DDiff.cs :  » Installers-Generators » WiX » Microsoft » Deployment » Samples » DDiff » C# / CSharp Open Source

using System;
using System.IO;
using System.Text;

namespace Microsoft.Deployment.Samples.DDiff{
  public class DDiff
  {
        public static void Usage(TextWriter w)
        {
      w.WriteLine("Usage: DDiff target1 target2 [options]");
      w.WriteLine("Example: DDiff d:\\dir1 d:\\dir2");
      w.WriteLine("Example: DDiff patch1.msp patch2.msp /patchtarget target.msi");
            w.WriteLine();
            w.WriteLine("Options:");
            w.WriteLine("  /o [filename]     Output results to text file (UTF8)");
            w.WriteLine("  /p [package.msi]  Diff patches relative to target MSI");
        }

    public static int Main(string[] args)
    {
      if(args.Length < 2)
      {
                Usage(Console.Out);
        return -1;
      }

      string input1 = args[0];
      string input2 = args[1];
      string[] options = new string[args.Length - 2];
      for(int i = 0; i < options.Length; i++) options[i] = args[i+2];

      TextWriter output = Console.Out;

      for(int i = 0; i < options.Length - 1; i++)
      {
        switch(options[i].ToLower())
        {
          case "/o": goto case "-output";
          case "-o": goto case "-output";
          case "/output": goto case "-output";
          case "-output": output = new StreamWriter(options[i+1], false, Encoding.UTF8); break;
        }
      }

      IDiffEngineFactory diffFactory = new BestQualityDiffEngineFactory(new IDiffEngine[]
      {
        new DirectoryDiffEngine(),
        new FileDiffEngine(),
        new VersionedFileDiffEngine(),
        new TextFileDiffEngine(),
        new MsiDiffEngine(),
        new CabDiffEngine(),
        new MspDiffEngine(),
      });

      IDiffEngine diffEngine = diffFactory.GetDiffEngine(input1, input2, options);
      if(diffEngine != null)
      {
        bool different = diffEngine.GetDiff(input1, input2, options, output, "", diffFactory);
        return different ? 1 : 0;
      }
      else
      {
        Console.Error.WriteLine("Dont know how to diff those inputs.");
        return -1;
      }
    }
  }
}