/**
* This function tries to find a feed link for a given HTTP URI. It
* tries to download it. If it finds a valid feed source it parses
* this source instead into the given feed parsing context. It also
* replaces the HTTP URI with the found feed source.
*/
static void
feed_parser_auto_discover (feedParserCtxtPtr ctxt)
{
gchar *source;
if (ctxt->feed->parseErrors)
g_string_truncate (ctxt->feed->parseErrors, 0);
else
ctxt->feed->parseErrors = g_string_new(NULL);
debug1 (DEBUG_UPDATE, "Starting feed auto discovery (%s)", subscription_get_source (ctxt->subscription));
source = html_auto_discover_feed (ctxt->data, subscription_get_source (ctxt->subscription));
/* FIXME: we only need the !g_str_equal as a workaround after a 404 */
if (source && !g_str_equal (source, subscription_get_source (ctxt->subscription))) {
debug1 (DEBUG_UPDATE, "Discovered link: %s", source);
ctxt->failed = FALSE;
subscription_set_source (ctxt->subscription, source);
/* The feed that was processed wasn't the correct one, we need to redownload it.
* Cancel the update in case there's one in progress */
subscription_cancel_update (ctxt->subscription);
subscription_update (ctxt->subscription, FEED_REQ_RESET_TITLE);
g_free (source);
} else {
debug0 (DEBUG_UPDATE, "No feed link found!");
g_string_append (ctxt->feed->parseErrors, _("The URL you want Liferea to subscribe to points to a webpage and the auto discovery found no feeds on this page. Maybe this webpage just does not support feed auto discovery."));
}
}
static void
ui_update_cancel (nodePtr node)
{
if (node->children)
node_foreach_child (node, ui_update_cancel);
if (!node->subscription)
return;
subscription_cancel_update (node->subscription);
}
