xref: /freebsd/lib/libc/locale/c32rtomb.c (revision b0b1dbdd)
1 /*-
2  * Copyright (c) 2013 Ed Schouten <ed@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29 
30 #include <errno.h>
31 #include <uchar.h>
32 #include <wchar.h>
33 #include "xlocale_private.h"
34 
35 size_t
36 c32rtomb_l(char * __restrict s, char32_t c32, mbstate_t * __restrict ps,
37     locale_t locale)
38 {
39 
40 	/* Unicode Standard 5.0, D90: ill-formed characters. */
41 	if ((c32 >= 0xd800 && c32 <= 0xdfff) || c32 > 0x10ffff) {
42 		errno = EILSEQ;
43 		return ((size_t)-1);
44 	}
45 
46 	FIX_LOCALE(locale);
47 	if (ps == NULL)
48 		ps = &locale->c32rtomb;
49 
50 	/* Assume wchar_t uses UTF-32. */
51 	return (wcrtomb_l(s, c32, ps, locale));
52 }
53 
54 size_t
55 c32rtomb(char * __restrict s, char32_t c32, mbstate_t * __restrict ps)
56 {
57 
58 	return (c32rtomb_l(s, c32, ps, __get_locale()));
59 }
60