Bridge_Exercise.cpp

Go to the documentation of this file.

 
 
#include <iostream>
 
#include "helpers/formatstring.h"
 
#include "Bridge_Exercise.h"
#include "Bridge_Logger.h"
 
namespace // Anonymous
{
    using namespace DesignPatternExamples_cpp;
 
    void _Bridge_Exercise_Demonstrate_Logging(
        Logger& logger, std::string loggerType)
    {
        std::string output;
        output = Helpers::formatstring("Starting log to %s example", loggerType.c_str());
        logger.LogTrace(output);
 
        logger.LogInfo("An example of an informational line");
        logger.LogError("An example of an error log entry");
 
        output = Helpers::formatstring("Done with log to %s example", loggerType.c_str());
        logger.LogTrace(output);
    }
 
} // end anonymous namespace
 
 
namespace DesignPatternExamples_cpp
{
 
    // ! [Using Bridge in C++]
    void Bridge_Exercise()
    {
        std::cout << std::endl;
        std::cout << "Bridge Exercise" << std::endl;
 
        // Note: Use local contexts to automatically close the various loggers
        // when the loggers go out of scope.
        {
            Logger logger("Bridge.log"); // Logger::LoggerTypes::ToFile type
            std::cout << "  Example of writing to a log file..." << std::endl;
            _Bridge_Exercise_Demonstrate_Logging(logger, "file");
        }
 
        {
            Logger logger(Logger::LoggerTypes::ToConsole);
            std::cout << "  Example of writing to the console..." << std::endl;
            _Bridge_Exercise_Demonstrate_Logging(logger, "console");
        }
 
        {
            Logger logger(Logger::LoggerTypes::ToNull);
            std::cout << "  Example of writing to a Null object (no output)..."
                << std::endl;
            // Note: The resulting log lines will not be shown anywhere.
            _Bridge_Exercise_Demonstrate_Logging(logger, "null");
        }
 
        std::cout << "  Done." << std::endl;
    }
    // ! [Using Bridge in C++]
 
} // end namespace