/**
* Check whether the extractor service supports this file according to file type restrictions.
*
* @param File $file
* @param ExtractorInterface $extractor
* @return bool
*/
protected function isFileTypeSupportedByExtractor(File $file, ExtractorInterface $extractor)
{
$isSupported = true;
$fileTypeRestrictions = $extractor->getFileTypeRestrictions();
if (!empty($fileTypeRestrictions) && !in_array($file->getType(), $fileTypeRestrictions)) {
$isSupported = false;
}
return $isSupported;
}
/**
* Compare the priority of two Extractor classes.
* Is used for sorting array of Extractor instances by priority.
* We want the result to be ordered from high to low so a higher
* priority comes before a lower.
*
* @param ExtractorInterface $extractorA
* @param ExtractorInterface $extractorB
* @return int -1 a > b, 0 a == b, 1 a < b
*/
protected function compareExtractorPriority(ExtractorInterface $extractorA, ExtractorInterface $extractorB)
{
return $extractorB->getPriority() - $extractorA->getPriority();
}