85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
/*
|
|
* Copyright (C) 1996 by Andrey A. Chernov, Moscow, Russia.
|
|
* 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 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#define ASCII_COMPATIBLE_COLLATE /* see share/colldef */
|
|
|
|
#include <string.h>
|
|
#include "collate.h"
|
|
#ifndef ASCII_COMPATIBLE_COLLATE
|
|
#include <ctype.h>
|
|
#endif
|
|
|
|
/*
|
|
* Compare two characters converting collate information
|
|
* into ASCII-compatible range, it allows to handle
|
|
* "[a-z]"-type ranges with national characters.
|
|
*/
|
|
|
|
int __collate_range_cmp (c1, c2)
|
|
int c1, c2;
|
|
{
|
|
static char s1[2], s2[2];
|
|
int ret;
|
|
#ifndef ASCII_COMPATIBLE_COLLATE
|
|
int as1, as2, al1, al2;
|
|
#endif
|
|
|
|
c1 &= UCHAR_MAX;
|
|
c2 &= UCHAR_MAX;
|
|
if (c1 == c2)
|
|
return (0);
|
|
|
|
#ifndef ASCII_COMPATIBLE_COLLATE
|
|
as1 = isascii(c1);
|
|
as2 = isascii(c2);
|
|
al1 = isalpha(c1);
|
|
al2 = isalpha(c2);
|
|
|
|
if (as1 || as2 || al1 || al2) {
|
|
if ((as1 && as2) || (!al1 && !al2))
|
|
return (c1 - c2);
|
|
if (al1 && !al2) {
|
|
if (isupper(c1))
|
|
return ('A' - c2);
|
|
else
|
|
return ('a' - c2);
|
|
} else if (al2 && !al1) {
|
|
if (isupper(c2))
|
|
return (c1 - 'A');
|
|
else
|
|
return (c1 - 'a');
|
|
}
|
|
}
|
|
#endif
|
|
s1[0] = c1;
|
|
s2[0] = c2;
|
|
if ((ret = strcoll(s1, s2)) != 0)
|
|
return (ret);
|
|
return (c1 - c2);
|
|
}
|