#include <time.h>

#include <stdio.h>

#include <stdarg.h>

static void log_time(FILE *file) {

    time_t timer;

    char buffer[25];

    struct tm* tm_info;

    time(&timer);

    tm_info = localtime(&timer);

    strftime(buffer, 25, "%Y-%m-%d %H:%M:%S", tm_info);

    fprintf(file, "%s", buffer);

}

static void flib_vflog(FILE *file, const char *prefix, const char *fmt, va_list args) {

	log_time(file);

	fprintf(file, " [%s]", prefix);

	vfprintf(file, fmt, args);

	fprintf(file, "\n");

}

void flib_log_e(const char *fmt, ...) {

	va_list argp;

	va_start(argp, fmt);

	flib_vflog(stderr, "E", fmt, argp);

	va_end(argp);

}

void flib_log_w(const char *fmt, ...) {

	va_list argp;

	va_start(argp, fmt);

	flib_vflog(stdout, "W", fmt, argp);

	va_end(argp);

}

void flib_log_i(const char *fmt, ...) {

	va_list argp;

	va_start(argp, fmt);

	flib_vflog(stdout, "I", fmt, argp);

	va_end(argp);

}