printf("  -I NN       Use ONLY 2 algorithms, NN and 0.\n");
	printf("  -U FILE     Use FILE to select download location.\n");
	printf("  -E CIPHER   Use CIPHER to encrypt data (LIST  lists available ciphers.)\n");
	printf("  file...     File(s) to (de)compress.  (If none given, use standard input).\n");
	return(0);
}

int dact_blksize_calc(int fsize) {
	if (fsize==0) return(DACT_BLK_SIZE_DEF);
	if (fsize<(204800)) {
		return(fsize+5);
	}
	return(((int) ((((float) fsize)/102400.0)-(0.9999999)))*65535);
}

int dact_upgrade_file(const char *name, const char *url_get, const char *url_ver, uint32_t version, const char *dest, const char *options) {
	int newver, ifd=-1, ofd=-1, x=-1;
	char *real_dest, *real_url_get, buf[4096];

	if (dest==NULL) {
		real_dest=parse_url_subst(DACT_BIN_DIR "@@FILE@@.so", name);
	} else {

				dact_ui_setopt(DACT_UI_OPT_PASSSTDIN, 1);
				break;
			case 'c':
				options[DACT_OPT_STDOUT]=!options[DACT_OPT_STDOUT];
				break;
			case 'b':
				i=atoi2(optarg);
				if (i<DACT_BLK_SIZE_MAX) dact_blk_size=i;
				if (i<DACT_BLK_SIZE_ABSMAX) dact_blk_size=i;
				break;
			case 'v':
				options[DACT_OPT_VERB]++;
				dact_ui_setopt(DACT_UI_OPT_LEVEL,dact_ui_getopt(DACT_UI_OPT_LEVEL)+1);
				break;
			case 'n':
				options[DACT_OPT_NOCRC]=!options[DACT_OPT_NOCRC];