2 /* $NetBSD: citrus_dechanyu.c,v 1.4 2011/11/19 18:20:13 tnozaki Exp $ */
5 * SPDX-License-Identifier: BSD-2-Clause
7 * Copyright (c)2007 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
31 #include <sys/cdefs.h>
32 #include <sys/types.h>
44 #include "citrus_namespace.h"
45 #include "citrus_types.h"
46 #include "citrus_bcs.h"
47 #include "citrus_module.h"
48 #include "citrus_stdenc.h"
49 #include "citrus_dechanyu.h"
51 /* ----------------------------------------------------------------------
52 * private stuffs used by templates
62 } _DECHanyuEncodingInfo;
64 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
65 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.__CONCAT(s_,_func_)
67 #define _FUNCNAME(m) __CONCAT(_citrus_DECHanyu_,m)
68 #define _ENCODING_INFO _DECHanyuEncodingInfo
69 #define _ENCODING_STATE _DECHanyuState
70 #define _ENCODING_MB_CUR_MAX(_ei_) 4
71 #define _ENCODING_IS_STATE_DEPENDENT 0
72 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
76 _citrus_DECHanyu_init_state(_DECHanyuEncodingInfo * __restrict ei __unused,
77 _DECHanyuState * __restrict psenc)
86 _citrus_DECHanyu_pack_state(_DECHanyuEncodingInfo * __restrict ei __unused,
87 void * __restrict pspriv, const _DECHanyuState * __restrict psenc)
90 memcpy(pspriv, (const void *)psenc, sizeof(*psenc));
95 _citrus_DECHanyu_unpack_state(_DECHanyuEncodingInfo * __restrict ei __unused,
96 _DECHanyuState * __restrict psenc,
97 const void * __restrict pspriv)
100 memcpy((void *)psenc, pspriv, sizeof(*psenc));
106 _citrus_DECHanyu_encoding_module_uninit(_DECHanyuEncodingInfo *ei __unused)
114 _citrus_DECHanyu_encoding_module_init(_DECHanyuEncodingInfo * __restrict ei __unused,
115 const void * __restrict var __unused, size_t lenvar __unused)
133 return (c >= 0xA1 && c <= 0xFE);
141 return (c >= 0x21 && c <= 0x7E);
158 #define HANYUBIT 0xC2CB0000
164 return (c >= 0x21 && c <= 0x7E);
169 _citrus_DECHanyu_mbrtowc_priv(_DECHanyuEncodingInfo * __restrict ei,
170 wchar_t * __restrict pwc, char ** __restrict s, size_t n,
171 _DECHanyuState * __restrict psenc, size_t * __restrict nresult)
178 _citrus_DECHanyu_init_state(ei, psenc);
179 *nresult = _ENCODING_IS_STATE_DEPENDENT;
185 switch (psenc->chlen) {
190 if (is_singlebyte(ch)) {
193 *nresult = (size_t)((ch == 0) ? 0 : 1);
197 if (!is_leadbyte(ch))
199 psenc->ch[psenc->chlen++] = ch;
202 ch = psenc->ch[0] & 0xFF;
203 if (!is_leadbyte(ch))
207 ch = psenc->ch[0] & 0xFF;
209 ch = psenc->ch[1] & 0xFF;
211 wc |= (wchar_t)HANYUBIT;
220 switch (psenc->chlen) {
228 psenc->ch[psenc->chlen++] = ch;
229 wc |= (wchar_t)HANYUBIT;
233 if (!is_leadbyte(ch))
235 psenc->ch[psenc->chlen++] = ch;
242 if (!is_leadbyte(ch))
244 psenc->ch[psenc->chlen++] = ch;
247 ch = psenc->ch[2] & 0xFF;
248 if (!is_leadbyte(ch))
253 wc |= (wchar_t)(ch << 8);
255 if (!is_trailbyte(ch))
260 *nresult = (size_t)(s0 - *s);
267 *nresult = (size_t)-2;
272 *nresult = (size_t)-1;
278 _citrus_DECHanyu_wcrtomb_priv(_DECHanyuEncodingInfo * __restrict ei __unused,
279 char * __restrict s, size_t n, wchar_t wc,
280 _DECHanyuState * __restrict psenc, size_t * __restrict nresult)
284 if (psenc->chlen != 0)
287 /* XXX: assume wchar_t as int */
288 if ((uint32_t)wc <= 0x7F) {
291 if ((uint32_t)wc > 0xFFFF) {
292 if ((wc & ~0xFFFF) != (wchar_t)HANYUBIT)
294 psenc->ch[psenc->chlen++] = (wc >> 24) & 0xFF;
295 psenc->ch[psenc->chlen++] = (wc >> 16) & 0xFF;
298 ch = (wc >> 8) & 0xFF;
299 if (!is_leadbyte(ch))
301 psenc->ch[psenc->chlen++] = ch;
303 if (!is_trailbyte(ch))
306 psenc->ch[psenc->chlen++] = ch;
307 if (n < psenc->chlen) {
308 *nresult = (size_t)-1;
311 memcpy(s, psenc->ch, psenc->chlen);
312 *nresult = psenc->chlen;
318 *nresult = (size_t)-1;
324 _citrus_DECHanyu_stdenc_wctocs(_DECHanyuEncodingInfo * __restrict ei __unused,
325 _csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
332 /* XXX: assume wchar_t as int */
333 if ((uint32_t)wc > 0x7F) {
334 if ((uint32_t)wc > 0xFFFF) {
335 if ((wc & ~0xFFFF) != (wchar_t)HANYUBIT)
339 if (!is_leadbyte((wc >> 8) & 0xFF) ||
340 !is_trailbyte(wc & 0xFF))
342 plane += (wc & 0x80) ? 1 : 2;
346 *idx = (_index_t)(wc & mask);
353 _citrus_DECHanyu_stdenc_cstowc(_DECHanyuEncodingInfo * __restrict ei __unused,
354 wchar_t * __restrict wc, _csid_t csid, _index_t idx)
360 } else if (csid <= 4) {
361 if (!is_94charset(idx >> 8))
363 if (!is_94charset(idx & 0xFF))
378 _citrus_DECHanyu_stdenc_get_state_desc_generic(
379 _DECHanyuEncodingInfo * __restrict ei __unused,
380 _DECHanyuState * __restrict psenc, int * __restrict rstate)
383 *rstate = (psenc->chlen == 0)
384 ? _STDENC_SDGEN_INITIAL
385 : _STDENC_SDGEN_INCOMPLETE_CHAR;
389 /* ----------------------------------------------------------------------
390 * public interface for stdenc
393 _CITRUS_STDENC_DECLS(DECHanyu);
394 _CITRUS_STDENC_DEF_OPS(DECHanyu);
396 #include "citrus_stdenc_template.h"