/**
   * This method provides convenient way to parse command line arguments and validate them.
   *
   * @param args Command line arguments array
   * @throws IOException
   */
  public void parseArgs(String[] args) throws IOException {
    CmdLineParser parser = new CmdLineParser(this);

    try {
      // parse the arguments.
      parser.parseArgument(args);

      // Validate arguments
      if (this.blockSize <= 32
          || (!this.direction.equals("push") && !this.direction.equals("pull"))) {
        String errMsg = "";
        if (this.blockSize <= 32) {
          errMsg += "Block size should be larger than 32 bytes.\n";
        }

        if (!this.direction.equals("push") && !this.direction.equals("pull")) {
          errMsg += "Direction must be \"push\" or \"pull\"";
        }
        throw new CmdLineException(parser, errMsg);
      }
    } catch (CmdLineException e) {
      // print error message
      System.err.println(e.getMessage() + "\n");
      System.err.println("java -jar syncclient.jar [options...] arguments...");
      // print the list of available options
      parser.printUsage(System.err);
      System.err.println();

      // print option sample
      System.err.println(" Example: java -jar syncclient.jar" + parser.printExample(ALL));

      System.exit(-1);
    }
  }
  /**
   * Simple test program.
   *
   * @param args
   */
  public static void main(String[] args) {
    EclipseToEGS converter = new EclipseToEGS();
    CmdLineParser parser = new CmdLineParser(converter);

    try {
      parser.parseArgument(args);
      converter.run();
    } catch (CmdLineException e) {
      System.err.println(e.getMessage());
      parser.printUsage(System.err);
    }
  }