/*      $NetBSD: wcsncasecmp.c,v 1.4 2013/05/17 12:55:57 joerg Exp $    */

/*
* Copyright (C) 2006 Aleksey Cheusov
*
* This material is provided "as is", with absolutely no warranty expressed
* or implied. Any use is at your own risk.
*
* Permission to use or copy this software for any purpose is hereby granted
* without fee. Permission to modify the code and to distribute modified
* code is also granted without any restrictions.
*/

#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: wcsncasecmp.c,v 1.4 2013/05/17 12:55:57 joerg Exp $");
#endif /* LIBC_SCCS and not lint */

#include "namespace.h"
#include <assert.h>
#include <wchar.h>
#include <wctype.h>
#include <locale.h>
#include "setlocale_local.h"

__weak_alias(wcsncasecmp,_wcsncasecmp)
__weak_alias(wcsncasecmp_l,_wcsncasecmp_l)

int
wcsncasecmp_l(const wchar_t *s1, const wchar_t *s2, size_t n, locale_t loc)
{
       int lc1  = 0;
       int lc2  = 0;
       int diff = 0;

       _DIAGASSERT(s1);
       _DIAGASSERT(s2);

       while (n--) {
               lc1 = towlower_l(*s1, loc);
               lc2 = towlower_l(*s2, loc);

               diff = lc1 - lc2;
               if (diff)
                       return diff;

               if (!lc1)
                       return 0;

               ++s1;
               ++s2;
       }

       return 0;
}

int
wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n)
{
       return wcsncasecmp_l(s1, s2, n, _current_locale());
}