px4-firmware/nuttx/lib/stdio/lib_lowprintf.c

129 lines
4.9 KiB
C

/****************************************************************************
* lib/stdio/lib_lowprintf.c
*
* Copyright (C) 2007-2009, 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <debug.h>
#include "lib_internal.h"
/* This interface can only be used from within the kernel */
#if !defined(CONFIG_NUTTX_KERNEL) || defined(__KERNEL__)
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Type Declarations
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Global Function Prototypes
****************************************************************************/
/****************************************************************************
* Global Constant Data
****************************************************************************/
/****************************************************************************
* Global Variables
****************************************************************************/
/****************************************************************************
* Private Constant Data
****************************************************************************/
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: lib_lowvprintf
****************************************************************************/
#if defined(CONFIG_ARCH_LOWPUTC) || defined(CONFIG_SYSLOG)
int lib_lowvprintf(const char *fmt, va_list ap)
{
struct lib_outstream_s stream;
/* Wrap the stdout in a stream object and let lib_vsprintf do the work. */
#ifdef CONFIG_SYSLOG
lib_syslogstream((FAR struct lib_outstream_s *)&stream);
#else
lib_lowoutstream((FAR struct lib_outstream_s *)&stream);
#endif
return lib_vsprintf((FAR struct lib_outstream_s *)&stream, fmt, ap);
}
/****************************************************************************
* Name: lib_lowprintf
****************************************************************************/
int lib_lowprintf(const char *fmt, ...)
{
va_list ap;
int ret;
#ifdef CONFIG_DEBUG_ENABLE
ret = 0;
if (g_dbgenable)
#endif
{
va_start(ap, fmt);
ret = lib_lowvprintf(fmt, ap);
va_end(ap);
}
return ret;
}
#endif /* CONFIG_ARCH_LOWPUTC || CONFIG_SYSLOG */
#endif /* __KERNEL__ */