logger

描述

一个简单的日志库

API:

#define LOG_DEBUG   1
#define LOG_INFO    2
#define LOG_WARN    3
#define LOG_ERROR   4
		
int logger_init();

void logger_release();

void log_error(const char *format, ...);

void log_warn(const char *format, ...);

void log_info(const char *format, ...);

void log_debug(const char *format, ...);

配置文件（conf/logger.conf）：

#configure file of logger 
#eg: filename=/var/log/logger
filename=/var/log/logger

#log_enable disable 0 | enable 1
log_enable=1
#log_level (LOG_ERROR, LOG_WARN, LOG_INFO, LOG_DEBUG)
#LOG_ERROR 1
#LOG_WARN  2
#LOG_INFO  3
#LOG_DEBUG 4
log_level=1

#default 1M
log_size=1048576

简单例子

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "logger.h"

int main()
{
	if (logger_init()) {
		return -1;	
	}

	log_debug("%s %d", "This is first debug", 1);
	log_info("This is info");
	log_warn("This is warnning");
	log_error("This is error");
	
	logger_release();
	
	return 0;
}
//运行结果
/*2017-06-13 09:26:39 [DEBUG] main():15 This is first debug 1
  2017-06-13 09:26:39 [INFO]: main():16  This is info
  2017-06-13 09:26:39 [WARN]: main():17  This is warnning
  2017-06-13 09:26:39 [ERROR]: main():18 This is error
*/