82 lines
3.0 KiB
C
82 lines
3.0 KiB
C
/****************************************************************************
|
|
* libc/wchar/lib_swprintf.c
|
|
*
|
|
* Copyright (C) 2017 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <wchar.h>
|
|
#include "libc.h"
|
|
|
|
#include <nuttx/streams.h>
|
|
|
|
#ifdef CONFIG_LIBC_WCHAR
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* swprintf
|
|
****************************************************************************/
|
|
|
|
int swprintf(FAR wchar_t *buf, size_t maxlen, FAR const wchar_t *fmt, ...)
|
|
{
|
|
struct lib_memoutstream_s memoutstream;
|
|
va_list ap;
|
|
int n;
|
|
|
|
/* Initialize a memory stream to write to the buffer */
|
|
|
|
lib_memoutstream((FAR struct lib_memoutstream_s *)&memoutstream,
|
|
(FAR char *) buf, LIB_BUFLEN_UNKNOWN);
|
|
|
|
/* Then let lib_vsprintf do the real work */
|
|
|
|
va_start(ap, fmt);
|
|
n = lib_vsprintf((FAR struct lib_outstream_s *)&memoutstream.public,
|
|
(FAR const char *)fmt, ap);
|
|
va_end(ap);
|
|
|
|
return n;
|
|
}
|
|
|
|
#endif /* CONFIG_LIBC_WCHAR */
|