104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
/* 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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<<towctrans>>, <<towctrans_l>>---extensible wide-character translation
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INDEX
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towctrans
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INDEX
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towctrans_l
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SYNOPSIS
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#include <wctype.h>
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wint_t towctrans(wint_t <[c]>, wctrans_t <[w]>);
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#include <wctype.h>
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wint_t towctrans_l(wint_t <[c]>, wctrans_t <[w]>, locale_t <[locale]>);
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DESCRIPTION
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<<towctrans>> is a function which converts wide characters based on
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a specified translation type <[w]>. If the translation type is
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invalid or cannot be applied to the current character, no change
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to the character is made.
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<<towctrans_l>> is like <<towctrans>> but performs the function based on the
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locale specified by the locale object locale. If <[locale]> is
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LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
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RETURNS
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<<towctrans>>, <<towctrans_l>> return the translated equivalent of <[c]>
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when it is a valid for the given translation, otherwise, it returns the
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input character. When the translation type is invalid, <<errno>> is
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set to <<EINVAL>>.
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PORTABILITY
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<<towctrans>> is C99.
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<<towctrans_l>> is POSIX-1.2008.
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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 <string.h>
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#include <reent.h>
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#include <wctype.h>
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#include <errno.h>
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#include "local.h"
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wint_t
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_DEFUN (_towctrans_r, (r, c, w),
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struct _reent *r,
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wint_t c,
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wctrans_t w)
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{
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if (w == WCT_TOLOWER)
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return towlower (c);
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else if (w == WCT_TOUPPER)
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return towupper (c);
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else
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{
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r->_errno = EINVAL;
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return c;
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}
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}
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#ifndef _REENT_ONLY
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wint_t
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_DEFUN (towctrans, (c, w),
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wint_t c,
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wctrans_t w)
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{
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return _towctrans_r (_REENT, c, w);
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}
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#endif /* !_REENT_ONLY */
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