xref: /freebsd-10.1-release/lib/libc/locale/c32rtomb.c

/*-
 * Copyright (c) 2013 Ed Schouten <ed@FreeBSD.org>
 * 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 <uchar.h>
#include <wchar.h>
#include "xlocale_private.h"

size_t
c32rtomb_l(char * __restrict s, char32_t c32, mbstate_t * __restrict ps,
    locale_t locale)
{

	/* Unicode Standard 5.0, D90: ill-formed characters. */
	if ((c32 >= 0xd800 && c32 <= 0xdfff) || c32 > 0x10ffff) {
		errno = EILSEQ;
		return ((size_t)-1);
	}

	FIX_LOCALE(locale);
	if (ps == NULL)
		ps = &locale->c32rtomb;

	/* Assume wchar_t uses UTF-32. */
	return (wcrtomb_l(s, c32, ps, locale));
}

size_t
c32rtomb(char * __restrict s, char32_t c32, mbstate_t * __restrict ps)
{

	return (c32rtomb_l(s, c32, ps, __get_locale()));
}