gistfile1.c

 else if (!strncmp(opt,"-use-the-force-luke",19))
	    { char *s=strchr (opt,'='),*o;

		if (s == NULL)	/* backward compatibility */
		    no_tty_check = 1;
		else
		{   s++;
		    if (strstr(s,"tty"))	no_tty_check = 1;
		    if (strstr(s,"dummy"))	test_write   = 1;
		    if (strstr(s,"notray"))	no_reload    = 1;
		    if (strstr(s,"noload"))	no_reload    = -1;
		    if (strstr(s,"wrvfy"))	wrvfy        = 1;
		    if (strstr(s,"4gms"))	no_4gb_check = 1;
		    if (strstr(s,"noopc"))	no_opc       = 1;
		    if (strstr(s,"moi"))
		    {	quiet=-1; mkisofs_argv[mkisofs_argc++] = "-quiet";   }
		    if ((o=strstr(s,"dao")))
		    {	dvd_compat  += 256;
			/*  vvvvvvvvvvv tracksize option takes precedence! */
			if (dao_size==0 && (o[3]==':' || o[3]=='='))
			{   dao_size=strtol(o+4,0,0);
			    if (dao_size<=0)
				fprintf (stderr,":-( insane dao%c%d option\n",
						o[3],dao_size),
				exit(FATAL_START(EINVAL));
			}
		    }
		    if ((o=strstr(s,"tracksize")))
		    {	if (o[9]==':' || o[9]=='=')
			{   dao_size=strtol(o+10,0,0);
			    if (dao_size<=0)
				fprintf (stderr,":-( insane tracksize%c%d option\n",
						o[9],dao_size),
				exit(FATAL_START(EINVAL));
			}
		    }
		    if ((o=strstr(s,"break")))
		    {	if (o[5]==':' || o[5]=='=')
			{   layer_break=strtol(o+6,0,0);
			    if (layer_break<=0 || layer_break%16)
				fprintf (stderr,":-( insane break%c%d option\n",
						o[5],layer_break),
				exit(FATAL_START(EINVAL));
			}
		    }
		    if ((o=strstr(s,"seek")) && next_session<0)
		    {	if (o[4]==':' || o[4]=='=')
			{   next_session=strtol(o+5,0,0);
			    if (next_session<0 || next_session%16)
				fprintf (stderr,":-( insane seek%c%d option\n",
						o[4],next_session),
				exit(FATAL_START(EINVAL));
			}
		    }
		    if ((o=strstr(s,"bufsize")))
		    {	if (o[7]==':' || o[7]=='=')
			{   the_buffer_size=strtol(o+8,&o,0);
			    if (*o=='M' || *o=='m')
				the_buffer_size*=1024*1024;
			    else if (*o=='K' || *o=='k')
				the_buffer_size*=1024;
			}
		    }
		    if ((o=strstr(s,"spare")))
		    {	spare=1;
		    	if (o[5]==':' || o[5]=='=')
			{   if      (!strncmp(o+6,"none",4))	spare=-1;
			    else if (!strncmp(o+6,"min",3))	spare=0;
			}
		    }
		}
		continue;
	    }