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// log.h#ifndef LOG_H_INCLUDED#define LOG_H_INCLUDED#include <string>#include <sstream>#include <fstream>using std::string;enum loglevel {	LOGLEVEL_INFO,	LOGLEVEL_STATUS,	LOGLEVEL_WARN,	LOGLEVEL_ERROR,	LOGLEVEL_CRITICAL};enum logopt {	LOGOPT_USE_FILE = 0x1,	LOGOPT_USE_CONSOLE = 0x2,	LOGOPT_USE_STDOUT = 0x4,	LOGOPT_LOG_TIME = 0x8,	LOGOPT_LOG_LEVEL = 0x10,	LOGOPT_OVERWRITE_FILE = 0x20};class Log {	public:		Log(int, string = "");		~Log();		string log(loglevel, string);		std::string formatLog(loglevel, string);		template<typename T> Log& operator<<(T t);	private:		std::fstream logfile;		std::ostringstream msgStream;		bool usingFile, usingConsole, usingStdout, loggingTime, loggingLevel;};#endif // LOG_H_INCLUDED// log.cpp#include <iostream>#include <ostream>#include <fstream>#include <string>#include <time.h>#include "log.h"using std::string;using std::cout;using std::cerr;Log::Log(int options, string path) {    usingFile = false;    usingConsole = false;    usingStdout = false;    loggingLevel = false;    loggingTime = false;	if(options & LOGOPT_USE_FILE) {		usingFile = true;		if(options & LOGOPT_OVERWRITE_FILE) // Append by default, overwrite if specified.            logfile.open(path.data(), std::fstream::trunc);        else            logfile.open(path.data(), std::fstream::app);	}	if(options & LOGOPT_USE_CONSOLE)		usingConsole = true;	if(options & LOGOPT_USE_STDOUT)		usingStdout = true;	if(options & LOGOPT_LOG_TIME)		loggingTime = true;	if(options & LOGOPT_LOG_LEVEL)		loggingLevel = true;}string Log::formatLog(loglevel level, string message) {    static time_t timer = time(NULL);	string logMessage;	if(loggingTime)		logMessage  = asctime(localtime(&timer));	logMessage += " | ";	if(loggingLevel) {		switch(level) {			case LOGLEVEL_INFO:				break;			case LOGLEVEL_STATUS:				logMessage += "STATUS: ";				break;			case LOGLEVEL_WARN:				logMessage += "WARNING: ";				break;			case LOGLEVEL_ERROR:				logMessage += "ERROR: ";				break;			case LOGLEVEL_CRITICAL:				logMessage += "***CRITICAL***: ";				break;			default:				break;		}	}	logMessage += message;	return message.data();}string Log::log(loglevel level, string message) {    string formatted = formatLog(level, message);	if(usingFile)		logfile << formatted;	//if(usingConsole)		// Output to GUI console - NOT IMPLEMENTED	if(usingStdout) {	    if(level < LOGLEVEL_WARN)            cout << formatted;        else            cerr << formatted;	}	return formatted;}template<typename T> Log& Log::operator<<(T t) {    msgStream << t;    return *this;}Log::~Log() {	if(logfile.is_open())		logfile.close();}