _CTYPE_INFO _EUCTWCTypeInfo
118 #define _ENCODING_STATE _EUCTWState
119 #define _ENCODING_MB_CUR_MAX(_ei_) 4
120 #define _ENCODING_IS_STATE_DEPENDENT 0
121 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
122
123 static __inline int
_citrus_EUCTW_cs(u_int c)124 _citrus_EUCTW_cs(u_int c)
125 {
126 c &= 0xff;
127
128 return ((c & 0x80) ? (c == _SS2 ? 2 : 1) : 0);
129 }
130
131 static __inline int
_citrus_EUCTW_count(int cs)132 _citrus_EUCTW_count(int cs)
133 {
134 switch (cs) {
135 case 0:
136 return 1;
137 case 1:
138 return 2;
139 case 2:
140 return 4;
141 case 3:
142 abort();
143 /*NOTREACHED*/
144 }
145 return 0;
146 }
147
148 static __inline void
149 /*ARGSUSED*/
_citrus_EUCTW_init_state(_EUCTWEncodingInfo * __restrict ei,_EUCTWState * __restrict s)150 _citrus_EUCTW_init_state(_EUCTWEncodingInfo * __restrict ei,
151 _EUCTWState * __restrict s)
152 {
153 memset(s, 0, sizeof(*s));
154 }
155
156 static __inline void
157 /*ARGSUSED*/
_citrus_EUCTW_pack_state(_EUCTWEncodingInfo * __restrict ei,void * __restrict pspriv,const _EUCTWState * __restrict s)158 _citrus_EUCTW_pack_state(_EUCTWEncodingInfo * __restrict ei,
159 void * __restrict pspriv,
160 const _EUCTWState * __restrict s)
161 {
162 memcpy(pspriv, (const void *)s, sizeof(*s));
163 }
164
165 static __inline void
166 /*ARGSUSED*/
_citrus_EUCTW_unpack_state(_EUCTWEncodingInfo * __restrict ei,_EUCTWState * __restrict s,const void * __restrict pspriv)167 _citrus_EUCTW_unpack_state(_EUCTWEncodingInfo * __restrict ei,
168 _EUCTWState * __restrict s,
169 const void * __restrict pspriv)
170 {
171 memcpy((void *)s, pspriv, sizeof(*s));
172 }
173
174 static int
175 /*ARGSUSED*/
_citrus_EUCTW_encoding_module_init(_EUCTWEncodingInfo * __restrict ei,const void * __restrict var,size_t lenvar)176 _citrus_EUCTW_encoding_module_init(_EUCTWEncodingInfo * __restrict ei,
177 const void * __restrict var, size_t lenvar)
178 {
179
180 _DIAGASSERT(ei != NULL);
181
182 memset((void *)ei, 0, sizeof(*ei));
183
184 return 0;
185 }
186
187 static void
188 /*ARGSUSED*/
_citrus_EUCTW_encoding_module_uninit(_EUCTWEncodingInfo * ei)189 _citrus_EUCTW_encoding_module_uninit(_EUCTWEncodingInfo *ei)
190 {
191 }
192
193 static int
_citrus_EUCTW_mbrtowc_priv(_EUCTWEncodingInfo * __restrict ei,wchar_t * __restrict pwc,const char ** __restrict s,size_t n,_EUCTWState * __restrict psenc,size_t * __restrict nresult)194 _citrus_EUCTW_mbrtowc_priv(_EUCTWEncodingInfo * __restrict ei,
195 wchar_t * __restrict pwc,
196 const char ** __restrict s,
197 size_t n, _EUCTWState * __restrict psenc,
198 size_t * __restrict nresult)
199 {
200 wchar_t wchar;
201 int c, cs;
202 int chlenbak;
203 const char *s0;
204
205 _DIAGASSERT(nresult != 0);
206 _DIAGASSERT(ei != NULL);
207 _DIAGASSERT(psenc != NULL);
208 _DIAGASSERT(s != NULL);
209
210 s0 = *s;
211
212 if (s0 == NULL) {
213 _citrus_EUCTW_init_state(ei, psenc);
214 *nresult = 0; /* state independent */
215 return (0);
216 }
217
218 chlenbak = psenc->chlen;
219
220 /* make sure we have the first byte in the buffer */
221 switch (psenc->chlen) {
222 case 0:
223 if (n < 1)
224 goto restart;
225 psenc->ch[0] = *s0++;
226 psenc->chlen = 1;
227 n--;
228 break;
229 case 1:
230 case 2:
231 break;
232 default:
233 /* illgeal state */
234 goto ilseq;
235 }
236
237 c = _citrus_EUCTW_count(cs = _citrus_EUCTW_cs(psenc->ch[0] & 0xff));
238 if (c == 0)
239 goto ilseq;
240 while (psenc->chlen < c) {
241 if (n < 1)
242 goto ilseq;
243 psenc->ch[psenc->chlen] = *s0++;
244 psenc->chlen++;
245 n--;
246 }
247
248 wchar = 0;
249 switch (cs) {
250 case 0:
251 if (psenc->ch[0] & 0x80)
252 goto ilseq;
253 wchar = psenc->ch[0] & 0xff;
254 break;
255 case 1:
256 if (!(psenc->ch[0] & 0x80) || !(psenc->ch[1] & 0x80))
257 goto ilseq;
258 wchar = ((psenc->ch[0] & 0xff) << 8) | (psenc->ch[1] & 0xff);
259 wchar |= 'G' << 24;
260 break;
261 case 2:
262 if ((u_char)psenc->ch[1] < 0xa1 || 0xa7 < (u_char)psenc->ch[1])
263 goto ilseq;
264 if (!(psenc->ch[2] & 0x80) || !(psenc->ch[3] & 0x80))
265 goto ilseq;
266 wchar = ((psenc->ch[2] & 0xff) << 8) | (psenc->ch[3] & 0xff);
267 wchar |= ('G' + psenc->ch[1] - 0xa1) << 24;
268 break;
269 default:
270 goto ilseq;
271 }
272
273 *s = s0;
274 psenc->chlen = 0;
275
276 if (pwc)
277 *pwc = wchar;
278
279 if (!wchar)
280 *nresult = 0;
281 else
282 *nresult = c - chlenbak;
283
284 return (0);
285
286 ilseq:
287 psenc->chlen = 0;
288 *nresult = (size_t)-1;
289 return (EILSEQ);
290
291 restart:
292 *s = s0;
293 *nresult = (size_t)-1;
294 return (0);
295 }
296
297 static int
_citrus_EUCTW_wcrtomb_priv(_EUCTWEncodingInfo * __restrict ei,char * __restrict s,size_t n,wchar_t wc,_EUCTWState * __restrict psenc,size_t * __restrict nresult)298 _citrus_EUCTW_wcrtomb_priv(_EUCTWEncodingInfo * __restrict ei,
299 char * __restrict s, size_t n, wchar_t wc,
300 _EUCTWState * __restrict psenc,
301 size_t * __restrict nresult)
302 {
303 wchar_t cs = wc & 0x7f000080;
304 wchar_t v;
305 int i, len, clen, ret;
306
307 _DIAGASSERT(ei != NULL);
308 _DIAGASSERT(nresult != 0);
309 _DIAGASSERT(s != NULL);
310
311 clen = 1;
312 if (wc & 0x00007f00)
313 clen = 2;
314 if ((wc & 0x007f0000) && !(wc & 0x00800000))
315 clen = 3;
316
317 if (clen == 1 && cs == 0x00000000) {
318 /* ASCII */
319 len = 1;
320 if (n < len) {
321 ret = E2BIG;
322 goto err;
323 }
324 v = wc & 0x0000007f;
325 } else if (clen == 2 && cs == ('G' << 24)) {
326 /* CNS-11643-1 */
327 len = 2;
328 if (n < len) {
329 ret = E2BIG;
330 goto err;
331 }
332 v = wc & 0x00007f7f;
333 v |= 0x00008080;
334 } else if (clen == 2 && 'H' <= (cs >> 24) && (cs >> 24) <= 'M') {
335 /* CNS-11643-[2-7] */
336 len = 4;
337 if (n < len) {
338 ret = E2BIG;
339 goto err;
340 }
341 *s++ = _SS2;
342 *s++ = (cs >> 24) - 'H' + 0xa2;
343 v = wc & 0x00007f7f;
344 v |= 0x00008080;
345 } else {
346 ret = EILSEQ;
347 goto err;
348 }
349
350 i = clen;
351 while (i-- > 0)
352 *s++ = (v >> (i << 3)) & 0xff;
353
354 *nresult = len;
355 return 0;
356
357 err:
358 *nresult = (size_t)-1;
359 return ret;
360 }
361
362 static __inline int
363 /*ARGSUSED*/
_citrus_EUCTW_stdenc_wctocs(_EUCTWEncodingInfo * __restrict ei,_csid_t * __restrict csid,_index_t * __restrict idx,wchar_t wc)364 _citrus_EUCTW_stdenc_wctocs(_EUCTWEncodingInfo * __restrict ei,
365 _csid_t * __restrict csid,
366 _index_t * __restrict idx, wchar_t wc)
367 {
368
369 _DIAGASSERT(ei != NULL && csid != NULL && idx != NULL);
370
371 *csid = (_csid_t)(wc >> 24) & 0xFF;
372 *idx = (_index_t)(wc & 0x7F7F);
373
374 return (0);
375 }
376
377 static __inline int
378 /*ARGSUSED*/
_citrus_EUCTW_stdenc_cstowc(_EUCTWEncodingInfo * __restrict ei,wchar_t * __restrict wc,_csid_t csid,_index_t idx)379 _citrus_EUCTW_stdenc_cstowc(_EUCTWEncodingInfo * __restrict ei,
380 wchar_t * __restrict wc,
381 _csid_t csid, _index_t idx)
382 {
383
384 _DIAGASSERT(ei != NULL && wc != NULL);
385
386 if (csid==0) {
387 if ((idx & ~0x7F) != 0)
388 return (EINVAL);
389 *wc = (wchar_t)idx;
390 } else {
391 if (csid < 'G' || csid > 'M' || (idx & ~0x7F7F) != 0)
392 return (EINVAL);
393 *wc = (wchar_t)idx | ((wchar_t)csid<<24);
394 }
395
396 return (0);
397 }
398
399 static __inline int
400 /*ARGSUSED*/
_citrus_EUCTW_stdenc_get_state_desc_generic(_EUCTWEncodingInfo * __restrict ei,_EUCTWState * __restrict psenc,int * __restrict rstate)401 _citrus_EUCTW_stdenc_get_state_desc_generic(_EUCTWEncodingInfo * __restrict ei,
402 _EUCTWState * __restrict psenc,
403 int * __restrict rstate)
404 {
405
406 if (psenc->chlen == 0)
407 *rstate = _STDENC_SDGEN_INITIAL;
408 else
409 *rstate = _STDENC_SDGEN_INCOMPLETE_CHAR;
410
411 return 0;
412 }
413
414 /* ----------------------------------------------------------------------
415 * public interface for ctype
416 */
417
418 _CITRUS_CTYPE_DECLS(EUCTW);
419 _CITRUS_CTYPE_DEF_OPS(EUCTW);
420
421 #include "citrus_ctype_template.h"
422
423 /* ----------------------------------------------------------------------
424 * public interface for stdenc
425 */
426
427 _CITRUS_STDENC_DECLS(EUCTW);
428 _CITRUS_STDENC_DEF_OPS(EUCTW);
429
430 #include "citrus_stdenc_template.h"
431