wine/libs/port/strncasecmp.c

43 lines
1.3 KiB
C

/*
* strncasecmp function
*
* Copyright 1996 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <ctype.h>
#ifndef HAVE_STRNCASECMP
#undef strncasecmp
int strncasecmp( const char *str1, const char *str2, size_t n )
{
const unsigned char *ustr1 = (const unsigned char *)str1;
const unsigned char *ustr2 = (const unsigned char *)str2;
int res;
if (!n) return 0;
while ((--n > 0) && *ustr1)
{
if ((res = toupper(*ustr1) - toupper(*ustr2))) return res;
ustr1++;
ustr2++;
}
return toupper(*ustr1) - toupper(*ustr2);
}
#endif /* HAVE_STRNCASECMP */