2 * Copyright 2013 Garrett D'Amore <garrett@damore.org>
3 * Copyright 2010 Nexenta Systems, Inc. All rights reserved.
4 * Copyright (c) 2004 Tim J. Robbins. All rights reserved.
5 * Copyright (c) 2003 David Xu <davidxu@freebsd.org>
8 * Copyright (c) 2011 The FreeBSD Foundation
10 * Portions of this software were developed by David Chisnall
11 * under sponsorship from the FreeBSD Foundation.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <sys/param.h>
36 __FBSDID("$FreeBSD$");
45 static size_t _GB2312_mbrtowc(wchar_t * __restrict, const char * __restrict,
46 size_t, mbstate_t * __restrict);
47 static int _GB2312_mbsinit(const mbstate_t *);
48 static size_t _GB2312_wcrtomb(char * __restrict, wchar_t,
49 mbstate_t * __restrict);
50 static size_t _GB2312_mbsnrtowcs(wchar_t * __restrict,
51 const char ** __restrict, size_t, size_t,
52 mbstate_t * __restrict);
53 static size_t _GB2312_wcsnrtombs(char * __restrict,
54 const wchar_t ** __restrict, size_t, size_t,
55 mbstate_t * __restrict);
64 _GB2312_init(struct xlocale_ctype *l, _RuneLocale *rl)
68 l->__mbrtowc = _GB2312_mbrtowc;
69 l->__wcrtomb = _GB2312_wcrtomb;
70 l->__mbsinit = _GB2312_mbsinit;
71 l->__mbsnrtowcs = _GB2312_mbsnrtowcs;
72 l->__wcsnrtombs = _GB2312_wcsnrtombs;
74 l->__mb_sb_limit = 128;
79 _GB2312_mbsinit(const mbstate_t *ps)
82 return (ps == NULL || ((const _GB2312State *)ps)->count == 0);
86 _GB2312_check(const char *str, size_t n)
88 const u_char *s = (const u_char *)str;
91 /* Incomplete multibyte sequence */
93 if (s[0] >= 0xa1 && s[0] <= 0xfe) {
95 /* Incomplete multibyte sequence */
97 if (s[1] < 0xa1 || s[1] > 0xfe)
98 /* Invalid multibyte sequence */
101 } else if (s[0] & 0x80) {
102 /* Invalid multibyte sequence */
109 _GB2312_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
110 mbstate_t * __restrict ps)
117 gs = (_GB2312State *)ps;
119 if (gs->count < 0 || gs->count > sizeof(gs->bytes)) {
130 ncopy = MIN(MIN(n, MB_CUR_MAX), sizeof(gs->bytes) - gs->count);
131 memcpy(gs->bytes + gs->count, s, ncopy);
134 s = (char *)gs->bytes;
137 if ((len = _GB2312_check(s, n)) < 0)
138 return ((size_t)len);
142 wc = (wc << 8) | (unsigned char)*s++;
146 return (wc == L'\0' ? 0 : len - ocount);
150 _GB2312_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
154 gs = (_GB2312State *)ps;
156 if (gs->count != 0) {
162 /* Reset to initial shift state (no-op) */
165 *s++ = (wc >> 8) & 0xff;
174 _GB2312_mbsnrtowcs(wchar_t * __restrict dst,
175 const char ** __restrict src, size_t nms, size_t len,
176 mbstate_t * __restrict ps)
178 return (__mbsnrtowcs_std(dst, src, nms, len, ps, _GB2312_mbrtowc));
182 _GB2312_wcsnrtombs(char * __restrict dst,
183 const wchar_t ** __restrict src, size_t nwc, size_t len,
184 mbstate_t * __restrict ps)
186 return (__wcsnrtombs_std(dst, src, nwc, len, ps, _GB2312_wcrtomb));