vasilito
facf0c92e0
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/* Convert 32-bit wide character to unibyte character.
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Copyright (C) 2020-2024 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2020. */
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#include <config.h>
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#define IN_C32TOB
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/* Specification. */
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#include <uchar.h>
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#include <stdio.h>
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#include <string.h>
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#include <wchar.h>
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#if GL_CHAR32_T_IS_UNICODE
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# include "lc-charset-unicode.h"
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#endif
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#if _GL_WCHAR_T_IS_UCS4
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_GL_EXTERN_INLINE
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#endif
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int
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c32tob (wint_t wc)
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{
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#if HAVE_WORKING_MBRTOC32 && !_GL_WCHAR_T_IS_UCS4
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/* The char32_t encoding of a multibyte character may be different than its
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wchar_t encoding. */
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if (wc != WEOF)
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{
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mbstate_t state;
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char buf[8];
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mbszero (&state);
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if (c32rtomb (buf, wc, &state) == 1)
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return (unsigned char) buf[0];
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}
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return EOF;
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#elif _GL_SMALL_WCHAR_T
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/* In all known encodings, unibyte characters correspond only to
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characters in the BMP. */
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if (wc != WEOF && (wchar_t) wc == wc)
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return wctob ((wchar_t) wc);
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else
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return EOF;
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#else
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# if GL_CHAR32_T_IS_UNICODE && GL_CHAR32_T_VS_WCHAR_T_NEEDS_CONVERSION
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if (wc != 0)
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{
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wc = unicode_to_locale_encoding (wc);
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if (wc == 0)
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return EOF;
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}
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# endif
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return wctob (wc);
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#endif
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}
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