function tearDown()
{
foreach (StudipFormat::getStudipMarkups() as $key => $value) {
StudipFormat::removeStudipMarkup($key);
}
foreach ($this->old_rules as $key => $value) {
StudipFormat::addStudipMarkup($key, @$value['start'], @$value['end'], @$value['callback']);
}
}
/**
* Extracts urls and their according open graph infos from a given string
*
* @param String $string Text to extract urls and open graph infos from
* @return OpenGraphURLCollection containing the extracted urls
*/
public static function extract($string)
{
$collection = new OpenGraphURLCollection();
if (Config::get()->OPENGRAPH_ENABLE) {
$regexp = StudipFormat::getStudipMarkups()['links']['start'];
$matched = preg_match_all('/' . $regexp . '/ms', $string, $matches, PREG_SET_ORDER);
foreach ($matches as $match) {
$url = $match[2];
if (!$url) {
continue;
}
if (!isLinkIntern($url)) {
$og_url = OpenGraphURL::fromURL($url);
if ($og_url && !$collection->find($og_url->id)) {
$og_url->store();
$collection[] = $og_url;
}
}
}
}
return $collection;
}