2 /* $NetBSD: citrus_gbk2k.c,v 1.7 2008/06/14 16:01:07 tnozaki 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/cdefs.h>
31 #include <sys/types.h>
43 #include "citrus_namespace.h"
44 #include "citrus_types.h"
45 #include "citrus_bcs.h"
46 #include "citrus_module.h"
47 #include "citrus_stdenc.h"
48 #include "citrus_gbk2k.h"
51 /* ----------------------------------------------------------------------
52 * private stuffs used by templates
55 typedef struct _GBK2KState {
64 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
65 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
67 #define _FUNCNAME(m) _citrus_GBK2K_##m
68 #define _ENCODING_INFO _GBK2KEncodingInfo
69 #define _ENCODING_STATE _GBK2KState
70 #define _ENCODING_MB_CUR_MAX(_ei_) (_ei_)->mb_cur_max
71 #define _ENCODING_IS_STATE_DEPENDENT 0
72 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
76 _citrus_GBK2K_init_state(_GBK2KEncodingInfo * __restrict ei __unused,
77 _GBK2KState * __restrict s)
80 memset(s, 0, sizeof(*s));
85 _citrus_GBK2K_pack_state(_GBK2KEncodingInfo * __restrict ei __unused,
86 void * __restrict pspriv, const _GBK2KState * __restrict s)
89 memcpy(pspriv, (const void *)s, sizeof(*s));
94 _citrus_GBK2K_unpack_state(_GBK2KEncodingInfo * __restrict ei __unused,
95 _GBK2KState * __restrict s, const void * __restrict pspriv)
98 memcpy((void *)s, pspriv, sizeof(*s));
102 _mb_singlebyte(int c)
105 return ((c & 0xff) <= 0x7f);
113 return (0x81 <= c && c <= 0xfe);
121 return ((0x40 <= c && c <= 0x7e) || (0x80 <= c && c <= 0xfe));
129 return (0x30 <= c && c <= 0x39);
137 c = (uint32_t)v; /* XXX */
138 if (!(c & 0xffffff00))
140 if (!(c & 0xffff0000))
145 #define _PSENC (psenc->ch[psenc->chlen - 1])
146 #define _PUSH_PSENC(c) (psenc->ch[psenc->chlen++] = (c))
149 _citrus_GBK2K_mbrtowc_priv(_GBK2KEncodingInfo * __restrict ei,
150 wchar_t * __restrict pwc, const char ** __restrict s, size_t n,
151 _GBK2KState * __restrict psenc, size_t * __restrict nresult)
160 /* _citrus_GBK2K_init_state(ei, psenc); */
166 chlenbak = psenc->chlen;
168 switch (psenc->chlen) {
170 if (!_mb_leadbyte (_PSENC))
174 if (!_mb_surrogate(_PSENC) || _mb_trailbyte(_PSENC))
178 if (!_mb_leadbyte (_PSENC))
193 switch (psenc->chlen) {
195 if (_mb_singlebyte(_PSENC))
197 if (_mb_leadbyte (_PSENC))
201 if (_mb_trailbyte (_PSENC))
203 if (ei->mb_cur_max == 4 &&
204 _mb_surrogate (_PSENC))
208 if (_mb_leadbyte (_PSENC))
212 if (_mb_surrogate (_PSENC))
223 wc = (wc << 8) | (*s1++ & 0xff);
228 *nresult = (wc == 0) ? 0 : psenc->chlen - chlenbak;
229 /* _citrus_GBK2K_init_state(ei, psenc); */
236 *nresult = (size_t)-2;
244 *nresult = (size_t)-1;
249 _citrus_GBK2K_wcrtomb_priv(_GBK2KEncodingInfo * __restrict ei,
250 char * __restrict s, size_t n, wchar_t wc, _GBK2KState * __restrict psenc,
251 size_t * __restrict nresult)
256 if (psenc->chlen != 0) {
269 if (!_mb_singlebyte(_PUSH_PSENC(wc ))) {
275 if (!_mb_leadbyte (_PUSH_PSENC(wc >> 8)) ||
276 !_mb_trailbyte (_PUSH_PSENC(wc))) {
282 if (ei->mb_cur_max != 4 ||
283 !_mb_leadbyte (_PUSH_PSENC(wc >> 24)) ||
284 !_mb_surrogate (_PUSH_PSENC(wc >> 16)) ||
285 !_mb_leadbyte (_PUSH_PSENC(wc >> 8)) ||
286 !_mb_surrogate (_PUSH_PSENC(wc))) {
293 memcpy(s, psenc->ch, psenc->chlen);
294 *nresult = psenc->chlen;
295 /* _citrus_GBK2K_init_state(ei, psenc); */
301 *nresult = (size_t)-1;
307 _citrus_GBK2K_stdenc_wctocs(_GBK2KEncodingInfo * __restrict ei __unused,
308 _csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
312 if ((uint32_t)wc < 0x80) {
316 } else if ((uint32_t)wc >= 0x10000) {
321 ch = (uint8_t)(wc >> 8);
323 if (ch >= 0xA1 && cl >= 0xA1) {
326 *idx = (_index_t)wc & 0x7F7FU;
328 /* extended area (0x8140-) */
339 _citrus_GBK2K_stdenc_cstowc(_GBK2KEncodingInfo * __restrict ei,
340 wchar_t * __restrict wc, _csid_t csid, _index_t idx)
350 *wc = (wchar_t)idx | 0x8080U;
358 if (ei->mb_cur_max != 4)
371 _citrus_GBK2K_stdenc_get_state_desc_generic(_GBK2KEncodingInfo * __restrict ei __unused,
372 _GBK2KState * __restrict psenc, int * __restrict rstate)
375 *rstate = (psenc->chlen == 0) ? _STDENC_SDGEN_INITIAL :
376 _STDENC_SDGEN_INCOMPLETE_CHAR;
382 _citrus_GBK2K_encoding_module_init(_GBK2KEncodingInfo * __restrict ei,
383 const void * __restrict var, size_t lenvar)
388 memset((void *)ei, 0, sizeof(*ei));
391 switch (_bcs_tolower(*p)) {
393 MATCH("2byte", ei->mb_cur_max = 2);
405 _citrus_GBK2K_encoding_module_uninit(_GBK2KEncodingInfo *ei __unused)
410 /* ----------------------------------------------------------------------
411 * public interface for stdenc
414 _CITRUS_STDENC_DECLS(GBK2K);
415 _CITRUS_STDENC_DEF_OPS(GBK2K);
417 #include "citrus_stdenc_template.h"