131 lines
4.8 KiB
C
131 lines
4.8 KiB
C
/****************************************************************************
|
|
* libc/stdio/lib_puts.c
|
|
*
|
|
* Copyright (C) 2007, 2008, 2011-2012 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Compilation Switches
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <stdio.h>
|
|
#include "lib_internal.h"
|
|
|
|
/****************************************************************************
|
|
* Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Type Declarations
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Function Prototypes
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Global Function Prototypes
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Constant Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Variables
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Constant Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Variables
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: puts
|
|
*
|
|
* Description:
|
|
* puts() writes the string s and a trailing newline to stdout.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int puts(FAR const char *s)
|
|
{
|
|
FILE *stream = stdout;
|
|
int nwritten;
|
|
int nput = EOF;
|
|
int ret;
|
|
|
|
/* Write the string (the next two steps must be atomic) */
|
|
|
|
lib_take_semaphore(stream);
|
|
|
|
/* Write the string without its trailing '\0' */
|
|
|
|
nwritten = fputs(s, stream);
|
|
if (nwritten > 0)
|
|
{
|
|
/* Followed by a newline */
|
|
|
|
char newline = '\n';
|
|
ret = lib_fwrite(&newline, 1, stream);
|
|
if (ret > 0)
|
|
{
|
|
nput = nwritten + 1;
|
|
|
|
/* Flush the buffer after the newline is output. */
|
|
|
|
#ifdef CONFIG_STDIO_LINEBUFFER
|
|
ret = lib_fflush(stream, true);
|
|
if (ret < 0)
|
|
{
|
|
nput = EOF;
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
lib_give_semaphore(stdout);
|
|
return nput;
|
|
}
|
|
|