2 /* $NetBSD: citrus_euc.c,v 1.14 2009/01/11 02:46:24 christos Exp $ */
5 * Copyright (c)2002 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
32 * The Regents of the University of California. All rights reserved.
34 * This code is derived from software contributed to Berkeley by
35 * Paul Borman at Krystal Technologies.
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62 #include <sys/cdefs.h>
63 #include <sys/types.h>
74 #include "citrus_namespace.h"
75 #include "citrus_bcs.h"
76 #include "citrus_types.h"
77 #include "citrus_module.h"
78 #include "citrus_stdenc.h"
79 #include "citrus_euc.h"
82 /* ----------------------------------------------------------------------
83 * private stuffs used by templates
101 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
102 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
104 #define _FUNCNAME(m) _citrus_EUC_##m
105 #define _ENCODING_INFO _EUCEncodingInfo
106 #define _ENCODING_STATE _EUCState
107 #define _ENCODING_MB_CUR_MAX(_ei_) (_ei_)->mb_cur_max
108 #define _ENCODING_IS_STATE_DEPENDENT 0
109 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
113 _citrus_EUC_cs(unsigned int c)
118 return ((c & 0x80) ? c == _SS3 ? 3 : c == _SS2 ? 2 : 1 : 0);
122 _citrus_EUC_parse_variable(_EUCEncodingInfo *ei, const void *var,
123 size_t lenvar __unused)
129 /* parse variable string */
133 v = (const char *)var;
135 while (*v == ' ' || *v == '\t')
139 for (x = 0; x < 4; ++x) {
140 ei->count[x] = (int)_bcs_strtol(v, (char **)&e, 0);
141 if (v == e || !(v = e) || ei->count[x] < 1 || ei->count[x] > 4) {
144 if (ei->mb_cur_max < ei->count[x])
145 ei->mb_cur_max = ei->count[x];
146 while (*v == ' ' || *v == '\t')
148 ei->bits[x] = (int)_bcs_strtol(v, (char **)&e, 0);
149 if (v == e || !(v = e)) {
152 while (*v == ' ' || *v == '\t')
155 ei->mask = (int)_bcs_strtol(v, (char **)&e, 0);
156 if (v == e || !(v = e)) {
166 _citrus_EUC_init_state(_EUCEncodingInfo *ei __unused, _EUCState *s)
169 memset(s, 0, sizeof(*s));
175 _citrus_EUC_pack_state(_EUCEncodingInfo *ei __unused, void *pspriv,
179 memcpy(pspriv, (const void *)s, sizeof(*s));
184 _citrus_EUC_unpack_state(_EUCEncodingInfo *ei __unused, _EUCState *s,
188 memcpy((void *)s, pspriv, sizeof(*s));
193 _citrus_EUC_mbrtowc_priv(_EUCEncodingInfo *ei, wchar_t *pwc, char **s,
194 size_t n, _EUCState *psenc, size_t *nresult)
197 int c, chlenbak, cs, len;
198 char *s0, *s1 = NULL;
203 _citrus_EUC_init_state(ei, psenc);
204 *nresult = 0; /* state independent */
208 chlenbak = psenc->chlen;
210 /* make sure we have the first byte in the buffer */
211 switch (psenc->chlen) {
215 psenc->ch[0] = *s0++;
227 c = ei->count[cs = _citrus_EUC_cs(psenc->ch[0] & 0xff)];
230 while (psenc->chlen < c) {
233 psenc->ch[psenc->chlen] = *s0++;
256 wchar = (wchar << 8) | (*s1++ & 0xff);
257 wchar = (wchar & ~ei->mask) | ei->bits[cs];
262 *nresult = wchar ? (size_t)(c - chlenbak) : 0;
267 *nresult = (size_t)-1;
271 *nresult = (size_t)-2;
277 _citrus_EUC_wcrtomb_priv(_EUCEncodingInfo *ei, char *s, size_t n, wchar_t wc,
278 _EUCState *psenc __unused, size_t *nresult)
288 for (cs = 0; cs < sizeof(ei->count) / sizeof(ei->count[0]); cs++)
289 if (m == ei->bits[cs])
291 /* fallback case - not sure if it is necessary */
292 if (cs == sizeof(ei->count) / sizeof(ei->count[0]))
296 if (n < (unsigned)i) {
300 m = (cs) ? 0x80 : 0x00;
313 *s++ = ((nm >> (i << 3)) & 0xff) | m;
315 *nresult = (size_t)ei->count[cs];
319 *nresult = (size_t)-1;
325 _citrus_EUC_stdenc_wctocs(_EUCEncodingInfo * __restrict ei,
326 _csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
333 *csid = (_citrus_csid_t)m;
334 *idx = (_citrus_index_t)nm;
341 _citrus_EUC_stdenc_cstowc(_EUCEncodingInfo * __restrict ei,
342 wchar_t * __restrict wc, _csid_t csid, _index_t idx)
345 if ((csid & ~ei->mask) != 0 || (idx & ei->mask) != 0)
348 *wc = (wchar_t)csid | (wchar_t)idx;
355 _citrus_EUC_stdenc_get_state_desc_generic(_EUCEncodingInfo * __restrict ei __unused,
356 _EUCState * __restrict psenc, int * __restrict rstate)
359 *rstate = (psenc->chlen == 0) ? _STDENC_SDGEN_INITIAL :
360 _STDENC_SDGEN_INCOMPLETE_CHAR;
366 _citrus_EUC_encoding_module_init(_EUCEncodingInfo * __restrict ei,
367 const void * __restrict var, size_t lenvar)
370 return (_citrus_EUC_parse_variable(ei, var, lenvar));
375 _citrus_EUC_encoding_module_uninit(_EUCEncodingInfo * __restrict ei __unused)
380 /* ----------------------------------------------------------------------
381 * public interface for stdenc
384 _CITRUS_STDENC_DECLS(EUC);
385 _CITRUS_STDENC_DEF_OPS(EUC);
387 #include "citrus_stdenc_template.h"