mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-16 18:10:11 +00:00
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/* Compare at most N characters of two strings without taking care for
|
|
the case.
|
|
Copyright (C) 1992, 1996, 1997, 2001, 2004 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C 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.
|
|
|
|
The GNU C 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 the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
|
|
#ifndef weak_alias
|
|
# define __strncasecmp strncasecmp
|
|
# define TOLOWER(Ch) tolower (Ch)
|
|
#else
|
|
# include <locale/localeinfo.h>
|
|
# ifdef USE_IN_EXTENDED_LOCALE_MODEL
|
|
# define __strncasecmp __strncasecmp_l
|
|
# endif
|
|
# define TOLOWER(Ch) __tolower_l ((Ch), loc)
|
|
#endif
|
|
|
|
#ifdef USE_IN_EXTENDED_LOCALE_MODEL
|
|
# define LOCALE_PARAM , loc
|
|
# define LOCALE_PARAM_DECL __locale_t loc;
|
|
#else
|
|
# define LOCALE_PARAM
|
|
# define LOCALE_PARAM_DECL
|
|
#endif
|
|
|
|
/* Compare no more than N characters of S1 and S2,
|
|
ignoring case, returning less than, equal to or
|
|
greater than zero if S1 is lexicographically less
|
|
than, equal to or greater than S2. */
|
|
int
|
|
__strncasecmp (s1, s2, n LOCALE_PARAM)
|
|
const char *s1;
|
|
const char *s2;
|
|
size_t n;
|
|
LOCALE_PARAM_DECL
|
|
{
|
|
#if defined _LIBC && !defined USE_IN_EXTENDED_LOCALE_MODEL
|
|
__locale_t loc = _NL_CURRENT_LOCALE;
|
|
#endif
|
|
const unsigned char *p1 = (const unsigned char *) s1;
|
|
const unsigned char *p2 = (const unsigned char *) s2;
|
|
int result;
|
|
|
|
if (p1 == p2 || n == 0)
|
|
return 0;
|
|
|
|
while ((result = TOLOWER (*p1) - TOLOWER (*p2++)) == 0)
|
|
if (*p1++ == '\0' || --n == 0)
|
|
break;
|
|
|
|
return result;
|
|
}
|
|
#ifndef __strncasecmp
|
|
weak_alias (__strncasecmp, strncasecmp)
|
|
#endif
|