60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
/*-
|
|
* Copyright (c) 2002, 2003 Tim J. Robbins.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <wchar.h>
|
|
|
|
int
|
|
wctomb(char *s, wchar_t wchar)
|
|
{
|
|
char buf[MB_LEN_MAX];
|
|
size_t rval;
|
|
|
|
if (s == NULL)
|
|
/* No support for state dependent encodings. */
|
|
return (0);
|
|
if (s == NULL)
|
|
s = buf;
|
|
/*
|
|
* We pass NULL as the state pointer to wcrtomb() because we don't
|
|
* support state-dependent encodings and don't want to waste time
|
|
* creating a zeroed mbstate_t that will not be used.
|
|
*/
|
|
if ((rval = wcrtomb(s, wchar, NULL)) == (size_t)-1)
|
|
return (-1);
|
|
if (rval > INT_MAX) {
|
|
errno = ERANGE;
|
|
return (-1);
|
|
}
|
|
return ((int)rval);
|
|
}
|