69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 1994 Christian E. Hopps
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Christian E. Hopps.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* 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.
|
|
*/
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static char *rcsid = "$NetBSD: strncasecmp.c,v 1.4 1997/10/13 11:56:03 lukem Exp $";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#ifndef _KERNEL
|
|
#include <string.h>
|
|
#else
|
|
#include <lib/libkern/libkern.h>
|
|
#endif
|
|
|
|
int
|
|
strncasecmp(s1, s2, n)
|
|
const char *s1;
|
|
const char *s2;
|
|
size_t n;
|
|
{
|
|
if (n == 0)
|
|
return 0;
|
|
|
|
do {
|
|
unsigned char c1 = (unsigned char) *s1++;
|
|
unsigned char c2 = (unsigned char) *s2++;
|
|
|
|
if (c1 != c2) {
|
|
if (c1 >= 'A' && c1 <= 'Z' &&
|
|
c2 >= 'a' && c2 <= 'z')
|
|
c1 += 'a' - 'A';
|
|
else if (c1 >= 'a' && c1 <= 'z' &&
|
|
c2 >= 'A' && c2 <= 'Z')
|
|
c2 += 'a' - 'A';
|
|
if (c1 != c2)
|
|
return c1 - c2;
|
|
}
|
|
if (c1 == 0)
|
|
break;
|
|
} while (--n != 0);
|
|
|
|
return 0;
|
|
}
|