1 /* $FreeBSD: head/lib/libiconv_modules/GBK2K/citrus_gbk2k.c 281550 2015-04-15 09:09:20Z tijl $ */
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
));
86 _citrus_GBK2K_pack_state(_GBK2KEncodingInfo
* __restrict ei __unused
,
87 void * __restrict pspriv
, const _GBK2KState
* __restrict s
)
90 memcpy(pspriv
, (const void *)s
, sizeof(*s
));
95 _citrus_GBK2K_unpack_state(_GBK2KEncodingInfo
* __restrict ei __unused
,
96 _GBK2KState
* __restrict s
, const void * __restrict pspriv
)
99 memcpy((void *)s
, pspriv
, sizeof(*s
));
104 _mb_singlebyte(int c
)
107 return ((c
& 0xff) <= 0x7f);
115 return (0x81 <= c
&& c
<= 0xfe);
123 return ((0x40 <= c
&& c
<= 0x7e) || (0x80 <= c
&& c
<= 0xfe));
131 return (0x30 <= c
&& c
<= 0x39);
139 c
= (uint32_t)v
; /* XXX */
140 if (!(c
& 0xffffff00))
142 if (!(c
& 0xffff0000))
147 #define _PSENC (psenc->ch[psenc->chlen - 1])
148 #define _PUSH_PSENC(c) (psenc->ch[psenc->chlen++] = (c))
151 _citrus_GBK2K_mbrtowc_priv(_GBK2KEncodingInfo
* __restrict ei
,
152 wchar_t * __restrict pwc
, char ** __restrict s
, size_t n
,
153 _GBK2KState
* __restrict psenc
, size_t * __restrict nresult
)
162 /* _citrus_GBK2K_init_state(ei, psenc); */
168 chlenbak
= psenc
->chlen
;
170 switch (psenc
->chlen
) {
172 if (!_mb_leadbyte (_PSENC
))
176 if (!_mb_surrogate(_PSENC
) || _mb_trailbyte(_PSENC
))
180 if (!_mb_leadbyte (_PSENC
))
195 switch (psenc
->chlen
) {
197 if (_mb_singlebyte(_PSENC
))
199 if (_mb_leadbyte (_PSENC
))
203 if (_mb_trailbyte (_PSENC
))
205 if (ei
->mb_cur_max
== 4 &&
206 _mb_surrogate (_PSENC
))
210 if (_mb_leadbyte (_PSENC
))
214 if (_mb_surrogate (_PSENC
))
225 wc
= (wc
<< 8) | (*s1
++ & 0xff);
230 *nresult
= (wc
== 0) ? 0 : psenc
->chlen
- chlenbak
;
231 /* _citrus_GBK2K_init_state(ei, psenc); */
238 *nresult
= (size_t)-2;
246 *nresult
= (size_t)-1;
251 _citrus_GBK2K_wcrtomb_priv(_GBK2KEncodingInfo
* __restrict ei
,
252 char * __restrict s
, size_t n
, wchar_t wc
, _GBK2KState
* __restrict psenc
,
253 size_t * __restrict nresult
)
258 if (psenc
->chlen
!= 0) {
271 if (!_mb_singlebyte(_PUSH_PSENC(wc
))) {
277 if (!_mb_leadbyte (_PUSH_PSENC(wc
>> 8)) ||
278 !_mb_trailbyte (_PUSH_PSENC(wc
))) {
284 if (ei
->mb_cur_max
!= 4 ||
285 !_mb_leadbyte (_PUSH_PSENC(wc
>> 24)) ||
286 !_mb_surrogate (_PUSH_PSENC(wc
>> 16)) ||
287 !_mb_leadbyte (_PUSH_PSENC(wc
>> 8)) ||
288 !_mb_surrogate (_PUSH_PSENC(wc
))) {
295 memcpy(s
, psenc
->ch
, psenc
->chlen
);
296 *nresult
= psenc
->chlen
;
297 /* _citrus_GBK2K_init_state(ei, psenc); */
303 *nresult
= (size_t)-1;
309 _citrus_GBK2K_stdenc_wctocs(_GBK2KEncodingInfo
* __restrict ei __unused
,
310 _csid_t
* __restrict csid
, _index_t
* __restrict idx
, wchar_t wc
)
314 if ((uint32_t)wc
< 0x80) {
318 } else if ((uint32_t)wc
>= 0x10000) {
323 ch
= (uint8_t)(wc
>> 8);
325 if (ch
>= 0xA1 && cl
>= 0xA1) {
328 *idx
= (_index_t
)wc
& 0x7F7FU
;
330 /* extended area (0x8140-) */
341 _citrus_GBK2K_stdenc_cstowc(_GBK2KEncodingInfo
* __restrict ei
,
342 wchar_t * __restrict wc
, _csid_t csid
, _index_t idx
)
352 *wc
= (wchar_t)idx
| 0x8080U
;
360 if (ei
->mb_cur_max
!= 4)
373 _citrus_GBK2K_stdenc_get_state_desc_generic(_GBK2KEncodingInfo
* __restrict ei __unused
,
374 _GBK2KState
* __restrict psenc
, int * __restrict rstate
)
377 *rstate
= (psenc
->chlen
== 0) ? _STDENC_SDGEN_INITIAL
:
378 _STDENC_SDGEN_INCOMPLETE_CHAR
;
384 _citrus_GBK2K_encoding_module_init(_GBK2KEncodingInfo
* __restrict ei
,
385 const void * __restrict var
, size_t lenvar
)
390 memset((void *)ei
, 0, sizeof(*ei
));
393 switch (_bcs_tolower(*p
)) {
395 MATCH("2byte", ei
->mb_cur_max
= 2);
407 _citrus_GBK2K_encoding_module_uninit(_GBK2KEncodingInfo
*ei __unused
)
412 /* ----------------------------------------------------------------------
413 * public interface for stdenc
416 _CITRUS_STDENC_DECLS(GBK2K
);
417 _CITRUS_STDENC_DEF_OPS(GBK2K
);
419 #include "citrus_stdenc_template.h"