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
31 * SPDX-License-Identifier: BSD-3-Clause
34 * The Regents of the University of California. All rights reserved.
36 * This code is derived from software contributed to Berkeley by
37 * Paul Borman at Krystal Technologies.
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
42 * 1. Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * 2. Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in the
46 * documentation and/or other materials provided with the distribution.
47 * 3. Neither the name of the University nor the names of its contributors
48 * may be used to endorse or promote products derived from this software
49 * without specific prior written permission.
51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64 #include <sys/cdefs.h>
65 #include <sys/queue.h>
66 #include <sys/types.h>
78 #include "citrus_namespace.h"
79 #include "citrus_prop.h"
80 #include "citrus_types.h"
81 #include "citrus_bcs.h"
82 #include "citrus_module.h"
83 #include "citrus_stdenc.h"
84 #include "citrus_big5.h"
86 /* ----------------------------------------------------------------------
87 * private stuffs used by templates
95 typedef struct _BIG5Exclude {
96 TAILQ_ENTRY(_BIG5Exclude) entry;
101 typedef TAILQ_HEAD(_BIG5ExcludeList, _BIG5Exclude) _BIG5ExcludeList;
104 _BIG5ExcludeList excludes;
108 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
109 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
111 #define _FUNCNAME(m) _citrus_BIG5_##m
112 #define _ENCODING_INFO _BIG5EncodingInfo
113 #define _ENCODING_STATE _BIG5State
114 #define _ENCODING_MB_CUR_MAX(_ei_) 2
115 #define _ENCODING_IS_STATE_DEPENDENT 0
116 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
121 _citrus_BIG5_init_state(_BIG5EncodingInfo * __restrict ei __unused,
122 _BIG5State * __restrict s)
125 memset(s, 0, sizeof(*s));
131 _citrus_BIG5_pack_state(_BIG5EncodingInfo * __restrict ei __unused,
132 void * __restrict pspriv,
133 const _BIG5State * __restrict s)
136 memcpy(pspriv, (const void *)s, sizeof(*s));
141 _citrus_BIG5_unpack_state(_BIG5EncodingInfo * __restrict ei __unused,
142 _BIG5State * __restrict s,
143 const void * __restrict pspriv)
146 memcpy((void *)s, pspriv, sizeof(*s));
151 _citrus_BIG5_check(_BIG5EncodingInfo *ei, unsigned int c)
154 return ((ei->cell[c & 0xFF] & 0x1) ? 2 : 1);
158 _citrus_BIG5_check2(_BIG5EncodingInfo *ei, unsigned int c)
161 return ((ei->cell[c & 0xFF] & 0x2) ? 1 : 0);
165 _citrus_BIG5_check_excludes(_BIG5EncodingInfo *ei, wint_t c)
167 _BIG5Exclude *exclude;
169 TAILQ_FOREACH(exclude, &ei->excludes, entry) {
170 if (c >= exclude->start && c <= exclude->end)
177 _citrus_BIG5_fill_rowcol(void * __restrict ctx, const char * __restrict s,
178 uint64_t start, uint64_t end)
180 _BIG5EncodingInfo *ei;
184 if (start > 0xFF || end > 0xFF)
186 ei = (_BIG5EncodingInfo *)ctx;
187 i = strcmp("row", s) ? 1 : 0;
189 for (n = start; n <= end; ++n)
190 ei->cell[n & 0xFF] |= i;
196 _citrus_BIG5_fill_excludes(void * __restrict ctx,
197 const char * __restrict s __unused, uint64_t start, uint64_t end)
199 _BIG5EncodingInfo *ei;
200 _BIG5Exclude *exclude;
202 if (start > 0xFFFF || end > 0xFFFF)
204 ei = (_BIG5EncodingInfo *)ctx;
205 exclude = TAILQ_LAST(&ei->excludes, _BIG5ExcludeList);
206 if (exclude != NULL && (wint_t)start <= exclude->end)
208 exclude = (void *)malloc(sizeof(*exclude));
211 exclude->start = (wint_t)start;
212 exclude->end = (wint_t)end;
213 TAILQ_INSERT_TAIL(&ei->excludes, exclude, entry);
218 static const _citrus_prop_hint_t root_hints[] = {
219 _CITRUS_PROP_HINT_NUM("row", &_citrus_BIG5_fill_rowcol),
220 _CITRUS_PROP_HINT_NUM("col", &_citrus_BIG5_fill_rowcol),
221 _CITRUS_PROP_HINT_NUM("excludes", &_citrus_BIG5_fill_excludes),
222 _CITRUS_PROP_HINT_END
227 _citrus_BIG5_encoding_module_uninit(_BIG5EncodingInfo *ei)
229 _BIG5Exclude *exclude;
231 while ((exclude = TAILQ_FIRST(&ei->excludes)) != NULL) {
232 TAILQ_REMOVE(&ei->excludes, exclude, entry);
239 _citrus_BIG5_encoding_module_init(_BIG5EncodingInfo * __restrict ei,
240 const void * __restrict var, size_t lenvar)
245 memset((void *)ei, 0, sizeof(*ei));
246 TAILQ_INIT(&ei->excludes);
248 if (lenvar > 0 && var != NULL) {
249 s = _bcs_skip_ws_len((const char *)var, &lenvar);
250 if (lenvar > 0 && *s != '\0') {
251 err = _citrus_prop_parse_variable(
252 root_hints, (void *)ei, s, lenvar);
256 _citrus_BIG5_encoding_module_uninit(ei);
257 memset((void *)ei, 0, sizeof(*ei));
258 TAILQ_INIT(&ei->excludes);
262 /* fallback Big5-1984, for backward compatibility. */
263 _citrus_BIG5_fill_rowcol(ei, "row", 0xA1, 0xFE);
264 _citrus_BIG5_fill_rowcol(ei, "col", 0x40, 0x7E);
265 _citrus_BIG5_fill_rowcol(ei, "col", 0xA1, 0xFE);
272 _citrus_BIG5_mbrtowc_priv(_BIG5EncodingInfo * __restrict ei,
273 wchar_t * __restrict pwc,
274 char ** __restrict s, size_t n,
275 _BIG5State * __restrict psenc,
276 size_t * __restrict nresult)
285 _citrus_BIG5_init_state(ei, psenc);
290 chlenbak = psenc->chlen;
292 /* make sure we have the first byte in the buffer */
293 switch (psenc->chlen) {
297 psenc->ch[0] = *s0++;
308 c = _citrus_BIG5_check(ei, psenc->ch[0] & 0xff);
311 while (psenc->chlen < c) {
315 psenc->ch[psenc->chlen] = *s0++;
322 wchar = psenc->ch[0] & 0xff;
325 if (!_citrus_BIG5_check2(ei, psenc->ch[1] & 0xff))
327 wchar = ((psenc->ch[0] & 0xff) << 8) | (psenc->ch[1] & 0xff);
334 if (_citrus_BIG5_check_excludes(ei, (wint_t)wchar) != 0)
341 *nresult = wchar ? c - chlenbak : 0;
347 *nresult = (size_t)-1;
352 *nresult = (size_t)-2;
358 _citrus_BIG5_wcrtomb_priv(_BIG5EncodingInfo * __restrict ei,
360 size_t n, wchar_t wc, _BIG5State * __restrict psenc __unused,
361 size_t * __restrict nresult)
366 /* check invalid sequence */
368 _citrus_BIG5_check_excludes(ei, (wint_t)wc) != 0) {
374 if (_citrus_BIG5_check(ei, (wc >> 8) & 0xff) != 2 ||
375 !_citrus_BIG5_check2(ei, wc & 0xff)) {
381 if (wc & ~0xff || !_citrus_BIG5_check(ei, wc & 0xff)) {
389 /* bound check failure */
395 s[0] = (wc >> 8) & 0xff;
405 *nresult = (size_t)-1;
411 _citrus_BIG5_stdenc_wctocs(_BIG5EncodingInfo * __restrict ei __unused,
412 _csid_t * __restrict csid,
413 _index_t * __restrict idx, wchar_t wc)
416 *csid = (wc < 0x100) ? 0 : 1;
424 _citrus_BIG5_stdenc_cstowc(_BIG5EncodingInfo * __restrict ei __unused,
425 wchar_t * __restrict wc,
426 _csid_t csid, _index_t idx)
443 _citrus_BIG5_stdenc_get_state_desc_generic(_BIG5EncodingInfo * __restrict ei __unused,
444 _BIG5State * __restrict psenc,
445 int * __restrict rstate)
448 *rstate = (psenc->chlen == 0) ? _STDENC_SDGEN_INITIAL :
449 _STDENC_SDGEN_INCOMPLETE_CHAR;
453 /* ----------------------------------------------------------------------
454 * public interface for stdenc
457 _CITRUS_STDENC_DECLS(BIG5);
458 _CITRUS_STDENC_DEF_OPS(BIG5);
460 #include "citrus_stdenc_template.h"