66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
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/*
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* Copyright (c) 2018 Christian Cornelssen
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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// MP support header
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#include "MacportsLegacySupport.h"
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#if __MP_LEGACY_SUPPORT_WCSCASECMP__
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#include <wchar.h>
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#include <wctype.h>
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#include <xlocale.h>
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#include <limits.h>
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#include <stdint.h>
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#if WCHAR_MAX > INT_MAX
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/* Caution: multiple argument evaluations */
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#define _MP_WCDIFFSIGN(a, b) (((b) < (a)) - ((a) < (b)))
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#else
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#define _MP_WCDIFFSIGN(a, b) ((int)(a) - (int)(b))
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#endif
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int wcsncasecmp_l(const wchar_t *l, const wchar_t *r, size_t n, locale_t locale)
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{
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wint_t lc, rc;
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int d = 0;
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while (!d && n) {
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lc = *l++; rc = *r++; --n;
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if (!(lc && rc)) n = 0;
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if (lc == rc) continue;
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lc = towlower_l(lc, locale);
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rc = towlower_l(rc, locale);
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d = _MP_WCDIFFSIGN(lc, rc);
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}
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return d;
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}
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int wcsncasecmp(const wchar_t *l, const wchar_t *r, size_t n)
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{
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return wcsncasecmp_l(l, r, n, 0);
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}
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int wcscasecmp_l(const wchar_t *l, const wchar_t *r, locale_t locale)
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{
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return wcsncasecmp_l(l, r, -1, locale);
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}
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int wcscasecmp(const wchar_t *l, const wchar_t *r)
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{
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return wcsncasecmp_l(l, r, -1, 0);
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}
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#endif /* __MP_LEGACY_SUPPORT_WCSCASECMP__ */
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