1*3a628b46Sschwarze /* $OpenBSD: duplocale.c,v 1.1 2017/09/05 03:16:13 schwarze Exp $ */
2*3a628b46Sschwarze /*
3*3a628b46Sschwarze * Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org>
4*3a628b46Sschwarze *
5*3a628b46Sschwarze * Permission to use, copy, modify, and distribute this software for any
6*3a628b46Sschwarze * purpose with or without fee is hereby granted, provided that the above
7*3a628b46Sschwarze * copyright notice and this permission notice appear in all copies.
8*3a628b46Sschwarze *
9*3a628b46Sschwarze * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10*3a628b46Sschwarze * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11*3a628b46Sschwarze * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12*3a628b46Sschwarze * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13*3a628b46Sschwarze * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14*3a628b46Sschwarze * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15*3a628b46Sschwarze * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16*3a628b46Sschwarze */
17*3a628b46Sschwarze
18*3a628b46Sschwarze #include <errno.h>
19*3a628b46Sschwarze #include <locale.h>
20*3a628b46Sschwarze
21*3a628b46Sschwarze #include "rune.h"
22*3a628b46Sschwarze
23*3a628b46Sschwarze locale_t
duplocale(locale_t oldloc)24*3a628b46Sschwarze duplocale(locale_t oldloc)
25*3a628b46Sschwarze {
26*3a628b46Sschwarze if (oldloc == _LOCALE_UTF8 && _Utf8RuneLocale != NULL)
27*3a628b46Sschwarze return _LOCALE_UTF8;
28*3a628b46Sschwarze if (oldloc == _LOCALE_C)
29*3a628b46Sschwarze return _LOCALE_C;
30*3a628b46Sschwarze if (oldloc == LC_GLOBAL_LOCALE)
31*3a628b46Sschwarze return _GlobalRuneLocale == _Utf8RuneLocale ?
32*3a628b46Sschwarze _LOCALE_UTF8 : _LOCALE_C;
33*3a628b46Sschwarze
34*3a628b46Sschwarze /* POSIX says: invalid input -> undefined behaviour. */
35*3a628b46Sschwarze errno = EINVAL;
36*3a628b46Sschwarze return _LOCALE_NONE;
37*3a628b46Sschwarze }
38