function _fromRssItem($item, $channel)
{
$verbEl = $this->_child($item, self::VERB);
if (!empty($verbEl)) {
$this->verb = trim($verbEl->textContent);
} else {
$this->verb = ActivityVerb::POST;
// XXX: do other implied stuff here
}
$pubDateEl = $this->_child($item, self::PUBDATE, self::RSS);
if (!empty($pubDateEl)) {
$this->time = strtotime($pubDateEl->textContent);
}
if ($authorEl = $this->_child($item, self::AUTHOR, self::RSS)) {
$this->actor = ActivityObject::fromRssAuthor($authorEl);
} else {
if ($dcCreatorEl = $this->_child($item, self::CREATOR, self::DC)) {
$this->actor = ActivityObject::fromDcCreator($dcCreatorEl);
} else {
if ($posterousEl = $this->_child($item, ActivityObject::AUTHOR, ActivityObject::POSTEROUS)) {
// Special case for Posterous.com
$this->actor = ActivityObject::fromPosterousAuthor($posterousEl);
} else {
if (!empty($channel)) {
$this->actor = ActivityObject::fromRssChannel($channel);
} else {
// No actor!
}
}
}
}
$this->title = ActivityUtils::childContent($item, ActivityObject::TITLE, self::RSS);
$contentEl = ActivityUtils::child($item, self::ENCODED, self::CONTENTNS);
if (!empty($contentEl)) {
// <content:encoded> XML node's text content is HTML; no further processing needed.
$this->content = $contentEl->textContent;
} else {
$descriptionEl = ActivityUtils::child($item, self::DESCRIPTION, self::RSS);
if (!empty($descriptionEl)) {
// Per spec, <description> must be plaintext.
// In practice, often there's HTML... but these days good
// feeds are using <content:encoded> which is explicitly
// real HTML.
// We'll treat this following spec, and do HTML escaping
// to convert from plaintext to HTML.
$this->content = htmlspecialchars($descriptionEl->textContent);
}
}
$this->link = ActivityUtils::childContent($item, ActivityUtils::LINK, self::RSS);
// @fixme enclosures
// @fixme thumbnails... maybe
$guidEl = ActivityUtils::child($item, self::GUID, self::RSS);
if (!empty($guidEl)) {
$this->id = $guidEl->textContent;
if ($guidEl->hasAttribute('isPermaLink') && $guidEl->getAttribute('isPermaLink') != 'false') {
// overwrites <link>
$this->link = $this->id;
}
}
$this->objects[] = new ActivityObject($item);
$this->context = new ActivityContext($item);
}
/**
* Look up and, if necessary, create an Ostatus_profile for the remote
* profile with the given RSS feed - actually loaded from the feed.
* This should never return null -- you will either get an object or
* an exception will be thrown.
*
* @param DOMElement $feedEl root element of a loaded RSS feed
* @param array $hints additional discovery information passed from higher levels
* @todo FIXME: Should this be marked public?
* @return Ostatus_profile
* @throws Exception
*/
public static function ensureRssChannel(DOMElement $feedEl, array $hints)
{
// Special-case for Posterous. They have some nice metadata in their
// posterous:author elements. We should use them instead of the channel.
$items = $feedEl->getElementsByTagName('item');
if ($items->length > 0) {
$item = $items->item(0);
$authorEl = ActivityUtils::child($item, ActivityObject::AUTHOR, ActivityObject::POSTEROUS);
if (!empty($authorEl)) {
$obj = ActivityObject::fromPosterousAuthor($authorEl);
// Posterous has multiple authors per feed, and multiple feeds
// per author. We check if this is the "main" feed for this author.
if (array_key_exists('profileurl', $hints) && !empty($obj->poco) && common_url_to_nickname($hints['profileurl']) == $obj->poco->preferredUsername) {
return self::ensureActivityObjectProfile($obj, $hints);
}
}
}
$obj = ActivityUtils::getFeedAuthor($feedEl);
// @todo FIXME: We should check whether this feed has elements
// with different <author> or <dc:creator> elements, and... I dunno.
// Do something about that.
if (empty($obj)) {
$obj = ActivityObject::fromRssChannel($feedEl);
}
return self::ensureActivityObjectProfile($obj, $hints);
}
