68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <wctype.h>
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#include <wchar.h>
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#ifndef weak_alias
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# define __wcscasecmp wcscasecmp
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# define TOLOWER(Ch) towlower (Ch)
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#else
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# ifdef USE_IN_EXTENDED_LOCALE_MODEL
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# define __wcscasecmp __wcscasecmp_l
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# define TOLOWER(Ch) __towlower_l ((Ch), loc)
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# else
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# define TOLOWER(Ch) towlower (Ch)
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# endif
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#endif
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#ifdef USE_IN_EXTENDED_LOCALE_MODEL
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# define LOCALE_PARAM , locale_t loc
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#else
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# define LOCALE_PARAM
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#endif
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/* Compare S1 and S2, ignoring case, returning less than, equal to or
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greater than zero if S1 is lexicographically less than,
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equal to or greater than S2. */
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int
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__wcscasecmp (const wchar_t *s1, const wchar_t *s2 LOCALE_PARAM)
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{
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wint_t c1, c2;
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if (s1 == s2)
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return 0;
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do
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{
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c1 = TOLOWER (*s1++);
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c2 = TOLOWER (*s2++);
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if (c1 == L'\0')
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break;
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}
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while (c1 == c2);
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return c1 - c2;
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}
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#ifndef __wcscasecmp
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weak_alias (__wcscasecmp, wcscasecmp)
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#endif
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