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strcasecmp.c
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strcasecmp.c
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/*
* strcasecmp() implementation for systems that don't have it or stricmp()
* or strcmpi().
*
* Copyright (c) 1987, 1993
* The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 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 "util.h"
/*@unused@*/ RCSID("$Id$");
#ifndef USE_OUR_OWN_STRCASECMP
#undef yasm__strcasecmp
#undef yasm__strncasecmp
#endif
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)strcasecmp.c 8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */
#include <ctype.h>
int
yasm__strcasecmp(const char *s1, const char *s2)
{
#ifdef HAVE_STRCASECMP
return strcasecmp(s1, s2);
#elif HAVE_STRICMP
return stricmp(s1, s2);
#elif HAVE__STRICMP
return _stricmp(s1, s2);
#elif HAVE_STRCMPI
return strcmpi(s1, s2);
#else
const unsigned char
*us1 = (const unsigned char *)s1,
*us2 = (const unsigned char *)s2;
while (tolower(*us1) == tolower(*us2++))
if (*us1++ == '\0')
return (0);
return (tolower(*us1) - tolower(*--us2));
#endif
}
int
yasm__strncasecmp(const char *s1, const char *s2, size_t n)
{
#ifdef HAVE_STRCASECMP
return strncasecmp(s1, s2, n);
#elif HAVE_STRICMP
return strnicmp(s1, s2, n);
#elif HAVE__STRNICMP
return _strnicmp(s1, s2, n);
#elif HAVE_STRCMPI
return strncmpi(s1, s2, n);
#else
const unsigned char
*us1 = (const unsigned char *)s1,
*us2 = (const unsigned char *)s2;
if (n != 0) {
do {
if (tolower(*us1) != tolower(*us2++))
return (tolower(*us1) - tolower(*--us2));
if (*us1++ == '\0')
break;
} while (--n != 0);
}
return (0);
#endif
}