/**
* Get/load the feed.
*
* @param string url The feed url.
* @param string category An optional category; default is <code>null</code>.
* @param int limit An optional item limit; default is 5; use 0 for all.
* @return RssFedd A <code>RssFeed</code> instance.
*/
public function getFeed($url, $category = null, $limit = 5)
{
$cacheKey = Toolbox::hash('feeds', $url, implode(':', $this->config));
if (!$this->cache || false === ($rssParser = $this->cache->lookup($cacheKey))) {
$rssParser = new RssParser($this->config);
// todo: conditional GET
$rssParser->parse(file_get_contents($url, $this->config['useIncludePath'], $this->getContext()));
}
$feed = new RssFeed();
$feed->setChannel(new RssChannel($rssParser->getChannel()));
$items = array();
foreach ($rssParser->getItems() as $itemData) {
$item = new RssItem($itemData);
if (null == $category || in_array($category, $item->getCategories())) {
$items[] = $item;
}
if (0 != $limit && $limit <= count($items)) {
break;
}
}
$feed->setItems(new \ArrayIterator($items));
// cache if enabled
if ($this->cache) {
$this->cache->save($rssParser, $cacheKey);
}
return $feed;
}
