Logger

#ifndef GE_LOGGER_H
#define GE_LOGGER_H

#include <algorithm>
#include <string>
#include <fstream>
#include <iostream>

namespace ge
{
    class Logger
    {
        public:
            Logger() = delete;
            Logger( const Logger& logger ) = delete;
            Logger( const std::string& filename, bool theStandardOutput = true );
            ~Logger();

            void Log( const std::string& str );

            #define stream(val) \
                file << ( val ); \
                if ( standardOutput ) \
                { \
                    std::cout << ( val ); \
                }

            // http://en.wikipedia.org/wiki/Variadic_templates
            template< typename T, typename... Args >
            void Log( const std::string& str, T value, Args... args )
            {
                for ( auto it = str.begin(); it != str.end(); ++it )
                {
                    size_t dist = std::distance( str.begin(), it );

                    char cc = ( * it );
                    if ( dist >= str.size() - 1 )
                    {
                        stream( cc );
                        break;
                    }

                    char nc = ( * ( it + 1 ) );
                    if ( cc == '%' and nc != '%' )
                    {
                        stream( value );
                        Log( str.substr( dist + 1 ), args... );
                        return;
                    }

                    stream( cc );
                }
            }

            #undef stream

        private:
            std::fstream file;
            bool standardOutput;
    };
}

#endif // GE_LOGGER_H