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