change logger format to include date/time

src/logger.h

@@ -1,5 +1,8 @@
 #ifndef LOGGER_H
 #define LOGGER_H
+#include <ctime>
+#include <iomanip>
+#include <iostream>
 #include <cstring>
 #include <fstream>
 #include <mutex>
@@ -29,7 +32,7 @@ public:
 	void print(int level, const char* message, Args... args) {
 		std::lock_guard<std::mutex> lock(log_mutex);
 		char* prepared;
-		asprintf(&prepared, "[%c] %s\n", logTypeChar(level), message);
+		asprintf(&prepared, "[%s] (%c) %s\n", getTime(), logTypeChar(level), message);
 		char* formatted;
 		asprintf(&formatted, prepared, args...);
 		fprintf(stdout, formatted);
@@ -48,6 +51,18 @@ public:
 private:
 	std::map<int, std::ofstream> logfiles;
 	
+	static const char* getTime() {
+		time_t rawtime;
+		struct tm* timeinfo;
+		
+		time(&rawtime);
+		timeinfo = localtime(&rawtime);
+		
+		static char buffer[20];
+		strftime(buffer, 20, "%y/%m/%d %H:%M:%S", timeinfo);
+		return buffer;
+	}
+	
 	static const char logTypeChar(int level) {
 		switch(level) {
 			default: return ' ';