int main()

in zlib/contrib/untgz/untgz.c [599:667]

• 58 lines of code
• 14 McCabe index (conditional complexity)

int main(int argc,char **argv)
{
    int         action = TGZ_EXTRACT;
    int         arg = 1;
    char        *TGZfile;
    gzFile      f;

    prog = strrchr(argv[0],'\\');
    if (prog == NULL)
      {
        prog = strrchr(argv[0],'/');
        if (prog == NULL)
          {
            prog = strrchr(argv[0],':');
            if (prog == NULL)
              prog = argv[0];
            else
              prog++;
          }
        else
          prog++;
      }
    else
      prog++;

    if (argc == 1)
      help(0);

    if (strcmp(argv[arg],"-l") == 0)
      {
        action = TGZ_LIST;
        if (argc == ++arg)
          help(0);
      }
    else if (strcmp(argv[arg],"-h") == 0)
      {
        help(0);
      }

    if ((TGZfile = TGZfname(argv[arg])) == NULL)
      TGZnotfound(argv[arg]);

    ++arg;
    if ((action == TGZ_LIST) && (arg != argc))
      help(1);

/*
 *  Process the TGZ file
 */
    switch(action)
      {
      case TGZ_LIST:
      case TGZ_EXTRACT:
        f = gzopen(TGZfile,"rb");
        if (f == NULL)
          {
            fprintf(stderr,"%s: Couldn't gzopen %s\n",prog,TGZfile);
            return 1;
          }
        exit(tar(f, action, arg, argc, argv));
      break;

      default:
        error("Unknown option");
        exit(1);
      }

    return 0;
}