main.cc

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#include <getopt.h>

#include "stage.hh"
#include "config.h"
using namespace Stg;

const char* USAGE = 
  "USAGE:  stage [options] <worldfile1> [worldfile2 ... worldfileN]\n"
  "Available [options] are:\n"
  "  --clock        : print simulation time peridically on standard output\n"
  "  -c             : equivalent to --clock\n"
  "  --gui          : run without a GUI\n"
  "  -g             : equivalent to --gui\n"
  "  --help         : print this message\n"
  "  --args \"str\"   : define an argument string to be passed to all controllers\n"
  "  -a \"str\"       : equivalent to --args \"str\"\n"
  "  -h             : equivalent to --help\n"
  "  -?             : equivalent to --help";

/* options descriptor */
static struct option longopts[] = {
        { "gui",  optional_argument,   NULL,  'g' },
        { "clock",  optional_argument,   NULL,  'c' },
        { "help",  optional_argument,   NULL,  'h' },
        { "args",  required_argument,   NULL,  'a' },
        { NULL, 0, NULL, 0 }
};

int main( int argc, char* argv[] )
{
  // initialize libstage - call this first
  Stg::Init( &argc, &argv );

  printf( "%s %s ", PROJECT, VERSION );
  
  int ch=0, optindex=0;
  bool usegui = true;
  bool showclock = false;
  
  while ((ch = getopt_long(argc, argv, "cgh?", longopts, &optindex)) != -1)
         {
                switch( ch )
                  {
                  case 0: // long option given
                         printf( "option %s given\n", longopts[optindex].name );
                         break;
                  case 'a':
                         World::ctrlargs = std::string(optarg);
                         break;
                  case 'c': 
                         showclock = true;
                         printf( "[Clock enabled]" );
                         break;
                  case 'g': 
                         usegui = false;
                         printf( "[GUI disabled]" );
                         break;
                  case 'h':  
                  case '?':  
                         puts( USAGE );
                         //                      exit(0);
                         break;
                  default:
                         printf("unhandled option %c\n", ch );
                         puts( USAGE );
                         //exit(0);
                  }
         }
  
  puts("");// end the first start-up line

  // arguments at index [optindex] and later are not options, so they
  // must be world file names
  
  optindex = optind; //points to first non-option
  while( optindex < argc )
         {
                if( optindex > 0 )
                  {      
                         const char* worldfilename = argv[optindex];
                         World* world = ( usegui ? 
                                                                                new WorldGui( 400, 300, worldfilename ) : 
                                                                        new World( worldfilename ) );
                         world->Load( worldfilename );
                         world->ShowClock( showclock );

                         if( ! world->paused ) 
                                world->Start();
                  }
                optindex++;
         }

  World::Run();  
  
  puts( "\n[Stage: done]" );

        return EXIT_SUCCESS;
}