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/*
* Logger abstraction backed by callbacks for writing.
*/
/*
* Copyright © 2016-2017 The TokTok team.
* Copyright © 2013 Tox project.
*
* This file is part of Tox, the free peer to peer instant messenger.
*
* Tox 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 3 of the License, or
* (at your option) any later version.
*
* Tox 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 Tox. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef TOXLOGGER_H
#define TOXLOGGER_H
#include <stdint.h>
#ifndef MIN_LOGGER_LEVEL
#define MIN_LOGGER_LEVEL LOG_INFO
#endif
typedef enum {
LOG_TRACE,
LOG_DEBUG,
LOG_INFO,
LOG_WARNING,
LOG_ERROR
} LOGGER_LEVEL;
typedef struct Logger Logger;
typedef void logger_cb(void *context, LOGGER_LEVEL level, const char *file, int line,
const char *func, const char *message, void *userdata);
/**
* Creates a new logger with logging disabled (callback is NULL) by default.
*/
Logger *logger_new(void);
void logger_kill(Logger *log);
/**
* Sets the logger callback. Disables logging if set to NULL.
* The context parameter is passed to the callback as first argument.
*/
void logger_callback_log(Logger *log, logger_cb *function, void *context, void *userdata);
/**
* Main write function. If logging disabled does nothing.
*/
void logger_write(Logger *log, LOGGER_LEVEL level, const char *file, int line, const char *func, const char *format,
...);
#define LOGGER_WRITE(log, level, ...) \
do { \
if (level >= MIN_LOGGER_LEVEL) { \
logger_write(log, level, __FILE__, __LINE__, __func__, __VA_ARGS__); \
} \
} while (0)
/* To log with an logger */
#define LOGGER_TRACE(log, ...) LOGGER_WRITE(log, LOG_TRACE , __VA_ARGS__)
#define LOGGER_DEBUG(log, ...) LOGGER_WRITE(log, LOG_DEBUG , __VA_ARGS__)
#define LOGGER_INFO(log, ...) LOGGER_WRITE(log, LOG_INFO , __VA_ARGS__)
#define LOGGER_WARNING(log, ...) LOGGER_WRITE(log, LOG_WARNING, __VA_ARGS__)
#define LOGGER_ERROR(log, ...) LOGGER_WRITE(log, LOG_ERROR , __VA_ARGS__)
#endif /* TOXLOGGER_H */
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