using System;

using System.IO;

using log4net;

using log4net.Config;

namespace ArithmeticCoding.Console

{

static class Program

{

private static readonly ILog Log = LogManager.GetLogger(typeof(Program));

static void Main(string[] args)

{

try

{

SetupLogging();

if (args.Length != 3)

{

ShowHelp();

return;

}

switch (args[0])

{

case "-c":

case "c":

Compress(args[1], args[2]);

break;

case "-d":

case "d":

Decompress(args[1], args[2]);

break;

default:

ShowHelp();

break;

}

}

catch (Exception e)

{

Log.Error(e);

System.Console.WriteLine(e.Message);

}

}

private static void SetupLogging()

{

XmlConfigurator.Configure(new FileInfo("log4net.config"));

}

private static void ShowHelp()

{

string fileName = Path.GetFileName(Environment.GetCommandLineArgs()[0]);

System.Console.WriteLine("Usage: {0} -c input output", fileName);

System.Console.WriteLine(" {0} -d input output", fileName);

System.Console.WriteLine();

System.Console.WriteLine("Use -c to compress input into output.");

System.Console.WriteLine("Use -d to decompress input into output.");

System.Console.WriteLine("Input and output are paths to the corresponding files.");

}

private static void Compress(string inputFile, string outputFile)

{

ArithmeticCoding.Compress(inputFile, outputFile);

}

private static void Decompress(string inputFile, string outputFile)

{

ArithmeticCoding.Decompress(inputFile, outputFile);

}

}

}