2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright 2013 Garrett D'Amore <garrett@damore.org>
5 * Copyright 2010 Nexenta Systems, Inc. All rights reserved.
6 * Copyright (c) 2004 Tim J. Robbins. All rights reserved.
7 * Copyright (c) 2003 David Xu <davidxu@freebsd.org>
10 * Copyright (c) 2011 The FreeBSD Foundation
11 * All rights reserved.
12 * Portions of this software were developed by David Chisnall
13 * under sponsorship from the FreeBSD Foundation.
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
18 * 1. Redistributions of source code must retain the above copyright
19 * notice, this list of conditions and the following disclaimer.
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in the
22 * documentation and/or other materials provided with the distribution.
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #include <sys/param.h>
38 __FBSDID("$FreeBSD$");
47 static size_t _GB2312_mbrtowc(wchar_t * __restrict, const char * __restrict,
48 size_t, mbstate_t * __restrict);
49 static int _GB2312_mbsinit(const mbstate_t *);
50 static size_t _GB2312_wcrtomb(char * __restrict, wchar_t,
51 mbstate_t * __restrict);
52 static size_t _GB2312_mbsnrtowcs(wchar_t * __restrict,
53 const char ** __restrict, size_t, size_t,
54 mbstate_t * __restrict);
55 static size_t _GB2312_wcsnrtombs(char * __restrict,
56 const wchar_t ** __restrict, size_t, size_t,
57 mbstate_t * __restrict);
66 _GB2312_init(struct xlocale_ctype *l, _RuneLocale *rl)
70 l->__mbrtowc = _GB2312_mbrtowc;
71 l->__wcrtomb = _GB2312_wcrtomb;
72 l->__mbsinit = _GB2312_mbsinit;
73 l->__mbsnrtowcs = _GB2312_mbsnrtowcs;
74 l->__wcsnrtombs = _GB2312_wcsnrtombs;
76 l->__mb_sb_limit = 128;
81 _GB2312_mbsinit(const mbstate_t *ps)
84 return (ps == NULL || ((const _GB2312State *)ps)->count == 0);
88 _GB2312_check(const char *str, size_t n)
90 const u_char *s = (const u_char *)str;
93 /* Incomplete multibyte sequence */
95 if (s[0] >= 0xa1 && s[0] <= 0xfe) {
97 /* Incomplete multibyte sequence */
99 if (s[1] < 0xa1 || s[1] > 0xfe)
100 /* Invalid multibyte sequence */
103 } else if (s[0] & 0x80) {
104 /* Invalid multibyte sequence */
111 _GB2312_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
112 mbstate_t * __restrict ps)
119 gs = (_GB2312State *)ps;
121 if (gs->count < 0 || gs->count > sizeof(gs->bytes)) {
132 ncopy = MIN(MIN(n, MB_CUR_MAX), sizeof(gs->bytes) - gs->count);
133 memcpy(gs->bytes + gs->count, s, ncopy);
136 s = (char *)gs->bytes;
139 if ((len = _GB2312_check(s, n)) < 0)
140 return ((size_t)len);
144 wc = (wc << 8) | (unsigned char)*s++;
148 return (wc == L'\0' ? 0 : len - ocount);
152 _GB2312_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
156 gs = (_GB2312State *)ps;
158 if (gs->count != 0) {
164 /* Reset to initial shift state (no-op) */
167 *s++ = (wc >> 8) & 0xff;
176 _GB2312_mbsnrtowcs(wchar_t * __restrict dst,
177 const char ** __restrict src, size_t nms, size_t len,
178 mbstate_t * __restrict ps)
180 return (__mbsnrtowcs_std(dst, src, nms, len, ps, _GB2312_mbrtowc));
184 _GB2312_wcsnrtombs(char * __restrict dst,
185 const wchar_t ** __restrict src, size_t nwc, size_t len,
186 mbstate_t * __restrict ps)
188 return (__wcsnrtombs_std(dst, src, nwc, len, ps, _GB2312_wcrtomb));