1 /* $NetBSD: citrus_euc.c,v 1.11 2006/03/19 01:25:44 christos Exp $ */
4 * Copyright (c)2002 Citrus Project,
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * The Regents of the University of California. All rights reserved.
33 * This code is derived from software contributed to Berkeley by
34 * Paul Borman at Krystal Technologies.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61 #include <sys/types.h>
72 #include "citrus_namespace.h"
73 #include "citrus_types.h"
74 #include "citrus_module.h"
75 #include "citrus_ctype.h"
76 #include "citrus_stdenc.h"
77 #include "citrus_euc.h"
80 /* ----------------------------------------------------------------------
81 * private stuffs used by templates
99 /* for future multi-locale facility */
104 _EUCState s_mbsrtowcs;
106 _EUCState s_wcsrtombs;
114 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
115 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
117 #define _FUNCNAME(m) _citrus_EUC_##m
118 #define _ENCODING_INFO _EUCEncodingInfo
119 #define _CTYPE_INFO _EUCCTypeInfo
120 #define _ENCODING_STATE _EUCState
121 #define _ENCODING_MB_CUR_MAX(_ei_) (_ei_)->mb_cur_max
122 #define _ENCODING_IS_STATE_DEPENDENT 0
123 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
127 _citrus_EUC_cs(unsigned int c)
131 return ((c & 0x80) ? c == _SS3 ? 3 : c == _SS2 ? 2 : 1 : 0);
135 _citrus_EUC_parse_variable(_EUCEncodingInfo *ei,
136 const void *var, size_t lenvar)
141 /* parse variable string */
145 v = (const char *) var;
147 while (*v == ' ' || *v == '\t')
151 for (x = 0; x < 4; ++x) {
152 ei->count[x] = (int) strtol(v, (char **)&e, 0);
153 if (v == e || !(v = e) || ei->count[x]<1 || ei->count[x]>4) {
156 if (ei->mb_cur_max < ei->count[x])
157 ei->mb_cur_max = ei->count[x];
158 while (*v == ' ' || *v == '\t')
160 ei->bits[x] = (int) strtol(v, (char **)&e, 0);
161 if (v == e || !(v = e)) {
164 while (*v == ' ' || *v == '\t')
167 ei->mask = (int)strtol(v, (char **)&e, 0);
168 if (v == e || !(v = e)) {
178 _citrus_EUC_init_state(_EUCEncodingInfo *ei, _EUCState *s)
180 memset(s, 0, sizeof(*s));
185 _citrus_EUC_pack_state(_EUCEncodingInfo *ei, void *pspriv, const _EUCState *s)
187 memcpy(pspriv, (const void *)s, sizeof(*s));
192 _citrus_EUC_unpack_state(_EUCEncodingInfo *ei, _EUCState *s,
195 memcpy((void *)s, pspriv, sizeof(*s));
199 _citrus_EUC_mbrtowc_priv(_EUCEncodingInfo *ei, wchar_t *pwc, const char **s,
200 size_t n, _EUCState *psenc, size_t *nresult)
205 const char *s0, *s1 = NULL;
207 _DIAGASSERT(nresult != NULL);
208 _DIAGASSERT(ei != NULL);
209 _DIAGASSERT(psenc != NULL);
210 _DIAGASSERT(s != NULL);
215 _citrus_EUC_init_state(ei, psenc);
216 *nresult = 0; /* state independent */
220 chlenbak = psenc->chlen;
222 /* make sure we have the first byte in the buffer */
223 switch (psenc->chlen) {
227 psenc->ch[0] = *s0++;
239 c = ei->count[cs = _citrus_EUC_cs(psenc->ch[0] & 0xff)];
242 while (psenc->chlen < c) {
245 psenc->ch[psenc->chlen] = *s0++;
268 wchar = (wchar << 8) | (*s1++ & 0xff);
269 wchar = (wchar & ~ei->mask) | ei->bits[cs];
278 *nresult = (size_t)(c - chlenbak);
285 *nresult = (size_t)-1;
289 *nresult = (size_t)-2;
295 _citrus_EUC_wcrtomb_priv(_EUCEncodingInfo *ei, char *s, size_t n, wchar_t wc,
296 _EUCState *psenc, size_t *nresult)
301 _DIAGASSERT(ei != NULL);
302 _DIAGASSERT(nresult != NULL);
303 _DIAGASSERT(s != NULL);
309 cs < sizeof(ei->count)/sizeof(ei->count[0]);
311 if (m == ei->bits[cs])
314 /* fallback case - not sure if it is necessary */
315 if (cs == sizeof(ei->count)/sizeof(ei->count[0]))
323 m = (cs) ? 0x80 : 0x00;
336 *s++ = ((nm >> (i << 3)) & 0xff) | m;
338 *nresult = (size_t)ei->count[cs];
342 *nresult = (size_t)-1;
348 _citrus_EUC_stdenc_wctocs(_EUCEncodingInfo * __restrict ei,
349 _csid_t * __restrict csid,
350 _index_t * __restrict idx, wchar_t wc)
354 _DIAGASSERT(ei != NULL && csid != NULL && idx != NULL);
359 *csid = (_citrus_csid_t)m;
360 *idx = (_citrus_index_t)nm;
367 _citrus_EUC_stdenc_cstowc(_EUCEncodingInfo * __restrict ei,
368 wchar_t * __restrict wc,
369 _csid_t csid, _index_t idx)
372 _DIAGASSERT(ei != NULL && wc != NULL);
374 if ((csid & ~ei->mask) != 0 || (idx & ei->mask) != 0)
377 *wc = (wchar_t)csid | (wchar_t)idx;
384 _citrus_EUC_stdenc_get_state_desc_generic(_EUCEncodingInfo * __restrict ei,
385 _EUCState * __restrict psenc,
386 int * __restrict rstate)
389 if (psenc->chlen == 0)
390 *rstate = _STDENC_SDGEN_INITIAL;
392 *rstate = _STDENC_SDGEN_INCOMPLETE_CHAR;
399 _citrus_EUC_encoding_module_init(_EUCEncodingInfo * __restrict ei,
400 const void * __restrict var, size_t lenvar)
403 _DIAGASSERT(ei != NULL);
405 return (_citrus_EUC_parse_variable(ei, var, lenvar));
410 _citrus_EUC_encoding_module_uninit(_EUCEncodingInfo * __restrict ei)
414 /* ----------------------------------------------------------------------
415 * public interface for ctype
418 _CITRUS_CTYPE_DECLS(EUC);
419 _CITRUS_CTYPE_DEF_OPS(EUC);
421 #include "citrus_ctype_template.h"
423 /* ----------------------------------------------------------------------
424 * public interface for stdenc
427 _CITRUS_STDENC_DECLS(EUC);
428 _CITRUS_STDENC_DEF_OPS(EUC);
430 #include "citrus_stdenc_template.h"