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 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
42 #include <sys/types.h>
50 extern int __mb_sb_limit;
52 static size_t _GBK_mbrtowc(wchar_t * __restrict, const char * __restrict,
53 size_t, mbstate_t * __restrict);
54 static int _GBK_mbsinit(const mbstate_t *);
55 static size_t _GBK_wcrtomb(char * __restrict, wchar_t,
56 mbstate_t * __restrict);
63 _GBK_init(struct xlocale_ctype *l, _RuneLocale *rl)
66 l->__mbrtowc = _GBK_mbrtowc;
67 l->__wcrtomb = _GBK_wcrtomb;
68 l->__mbsinit = _GBK_mbsinit;
71 l->__mb_sb_limit = 128;
76 _GBK_mbsinit(const mbstate_t *ps)
79 return (ps == NULL || ((const _GBKState *)ps)->ch == 0);
87 return ((c >= 0x81 && c <= 0xfe) ? 2 : 1);
91 _GBK_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
92 mbstate_t * __restrict ps)
100 if ((gs->ch & ~0xFF) != 0) {
101 /* Bad conversion state. */
113 /* Incomplete multibyte sequence */
121 wc = (gs->ch << 8) | (*s & 0xFF);
128 len = (size_t)_gbk_check(*s);
132 /* Incomplete multibyte sequence */
140 wc = (wc << 8) | (*s++ & 0xff);
147 return (wc == L'\0' ? 0 : 1);
152 _GBK_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
156 gs = (_GBKState *)ps;
164 /* Reset to initial shift state (no-op) */
167 *s++ = (wc >> 8) & 0xff;