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jlechner |
/* Copyright (c) 2002 Red Hat Incorporated.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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The name of Red Hat Incorporated may not be used to endorse
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or promote products derived from this software without specific
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prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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FUNCTION
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<<iswcntrl>>---control wide character test
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INDEX
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iswcntrl
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ANSI_SYNOPSIS
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#include <wctype.h>
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int iswcntrl(wint_t <[c]>);
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TRAD_SYNOPSIS
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#include <wctype.h>
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int iswcntrl(<[c]>)
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wint_t <[c]>;
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DESCRIPTION
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<<iswcntrl>> is a function which classifies wide-character values that
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are categorized as control characters.
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RETURNS
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<<iswcntrl>> returns non-zero if <[c]> is a control wide character.
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PORTABILITY
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<<iswcntrl>> is C99.
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No supporting OS subroutines are required.
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*/
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#include <_ansi.h>
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#include <newlib.h>
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#include <wctype.h>
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#include <ctype.h>
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#include <string.h>
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#include "local.h"
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int
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_DEFUN(iswcntrl,(c), wint_t c)
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{
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int unicode = 0;
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if (__lc_ctype[0] == 'C' && __lc_ctype[1] == '\0')
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{
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unicode = 0;
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/* fall-through */
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}
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#ifdef _MB_CAPABLE
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else if (!strcmp (__lc_ctype, "C-JIS"))
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{
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c = __jp2uc (c, JP_JIS);
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unicode = 1;
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}
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else if (!strcmp (__lc_ctype, "C-SJIS"))
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{
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c = __jp2uc (c, JP_SJIS);
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unicode = 1;
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}
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else if (!strcmp (__lc_ctype, "C-EUCJP"))
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{
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c = __jp2uc (c, JP_EUCJP);
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unicode = 1;
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}
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else if (!strcmp (__lc_ctype, "C-UTF-8"))
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{
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unicode = 1;
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}
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if (unicode)
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{
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return ((c >= 0x0000 && c <= 0x001f) ||
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(c >= 0x007f && c <= 0x009f) ||
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c == 0x2028 || c == 0x2029);
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}
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#endif /* _MB_CAPABLE */
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return (c < 0x100 ? iscntrl (c) : 0);
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}
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