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 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 #if defined(LIBC_SCCS) && !defined(lint)
39 static char sccsid[] = "@(#)big5.c 8.1 (Berkeley) 6/4/93";
40 #endif /* LIBC_SCCS and not lint */
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
44 #include <sys/types.h>
52 extern int __mb_sb_limit;
54 static size_t _BIG5_mbrtowc(wchar_t * __restrict, const char * __restrict,
55 size_t, mbstate_t * __restrict);
56 static int _BIG5_mbsinit(const mbstate_t *);
57 static size_t _BIG5_wcrtomb(char * __restrict, wchar_t,
58 mbstate_t * __restrict);
65 _BIG5_init(_RuneLocale *rl)
68 __mbrtowc = _BIG5_mbrtowc;
69 __wcrtomb = _BIG5_wcrtomb;
70 __mbsinit = _BIG5_mbsinit;
71 _CurrentRuneLocale = rl;
78 _BIG5_mbsinit(const mbstate_t *ps)
81 return (ps == NULL || ((const _BIG5State *)ps)->ch == 0);
89 return ((c >= 0xa1 && c <= 0xfe) ? 2 : 1);
93 _BIG5_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
94 mbstate_t * __restrict ps)
100 bs = (_BIG5State *)ps;
102 if ((bs->ch & ~0xFF) != 0) {
103 /* Bad conversion state. */
115 /* Incomplete multibyte sequence */
123 wc = (bs->ch << 8) | (*s & 0xFF);
130 len = (size_t)_big5_check(*s);
134 /* Incomplete multibyte sequence */
142 wc = (wc << 8) | (*s++ & 0xff);
149 return (wc == L'\0' ? 0 : 1);
154 _BIG5_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
158 bs = (_BIG5State *)ps;
166 /* Reset to initial shift state (no-op) */
169 *s++ = (wc >> 8) & 0xff;