1 /* $FreeBSD: head/lib/libiconv_modules/EUC/citrus_euc.c 281550 2015-04-15 09:09:20Z tijl $ */
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"