2 /* $NetBSD: citrus_gbk2k.c,v 1.7 2008/06/14 16:01:07 tnozaki Exp $ */
5 * SPDX-License-Identifier: BSD-2-Clause
7 * Copyright (c)2003 Citrus Project,
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/cdefs.h>
33 #include <sys/types.h>
45 #include "citrus_namespace.h"
46 #include "citrus_types.h"
47 #include "citrus_bcs.h"
48 #include "citrus_module.h"
49 #include "citrus_stdenc.h"
50 #include "citrus_gbk2k.h"
53 /* ----------------------------------------------------------------------
54 * private stuffs used by templates
57 typedef struct _GBK2KState {
66 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
67 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
69 #define _FUNCNAME(m) _citrus_GBK2K_##m
70 #define _ENCODING_INFO _GBK2KEncodingInfo
71 #define _ENCODING_STATE _GBK2KState
72 #define _ENCODING_MB_CUR_MAX(_ei_) (_ei_)->mb_cur_max
73 #define _ENCODING_IS_STATE_DEPENDENT 0
74 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
78 _citrus_GBK2K_init_state(_GBK2KEncodingInfo * __restrict ei __unused,
79 _GBK2KState * __restrict s)
82 memset(s, 0, sizeof(*s));
88 _citrus_GBK2K_pack_state(_GBK2KEncodingInfo * __restrict ei __unused,
89 void * __restrict pspriv, const _GBK2KState * __restrict s)
92 memcpy(pspriv, (const void *)s, sizeof(*s));
97 _citrus_GBK2K_unpack_state(_GBK2KEncodingInfo * __restrict ei __unused,
98 _GBK2KState * __restrict s, const void * __restrict pspriv)
101 memcpy((void *)s, pspriv, sizeof(*s));
106 _mb_singlebyte(int c)
109 return ((c & 0xff) <= 0x7f);
117 return (0x81 <= c && c <= 0xfe);
125 return ((0x40 <= c && c <= 0x7e) || (0x80 <= c && c <= 0xfe));
133 return (0x30 <= c && c <= 0x39);
141 c = (uint32_t)v; /* XXX */
142 if (!(c & 0xffffff00))
144 if (!(c & 0xffff0000))
149 #define _PSENC (psenc->ch[psenc->chlen - 1])
150 #define _PUSH_PSENC(c) (psenc->ch[psenc->chlen++] = (c))
153 _citrus_GBK2K_mbrtowc_priv(_GBK2KEncodingInfo * __restrict ei,
154 wchar_t * __restrict pwc, char ** __restrict s, size_t n,
155 _GBK2KState * __restrict psenc, size_t * __restrict nresult)
164 /* _citrus_GBK2K_init_state(ei, psenc); */
170 chlenbak = psenc->chlen;
172 switch (psenc->chlen) {
174 if (!_mb_leadbyte (_PSENC))
178 if (!_mb_surrogate(_PSENC) || _mb_trailbyte(_PSENC))
182 if (!_mb_leadbyte (_PSENC))
197 switch (psenc->chlen) {
199 if (_mb_singlebyte(_PSENC))
201 if (_mb_leadbyte (_PSENC))
205 if (_mb_trailbyte (_PSENC))
207 if (ei->mb_cur_max == 4 &&
208 _mb_surrogate (_PSENC))
212 if (_mb_leadbyte (_PSENC))
216 if (_mb_surrogate (_PSENC))
227 wc = (wc << 8) | (*s1++ & 0xff);
232 *nresult = (wc == 0) ? 0 : psenc->chlen - chlenbak;
233 /* _citrus_GBK2K_init_state(ei, psenc); */
240 *nresult = (size_t)-2;
248 *nresult = (size_t)-1;
253 _citrus_GBK2K_wcrtomb_priv(_GBK2KEncodingInfo * __restrict ei,
254 char * __restrict s, size_t n, wchar_t wc, _GBK2KState * __restrict psenc,
255 size_t * __restrict nresult)
260 if (psenc->chlen != 0) {
273 if (!_mb_singlebyte(_PUSH_PSENC(wc ))) {
279 if (!_mb_leadbyte (_PUSH_PSENC(wc >> 8)) ||
280 !_mb_trailbyte (_PUSH_PSENC(wc))) {
286 if (ei->mb_cur_max != 4 ||
287 !_mb_leadbyte (_PUSH_PSENC(wc >> 24)) ||
288 !_mb_surrogate (_PUSH_PSENC(wc >> 16)) ||
289 !_mb_leadbyte (_PUSH_PSENC(wc >> 8)) ||
290 !_mb_surrogate (_PUSH_PSENC(wc))) {
297 memcpy(s, psenc->ch, psenc->chlen);
298 *nresult = psenc->chlen;
299 /* _citrus_GBK2K_init_state(ei, psenc); */
305 *nresult = (size_t)-1;
311 _citrus_GBK2K_stdenc_wctocs(_GBK2KEncodingInfo * __restrict ei __unused,
312 _csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
316 if ((uint32_t)wc < 0x80) {
320 } else if ((uint32_t)wc >= 0x10000) {
325 ch = (uint8_t)(wc >> 8);
327 if (ch >= 0xA1 && cl >= 0xA1) {
330 *idx = (_index_t)wc & 0x7F7FU;
332 /* extended area (0x8140-) */
343 _citrus_GBK2K_stdenc_cstowc(_GBK2KEncodingInfo * __restrict ei,
344 wchar_t * __restrict wc, _csid_t csid, _index_t idx)
354 *wc = (wchar_t)idx | 0x8080U;
362 if (ei->mb_cur_max != 4)
375 _citrus_GBK2K_stdenc_get_state_desc_generic(_GBK2KEncodingInfo * __restrict ei __unused,
376 _GBK2KState * __restrict psenc, int * __restrict rstate)
379 *rstate = (psenc->chlen == 0) ? _STDENC_SDGEN_INITIAL :
380 _STDENC_SDGEN_INCOMPLETE_CHAR;
386 _citrus_GBK2K_encoding_module_init(_GBK2KEncodingInfo * __restrict ei,
387 const void * __restrict var, size_t lenvar)
392 memset((void *)ei, 0, sizeof(*ei));
395 switch (_bcs_tolower(*p)) {
397 MATCH("2byte", ei->mb_cur_max = 2);
409 _citrus_GBK2K_encoding_module_uninit(_GBK2KEncodingInfo *ei __unused)
414 /* ----------------------------------------------------------------------
415 * public interface for stdenc
418 _CITRUS_STDENC_DECLS(GBK2K);
419 _CITRUS_STDENC_DEF_OPS(GBK2K);
421 #include "citrus_stdenc_template.h"