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 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
37 #include <sys/types.h>
45 extern int __mb_sb_limit;
47 static size_t _GBK_mbrtowc(wchar_t * __restrict, const char * __restrict,
48 size_t, mbstate_t * __restrict);
49 static int _GBK_mbsinit(const mbstate_t *);
50 static size_t _GBK_wcrtomb(char * __restrict, wchar_t,
51 mbstate_t * __restrict);
58 _GBK_init(_RuneLocale *rl)
61 __mbrtowc = _GBK_mbrtowc;
62 __wcrtomb = _GBK_wcrtomb;
63 __mbsinit = _GBK_mbsinit;
64 _CurrentRuneLocale = rl;
71 _GBK_mbsinit(const mbstate_t *ps)
74 return (ps == NULL || ((const _GBKState *)ps)->ch == 0);
82 return ((c >= 0x81 && c <= 0xfe) ? 2 : 1);
86 _GBK_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
87 mbstate_t * __restrict ps)
95 if ((gs->ch & ~0xFF) != 0) {
96 /* Bad conversion state. */
108 /* Incomplete multibyte sequence */
116 wc = (gs->ch << 8) | (*s & 0xFF);
123 len = (size_t)_gbk_check(*s);
127 /* Incomplete multibyte sequence */
135 wc = (wc << 8) | (*s++ & 0xff);
142 return (wc == L'\0' ? 0 : 1);
147 _GBK_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
151 gs = (_GBKState *)ps;
159 /* Reset to initial shift state (no-op) */
162 *s++ = (wc >> 8) & 0xff;