[apple/libc.git] / string / FreeBSD / strcoll.c

/*-
 * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
 *		at Electronni Visti IA, Kiev, Ukraine.
 *			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 ``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 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: src/lib/libc/string/strcoll.c,v 1.14 2009/02/03 17:58:20 danger Exp $");

#include <stdlib.h>
#include <string.h>
#include "collate.h"

int
strcoll(const char *s, const char *s2)
{
	int len, len2, prim, prim2, sec, sec2, ret, ret2;
	const char *t, *t2;
	char *tt, *tt2;

	if (__collate_load_error)
		return strcmp(s, s2);

	len = len2 = 1;
	ret = ret2 = 0;
	if (__collate_substitute_nontrivial) {
		t = tt = __collate_substitute(s);
		t2 = tt2 = __collate_substitute(s2);
	} else {
		tt = tt2 = NULL;
		t = s;
		t2 = s2;
	}
	while(*t && *t2) {
		prim = prim2 = 0;
		while(*t && !prim) {
			__collate_lookup(t, &len, &prim, &sec);
			t += len;
		}
		while(*t2 && !prim2) {
			__collate_lookup(t2, &len2, &prim2, &sec2);
			t2 += len2;
		}
		if(!prim || !prim2)
			break;
		if(prim != prim2) {
			ret = prim - prim2;
			goto end;
		}
		if(!ret2)
			ret2 = sec - sec2;
	}
	if(!*t && *t2)
		ret = -(int)((u_char)*t2);
	else if(*t && !*t2)
		ret = (u_char)*t;
	else if(!*t && !*t2)
		ret = ret2;
  end:
	free(tt);
	free(tt2);

	return ret;
}
Commit	Line	Data
5b2abdfb A	1	/*-
	2	* Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
	3	* at Electronni Visti IA, Kiev, Ukraine.
	4	* All rights reserved.
	5	*
	6	* Redistribution and use in source and binary forms, with or without
	7	* modification, are permitted provided that the following conditions
	8	* are met:
	9	* 1. Redistributions of source code must retain the above copyright
	10	* notice, this list of conditions and the following disclaimer.
	11	* 2. Redistributions in binary form must reproduce the above copyright
	12	* notice, this list of conditions and the following disclaimer in the
	13	* documentation and/or other materials provided with the distribution.
	14	*
	15	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
	16	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	17	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	18	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
	19	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	20	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	21	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	22	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	23	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	24	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	25	* SUCH DAMAGE.
5b2abdfb A	26	*/
5b2abdfb A	27
5b2abdfb	28	#include <sys/cdefs.h>
1f2f436a	29	__FBSDID("$FreeBSD: src/lib/libc/string/strcoll.c,v 1.14 2009/02/03 17:58:20 danger Exp $");
5b2abdfb	30
9385eb3d A	31	#include <stdlib.h>
	32	#include <string.h>
	33	#include "collate.h"
5b2abdfb	34
9385eb3d	35	int
1f2f436a	36	strcoll(const char s, const char s2)
9385eb3d A	37	{
	38	int len, len2, prim, prim2, sec, sec2, ret, ret2;
	39	const char t, t2;
	40	char tt, tt2;
5b2abdfb	41
9385eb3d A	42	if (__collate_load_error)
9385eb3d A	43	return strcmp(s, s2);
5b2abdfb	44
9385eb3d A	45	len = len2 = 1;
	46	ret = ret2 = 0;
	47	if (__collate_substitute_nontrivial) {
	48	t = tt = __collate_substitute(s);
	49	t2 = tt2 = __collate_substitute(s2);
	50	} else {
	51	tt = tt2 = NULL;
	52	t = s;
	53	t2 = s2;
	54	}
	55	while(t && t2) {
	56	prim = prim2 = 0;
	57	while(*t && !prim) {
	58	__collate_lookup(t, &len, &prim, &sec);
	59	t += len;
	60	}
	61	while(*t2 && !prim2) {
	62	__collate_lookup(t2, &len2, &prim2, &sec2);
	63	t2 += len2;
	64	}
	65	if(!prim \|\| !prim2)
	66	break;
	67	if(prim != prim2) {
	68	ret = prim - prim2;
	69	goto end;
	70	}
	71	if(!ret2)
	72	ret2 = sec - sec2;
	73	}
	74	if(!t && t2)
	75	ret = -(int)((u_char)*t2);
	76	else if(t && !t2)
	77	ret = (u_char)*t;
	78	else if(!t && !t2)
	79	ret = ret2;
	80	end:
	81	free(tt);
	82	free(tt2);
5b2abdfb	83
9385eb3d A	84	return ret;
9385eb3d A	85	}