81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/* Convert wide character to multibyte character.
|
|
Copyright (C) 2008-2023 Free Software Foundation, Inc.
|
|
Written by Bruno Haible <bruno@clisp.org>, 2008.
|
|
|
|
This file is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as
|
|
published by the Free Software Foundation; either version 2.1 of the
|
|
License, or (at your option) any later version.
|
|
|
|
This file is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>. */
|
|
|
|
#include <config.h>
|
|
|
|
/* Specification. */
|
|
#include <wchar.h>
|
|
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
|
|
|
|
size_t
|
|
wcrtomb (char *s, wchar_t wc, mbstate_t *ps)
|
|
#undef wcrtomb
|
|
{
|
|
/* This implementation of wcrtomb supports only stateless encodings.
|
|
ps must be in the initial state. */
|
|
if (ps != NULL && !mbsinit (ps))
|
|
{
|
|
errno = EINVAL;
|
|
return (size_t)(-1);
|
|
}
|
|
|
|
#if !HAVE_WCRTOMB /* IRIX 6.5 */ \
|
|
|| WCRTOMB_RETVAL_BUG /* Solaris 11.3, MSVC */ \
|
|
|| WCRTOMB_C_LOCALE_BUG /* Android */
|
|
if (s == NULL)
|
|
/* We know the NUL wide character corresponds to the NUL character. */
|
|
return 1;
|
|
else
|
|
#endif
|
|
{
|
|
#if HAVE_WCRTOMB
|
|
# if WCRTOMB_C_LOCALE_BUG /* Android */
|
|
/* Implement consistently with mbrtowc(): through a 1:1 correspondence,
|
|
as in ISO-8859-1. */
|
|
if (wc >= 0 && wc <= 0xff)
|
|
{
|
|
*s = (unsigned char) wc;
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
errno = EILSEQ;
|
|
return (size_t)(-1);
|
|
}
|
|
# else
|
|
return wcrtomb (s, wc, ps);
|
|
# endif
|
|
#else /* IRIX 6.5 */
|
|
/* Fallback for platforms that don't have wcrtomb().
|
|
Implement on top of wctomb().
|
|
This code is not multithread-safe. */
|
|
int ret = wctomb (s, wc);
|
|
|
|
if (ret >= 0)
|
|
return ret;
|
|
else
|
|
{
|
|
errno = EILSEQ;
|
|
return (size_t)(-1);
|
|
}
|
|
#endif
|
|
}
|
|
}
|