/**
* Takes a file reference and detects its content's language.
*
* @param \TYPO3\CMS\Core\Resource\FileInterface $file
* @return string Language ISO code
*/
public function detectLanguageFromFile(FileInterface $file)
{
$headers = array(TYPO3_user_agent, 'Content-Type: application/octet-stream', 'Connection: close');
$context = stream_context_create(array('http' => array('protocol_version' => 1.1, 'method' => 'PUT', 'header' => implode(CRLF, $headers), 'content' => $file->getContents())));
$response = $this->queryTika('/language/stream', $context);
return $response;
}
