2 * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved.
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
7 * Paul Borman at Krystal Technologies.
9 * Copyright (c) 2011 The FreeBSD Foundation
10 * All rights reserved.
11 * Portions of this software were developed by David Chisnall
12 * under sponsorship from the FreeBSD Foundation.
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * 3. All advertising materials mentioning features or use of this software
23 * must display the following acknowledgement:
24 * This product includes software developed by the University of
25 * California, Berkeley and its contributors.
26 * 4. Neither the name of the University nor the names of its contributors
27 * may be used to endorse or promote products derived from this software
28 * without specific prior written permission.
30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 #if defined(LIBC_SCCS) && !defined(lint)
44 static char sccsid[] = "@(#)big5.c 8.1 (Berkeley) 6/4/93";
45 #endif /* LIBC_SCCS and not lint */
46 #include <sys/cdefs.h>
47 __FBSDID("$FreeBSD$");
49 #include <sys/types.h>
57 extern int __mb_sb_limit;
59 static size_t _BIG5_mbrtowc(wchar_t * __restrict, const char * __restrict,
60 size_t, mbstate_t * __restrict);
61 static int _BIG5_mbsinit(const mbstate_t *);
62 static size_t _BIG5_wcrtomb(char * __restrict, wchar_t,
63 mbstate_t * __restrict);
70 _BIG5_init(struct xlocale_ctype *l, _RuneLocale *rl)
73 l->__mbrtowc = _BIG5_mbrtowc;
74 l->__wcrtomb = _BIG5_wcrtomb;
75 l->__mbsinit = _BIG5_mbsinit;
78 l->__mb_sb_limit = 128;
83 _BIG5_mbsinit(const mbstate_t *ps)
86 return (ps == NULL || ((const _BIG5State *)ps)->ch == 0);
94 return ((c >= 0xa1 && c <= 0xfe) ? 2 : 1);
98 _BIG5_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
99 mbstate_t * __restrict ps)
105 bs = (_BIG5State *)ps;
107 if ((bs->ch & ~0xFF) != 0) {
108 /* Bad conversion state. */
120 /* Incomplete multibyte sequence */
128 wc = (bs->ch << 8) | (*s & 0xFF);
135 len = (size_t)_big5_check(*s);
139 /* Incomplete multibyte sequence */
147 wc = (wc << 8) | (*s++ & 0xff);
154 return (wc == L'\0' ? 0 : 1);
159 _BIG5_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
163 bs = (_BIG5State *)ps;
171 /* Reset to initial shift state (no-op) */
174 *s++ = (wc >> 8) & 0xff;