1 /* $FreeBSD: head/lib/libiconv_modules/UTF8/citrus_utf8.c 281550 2015-04-15 09:09:20Z tijl $ */
2 /* $NetBSD: citrus_utf8.c,v 1.17 2008/06/14 16:01:08 tnozaki 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>
75 #include "citrus_namespace.h"
76 #include "citrus_types.h"
77 #include "citrus_module.h"
78 #include "citrus_stdenc.h"
79 #include "citrus_utf8.h"
82 /* ----------------------------------------------------------------------
83 * private stuffs used by templates
86 static uint8_t _UTF8_count_array
[256] = {
87 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 00 - 0F */
88 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 10 - 1F */
89 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 20 - 2F */
90 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 30 - 3F */
91 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 40 - 4F */
92 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 50 - 5F */
93 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 60 - 6F */
94 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 70 - 7F */
95 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 80 - 8F */
96 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 90 - 9F */
97 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* A0 - AF */
98 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* B0 - BF */
99 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* C0 - CF */
100 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* D0 - DF */
101 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* E0 - EF */
102 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 0, 0 /* F0 - FF */
105 static uint8_t const *_UTF8_count
= _UTF8_count_array
;
107 static const uint32_t _UTF8_range
[] = {
109 0x00000000, 0x00000080, 0x00000800, 0x00010000,
110 0x00200000, 0x04000000, 0x80000000,
118 typedef void *_UTF8EncodingInfo
;
120 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
121 #define _CEI_TO_STATE(_ei_, _func_) (_ei_)->states.s_##_func_
123 #define _FUNCNAME(m) _citrus_UTF8_##m
124 #define _ENCODING_INFO _UTF8EncodingInfo
125 #define _ENCODING_STATE _UTF8State
126 #define _ENCODING_MB_CUR_MAX(_ei_) 6
127 #define _ENCODING_IS_STATE_DEPENDENT 0
128 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
131 _UTF8_findlen(wchar_t v
)
136 c
= (uint32_t)v
; /*XXX*/
137 for (i
= 1; i
< sizeof(_UTF8_range
) / sizeof(_UTF8_range
[0]) - 1; i
++)
138 if (c
>= _UTF8_range
[i
] && c
< _UTF8_range
[i
+ 1])
141 return (-1); /*out of range*/
145 _UTF8_surrogate(wchar_t wc
)
148 return (wc
>= 0xd800 && wc
<= 0xdfff);
153 _citrus_UTF8_init_state(_UTF8EncodingInfo
*ei __unused
, _UTF8State
*s
)
162 _citrus_UTF8_pack_state(_UTF8EncodingInfo
*ei __unused
, void *pspriv
,
166 memcpy(pspriv
, (const void *)s
, sizeof(*s
));
171 _citrus_UTF8_unpack_state(_UTF8EncodingInfo
*ei __unused
, _UTF8State
*s
,
175 memcpy((void *)s
, pspriv
, sizeof(*s
));
180 _citrus_UTF8_mbrtowc_priv(_UTF8EncodingInfo
*ei
, wchar_t *pwc
, char **s
,
181 size_t n
, _UTF8State
*psenc
, size_t *nresult
)
191 _citrus_UTF8_init_state(ei
, psenc
);
192 *nresult
= 0; /* state independent */
196 /* make sure we have the first byte in the buffer */
197 if (psenc
->chlen
== 0) {
200 psenc
->ch
[psenc
->chlen
++] = *s0
++;
203 c
= _UTF8_count
[psenc
->ch
[0] & 0xff];
204 if (c
< 1 || c
< psenc
->chlen
)
208 wchar
= psenc
->ch
[0] & 0xff;
210 while (psenc
->chlen
< c
) {
213 psenc
->ch
[psenc
->chlen
++] = *s0
++;
215 wchar
= psenc
->ch
[0] & (0x7f >> c
);
216 for (i
= 1; i
< c
; i
++) {
217 if ((psenc
->ch
[i
] & 0xc0) != 0x80)
220 wchar
|= (psenc
->ch
[i
] & 0x3f);
222 if (_UTF8_surrogate(wchar
) || _UTF8_findlen(wchar
) != c
)
227 *nresult
= (wchar
== 0) ? 0 : s0
- *s
;
234 *nresult
= (size_t)-1;
239 *nresult
= (size_t)-2;
244 _citrus_UTF8_wcrtomb_priv(_UTF8EncodingInfo
*ei __unused
, char *s
, size_t n
,
245 wchar_t wc
, _UTF8State
*psenc __unused
, size_t *nresult
)
251 if (_UTF8_surrogate(wc
)) {
255 cnt
= _UTF8_findlen(wc
);
256 if (cnt
<= 0 || cnt
> 6) {
257 /* invalid UCS4 value */
262 /* bound check failure */
269 for (i
= cnt
- 1; i
> 0; i
--) {
270 s
[i
] = 0x80 | (c
& 0x3f);
277 s
[0] &= (0x7f >> cnt
);
278 s
[0] |= ((0xff00 >> cnt
) & 0xff);
282 *nresult
= (size_t)cnt
;
286 *nresult
= (size_t)-1;
292 _citrus_UTF8_stdenc_wctocs(_UTF8EncodingInfo
* __restrict ei __unused
,
293 _csid_t
* __restrict csid
, _index_t
* __restrict idx
,
298 *idx
= (_citrus_index_t
)wc
;
305 _citrus_UTF8_stdenc_cstowc(_UTF8EncodingInfo
* __restrict ei __unused
,
306 wchar_t * __restrict wc
, _csid_t csid
, _index_t idx
)
319 _citrus_UTF8_stdenc_get_state_desc_generic(_UTF8EncodingInfo
* __restrict ei __unused
,
320 _UTF8State
* __restrict psenc
, int * __restrict rstate
)
323 *rstate
= (psenc
->chlen
== 0) ? _STDENC_SDGEN_INITIAL
:
324 _STDENC_SDGEN_INCOMPLETE_CHAR
;
330 _citrus_UTF8_encoding_module_init(_UTF8EncodingInfo
* __restrict ei __unused
,
331 const void * __restrict var __unused
, size_t lenvar __unused
)
339 _citrus_UTF8_encoding_module_uninit(_UTF8EncodingInfo
*ei __unused
)
344 /* ----------------------------------------------------------------------
345 * public interface for stdenc
348 _CITRUS_STDENC_DECLS(UTF8
);
349 _CITRUS_STDENC_DEF_OPS(UTF8
);
351 #include "citrus_stdenc_template.h"