freebsd-dev/lib/libc/locale/wctrans.c

85 lines
2.2 KiB
C

/*-
* Copyright (c) 2002 Tim J. Robbins.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <ctype.h>
#include <errno.h>
#include <string.h>
#include <wctype.h>
enum {
_WCT_ERROR = 0,
_WCT_TOLOWER = 1,
_WCT_TOUPPER = 2
};
/*
* TODO: Supply a macro version of this.
*/
wint_t
towctrans(wint_t wc, wctrans_t desc)
{
switch (desc) {
case _WCT_TOLOWER:
wc = tolower(wc);
break;
case _WCT_TOUPPER:
wc = toupper(wc);
break;
case _WCT_ERROR:
default:
errno = EINVAL;
break;
}
return (wc);
}
wctrans_t
wctrans(const char *charclass)
{
struct {
const char *name;
wctrans_t trans;
} ccls[] = {
{ "tolower", _WCT_TOLOWER },
{ "toupper", _WCT_TOUPPER },
{ NULL, _WCT_ERROR }, /* Default */
};
int i;
i = 0;
while (ccls[i].name != NULL && strcmp(ccls[i].name, charclass) != 0)
i++;
if (ccls[i].trans == _WCT_ERROR)
errno = EINVAL;
return (ccls[i].trans);
}