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/****************************************************************************
* libc/stdio/lib_fputs.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 <nuttx/config.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <nuttx/arch.h>
#include "lib_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Type Declarations
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Global Function Prototypes
****************************************************************************/
/****************************************************************************
* Global Constant Data
****************************************************************************/
/****************************************************************************
* Global Variables
****************************************************************************/
/****************************************************************************
* Private Constant Data
****************************************************************************/
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: fputs
*
* Description:
* fputs() writes the string s to stream, without its trailing '\0'.
*
****************************************************************************/
#if defined(CONFIG_ARCH_ROMGETC)
int fputs(FAR const char *s, FAR FILE *stream)
{
int nput;
int ret;
char ch;
/* Make sure that a string was provided. */
#ifdef CONFIG_DEBUG /* Most parameter checking is disabled if DEBUG is off */
if (!s)
{
set_errno(EINVAL);
return EOF;
}
#endif
/* Write the string. Loop until the null terminator is encountered */
for (nput = 0, ch = up_romgetc(s); ch; nput++, s++, ch = up_romgetc(s))
{
/* Write the next character to the stream buffer */
ret = lib_fwrite(&ch, 1, stream);
if (ret <= 0)
{
return EOF;
}
/* Flush the buffer if a newline was written to the buffer */
#ifdef CONFIG_STDIO_LINEBUFFER
if (ch == '\n')
{
ret = lib_fflush(stream, true);
if (ret < 0)
{
return EOF;
}
}
#endif
}
return nput;
}
#elif defined(CONFIG_STDIO_LINEBUFFER)
int fputs(FAR const char *s, FAR FILE *stream)
{
int nput;
int ret;
/* Make sure that a string was provided. */
#ifdef CONFIG_DEBUG /* Most parameter checking is disabled if DEBUG is off */
if (!s)
{
set_errno(EINVAL);
return EOF;
}
#endif
/* Write the string. Loop until the null terminator is encountered */
for (nput = 0; *s; nput++, s++)
{
/* Write the next character to the stream buffer */
ret = lib_fwrite(s, 1, stream);
if (ret <= 0)
{
return EOF;
}
/* Flush the buffer if a newline was written to the buffer */
if (*s == '\n')
{
ret = lib_fflush(stream, true);
if (ret < 0)
{
return EOF;
}
}
}
return nput;
}
#else
int fputs(FAR const char *s, FAR FILE *stream)
{
int ntowrite;
int nput;
/* Make sure that a string was provided. */
#ifdef CONFIG_DEBUG /* Most parameter checking is disabled if DEBUG is off */
if (!s)
{
set_errno(EINVAL);
return EOF;
}
#endif
/* Get the length of the string. */
ntowrite = strlen(s);
if (ntowrite == 0)
{
return 0;
}
/* Write the string */
nput = lib_fwrite(s, ntowrite, stream);
if (nput < 0)
{
return EOF;
}
return nput;
}
#endif
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