enable multiple << in one line

Logger.hpp

@@ -1,9 +1,11 @@
 #ifndef LOGGER_HPP
 #define LOGGER_HPP
 
-#include <ostream>
 #include <ctime>
 
+#include <ostream>
+#include <sstream>
+
 #include "Singleton_DCLP.hpp"
 
 class Logger : public Singleton_DCLP<Logger>
@@ -11,22 +13,23 @@ class Logger : public Singleton_DCLP<Logger>
 public:
 	class Endl {};
 
-	Logger() : m_os(nullptr), m_print_time_stamp(false) {}
+	Logger() : m_os(nullptr), m_buffer(), m_print_time_stamp(false) {}
 
 	void setStream(std::ostream* os) { m_os = os; }
-	std::ostream* getStream() { return m_os; }
 
 	void setPrintTimeStamp(bool b = true) { m_print_time_stamp = b; }
 
 	template <class T>
 	Logger &operator<<(const T &x) {
-		decorate();
-		*m_os << x;
+		m_buffer << x;
 		return *this;
 	}
 
 	Logger& operator<<(const Logger::Endl& e) {
+		decorate();
+		*m_os << m_buffer.str();
 		*m_os << std::endl;
+		m_buffer.str("");
 		return *this;
 	}
 
@@ -43,6 +46,7 @@ private:
 
 	// ostreams are not copyable, hence storing a pointer only
 	std::ostream* m_os;
+	std::ostringstream m_buffer;
 	bool m_print_time_stamp;
 };