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/* estream-printf.h - Versatile C-99 compliant printf formatting.
* Copyright (C) 2007 g10 Code GmbH
*
* This file is part of Libestream.
*
* Libestream is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License,
* or (at your option) any later version.
*
* Libestream is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Libestream; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef ESTREAM_PRINTF_H
#define ESTREAM_PRINTF_H
#include <stdarg.h>
#include <stdio.h>
/* To use this file with libraries the following macro is useful:
#define _ESTREAM_EXT_SYM_PREFIX _foo_
This prefixes all external symbols with "_foo_".
For the implementation of the code (estream-printf.c) the following
macros may be used to tune the implementation for certain systems:
#define _ESTREAM_PRINTF_MALLOC foo_malloc
#define _ESTREAM_PRINTF_FREE foo_free
Make estream_asprintf and estream_vasprintf use foo_malloc and
foo_free instead of the standard malloc and free functions to
allocate the memory returned to the caller.
#define _ESTREAM_PRINTF_EXTRA_INCLUDE "foo.h"
This includes the file "foo.h" which may provide prototypes for
the custom memory allocation functions.
*/
#ifdef _ESTREAM_EXT_SYM_PREFIX
#ifndef _ESTREAM_PREFIX
#define _ESTREAM_PREFIX1(x,y) x ## y
#define _ESTREAM_PREFIX2(x,y) _ESTREAM_PREFIX1(x,y)
#define _ESTREAM_PREFIX(x) _ESTREAM_PREFIX2(_ESTREAM_EXT_SYM_PREFIX,x)
#endif /*_ESTREAM_PREFIX*/
#define estream_printf_out_t _ESTREAM_PREFIX(estream_printf_out_t)
#define estream_format _ESTREAM_PREFIX(estream_format)
#define estream_printf _ESTREAM_PREFIX(estream_printf)
#define estream_fprintf _ESTREAM_PREFIX(estream_fprintf)
#define estream_vfprintf _ESTREAM_PREFIX(estream_vfprintf)
#define estream_snprintf _ESTREAM_PREFIX(estream_snprintf)
#define estream_vsnprintf _ESTREAM_PREFIX(estream_vsnprintf)
#define estream_asprintf _ESTREAM_PREFIX(estream_asprintf)
#define estream_vasprintf _ESTREAM_PREFIX(estream_vasprintf)
#endif /*_ESTREAM_EXT_SYM_PREFIX*/
#ifndef _ESTREAM_GCC_A_PRINTF
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5 )
# define _ESTREAM_GCC_A_PRINTF( f, a ) __attribute__ ((format (printf,f,a)))
#else
# define _ESTREAM_GCC_A_PRINTF( f, a )
#endif
#endif /*_ESTREAM_GCC_A_PRINTF*/
#ifdef __cplusplus
extern "C"
{
#if 0
}
#endif
#endif
typedef int (*estream_printf_out_t)
(void *outfncarg, const char *buf, size_t buflen);
int estream_format (estream_printf_out_t outfnc, void *outfncarg,
const char *format, va_list vaargs)
_ESTREAM_GCC_A_PRINTF(3,0);
int estream_printf (const char *format, ...)
_ESTREAM_GCC_A_PRINTF(1,2);
int estream_fprintf (FILE *fp, const char *format, ... )
_ESTREAM_GCC_A_PRINTF(2,3);
int estream_vfprintf (FILE *fp, const char *format, va_list arg_ptr)
_ESTREAM_GCC_A_PRINTF(2,0);
int estream_snprintf (char *buf, size_t bufsize, const char *format, ...)
_ESTREAM_GCC_A_PRINTF(3,4);
int estream_vsnprintf (char *buf,size_t bufsize,
const char *format, va_list arg_ptr)
_ESTREAM_GCC_A_PRINTF(3,0);
int estream_asprintf (char **bufp, const char *format, ...)
_ESTREAM_GCC_A_PRINTF(2,3);
int estream_vasprintf (char **bufp, const char *format, va_list arg_ptr)
_ESTREAM_GCC_A_PRINTF(2,0);
#ifdef __cplusplus
}
#endif
#endif /*ESTREAM_PRINTF_H*/
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