xref: /freebsd-11.0-release/lib/libc/locale/collcmp.c

/*
 * Copyright (C) 1996 by Andrey A. Chernov, Moscow, Russia.
 * All rights reserved.
 *
 * Copyright (c) 2011 The FreeBSD Foundation
 * All rights reserved.
 * Portions of this software were developed by David Chisnall
 * under sponsorship from the FreeBSD Foundation.
 *
 * 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 ``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 REGENTS 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: releng/11.0/lib/libc/locale/collcmp.c 301461 2016-06-05 19:12:52Z pfg $");

#include <string.h>
#include <wchar.h>
#include <xlocale.h>
#include "collate.h"

/*
 * Compare two characters using collate
 */

int __collate_range_cmp(struct xlocale_collate *table, char c1, char c2)
{
	char s1[2], s2[2];

	s1[0] = c1;
	s1[1] = '\0';
	s2[0] = c2;
	s2[1] = '\0';
	struct _xlocale l = {{0}};
	l.components[XLC_COLLATE] = (struct xlocale_component *)table;
	return (strcoll_l(s1, s2, &l));
}

int __wcollate_range_cmp(struct xlocale_collate *table, wchar_t c1, wchar_t c2)
{
	wchar_t s1[2], s2[2];

	s1[0] = c1;
	s1[1] = L'\0';
	s2[0] = c2;
	s2[1] = L'\0';
	struct _xlocale l = {{0}};
	l.components[XLC_COLLATE] = (struct xlocale_component *)table;
	return (wcscoll_l(s1, s2, &l));
}