rss-bridge/bridges/RssExpander.php

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<?php
/**
* A class providing facilities for RSS expansion. The goal here is to facilitate, as much as possible, writing bridges such as FreeNews, Gawker and other ones
* @name RssExpander
* @description Un bridge générique d'expansion automatique de contenu RSS ... pour tous ces sites qui ont un flux RSS mochement tonqué.
* @update 15/03/2015
* @use1(url="URL du flux dont vous souhaitez le contenu complet")
*/
abstract class RssExpander extends HttpCachingBridgeAbstract{
protected $name;
private $uri;
private $description;
public function collectData(array $param){
if (empty($param['url'])) {
$this->returnError('There is no $param[\'url\'] for this RSS expander', 404);
}
// $this->message("Loading from ".$param['url']);
// Notice WE DO NOT use cache here on purpose : we want a fresh view of the RSS stream each time
$rssContent = simplexml_load_file($param['url']) or $this->returnError('Could not request '.$param['url'], 404);
// $this->message("loaded RSS from ".$param['url']);
// TODO insert RSS format detection
// we suppose for now, we have some RSS 2.0
$this->collect_RSS_2_0_data($rssContent);
}
protected function collect_RSS_2_0_data($rssContent) {
$rssContent = $rssContent->channel[0];
// $this->message("RSS content is ===========\n".var_export($rssContent, true)."===========");
$this->load_RSS_2_0_feed_data($rssContent);
foreach($rssContent->item as $item) {
// $this->message("parsing item ".var_export($item, true));
$this->items[] = $this->parseRSSItem($item);
}
}
protected function RSS_2_0_time_to_timestamp($item) {
return DateTime::createFromFormat('D, d M Y H:i:s e', $item->pubDate)->getTimestamp();
}
// TODO set title, link, description, language, and so on
protected function load_RSS_2_0_feed_data($rssContent) {
$this->name = trim($rssContent->title);
$this->uri = trim($rssContent->link);
$this->description = trim($rssContent->description);
}
/**
* Method should return, from a source RSS item given by lastRSS, one of our Items objects
* @param $item the input rss item
* @return a RSS-Bridge Item, with (hopefully) the whole content)
*/
abstract protected function parseRSSItem($item);
public function getName(){
return $this->name;
}
public function getURI(){
return $this->uri;
}
public function getDescription() {
return $this->description;
}
}