2 /* $NetBSD: citrus_big5.c,v 1.13 2011/05/23 14:53:46 joerg 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));
129 _citrus_BIG5_pack_state(_BIG5EncodingInfo * __restrict ei __unused,
130 void * __restrict pspriv,
131 const _BIG5State * __restrict s)
134 memcpy(pspriv, (const void *)s, sizeof(*s));
139 _citrus_BIG5_unpack_state(_BIG5EncodingInfo * __restrict ei __unused,
140 _BIG5State * __restrict s,
141 const void * __restrict pspriv)
144 memcpy((void *)s, pspriv, sizeof(*s));
149 _citrus_BIG5_check(_BIG5EncodingInfo *ei, unsigned int c)
152 return ((ei->cell[c & 0xFF] & 0x1) ? 2 : 1);
156 _citrus_BIG5_check2(_BIG5EncodingInfo *ei, unsigned int c)
159 return ((ei->cell[c & 0xFF] & 0x2) ? 1 : 0);
163 _citrus_BIG5_check_excludes(_BIG5EncodingInfo *ei, wint_t c)
165 _BIG5Exclude *exclude;
167 TAILQ_FOREACH(exclude, &ei->excludes, entry) {
168 if (c >= exclude->start && c <= exclude->end)
175 _citrus_BIG5_fill_rowcol(void * __restrict ctx, const char * __restrict s,
176 uint64_t start, uint64_t end)
178 _BIG5EncodingInfo *ei;
182 if (start > 0xFF || end > 0xFF)
184 ei = (_BIG5EncodingInfo *)ctx;
185 i = strcmp("row", s) ? 1 : 0;
187 for (n = start; n <= end; ++n)
188 ei->cell[n & 0xFF] |= i;
194 _citrus_BIG5_fill_excludes(void * __restrict ctx,
195 const char * __restrict s __unused, uint64_t start, uint64_t end)
197 _BIG5EncodingInfo *ei;
198 _BIG5Exclude *exclude;
200 if (start > 0xFFFF || end > 0xFFFF)
202 ei = (_BIG5EncodingInfo *)ctx;
203 exclude = TAILQ_LAST(&ei->excludes, _BIG5ExcludeList);
204 if (exclude != NULL && (wint_t)start <= exclude->end)
206 exclude = (void *)malloc(sizeof(*exclude));
209 exclude->start = (wint_t)start;
210 exclude->end = (wint_t)end;
211 TAILQ_INSERT_TAIL(&ei->excludes, exclude, entry);
216 static const _citrus_prop_hint_t root_hints[] = {
217 _CITRUS_PROP_HINT_NUM("row", &_citrus_BIG5_fill_rowcol),
218 _CITRUS_PROP_HINT_NUM("col", &_citrus_BIG5_fill_rowcol),
219 _CITRUS_PROP_HINT_NUM("excludes", &_citrus_BIG5_fill_excludes),
220 _CITRUS_PROP_HINT_END
225 _citrus_BIG5_encoding_module_uninit(_BIG5EncodingInfo *ei)
227 _BIG5Exclude *exclude;
229 while ((exclude = TAILQ_FIRST(&ei->excludes)) != NULL) {
230 TAILQ_REMOVE(&ei->excludes, exclude, entry);
237 _citrus_BIG5_encoding_module_init(_BIG5EncodingInfo * __restrict ei,
238 const void * __restrict var, size_t lenvar)
243 memset((void *)ei, 0, sizeof(*ei));
244 TAILQ_INIT(&ei->excludes);
246 if (lenvar > 0 && var != NULL) {
247 s = _bcs_skip_ws_len((const char *)var, &lenvar);
248 if (lenvar > 0 && *s != '\0') {
249 err = _citrus_prop_parse_variable(
250 root_hints, (void *)ei, s, lenvar);
254 _citrus_BIG5_encoding_module_uninit(ei);
255 memset((void *)ei, 0, sizeof(*ei));
256 TAILQ_INIT(&ei->excludes);
260 /* fallback Big5-1984, for backward compatibility. */
261 _citrus_BIG5_fill_rowcol(ei, "row", 0xA1, 0xFE);
262 _citrus_BIG5_fill_rowcol(ei, "col", 0x40, 0x7E);
263 _citrus_BIG5_fill_rowcol(ei, "col", 0xA1, 0xFE);
270 _citrus_BIG5_mbrtowc_priv(_BIG5EncodingInfo * __restrict ei,
271 wchar_t * __restrict pwc,
272 char ** __restrict s, size_t n,
273 _BIG5State * __restrict psenc,
274 size_t * __restrict nresult)
283 _citrus_BIG5_init_state(ei, psenc);
288 chlenbak = psenc->chlen;
290 /* make sure we have the first byte in the buffer */
291 switch (psenc->chlen) {
295 psenc->ch[0] = *s0++;
306 c = _citrus_BIG5_check(ei, psenc->ch[0] & 0xff);
309 while (psenc->chlen < c) {
313 psenc->ch[psenc->chlen] = *s0++;
320 wchar = psenc->ch[0] & 0xff;
323 if (!_citrus_BIG5_check2(ei, psenc->ch[1] & 0xff))
325 wchar = ((psenc->ch[0] & 0xff) << 8) | (psenc->ch[1] & 0xff);
332 if (_citrus_BIG5_check_excludes(ei, (wint_t)wchar) != 0)
339 *nresult = wchar ? c - chlenbak : 0;
345 *nresult = (size_t)-1;
350 *nresult = (size_t)-2;
356 _citrus_BIG5_wcrtomb_priv(_BIG5EncodingInfo * __restrict ei,
358 size_t n, wchar_t wc, _BIG5State * __restrict psenc __unused,
359 size_t * __restrict nresult)
364 /* check invalid sequence */
366 _citrus_BIG5_check_excludes(ei, (wint_t)wc) != 0) {
372 if (_citrus_BIG5_check(ei, (wc >> 8) & 0xff) != 2 ||
373 !_citrus_BIG5_check2(ei, wc & 0xff)) {
379 if (wc & ~0xff || !_citrus_BIG5_check(ei, wc & 0xff)) {
387 /* bound check failure */
393 s[0] = (wc >> 8) & 0xff;
403 *nresult = (size_t)-1;
409 _citrus_BIG5_stdenc_wctocs(_BIG5EncodingInfo * __restrict ei __unused,
410 _csid_t * __restrict csid,
411 _index_t * __restrict idx, wchar_t wc)
414 *csid = (wc < 0x100) ? 0 : 1;
422 _citrus_BIG5_stdenc_cstowc(_BIG5EncodingInfo * __restrict ei __unused,
423 wchar_t * __restrict wc,
424 _csid_t csid, _index_t idx)
441 _citrus_BIG5_stdenc_get_state_desc_generic(_BIG5EncodingInfo * __restrict ei __unused,
442 _BIG5State * __restrict psenc,
443 int * __restrict rstate)
446 *rstate = (psenc->chlen == 0) ? _STDENC_SDGEN_INITIAL :
447 _STDENC_SDGEN_INCOMPLETE_CHAR;
451 /* ----------------------------------------------------------------------
452 * public interface for stdenc
455 _CITRUS_STDENC_DECLS(BIG5);
456 _CITRUS_STDENC_DEF_OPS(BIG5);
458 #include "citrus_stdenc_template.h"