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/*
* Copyright (C) 2006-2008 Martin Willi
* Hochschule fuer Technik Rapperswil
*
* This program 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. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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.
*
* $Id: printf_hook.h 3749 2008-04-04 11:37:19Z martin $
*/
/**
* @defgroup printf_hook printf_hook
* @{ @ingroup libstrongswan
*/
#ifndef PRINTF_HOOK_H_
#define PRINTF_HOOK_H_
typedef struct printf_hook_t printf_hook_t;
typedef struct printf_hook_functions_t printf_hook_functions_t;
#include <printf.h>
/**
* Printf hook function set.
*
* A printf hook has two functions, one to print the string, one to read
* in the number of arguments. See <printf.h>.
*/
struct printf_hook_functions_t {
/**
* Printf hook print function. This is actually of type "printf_function",
* however glibc does it typedef to function, but uclibc to a pointer.
* So we redefine it here.
*/
int (*print)(FILE *, const struct printf_info *info, const void *const *args);
/**
* Printf hook arginfo function, which is actually of type
* "printf_arginfo_function".
*/
int (*arginfo)(const struct printf_info *info, size_t n, int *argtypes);
};
/**
* Printf handler management.
*/
struct printf_hook_t {
/**
* Register a printf handler.
*
* @param spec printf hook format character
* @param hook hook functions
*/
void (*add_handler)(printf_hook_t *this, char spec,
printf_hook_functions_t hook);
/**
* Destroy a printf_hook instance.
*/
void (*destroy)(printf_hook_t *this);
};
/**
* Create a printf_hook instance.
*/
printf_hook_t *printf_hook_create();
#endif /* PRINTF_HOOK_H_ @}*/
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