1 /* $NetBSD: citrus_dechanyu.c,v 1.2 2007/04/24 15:42:08 tnozaki Exp $ */
2 /* $DragonFly: src/lib/libc/citrus/modules/citrus_dechanyu.c,v 1.1 2008/04/10 10:21:01 hasso Exp $ */
5 * Copyright (c)2007 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
30 #include <sys/types.h>
42 #include "citrus_namespace.h"
43 #include "citrus_types.h"
44 #include "citrus_bcs.h"
45 #include "citrus_module.h"
46 #include "citrus_ctype.h"
47 #include "citrus_stdenc.h"
48 #include "citrus_dechanyu.h"
50 /* ----------------------------------------------------------------------
51 * private stuffs used by templates
61 } _DECHanyuEncodingInfo;
64 _DECHanyuEncodingInfo ei;
66 /* for future multi-locale facility */
67 _DECHanyuState s_mblen;
68 _DECHanyuState s_mbrlen;
69 _DECHanyuState s_mbrtowc;
70 _DECHanyuState s_mbtowc;
71 _DECHanyuState s_mbsrtowcs;
72 _DECHanyuState s_wcrtomb;
73 _DECHanyuState s_wcsrtombs;
74 _DECHanyuState s_wctomb;
78 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
79 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.__CONCAT(s_,_func_)
81 #define _FUNCNAME(m) __CONCAT(_citrus_DECHanyu_,m)
82 #define _ENCODING_INFO _DECHanyuEncodingInfo
83 #define _CTYPE_INFO _DECHanyuCTypeInfo
84 #define _ENCODING_STATE _DECHanyuState
85 #define _ENCODING_MB_CUR_MAX(_ei_) 4
86 #define _ENCODING_IS_STATE_DEPENDENT 0
87 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
91 _citrus_DECHanyu_init_state(_DECHanyuEncodingInfo * __restrict ei,
92 _DECHanyuState * __restrict psenc)
95 _DIAGASSERT(psenc != NULL);
102 _citrus_DECHanyu_pack_state(_DECHanyuEncodingInfo * __restrict ei,
103 void * __restrict pspriv,
104 const _DECHanyuState * __restrict psenc)
107 _DIAGASSERT(pspriv != NULL);
108 _DIAGASSERT(psenc != NULL);
110 memcpy(pspriv, (const void *)psenc, sizeof(*psenc));
115 _citrus_DECHanyu_unpack_state(_DECHanyuEncodingInfo * __restrict ei,
116 _DECHanyuState * __restrict psenc,
117 const void * __restrict pspriv)
120 _DIAGASSERT(psenc != NULL);
121 _DIAGASSERT(pspriv != NULL);
123 memcpy((void *)psenc, pspriv, sizeof(*psenc));
128 _citrus_DECHanyu_encoding_module_uninit(_DECHanyuEncodingInfo *ei)
135 _citrus_DECHanyu_encoding_module_init(_DECHanyuEncodingInfo * __restrict ei,
136 const void * __restrict var, size_t lenvar)
151 return c >= 0xA1 && c <= 0xFE;
158 return c >= 0x21 && c <= 0x7E;
173 #define HANYUBIT 0xC2CB0000
178 return c >= 0x21 && c <= 0x7E;
183 _citrus_DECHanyu_mbrtowc_priv(_DECHanyuEncodingInfo * __restrict ei,
184 wchar_t * __restrict pwc, const char ** __restrict s, size_t n,
185 _DECHanyuState * __restrict psenc, size_t * __restrict nresult)
191 /* ei may be unused */
192 _DIAGASSERT(s != NULL);
193 _DIAGASSERT(psenc != NULL);
194 _DIAGASSERT(nresult != NULL);
197 _citrus_DECHanyu_init_state(ei, psenc);
198 *nresult = _ENCODING_IS_STATE_DEPENDENT;
204 switch (psenc->chlen) {
209 if (is_singlebyte(ch) != 0) {
212 *nresult = (size_t)((ch == 0) ? 0 : 1);
216 if (is_leadbyte(ch) == 0)
218 psenc->ch[psenc->chlen++] = ch;
221 ch = psenc->ch[0] & 0xFF;
222 if (is_leadbyte(ch) == 0)
226 ch = psenc->ch[0] & 0xFF;
227 if (is_hanyu1(ch) != 0) {
228 ch = psenc->ch[1] & 0xFF;
229 if (is_hanyu2(ch) != 0) {
230 wc |= (wchar_t)HANYUBIT;
239 switch (psenc->chlen) {
241 if (is_hanyu1(ch) != 0) {
245 if (is_hanyu2(ch) == 0)
247 psenc->ch[psenc->chlen++] = ch;
248 wc |= (wchar_t)HANYUBIT;
252 if (is_leadbyte(ch) == 0)
254 psenc->ch[psenc->chlen++] = ch;
261 if (is_leadbyte(ch) == 0)
263 psenc->ch[psenc->chlen++] = ch;
266 ch = psenc->ch[2] & 0xFF;
267 if (is_leadbyte(ch) == 0)
272 wc |= (wchar_t)(ch << 8);
274 if (is_trailbyte(ch) == 0)
279 *nresult = (size_t)(s0 - *s);
286 *nresult = (size_t)-2;
291 *nresult = (size_t)-1;
297 _citrus_DECHanyu_wcrtomb_priv(_DECHanyuEncodingInfo * __restrict ei,
298 char * __restrict s, size_t n, wchar_t wc,
299 _DECHanyuState * __restrict psenc, size_t * __restrict nresult)
303 /* ei may be unused */
304 _DIAGASSERT(s != NULL);
305 _DIAGASSERT(psenc != NULL);
306 _DIAGASSERT(nresult != NULL);
308 if (psenc->chlen != 0)
311 /* XXX: assume wchar_t as int */
312 if ((uint32_t)wc <= 0x7F) {
315 if ((uint32_t)wc > 0xFFFF) {
316 if ((wc & ~0xFFFF) != HANYUBIT)
318 psenc->ch[psenc->chlen++] = (wc >> 24) & 0xFF;
319 psenc->ch[psenc->chlen++] = (wc >> 16) & 0xFF;
322 ch = (wc >> 8) & 0xFF;
323 if (!is_leadbyte(ch))
325 psenc->ch[psenc->chlen++] = ch;
327 if (is_trailbyte(ch) == 0)
330 psenc->ch[psenc->chlen++] = ch;
331 if (n < psenc->chlen) {
332 *nresult = (size_t)-1;
335 memcpy(s, psenc->ch, psenc->chlen);
336 *nresult = psenc->chlen;
342 *nresult = (size_t)-1;
348 _citrus_DECHanyu_stdenc_wctocs(_DECHanyuEncodingInfo * __restrict ei,
349 _csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
354 /* ei may be unused */
355 _DIAGASSERT(csid != NULL);
356 _DIAGASSERT(idx != NULL);
360 /* XXX: assume wchar_t as int */
361 if ((uint32_t)wc > 0x7F) {
362 if ((uint32_t)wc > 0xFFFF) {
363 if ((wc & ~0xFFFF) != HANYUBIT)
367 if (is_leadbyte((wc >> 8) & 0xFF) == 0 ||
368 is_trailbyte(wc & 0xFF) == 0)
370 plane += (wc & 0x80) ? 1 : 2;
374 *idx = (_index_t)(wc & mask);
381 _citrus_DECHanyu_stdenc_cstowc(_DECHanyuEncodingInfo * __restrict ei,
382 wchar_t * __restrict wc, _csid_t csid, _index_t idx)
384 /* ei may be unused */
385 _DIAGASSERT(wc != NULL);
390 } else if (csid <= 4) {
391 if (is_94charset(idx >> 8) == 0)
393 if (is_94charset(idx & 0xFF) == 0)
408 _citrus_DECHanyu_stdenc_get_state_desc_generic(
409 _DECHanyuEncodingInfo * __restrict ei,
410 _DECHanyuState * __restrict psenc, int * __restrict rstate)
412 /* ei may be unused */
413 _DIAGASSERT(psenc != NULL);
414 _DIAGASSERT(rstate != NULL);
416 *rstate = (psenc->chlen == 0)
417 ? _STDENC_SDGEN_INITIAL
418 : _STDENC_SDGEN_INCOMPLETE_CHAR;
422 /* ----------------------------------------------------------------------
423 * public interface for ctype
426 _CITRUS_CTYPE_DECLS(DECHanyu);
427 _CITRUS_CTYPE_DEF_OPS(DECHanyu);
429 #include "citrus_ctype_template.h"
432 /* ----------------------------------------------------------------------
433 * public interface for stdenc
436 _CITRUS_STDENC_DECLS(DECHanyu);
437 _CITRUS_STDENC_DEF_OPS(DECHanyu);
439 #include "citrus_stdenc_template.h"