log.h

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#ifndef LOG_H
#define LOG_H
 
#include <stdio.h>
#include <stdarg.h>
#include <stdbool.h>
#include <time.h>
 
#define LOG_VERSION "0.1.0"
 
typedef struct {
    va_list ap;
    const char *fmt;
    const char *file;
    struct tm *time;
    void *udata;
    int line;
    int level;
} Log_Event;
 
typedef void (*log_LogFn)(Log_Event *ev);
typedef void (*log_LockFn)(bool lock, void *udata);
 
enum { LOG_TRACE, LOG_DEBUG, LOG_INFO, LOG_WARN, LOG_ERROR, LOG_FATAL };
 
#define log_trace(...) log_log(LOG_TRACE, __FILE__, __LINE__, __VA_ARGS__)
#define log_debug(...) log_log(LOG_DEBUG, __FILE__, __LINE__, __VA_ARGS__)
#define log_info(...)  log_log(LOG_INFO,  __FILE__, __LINE__, __VA_ARGS__)
#define log_warn(...)  log_log(LOG_WARN,  __FILE__, __LINE__, __VA_ARGS__)
#define log_error(...) log_log(LOG_ERROR, __FILE__, __LINE__, __VA_ARGS__)
#define log_fatal(...) log_log(LOG_FATAL, __FILE__, __LINE__, __VA_ARGS__)
 
const char* log_level_string(int level);
void log_set_lock(log_LockFn fn, void *udata);
void log_set_level(int level);
void log_set_quiet(bool enable);
int log_add_callback(log_LogFn fn, void *udata, int level);
int log_add_fp(FILE *fp, int level);
 
void log_log(int level, const char *file, int line, const char *fmt, ...);
 
#endif