2 /* $NetBSD: citrus_dechanyu.c,v 1.3 2008/06/14 16:01:07 tnozaki 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
29 #include <sys/cdefs.h>
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_stdenc.h"
47 #include "citrus_dechanyu.h"
49 /* ----------------------------------------------------------------------
50 * private stuffs used by templates
60 } _DECHanyuEncodingInfo;
62 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
63 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.__CONCAT(s_,_func_)
65 #define _FUNCNAME(m) __CONCAT(_citrus_DECHanyu_,m)
66 #define _ENCODING_INFO _DECHanyuEncodingInfo
67 #define _ENCODING_STATE _DECHanyuState
68 #define _ENCODING_MB_CUR_MAX(_ei_) 4
69 #define _ENCODING_IS_STATE_DEPENDENT 0
70 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
74 _citrus_DECHanyu_init_state(_DECHanyuEncodingInfo * __restrict ei __unused,
75 _DECHanyuState * __restrict psenc)
84 _citrus_DECHanyu_pack_state(_DECHanyuEncodingInfo * __restrict ei __unused,
85 void * __restrict pspriv, const _DECHanyuState * __restrict psenc)
88 memcpy(pspriv, (const void *)psenc, sizeof(*psenc));
93 _citrus_DECHanyu_unpack_state(_DECHanyuEncodingInfo * __restrict ei __unused,
94 _DECHanyuState * __restrict psenc,
95 const void * __restrict pspriv)
98 memcpy((void *)psenc, pspriv, sizeof(*psenc));
104 _citrus_DECHanyu_encoding_module_uninit(_DECHanyuEncodingInfo *ei __unused)
112 _citrus_DECHanyu_encoding_module_init(_DECHanyuEncodingInfo * __restrict ei __unused,
113 const void * __restrict var __unused, size_t lenvar __unused)
131 return (c >= 0xA1 && c <= 0xFE);
139 return (c >= 0x21 && c <= 0x7E);
156 #define HANYUBIT 0xC2CB0000
162 return (c >= 0x21 && c <= 0x7E);
167 _citrus_DECHanyu_mbrtowc_priv(_DECHanyuEncodingInfo * __restrict ei,
168 wchar_t * __restrict pwc, char ** __restrict s, size_t n,
169 _DECHanyuState * __restrict psenc, size_t * __restrict nresult)
176 _citrus_DECHanyu_init_state(ei, psenc);
177 *nresult = _ENCODING_IS_STATE_DEPENDENT;
183 switch (psenc->chlen) {
188 if (is_singlebyte(ch)) {
191 *nresult = (size_t)((ch == 0) ? 0 : 1);
195 if (!is_leadbyte(ch))
197 psenc->ch[psenc->chlen++] = ch;
200 ch = psenc->ch[0] & 0xFF;
201 if (!is_leadbyte(ch))
205 ch = psenc->ch[0] & 0xFF;
207 ch = psenc->ch[1] & 0xFF;
209 wc |= (wchar_t)HANYUBIT;
218 switch (psenc->chlen) {
226 psenc->ch[psenc->chlen++] = ch;
227 wc |= (wchar_t)HANYUBIT;
231 if (!is_leadbyte(ch))
233 psenc->ch[psenc->chlen++] = ch;
240 if (!is_leadbyte(ch))
242 psenc->ch[psenc->chlen++] = ch;
245 ch = psenc->ch[2] & 0xFF;
246 if (!is_leadbyte(ch))
251 wc |= (wchar_t)(ch << 8);
253 if (!is_trailbyte(ch))
258 *nresult = (size_t)(s0 - *s);
265 *nresult = (size_t)-2;
270 *nresult = (size_t)-1;
276 _citrus_DECHanyu_wcrtomb_priv(_DECHanyuEncodingInfo * __restrict ei __unused,
277 char * __restrict s, size_t n, wchar_t wc,
278 _DECHanyuState * __restrict psenc, size_t * __restrict nresult)
282 if (psenc->chlen != 0)
285 /* XXX: assume wchar_t as int */
286 if ((uint32_t)wc <= 0x7F) {
289 if ((uint32_t)wc > 0xFFFF) {
290 if ((wc & ~0xFFFF) != (wchar_t)HANYUBIT)
292 psenc->ch[psenc->chlen++] = (wc >> 24) & 0xFF;
293 psenc->ch[psenc->chlen++] = (wc >> 16) & 0xFF;
296 ch = (wc >> 8) & 0xFF;
297 if (!is_leadbyte(ch))
299 psenc->ch[psenc->chlen++] = ch;
301 if (!is_trailbyte(ch))
304 psenc->ch[psenc->chlen++] = ch;
305 if (n < psenc->chlen) {
306 *nresult = (size_t)-1;
309 memcpy(s, psenc->ch, psenc->chlen);
310 *nresult = psenc->chlen;
316 *nresult = (size_t)-1;
322 _citrus_DECHanyu_stdenc_wctocs(_DECHanyuEncodingInfo * __restrict ei __unused,
323 _csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
330 /* XXX: assume wchar_t as int */
331 if ((uint32_t)wc > 0x7F) {
332 if ((uint32_t)wc > 0xFFFF) {
333 if ((wc & ~0xFFFF) != (wchar_t)HANYUBIT)
337 if (!is_leadbyte((wc >> 8) & 0xFF) ||
338 !is_trailbyte(wc & 0xFF))
340 plane += (wc & 0x80) ? 1 : 2;
344 *idx = (_index_t)(wc & mask);
351 _citrus_DECHanyu_stdenc_cstowc(_DECHanyuEncodingInfo * __restrict ei __unused,
352 wchar_t * __restrict wc, _csid_t csid, _index_t idx)
358 } else if (csid <= 4) {
359 if (!is_94charset(idx >> 8))
361 if (!is_94charset(idx & 0xFF))
376 _citrus_DECHanyu_stdenc_get_state_desc_generic(
377 _DECHanyuEncodingInfo * __restrict ei __unused,
378 _DECHanyuState * __restrict psenc, int * __restrict rstate)
381 *rstate = (psenc->chlen == 0)
382 ? _STDENC_SDGEN_INITIAL
383 : _STDENC_SDGEN_INCOMPLETE_CHAR;
387 /* ----------------------------------------------------------------------
388 * public interface for stdenc
391 _CITRUS_STDENC_DECLS(DECHanyu);
392 _CITRUS_STDENC_DEF_OPS(DECHanyu);
394 #include "citrus_stdenc_template.h"