1 /* $FreeBSD: head/lib/libiconv_modules/BIG5/citrus_big5.c 252583 2013-07-03 18:27:45Z peter $ */
2 /* $NetBSD: citrus_big5.c,v 1.12 2008/06/14 16:01:07 tnozaki 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/cdefs.h>
63 #include <sys/queue.h>
64 #include <sys/types.h>
76 #include "citrus_namespace.h"
77 #include "citrus_prop.h"
78 #include "citrus_types.h"
79 #include "citrus_bcs.h"
80 #include "citrus_module.h"
81 #include "citrus_stdenc.h"
82 #include "citrus_big5.h"
84 /* ----------------------------------------------------------------------
85 * private stuffs used by templates
93 typedef struct _BIG5Exclude {
94 TAILQ_ENTRY(_BIG5Exclude) entry;
99 typedef TAILQ_HEAD(_BIG5ExcludeList, _BIG5Exclude) _BIG5ExcludeList;
102 _BIG5ExcludeList excludes;
106 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
107 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
109 #define _FUNCNAME(m) _citrus_BIG5_##m
110 #define _ENCODING_INFO _BIG5EncodingInfo
111 #define _ENCODING_STATE _BIG5State
112 #define _ENCODING_MB_CUR_MAX(_ei_) 2
113 #define _ENCODING_IS_STATE_DEPENDENT 0
114 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
119 _citrus_BIG5_init_state(_BIG5EncodingInfo * __restrict ei __unused,
120 _BIG5State * __restrict s)
123 memset(s, 0, sizeof(*s));
128 _citrus_BIG5_pack_state(_BIG5EncodingInfo * __restrict ei __unused,
129 void * __restrict pspriv,
130 const _BIG5State * __restrict s)
133 memcpy(pspriv, (const void *)s, sizeof(*s));
138 _citrus_BIG5_unpack_state(_BIG5EncodingInfo * __restrict ei __unused,
139 _BIG5State * __restrict s,
140 const void * __restrict pspriv)
143 memcpy((void *)s, pspriv, sizeof(*s));
147 _citrus_BIG5_check(_BIG5EncodingInfo *ei, unsigned int c)
150 return ((ei->cell[c & 0xFF] & 0x1) ? 2 : 1);
154 _citrus_BIG5_check2(_BIG5EncodingInfo *ei, unsigned int c)
157 return ((ei->cell[c & 0xFF] & 0x2) ? 1 : 0);
161 _citrus_BIG5_check_excludes(_BIG5EncodingInfo *ei, wint_t c)
163 _BIG5Exclude *exclude;
165 TAILQ_FOREACH(exclude, &ei->excludes, entry) {
166 if (c >= exclude->start && c <= exclude->end)
173 _citrus_BIG5_fill_rowcol(void ** __restrict ctx, const char * __restrict s,
174 uint64_t start, uint64_t end)
176 _BIG5EncodingInfo *ei;
180 if (start > 0xFF || end > 0xFF)
182 ei = (_BIG5EncodingInfo *)ctx;
183 i = strcmp("row", s) ? 1 : 0;
185 for (n = start; n <= end; ++n)
186 ei->cell[n & 0xFF] |= i;
192 _citrus_BIG5_fill_excludes(void ** __restrict ctx,
193 const char * __restrict s __unused, uint64_t start, uint64_t end)
195 _BIG5EncodingInfo *ei;
196 _BIG5Exclude *exclude;
198 if (start > 0xFFFF || end > 0xFFFF)
200 ei = (_BIG5EncodingInfo *)ctx;
201 exclude = TAILQ_LAST(&ei->excludes, _BIG5ExcludeList);
202 if (exclude != NULL && (wint_t)start <= exclude->end)
204 exclude = (void *)malloc(sizeof(*exclude));
207 exclude->start = (wint_t)start;
208 exclude->end = (wint_t)end;
209 TAILQ_INSERT_TAIL(&ei->excludes, exclude, entry);
214 static const _citrus_prop_hint_t root_hints[] = {
215 _CITRUS_PROP_HINT_NUM("row", &_citrus_BIG5_fill_rowcol),
216 _CITRUS_PROP_HINT_NUM("col", &_citrus_BIG5_fill_rowcol),
217 _CITRUS_PROP_HINT_NUM("excludes", &_citrus_BIG5_fill_excludes),
218 _CITRUS_PROP_HINT_END
223 _citrus_BIG5_encoding_module_uninit(_BIG5EncodingInfo *ei)
225 _BIG5Exclude *exclude;
227 while ((exclude = TAILQ_FIRST(&ei->excludes)) != NULL) {
228 TAILQ_REMOVE(&ei->excludes, exclude, entry);
235 _citrus_BIG5_encoding_module_init(_BIG5EncodingInfo * __restrict ei,
236 const void * __restrict var, size_t lenvar)
238 void *ctx = (void *)ei;
242 memset((void *)ei, 0, sizeof(*ei));
243 TAILQ_INIT(&ei->excludes);
245 if (lenvar > 0 && var != NULL) {
246 s = _bcs_skip_ws_len((const char *)var, &lenvar);
247 if (lenvar > 0 && *s != '\0') {
248 err = _citrus_prop_parse_variable(
249 root_hints, (void *)ei, s, lenvar);
253 _citrus_BIG5_encoding_module_uninit(ei);
254 memset((void *)ei, 0, sizeof(*ei));
255 TAILQ_INIT(&ei->excludes);
259 /* fallback Big5-1984, for backward compatibility. */
260 _citrus_BIG5_fill_rowcol((void **)&ctx, "row", 0xA1, 0xFE);
261 _citrus_BIG5_fill_rowcol((void **)&ctx, "col", 0x40, 0x7E);
262 _citrus_BIG5_fill_rowcol((void **)&ctx, "col", 0xA1, 0xFE);
269 _citrus_BIG5_mbrtowc_priv(_BIG5EncodingInfo * __restrict ei,
270 wchar_t * __restrict pwc,
271 const char ** __restrict s, size_t n,
272 _BIG5State * __restrict psenc,
273 size_t * __restrict nresult)
282 _citrus_BIG5_init_state(ei, psenc);
287 chlenbak = psenc->chlen;
289 /* make sure we have the first byte in the buffer */
290 switch (psenc->chlen) {
294 psenc->ch[0] = *s0++;
305 c = _citrus_BIG5_check(ei, psenc->ch[0] & 0xff);
308 while (psenc->chlen < c) {
312 psenc->ch[psenc->chlen] = *s0++;
319 wchar = psenc->ch[0] & 0xff;
322 if (!_citrus_BIG5_check2(ei, psenc->ch[1] & 0xff))
324 wchar = ((psenc->ch[0] & 0xff) << 8) | (psenc->ch[1] & 0xff);
331 if (_citrus_BIG5_check_excludes(ei, (wint_t)wchar) != 0)
338 *nresult = wchar ? c - chlenbak : 0;
344 *nresult = (size_t)-1;
349 *nresult = (size_t)-2;
355 _citrus_BIG5_wcrtomb_priv(_BIG5EncodingInfo * __restrict ei,
357 size_t n, wchar_t wc, _BIG5State * __restrict psenc __unused,
358 size_t * __restrict nresult)
363 /* check invalid sequence */
365 _citrus_BIG5_check_excludes(ei, (wint_t)wc) != 0) {
371 if (_citrus_BIG5_check(ei, (wc >> 8) & 0xff) != 2 ||
372 !_citrus_BIG5_check2(ei, wc & 0xff)) {
378 if (wc & ~0xff || !_citrus_BIG5_check(ei, wc & 0xff)) {
386 /* bound check failure */
392 s[0] = (wc >> 8) & 0xff;
402 *nresult = (size_t)-1;
408 _citrus_BIG5_stdenc_wctocs(_BIG5EncodingInfo * __restrict ei __unused,
409 _csid_t * __restrict csid,
410 _index_t * __restrict idx, wchar_t wc)
413 *csid = (wc < 0x100) ? 0 : 1;
421 _citrus_BIG5_stdenc_cstowc(_BIG5EncodingInfo * __restrict ei __unused,
422 wchar_t * __restrict wc,
423 _csid_t csid, _index_t idx)
440 _citrus_BIG5_stdenc_get_state_desc_generic(_BIG5EncodingInfo * __restrict ei __unused,
441 _BIG5State * __restrict psenc,
442 int * __restrict rstate)
445 *rstate = (psenc->chlen == 0) ? _STDENC_SDGEN_INITIAL :
446 _STDENC_SDGEN_INCOMPLETE_CHAR;
450 /* ----------------------------------------------------------------------
451 * public interface for stdenc
454 _CITRUS_STDENC_DECLS(BIG5);
455 _CITRUS_STDENC_DEF_OPS(BIG5);
457 #include "citrus_stdenc_template.h"