print owner of process

ArgParser.hpp

@@ -50,11 +50,14 @@ public:
 				case 'c':
 					m_print_to_console = true;
 					break;
+				case 'f':
+					m_logFile = std::string(optarg);
+					break;
 				case 't':
 					m_timestamp = true;
 					break;
-				case 'f':
+				case 'u':
-					m_logFile = std::string(optarg);
+					m_username = true;
 					break;
 				case 'h':
 					printUsage();

Logger.hpp

@@ -1,6 +1,10 @@
 #ifndef LOGGER_HPP
 #define LOGGER_HPP
 
+
+#include <sys/types.h>
+#include <pwd.h>
+
 #include <ctime>
 
 #include <ostream>
@@ -13,11 +17,16 @@ class Logger : public Singleton_DCLP<Logger>
 public:
 	class Endl {};
 
-	Logger() : m_os(nullptr), m_buffer(), m_print_time_stamp(false) {}
+	Logger() :
+		m_os(nullptr),
+		m_buffer(),
+		m_print_time_stamp(false),
+		m_print_user_name(false) {}
 
 	void setStream(std::ostream* os) { m_os = os; }
 
 	void setPrintTimeStamp(bool b = true) { m_print_time_stamp = b; }
+	void setPrintUserName(bool b = true) { m_print_user_name = b; }
 
 	template <class T>
 	Logger &operator<<(const T &x) {
@@ -42,12 +51,22 @@ private:
 			s.pop_back(); // removing trailing \n
 			*m_os << s << " ";
 		}
+		if (m_print_user_name) {
+#ifdef linux
+			const uid_t uid = getuid();
+			const struct passwd* p = getpwuid(uid);
+			*m_os << p->pw_name << " ";
+#elif _win32
+			*m_os << "n00b ";
+#endif
+		}
 	}
 
 	// ostreams are not copyable, hence storing a pointer only
 	std::ostream* m_os;
 	std::ostringstream m_buffer;
 	bool m_print_time_stamp;
+	bool m_print_user_name;
 };
 
 #define LOG *Logger::getInstance()

main.cpp

@@ -26,6 +26,7 @@ int main(int argc, char* argv[])
 	}
 
 	Logger::getInstance()->setPrintTimeStamp(argparser.printTimestamp());
+	Logger::getInstance()->setPrintUserName(argparser.printUsername());
 
 	std::string line;
 	while (std::getline(std::cin, line))