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/* log.h
* (c) Jonas Gunz, 2019
* License: MIT
* */
#pragma once
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <time.h>
#include <fcntl.h>
#include <unistd.h>
#define _LOG_ERRNO 1
#define _LOG_ERROR 2
#define _LOG_WARNING 3
#define _LOG_NOTE 4
#define _LOG_DEBUG 5
extern unsigned int log_loglevel;
extern int log_fd;
extern const char* log_loglevel_str[6];
#define LOGPRINTF(l,...) {\
if((l) <= log_loglevel){\
time_t current = time (NULL);\
struct tm *tma = localtime(¤t);\
char* date = asctime(tma);\
date[strlen(date) - 1] = '\0';\
printf("[%s] %s: ", date, log_loglevel_str[(l)]);\
if((l) == _LOG_ERRNO)\
printf("%s: ", strerror(errno));\
if((l) == _LOG_DEBUG)\
printf("%s:%d: ", __FILE__, __LINE__);\
printf(__VA_ARGS__);\
printf("\n");\
fsync(STDOUT_FILENO);\
}\
}
/*
* DEBUG Wrapper around LOGPRINTF wich is only compiled in in
* _DEBUG mode for performance
*/
#ifdef _DEBUG
#define DEBUG(...) { LOGPRINTF(_LOG_DEBUG, __VA_ARGS__); }
#else
#define DEBUG(...) { }
#endif
/**
* Opens logfile, writes filedes to _fd
* */
int log_init_file(char* _file, unsigned int _verbosity);
/**
* Configures LOG macros for stdout
*/
int log_init_stdout(unsigned int _verbosity);
int log_close();
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