'; /** * Cache the individual feed elements so they don't need to be * searched for on every operation. * @return array */ protected function _buildListItemCache() { $entries = array(); foreach ($this->_element->childNodes as $child) { if ($child->localName == 'entry') { $entries[] = $child; } } return $entries; } /** * Easy access to tags keyed by "rel" attributes. * @TODO rationalize this with other __get/__call access * * If $elt->link() is called with no arguments, we will attempt to return * the value of the tag(s) like all other method-syntax attribute * access. If an argument is passed to link(), however, then we will return * the "href" value of the first tag that has a "rel" attribute * matching $rel: * * $elt->link(): returns the value of the link tag. * $elt->link('self'): returns the href from the first in the entry. * * @param string $rel The "rel" attribute to look for. * @return mixed */ public function link($rel = null) { if ($rel === null) { return parent::__call('link', null); } // Index link tags by their "rel" attribute. $links = parent::__get('link'); if (!is_array($links)) { if ($links instanceof Horde_Xml_Element) { $links = array($links); } else { return $links; } } foreach ($links as $link) { if (empty($link['rel'])) { continue; } if ($rel == $link['rel']) { return $link['href']; } } return null; } }