owncloud / core

		if (function_exists('finfo_open') and function_exists('finfo_file')) {

			$finfo = finfo_open(FILEINFO_MIME);

			return finfo_buffer($finfo, $data);

		} else {

			$tmpFile = \OC::$server->getTempManager()->getTemporaryFile();

			$fh = fopen($tmpFile, 'wb');

			fwrite($fh, $data, 8024);

			fclose($fh);

			$mime = $this->detect($tmpFile);

			unset($tmpFile);

			return $mime;

		}

	}

	/**

		if ($useFileDirectly) {

			$absPath = $fileview->getLocalFile($path);

		} else {

			$absPath = \OC::$server->getTempManager()->getTemporaryFile();

			$handle = $fileview->fopen($path, 'rb');

			// we better use 5MB (1024 * 1024 * 5 = 5242880) instead of 1MB.

			// in some cases 1MB was no enough to generate thumbnail

			$firstmb = stream_get_contents($handle, 5242880);

			file_put_contents($absPath, $firstmb);

		}

		$result = $this->generateThumbNail($maxX, $maxY, $absPath, 5);

		if ($result === false) {