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/* $OpenBSD: uselocale.c,v 1.1 2017/09/05 03:16:13 schwarze Exp $ */
/*
* Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <errno.h>
#include <locale.h>
#include <tib.h>
#include "rune.h"
locale_t
uselocale(locale_t newloc)
{
struct tib *tib;
_RuneLocale *oldrunes;
tib = TIB_GET();
oldrunes = tib->tib_locale;
if (newloc == _LOCALE_UTF8 && _Utf8RuneLocale != NULL)
tib->tib_locale = _Utf8RuneLocale;
else if (newloc == _LOCALE_C)
tib->tib_locale = &_DefaultRuneLocale;
else if (newloc == LC_GLOBAL_LOCALE)
tib->tib_locale = NULL;
else if (newloc != _LOCALE_NONE) {
errno = EINVAL;
return _LOCALE_NONE;
}
return oldrunes == NULL ? LC_GLOBAL_LOCALE :
oldrunes == _Utf8RuneLocale ? _LOCALE_UTF8 : _LOCALE_C;
}
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