Function xo_encoder_discover

tools/libxo/libxo/xo_encoder.c:209–259

}

static xo_encoder_node_t *
xo_encoder_discover (const char *name)
{
    void *dlp = NULL;
    char buf[MAXPATHLEN];
    xo_string_node_t *xsp;
    xo_encoder_node_t *xep = NULL;

    XO_STRING_LIST_FOREACH(xsp, &xo_encoder_path) {
	static const char fmt[] = "%s/%s.enc";
	char *dir = xsp->xs_data;
	size_t len = snprintf(buf, sizeof(buf), fmt, dir, name);

	if (len > sizeof(buf))	/* Should not occur */
	    continue;

	dlp = dlopen((const char *) buf, RTLD_NOW);
	if (dlp)
	    break;
    }

    if (dlp) {
	/*
	 * If the library exists, find the initializer function and
	 * call it.
	 */
	xo_encoder_init_func_t func;

	func = (xo_encoder_init_func_t) dlfunc(dlp, XO_ENCODER_INIT_NAME);
	if (func) {
	    xo_encoder_init_args_t xei;

	    bzero(&xei, sizeof(xei));

	    xei.xei_version = XO_ENCODER_VERSION;
	    ssize_t rc = func(&xei);
	    if (rc == 0 && xei.xei_handler) {
		xep = xo_encoder_list_add(name);
		if (xep) {
		    xep->xe_handler = xei.xei_handler;
		    xep->xe_dlhandle = dlp;
		}
	    }
	}

	if (xep == NULL)
	    dlclose(dlp);
    }

    return xep;
}

void
xo_encoder_register (const char *name, xo_encoder_func_t func)