2 /* $NetBSD: citrus_zw.c,v 1.4 2008/06/14 16:01:08 tnozaki Exp $ */
5 * SPDX-License-Identifier: BSD-2-Clause
7 * Copyright (c)2004, 2006 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
33 #include <sys/cdefs.h>
34 #include <sys/types.h>
46 #include "citrus_namespace.h"
47 #include "citrus_types.h"
48 #include "citrus_module.h"
49 #include "citrus_stdenc.h"
50 #include "citrus_zw.h"
52 /* ----------------------------------------------------------------------
53 * private stuffs used by templates
61 NONE, AMBIGIOUS, ASCII, GB2312
70 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
71 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
73 #define _FUNCNAME(m) _citrus_ZW_##m
74 #define _ENCODING_INFO _ZWEncodingInfo
75 #define _ENCODING_STATE _ZWState
76 #define _ENCODING_MB_CUR_MAX(_ei_) MB_LEN_MAX
77 #define _ENCODING_IS_STATE_DEPENDENT 1
78 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) ((_ps_)->charset != NONE)
82 _citrus_ZW_init_state(_ZWEncodingInfo * __restrict ei __unused,
83 _ZWState * __restrict psenc)
87 psenc->charset = NONE;
93 _citrus_ZW_pack_state(_ZWEncodingInfo * __restrict ei __unused,
94 void *__restrict pspriv, const _ZWState * __restrict psenc)
97 memcpy(pspriv, (const void *)psenc, sizeof(*psenc));
102 _citrus_ZW_unpack_state(_ZWEncodingInfo * __restrict ei __unused,
103 _ZWState * __restrict psenc, const void * __restrict pspriv)
106 memcpy((void *)psenc, pspriv, sizeof(*psenc));
111 _citrus_ZW_mbrtowc_priv(_ZWEncodingInfo * __restrict ei,
112 wchar_t * __restrict pwc, char **__restrict s, size_t n,
113 _ZWState * __restrict psenc, size_t * __restrict nresult)
120 _citrus_ZW_init_state(ei, psenc);
121 *nresult = (size_t)_ENCODING_IS_STATE_DEPENDENT;
130 *nresult = (size_t)-2; \
134 ch = (unsigned char)*s0++; \
135 if (len++ > MB_LEN_MAX || ch > 0x7F)\
137 psenc->ch[psenc->chlen++] = ch; \
138 } while (/*CONSTCOND*/0)
141 switch (psenc->charset) {
143 switch (psenc->chlen) {
146 switch (psenc->ch[0]) {
147 case '\0': case '\n':
148 psenc->charset = NONE;
156 ch = (unsigned char)psenc->ch[0];
163 if (psenc->chlen != 0)
166 ch = (unsigned char)psenc->ch[0];
168 if (ch != '\n' && ch != '\0')
169 psenc->charset = ASCII;
174 psenc->charset = AMBIGIOUS;
178 if (psenc->chlen != 0)
181 if (psenc->ch[0] != 'W') {
182 psenc->charset = ASCII;
186 psenc->charset = GB2312;
190 switch (psenc->chlen) {
193 ch = (unsigned char)psenc->ch[0];
195 psenc->charset = NONE;
199 } else if (ch == '\n') {
200 psenc->charset = NONE;
207 if (psenc->ch[0] == ' ') {
208 ch = (unsigned char)psenc->ch[1];
212 } else if (psenc->ch[0] == '#') {
213 ch = (unsigned char)psenc->ch[1];
215 psenc->charset = NONE;
219 } else if (ch == ' ') {
225 ch = (unsigned char)psenc->ch[0];
226 if (ch < 0x21 || ch > 0x7E)
228 wc = (wchar_t)(ch << 8);
229 ch = (unsigned char)psenc->ch[1];
230 if (ch < 0x21 || ch > 0x7E) {
232 *nresult = (size_t)-1;
248 *nresult = (size_t)(wc == 0 ? 0 : len);
256 _citrus_ZW_wcrtomb_priv(_ZWEncodingInfo * __restrict ei __unused,
257 char *__restrict s, size_t n, wchar_t wc,
258 _ZWState * __restrict psenc, size_t * __restrict nresult)
262 if (psenc->chlen != 0)
264 if ((uint32_t)wc <= 0x7F) {
265 ch = (unsigned char)wc;
266 switch (psenc->charset) {
268 if (ch == '\0' || ch == '\n')
269 psenc->ch[psenc->chlen++] = ch;
274 psenc->ch[psenc->chlen++] = 'z';
275 psenc->ch[psenc->chlen++] = 'W';
276 psenc->ch[psenc->chlen++] = ' ';
277 psenc->ch[psenc->chlen++] = ch;
278 psenc->charset = GB2312;
286 psenc->ch[psenc->chlen++] = '\n';
287 psenc->ch[psenc->chlen++] = '\0';
288 psenc->charset = NONE;
289 } else if (ch == '\n') {
290 psenc->ch[psenc->chlen++] = '#';
291 psenc->ch[psenc->chlen++] = '\n';
292 psenc->charset = NONE;
294 psenc->ch[psenc->chlen++] = ' ';
295 psenc->ch[psenc->chlen++] = ch;
301 } else if ((uint32_t)wc <= 0x7E7E) {
302 switch (psenc->charset) {
307 psenc->ch[psenc->chlen++] = 'z';
308 psenc->ch[psenc->chlen++] = 'W';
309 psenc->charset = GB2312;
315 ch = (wc >> 8) & 0xFF;
316 if (ch < 0x21 || ch > 0x7E)
318 psenc->ch[psenc->chlen++] = ch;
320 if (ch < 0x21 || ch > 0x7E)
322 psenc->ch[psenc->chlen++] = ch;
329 *nresult = (size_t)-1;
332 memcpy(s, psenc->ch, psenc->chlen);
333 *nresult = psenc->chlen;
341 _citrus_ZW_put_state_reset(_ZWEncodingInfo * __restrict ei __unused,
342 char * __restrict s, size_t n, _ZWState * __restrict psenc,
343 size_t * __restrict nresult)
346 if (psenc->chlen != 0)
348 switch (psenc->charset) {
352 psenc->ch[psenc->chlen++] = '\n';
353 psenc->charset = NONE;
356 *nresult = psenc->chlen;
357 if (psenc->chlen > 0) {
358 memcpy(s, psenc->ch, psenc->chlen);
371 _citrus_ZW_stdenc_get_state_desc_generic(_ZWEncodingInfo * __restrict ei __unused,
372 _ZWState * __restrict psenc, int * __restrict rstate)
375 switch (psenc->charset) {
377 if (psenc->chlen != 0)
379 *rstate = _STDENC_SDGEN_INITIAL;
382 if (psenc->chlen != 0)
384 *rstate = _STDENC_SDGEN_INCOMPLETE_SHIFT;
388 switch (psenc->chlen) {
390 *rstate = _STDENC_SDGEN_STABLE;
393 *rstate = (psenc->ch[0] == '#') ?
394 _STDENC_SDGEN_INCOMPLETE_SHIFT :
395 _STDENC_SDGEN_INCOMPLETE_CHAR;
409 _citrus_ZW_stdenc_wctocs(_ZWEncodingInfo * __restrict ei __unused,
410 _csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
413 *csid = (_csid_t)(wc <= (wchar_t)0x7FU) ? 0 : 1;
421 _citrus_ZW_stdenc_cstowc(_ZWEncodingInfo * __restrict ei __unused,
422 wchar_t * __restrict wc, _csid_t csid, _index_t idx)
438 _citrus_ZW_encoding_module_uninit(_ZWEncodingInfo *ei __unused)
445 _citrus_ZW_encoding_module_init(_ZWEncodingInfo * __restrict ei __unused,
446 const void *__restrict var __unused, size_t lenvar __unused)
452 /* ----------------------------------------------------------------------
453 * public interface for stdenc
456 _CITRUS_STDENC_DECLS(ZW);
457 _CITRUS_STDENC_DEF_OPS(ZW);
459 #include "citrus_stdenc_template.h"