/*
   Copyright 2010-2010
   National Instruments Corporation.
   All rights reserved.
*/

#include <boost/program_options/options_description.hpp>
#include <boost/program_options/parsers.hpp>
#include <boost/program_options/variables_map.hpp>
#include <boost/system/system_error.hpp>
#include <iostream>
#include <vector>

int main()
{
   boost::system::error_code temp;
   boost::system::system_error err(temp);
   std::cout<<err.what()<<"\n";

   namespace po = boost::program_options;
   // Declare the supported options.
   po::options_description desc("Allowed options");
   desc.add_options()
       ("help", "produce help message")
       ("compression", po::value<int>(), "set compression level")
   ;

   po::variables_map vm;
   char *argv[]={"ThisProg","compression=1"};
   po::store(po::parse_command_line(1, argv, desc), vm);
   po::notify(vm);

   if (vm.count("help")) {
      std::cout << desc << "\n";
      return 1;
   }

   if (vm.count("compression")) {
      std::cout << "Compression level was set to "
           << vm["compression"].as<int>()
           << ".\n";
   } else {
      std::cout << "Compression level was not set.\n";
   }

   return 0;
}