main.cc

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#include <getopt.h>

#include "config.h"
#include "stage.hh"
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;
}