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/*
* log.h - syslog friendly error and debug printing macros
* Copyright (C) 2014-2019 Vivien Didelot
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef LOG_H
#define LOG_H
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#define SYSLOG_CRIT "<2>"
#define SYSLOG_ERR "<3>"
#define SYSLOG_NOTICE "<5>"
#define SYSLOG_DEBUG "<7>"
extern enum {
LOG_FATAL,
LOG_ERROR,
LOG_TRACE,
LOG_DEBUG,
} log_level;
static inline void log_printf(int lvl, const char *fmt, ...)
{
va_list ap;
if (lvl <= LOG_ERROR || lvl <= log_level) {
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
}
}
#define fatal(fmt, ...) \
log_printf(LOG_FATAL, SYSLOG_CRIT fmt "\n", ##__VA_ARGS__)
#define error(fmt, ...) \
log_printf(LOG_ERROR, SYSLOG_ERR fmt "\n", ##__VA_ARGS__)
#define trace(fmt, ...) \
log_printf(LOG_TRACE, SYSLOG_NOTICE fmt "\n", ##__VA_ARGS__)
#define debug(fmt, ...) \
log_printf(LOG_DEBUG, SYSLOG_DEBUG "%s:%s:%d: " fmt "\n", \
__FILE__, __func__, __LINE__, ##__VA_ARGS__)
#endif /* LOG_H */
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