public function testReadEmpty()
{
$reader = new Xml();
$message = new Message(array(), '');
$dom = $reader->read($message);
$this->assertNull($dom);
}
/**
* $url should be an url to an ATOM or RSS feed. If the feed has an hub tag
* the url will be returned as PSX\Url object
*
* @param PSX\Url $url
* @return PSX\Url|boolean
*/
public function discover(Url $url, $type = 0)
{
$reader = new Xml();
$request = new GetRequest($url);
$request->setFollowLocation(true);
$response = $this->http->request($request);
switch ($type) {
case self::RSS2:
$dom = $reader->read($response);
$elements = $dom->getElementsByTagNameNS(Atom::$xmlns, 'link');
break;
case self::ATOM:
default:
$dom = $reader->read($response);
$elements = $dom->getElementsByTagName('link');
break;
}
for ($i = 0; $i < $elements->length; $i++) {
$link = $elements->item($i);
if (strcasecmp($link->getAttribute('rel'), 'hub') == 0) {
$href = new Url($link->getAttribute('href'));
return $this->lastHub = $href;
}
}
return false;
}
