xref: /freebsd/lib/libc/locale/wcrtomb.c (revision e92a3d83fcba95f35d5f162df92f2d5b8351c2e3)
1e92a3d83STim J. Robbins /*-
2e92a3d83STim J. Robbins  * Copyright (c) 2002 Tim J. Robbins.
3e92a3d83STim J. Robbins  * All rights reserved.
4e92a3d83STim J. Robbins  *
5e92a3d83STim J. Robbins  * Redistribution and use in source and binary forms, with or without
6e92a3d83STim J. Robbins  * modification, are permitted provided that the following conditions
7e92a3d83STim J. Robbins  * are met:
8e92a3d83STim J. Robbins  * 1. Redistributions of source code must retain the above copyright
9e92a3d83STim J. Robbins  *    notice, this list of conditions and the following disclaimer.
10e92a3d83STim J. Robbins  * 2. Redistributions in binary form must reproduce the above copyright
11e92a3d83STim J. Robbins  *    notice, this list of conditions and the following disclaimer in the
12e92a3d83STim J. Robbins  *    documentation and/or other materials provided with the distribution.
13e92a3d83STim J. Robbins  *
14e92a3d83STim J. Robbins  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15e92a3d83STim J. Robbins  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16e92a3d83STim J. Robbins  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17e92a3d83STim J. Robbins  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18e92a3d83STim J. Robbins  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19e92a3d83STim J. Robbins  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20e92a3d83STim J. Robbins  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21e92a3d83STim J. Robbins  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22e92a3d83STim J. Robbins  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23e92a3d83STim J. Robbins  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24e92a3d83STim J. Robbins  * SUCH DAMAGE.
25e92a3d83STim J. Robbins  */
26e92a3d83STim J. Robbins 
27e92a3d83STim J. Robbins #include <sys/cdefs.h>
28e92a3d83STim J. Robbins __FBSDID("$FreeBSD$");
29e92a3d83STim J. Robbins 
30e92a3d83STim J. Robbins #include <errno.h>
31e92a3d83STim J. Robbins #include <rune.h>
32e92a3d83STim J. Robbins #include <stdlib.h>
33e92a3d83STim J. Robbins #include <wchar.h>
34e92a3d83STim J. Robbins 
35e92a3d83STim J. Robbins size_t
36e92a3d83STim J. Robbins wcrtomb(char *__restrict s, wchar_t wc, mbstate_t *__restrict ps __unused)
37e92a3d83STim J. Robbins {
38e92a3d83STim J. Robbins 	char *e;
39e92a3d83STim J. Robbins 
40e92a3d83STim J. Robbins 	sputrune(wc, s, MB_CUR_MAX, &e);
41e92a3d83STim J. Robbins 	if (e == NULL) {
42e92a3d83STim J. Robbins 		errno = EILSEQ;
43e92a3d83STim J. Robbins 		return ((size_t)-1);
44e92a3d83STim J. Robbins 	}
45e92a3d83STim J. Robbins 	return ((size_t)(e - s));
46e92a3d83STim J. Robbins }
47