2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2013 Ed Schouten <ed@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
37 char16_t lead_surrogate;
38 mbstate_t c32_mbstate;
42 c16rtomb_l(char * __restrict s, char16_t c16, mbstate_t * __restrict ps,
50 ps = &(XLOCALE_CTYPE(locale)->c16rtomb);
51 cs = (_Char16State *)ps;
53 /* If s is a null pointer, the value of parameter c16 is ignored. */
56 } else if (cs->lead_surrogate >= 0xd800 &&
57 cs->lead_surrogate <= 0xdbff) {
58 /* We should see a trail surrogate now. */
59 if (c16 < 0xdc00 || c16 > 0xdfff) {
63 c32 = 0x10000 + ((cs->lead_surrogate & 0x3ff) << 10 |
65 } else if (c16 >= 0xd800 && c16 <= 0xdbff) {
66 /* Store lead surrogate for next invocation. */
67 cs->lead_surrogate = c16;
70 /* Regular character. */
73 cs->lead_surrogate = 0;
75 return (c32rtomb_l(s, c32, &cs->c32_mbstate, locale));
79 c16rtomb(char * __restrict s, char16_t c16, mbstate_t * __restrict ps)
82 return (c16rtomb_l(s, c16, ps, __get_locale()));