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  1. /**
  2.  * @module imgsynth
  3.  * @author Manuel Mausz, 0728348
  4.  * @brief  imgsynth reads a scriptfile given as commandline option
  5.  *         and executes all known function inside.
  6.  *         On error (e.g. unknown function) the program will terminate
  7.  * @date   17.04.2009
  8.  * @par Exercise
  9.  *      1
  10.  */
  11.  
  12. #include <iostream>
  13. #include <boost/program_options.hpp>
  14. #include "cscriptparser.h"
  15.  
  16. using namespace std;
  17. namespace po = boost::program_options;
  18.  
  19. /**
  20.  * @func   main
  21.  * @brief  program entry point
  22.  * @param  argc  standard parameter of main
  23.  * @param  argv  standard parameter of main
  24.  * @return 0 on success, not 0 otherwise
  25.  * @globalvars none
  26.  * @exception  none
  27.  * @conditions none
  28.  *
  29.  * setup commandline options, parse them and pass scriptfile to scriptparser
  30.  * instance. On error print error message to stderr.
  31.  * Unknown commandline options will print a usage message.
  32.  */
  33. int main(int argc, char* argv[])
  34. {
  35.   string me(argv[0]);
  36.  
  37.   /* define commandline options */
  38.   po::options_description desc("Allowed options");
  39.   desc.add_options()
  40.     ("help,h", "this help message")
  41.     ("input,i", po::value<string>(), "input scriptfile");
  42.  
  43.   /* parse commandline options */
  44.   po::variables_map vm;
  45.   try
  46.   {
  47.     po::store(po::parse_command_line(argc, argv, desc), vm);
  48.     po::notify(vm);
  49.   }
  50.   catch(po::error& ex)
  51.   {
  52.     cerr << "Error: " << ex.what() << endl;
  53.   }
  54.  
  55.   /* print usage upon request or missing params */
  56.   if (vm.count("help") || !vm.count("input"))
  57.   {
  58.     cout << "Usage: " << me << " -i <scriptfile>" << endl;
  59.     cout << desc << endl;
  60.     return 0;
  61.   }
  62.  
  63.   CScriptparser parser(vm["input"].as<string>());
  64.   try
  65.   {
  66.     parser.parse();
  67.   }
  68.   catch(CScriptparser::ParserError& ex)
  69.   {
  70.     cerr << me << ": Error while processing scriptfile: " << ex.what() << endl;
  71.     if (!ex.getLine().empty())
  72.       cerr << "Scriptline: '" << ex.getLine() << "'" << endl;
  73.     return 1;
  74.   }
  75.   catch(exception& ex)
  76.   {
  77.     cerr << me << ": Unexpected exception: " << ex.what() << endl;
  78.     return 1;
  79.   }
  80.  
  81.   return 0;
  82. }
  83.  
  84. /* vim: set et sw=2 ts=2: */
  85.