1 /* $NetBSD: src/lib/libc/citrus/modules/citrus_gbk2k.c,v 1.4 2003/06/26 12:09:57 tshiozak Exp $ */
2 /* $DragonFly: src/lib/libc/citrus/modules/citrus_gbk2k.c,v 1.1 2005/03/11 23:33:53 joerg Exp $ */
5 * Copyright (c)2003 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>
41 #include "citrus_namespace.h"
42 #include "citrus_types.h"
43 #include "citrus_bcs.h"
44 #include "citrus_module.h"
45 #include "citrus_ctype.h"
46 #include "citrus_stdenc.h"
47 #include "citrus_gbk2k.h"
50 /* ----------------------------------------------------------------------
51 * private stuffs used by templates
54 typedef struct _GBK2KState {
62 #define _MODE_2BYTE 0x0001
65 _GBK2KEncodingInfo ei;
67 /* for future multi-locale facility */
70 _GBK2KState s_mbrtowc;
72 _GBK2KState s_mbsrtowcs;
73 _GBK2KState s_wcrtomb;
74 _GBK2KState s_wcsrtombs;
79 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
80 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
82 #define _FUNCNAME(m) _citrus_GBK2K_##m
83 #define _ENCODING_INFO _GBK2KEncodingInfo
84 #define _CTYPE_INFO _GBK2KCTypeInfo
85 #define _ENCODING_STATE _GBK2KState
86 #define _ENCODING_MB_CUR_MAX(_ei_) 4
87 #define _ENCODING_IS_STATE_DEPENDENT 0
88 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
92 _citrus_GBK2K_init_state(_GBK2KEncodingInfo * __restrict ei,
93 _GBK2KState * __restrict s)
95 memset(s, 0, sizeof(*s));
100 _citrus_GBK2K_pack_state(_GBK2KEncodingInfo * __restrict ei,
101 void * __restrict pspriv,
102 const _GBK2KState * __restrict s)
104 memcpy(pspriv, (const void *)s, sizeof(*s));
109 _citrus_GBK2K_unpack_state(_GBK2KEncodingInfo * __restrict ei,
110 _GBK2KState * __restrict s,
111 const void * __restrict pspriv)
113 memcpy((void *)s, pspriv, sizeof(*s));
117 _mb_singlebyte(int c)
127 return (0x81 <= c && c <= 0xfe);
134 return ((0x40 <= c && c <= 0x7e) || (0x80 <= c && c <= 0xfe));
141 return (0x30 <= c && c <= 0x39);
149 c = (u_int32_t)v; /* XXX */
150 if (!(c & 0xffffff00))
152 if (!(c & 0xffff0000))
157 #define _PSENC (psenc->ch[psenc->chlen - 1])
158 #define _PUSH_PSENC(c) (psenc->ch[psenc->chlen++] = (c))
161 _citrus_GBK2K_mbrtowc_priv(_GBK2KEncodingInfo * __restrict ei,
162 wchar_t * __restrict pwc,
163 const char ** __restrict s, size_t n,
164 _GBK2KState * __restrict psenc,
165 size_t * __restrict nresult)
171 _DIAGASSERT(ei != NULL);
172 /* pwc may be NULL */
173 _DIAGASSERT(s != NULL);
174 _DIAGASSERT(psenc != NULL);
179 /* _citrus_GBK2K_init_state(ei, psenc); */
185 chlenbak = psenc->chlen;
187 switch (psenc->chlen) {
189 if (!_mb_leadbyte (_PSENC))
193 if (!_mb_surrogate(_PSENC) || _mb_trailbyte(_PSENC))
197 if (!_mb_leadbyte (_PSENC))
212 switch (psenc->chlen) {
214 if (_mb_singlebyte(_PSENC))
216 if (_mb_leadbyte (_PSENC))
220 if (_mb_trailbyte (_PSENC))
222 if ((ei->ei_mode & _MODE_2BYTE) == 0 &&
223 _mb_surrogate (_PSENC))
227 if (_mb_leadbyte (_PSENC))
231 if (_mb_surrogate (_PSENC))
242 wc = (wc << 8) | (*s1++ & 0xff);
247 *nresult = (wc == 0) ? 0 : psenc->chlen - chlenbak;
248 /* _citrus_GBK2K_init_state(ei, psenc); */
255 *nresult = (size_t)-2;
263 *nresult = (size_t)-1;
268 _citrus_GBK2K_wcrtomb_priv(_GBK2KEncodingInfo * __restrict ei,
269 char * __restrict s, size_t n, wchar_t wc,
270 _GBK2KState * __restrict psenc,
271 size_t * __restrict nresult)
275 _DIAGASSERT(ei != NULL);
276 _DIAGASSERT(s != NULL);
277 _DIAGASSERT(psenc != NULL);
279 if (psenc->chlen != 0) {
292 if (!_mb_singlebyte(_PUSH_PSENC(wc ))) {
298 if (!_mb_leadbyte (_PUSH_PSENC(wc >> 8)) ||
299 !_mb_trailbyte (_PUSH_PSENC(wc ))) {
305 if ((ei->ei_mode & _MODE_2BYTE) != 0 ||
306 !_mb_leadbyte (_PUSH_PSENC(wc >> 24)) ||
307 !_mb_surrogate (_PUSH_PSENC(wc >> 16)) ||
308 !_mb_leadbyte (_PUSH_PSENC(wc >> 8)) ||
309 !_mb_surrogate (_PUSH_PSENC(wc ))) {
316 _DIAGASSERT(len == psenc->chlen);
318 memcpy(s, psenc->ch, psenc->chlen);
319 *nresult = psenc->chlen;
320 /* _citrus_GBK2K_init_state(ei, psenc); */
326 *nresult = (size_t)-1;
332 _citrus_GBK2K_stdenc_wctocs(_GBK2KEncodingInfo * __restrict ei,
333 _csid_t * __restrict csid,
334 _index_t * __restrict idx, wchar_t wc)
338 _DIAGASSERT(csid != NULL && idx != NULL);
340 if ((u_int32_t)wc<0x80) {
344 } else if ((u_int32_t)wc>=0x10000) {
349 ch = (u_int8_t)(wc >> 8);
351 if (ch>=0xA1 && cl>=0xA1) {
354 *idx = (_index_t)wc & 0x7F7FU;
356 /* extended area (0x8140-) */
367 _citrus_GBK2K_stdenc_cstowc(_GBK2KEncodingInfo * __restrict ei,
368 wchar_t * __restrict wc,
369 _csid_t csid, _index_t idx)
372 _DIAGASSERT(wc != NULL);
381 *wc = (wchar_t)idx | 0x8080U;
389 if ((ei->ei_mode & _MODE_2BYTE) != 0)
402 _citrus_GBK2K_encoding_module_init(_GBK2KEncodingInfo * __restrict ei,
403 const void * __restrict var, size_t lenvar)
407 _DIAGASSERT(ei != NULL);
410 #define MATCH(x, act) \
412 if (lenvar >= (sizeof(#x)-1) && \
413 _bcs_strncasecmp(p, #x, sizeof(#x)-1) == 0) { \
415 lenvar -= sizeof(#x)-1; \
418 } while (/*CONSTCOND*/0)
420 switch (_bcs_tolower(*p)) {
422 MATCH("2byte", ei->ei_mode |= _MODE_2BYTE);
429 memset((void *)ei, 0, sizeof(*ei));
435 _citrus_GBK2K_encoding_module_uninit(_GBK2KEncodingInfo *ei)
440 /* ----------------------------------------------------------------------
441 * public interface for ctype
444 _CITRUS_CTYPE_DECLS(GBK2K);
445 _CITRUS_CTYPE_DEF_OPS(GBK2K);
447 #include "citrus_ctype_template.h"
449 /* ----------------------------------------------------------------------
450 * public interface for stdenc
453 _CITRUS_STDENC_DECLS(GBK2K);
454 _CITRUS_STDENC_DEF_OPS(GBK2K);
456 #include "citrus_stdenc_template.h"