45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2014.
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This file is part of the Sortix C Library.
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The Sortix C Library 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 published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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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 the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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wchar/btowc.c
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Single byte to wide character conversion.
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*******************************************************************************/
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#include <errno.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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wint_t btowc(int ic)
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{
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if ( ic == EOF )
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return WEOF;
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unsigned char uc = (unsigned char) ic;
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char c = (char) uc;
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mbstate_t ps;
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memset(&ps, 0, sizeof(ps));
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wchar_t wc;
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int saved_errno = errno;
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size_t status = mbrtowc(&wc, (const char*) &c, 1, &ps);
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if ( status == (size_t) -1 || status == (size_t) -2 )
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return errno = saved_errno, WEOF;
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return (wint_t) wc;
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}
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