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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* 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. *
* *
* 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. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifndef ERROR_H
#define ERROR_H
#include "replacements.h"
#include "command.h"
#include <stdarg.h>
/* logging priorities
* LOG_USER - user messages. Could be anything from information
* to progress messags. These messages do not represent
* incorrect or unexpected behaviour, just normal execution.
* LOG_ERROR - fatal errors, that are likely to cause program abort
* LOG_WARNING - non-fatal errors, that may be resolved later
* LOG_INFO - state information, etc.
* LOG_DEBUG - debug statements, execution trace
*/
enum log_levels
{
LOG_OUTPUT = -2,
LOG_USER = -1,
LOG_ERROR = 0,
LOG_WARNING = 1,
LOG_INFO = 2,
LOG_DEBUG = 3
};
extern void log_printf(enum log_levels level, const char *file, int line,
const char *function, const char *format, ...)
__attribute__ ((format (printf, 5, 6)));
extern void log_printfnl(enum log_levels level, const char *file, int line,
const char *function, const char *format, ...)
__attribute__ ((format (printf, 5, 6)));
extern int log_register_commands(struct command_context_s *cmd_ctx);
extern int log_init(struct command_context_s *cmd_ctx);
extern int set_log_output(struct command_context_s *cmd_ctx, FILE *output);
typedef void (*log_callback_fn)(void *priv, const char *file, int line,
const char *function, const char *format, va_list args);
typedef struct log_callback_s
{
log_callback_fn fn;
void *priv;
struct log_callback_s *next;
} log_callback_t;
extern int log_add_callback(log_callback_fn fn, void *priv);
extern int log_remove_callback(log_callback_fn fn, void *priv);
char *alloc_printf(const char *fmt, va_list ap);
extern int debug_level;
/* Avoid fn call and building parameter list if we're not outputting the information.
* Matters on feeble CPUs for DEBUG/INFO statements that are involved frequently */
#define DEBUG(expr ...) \
do { if (debug_level >= LOG_DEBUG) \
log_printfnl (LOG_DEBUG, __FILE__, __LINE__, __FUNCTION__, expr); \
} while(0)
#define INFO(expr ...) \
do { if (debug_level >= LOG_INFO) \
log_printfnl (LOG_INFO, __FILE__, __LINE__, __FUNCTION__, expr); \
} while(0)
#define WARNING(expr ...) \
do { \
log_printfnl (LOG_WARNING, __FILE__, __LINE__, __FUNCTION__, expr); \
} while(0)
#define ERROR(expr ...) \
do { \
log_printfnl (LOG_ERROR, __FILE__, __LINE__, __FUNCTION__, expr); \
} while(0)
#define USER(expr ...) \
do { \
log_printfnl (LOG_USER, __FILE__, __LINE__, __FUNCTION__, expr); \
} while(0)
#define USER_SAMELINE(expr ...) \
do { \
log_printf (LOG_USER, __FILE__, __LINE__, __FUNCTION__, expr); \
} while(0)
#define OUTPUT(expr ...) \
do { \
log_printfnl (LOG_OUTPUT, __FILE__, __LINE__, __FUNCTION__, expr); \
} while(0)
/* general failures
* error codes < 100
*/
#define ERROR_OK (0)
#define ERROR_INVALID_ARGUMENTS (-1)
#define ERROR_NO_CONFIG_FILE (-2)
#define ERROR_BUF_TOO_SMALL (-3)
#endif /* LOG_H */
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