1 /* $NetBSD: citrus_big5.c,v 1.11 2006/11/22 23:38:27 tnozaki Exp $ */
2 /* $DragonFly: src/lib/libc/citrus/modules/citrus_big5.c,v 1.2 2008/04/10 10:21:01 hasso Exp $ */
5 * Copyright (c)2002, 2006 Citrus Project,
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
32 * The Regents of the University of California. All rights reserved.
34 * This code is derived from software contributed to Berkeley by
35 * Paul Borman at Krystal Technologies.
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62 #include <sys/queue.h>
63 #include <sys/types.h>
75 #include "citrus_namespace.h"
76 #include "citrus_types.h"
77 #include "citrus_bcs.h"
78 #include "citrus_module.h"
79 #include "citrus_ctype.h"
80 #include "citrus_stdenc.h"
81 #include "citrus_big5.h"
83 #include "citrus_prop.h"
85 /* ----------------------------------------------------------------------
86 * private stuffs used by templates
94 typedef struct _BIG5Exclude {
95 TAILQ_ENTRY(_BIG5Exclude) entry;
99 typedef TAILQ_HEAD(_BIG5ExcludeList, _BIG5Exclude) _BIG5ExcludeList;
103 _BIG5ExcludeList excludes;
107 _BIG5EncodingInfo ei;
109 /* for future multi-locale facility */
112 _BIG5State s_mbrtowc;
114 _BIG5State s_mbsrtowcs;
115 _BIG5State s_wcrtomb;
116 _BIG5State s_wcsrtombs;
121 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
122 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
124 #define _FUNCNAME(m) _citrus_BIG5_##m
125 #define _ENCODING_INFO _BIG5EncodingInfo
126 #define _CTYPE_INFO _BIG5CTypeInfo
127 #define _ENCODING_STATE _BIG5State
128 #define _ENCODING_MB_CUR_MAX(_ei_) 2
129 #define _ENCODING_IS_STATE_DEPENDENT 0
130 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
135 _citrus_BIG5_init_state(_BIG5EncodingInfo * __restrict ei,
136 _BIG5State * __restrict s)
138 memset(s, 0, sizeof(*s));
143 _citrus_BIG5_pack_state(_BIG5EncodingInfo * __restrict ei,
144 void * __restrict pspriv,
145 const _BIG5State * __restrict s)
147 memcpy(pspriv, (const void *)s, sizeof(*s));
152 _citrus_BIG5_unpack_state(_BIG5EncodingInfo * __restrict ei,
153 _BIG5State * __restrict s,
154 const void * __restrict pspriv)
156 memcpy((void *)s, pspriv, sizeof(*s));
160 _citrus_BIG5_check(_BIG5EncodingInfo *ei, u_int c)
162 _DIAGASSERT(ei != NULL);
164 return (ei->cell[c & 0xFF] & 0x1) ? 2 : 1;
168 _citrus_BIG5_check2(_BIG5EncodingInfo *ei, u_int c)
170 _DIAGASSERT(ei != NULL);
172 return (ei->cell[c & 0xFF] & 0x2) ? 1 : 0;
176 _citrus_BIG5_check_excludes(_BIG5EncodingInfo *ei, wint_t c)
178 _BIG5Exclude *exclude;
180 _DIAGASSERT(ei != NULL);
182 TAILQ_FOREACH(exclude, &ei->excludes, entry) {
183 if (c >= exclude->start && c <= exclude->end)
190 _citrus_BIG5_fill_rowcol(void ** __restrict ctx, const char * __restrict s,
191 uint64_t start, uint64_t end)
193 _BIG5EncodingInfo *ei;
197 _DIAGASSERT(ctx != NULL && *ctx != NULL);
199 if (start > 0xFF || end > 0xFF)
201 ei = (_BIG5EncodingInfo *)*ctx;
202 i = strcmp("row", s) ? 1 : 0;
204 for (n = start; n <= end; ++n)
205 ei->cell[n & 0xFF] |= i;
211 _citrus_BIG5_fill_excludes(void ** __restrict ctx, const char * __restrict s,
212 uint64_t start, uint64_t end)
214 _BIG5EncodingInfo *ei;
215 _BIG5Exclude *exclude;
217 _DIAGASSERT(ctx != NULL && *ctx != NULL);
219 if (start > 0xFFFF || end > 0xFFFF)
221 ei = (_BIG5EncodingInfo *)*ctx;
222 exclude = TAILQ_LAST(&ei->excludes, _BIG5ExcludeList);
223 if (exclude != NULL && (wint_t)start <= exclude->end)
225 exclude = (void *)malloc(sizeof(*exclude));
228 exclude->start = (wint_t)start;
229 exclude->end = (wint_t)end;
230 TAILQ_INSERT_TAIL(&ei->excludes, exclude, entry);
235 static const _citrus_prop_hint_t root_hints[] = {
236 _CITRUS_PROP_HINT_NUM("row", &_citrus_BIG5_fill_rowcol),
237 _CITRUS_PROP_HINT_NUM("col", &_citrus_BIG5_fill_rowcol),
238 _CITRUS_PROP_HINT_NUM("excludes", &_citrus_BIG5_fill_excludes),
239 _CITRUS_PROP_HINT_END
244 _citrus_BIG5_encoding_module_uninit(_BIG5EncodingInfo *ei)
246 _BIG5Exclude *exclude;
248 _DIAGASSERT(ei != NULL);
250 while ((exclude = TAILQ_FIRST(&ei->excludes)) != NULL) {
251 TAILQ_REMOVE(&ei->excludes, exclude, entry);
258 _citrus_BIG5_encoding_module_init(_BIG5EncodingInfo * __restrict ei,
259 const void * __restrict var, size_t lenvar)
264 _DIAGASSERT(ei != NULL);
266 memset((void *)ei, 0, sizeof(*ei));
267 TAILQ_INIT(&ei->excludes);
269 if (lenvar > 0 && var != NULL) {
270 s = _bcs_skip_ws_len((const char *)var, &lenvar);
271 if (lenvar > 0 && *s != '\0') {
272 err = _citrus_prop_parse_variable(
273 root_hints, (void *)ei, s, lenvar);
277 _citrus_BIG5_encoding_module_uninit(ei);
278 memset((void *)ei, 0, sizeof(*ei));
279 TAILQ_INIT(&ei->excludes);
283 /* fallback Big5-1984, for backward compatibility. */
284 _citrus_BIG5_fill_rowcol((void **)&ei, "row", 0xA1, 0xFE);
285 _citrus_BIG5_fill_rowcol((void **)&ei, "col", 0x40, 0x7E);
286 _citrus_BIG5_fill_rowcol((void **)&ei, "col", 0xA1, 0xFE);
293 _citrus_BIG5_mbrtowc_priv(_BIG5EncodingInfo * __restrict ei,
294 wchar_t * __restrict pwc,
295 const char ** __restrict s, size_t n,
296 _BIG5State * __restrict psenc,
297 size_t * __restrict nresult)
304 _DIAGASSERT(nresult != 0);
305 _DIAGASSERT(ei != NULL);
306 _DIAGASSERT(psenc != NULL);
307 _DIAGASSERT(s != NULL && *s != NULL);
312 _citrus_BIG5_init_state(ei, psenc);
317 chlenbak = psenc->chlen;
319 /* make sure we have the first byte in the buffer */
320 switch (psenc->chlen) {
324 psenc->ch[0] = *s0++;
335 c = _citrus_BIG5_check(ei, psenc->ch[0] & 0xff);
338 while (psenc->chlen < c) {
342 psenc->ch[psenc->chlen] = *s0++;
349 wchar = psenc->ch[0] & 0xff;
352 if (!_citrus_BIG5_check2(ei, psenc->ch[1] & 0xff))
354 wchar = ((psenc->ch[0] & 0xff) << 8) | (psenc->ch[1] & 0xff);
361 if (_citrus_BIG5_check_excludes(ei, (wint_t)wchar) != 0)
371 *nresult = c - chlenbak;
377 *nresult = (size_t)-1;
382 *nresult = (size_t)-2;
388 _citrus_BIG5_wcrtomb_priv(_BIG5EncodingInfo * __restrict ei,
390 size_t n, wchar_t wc, _BIG5State * __restrict psenc,
391 size_t * __restrict nresult)
395 _DIAGASSERT(ei != NULL);
396 _DIAGASSERT(nresult != 0);
397 _DIAGASSERT(s != NULL);
399 /* check invalid sequence */
401 _citrus_BIG5_check_excludes(ei, (wint_t)wc) != 0) {
407 if (_citrus_BIG5_check(ei, (wc >> 8) & 0xff) != 2 ||
408 !_citrus_BIG5_check2(ei, wc & 0xff)) {
414 if (wc & ~0xff || !_citrus_BIG5_check(ei, wc & 0xff)) {
422 /* bound check failure */
428 s[0] = (wc >> 8) & 0xff;
438 *nresult = (size_t)-1;
444 _citrus_BIG5_stdenc_wctocs(_BIG5EncodingInfo * __restrict ei,
445 _csid_t * __restrict csid,
446 _index_t * __restrict idx, wchar_t wc)
449 _DIAGASSERT(csid != NULL && idx != NULL);
451 *csid = (wc < 0x100) ? 0 : 1;
459 _citrus_BIG5_stdenc_cstowc(_BIG5EncodingInfo * __restrict ei,
460 wchar_t * __restrict wc,
461 _csid_t csid, _index_t idx)
463 _DIAGASSERT(wc != NULL);
479 _citrus_BIG5_stdenc_get_state_desc_generic(_BIG5EncodingInfo * __restrict ei,
480 _BIG5State * __restrict psenc,
481 int * __restrict rstate)
484 if (psenc->chlen == 0)
485 *rstate = _STDENC_SDGEN_INITIAL;
487 *rstate = _STDENC_SDGEN_INCOMPLETE_CHAR;
492 /* ----------------------------------------------------------------------
493 * public interface for ctype
496 _CITRUS_CTYPE_DECLS(BIG5);
497 _CITRUS_CTYPE_DEF_OPS(BIG5);
499 #include "citrus_ctype_template.h"
502 /* ----------------------------------------------------------------------
503 * public interface for stdenc
506 _CITRUS_STDENC_DECLS(BIG5);
507 _CITRUS_STDENC_DEF_OPS(BIG5);
509 #include "citrus_stdenc_template.h"