nuttx/libs/libc/stdio/lib_fputwc.c

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/****************************************************************************
* libs/libc/stdio/lib_fputwc.c
*
* Copyright © 2005-2014 Rich Felker, et al.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <wchar.h>
#include <limits.h>
#include <ctype.h>
#include <nuttx/fs/fs.h>
#include "libc.h"
#ifdef CONFIG_FILE_STREAM
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: fputwc_unlocked
*
* Description:
* Write wide character to stream without lock the stream
*
* Input Parameters:
* c - the wide character to write
* f - the FILE object that identifies an output stream
*
* Returned Value:
* Return the wide character that written in to the stream on success,
* return WEOF on fail write to the stream
*
****************************************************************************/
wint_t fputwc_unlocked(wchar_t c, FAR FILE *f)
{
char mbc[MB_LEN_MAX];
int l;
if (isascii(c))
{
c = putc(c, f);
}
else
{
l = wctomb(mbc, c);
if (l < 0 || lib_fwrite_unlocked(mbc, l, f) < l)
{
c = WEOF;
}
}
return c;
}
/****************************************************************************
* Name: fputwc
*
* Description:
* Write wide character to stream
*
* Input Parameters:
* c - the wide character to write
* f - the FILE object that identifies an output stream
*
* Returned Value:
* Return the wide character that written in to the stream on success,
* return WEOF on fail write to the stream
*
****************************************************************************/
wint_t fputwc(wchar_t c, FAR FILE *f)
{
flockfile(f);
c = fputwc_unlocked(c, f);
funlockfile(f);
return c;
}
#endif /* CONFIG_FILE_STREAM */