public function getExternalDependencies($fileExtensions = array('css', 'js'), Uri $uri = null)
{
if (!is_array($fileExtensions)) {
return false;
}
$extensions = implode('|', $fileExtensions);
$pattern = '/[^\'](?:<link|<script).*(?:href|src)=["\']([\\S]+\\.(?:' . $extensions . ')+[?\\S]*)[\'"][^\']/iU';
$matches = array();
preg_match_all($pattern, $this->content, $matches);
$cleanFiles = array();
$files = $matches[1];
if (!is_null($uri)) {
$uri = htmlspecialchars_decode($uri);
$uri = new Uri($uri);
$cleanFiles = array();
foreach ($files as $file) {
$cleanFiles[] = $uri->concatUri($file);
}
} else {
foreach ($files as $file) {
$cleanFiles[] = new Uri($file);
}
}
return $cleanFiles;
}