/**
* @param TaskInterface $task
* @return array|null
*/
protected function process(TaskInterface $task)
{
$result = NULL;
$sourceFile = $task->getOriginalProcessedFile() ?: $task->getSourceFile();
$sourceFilePath = realpath($sourceFile->getForLocalProcessing(FALSE));
$targetFilePath = realpath(GeneralUtility::tempnam('_processed_/nlx-tempfile-', '.' . $sourceFile->getExtension()));
switch ($sourceFile->getExtension()) {
case 'jpg':
case 'jpeg':
if ($this->settings['jpg.']['enabled'] === FALSE) {
return $result;
}
$library = 'jpegtran';
$arguments = sprintf('-copy none -optimize %s -outfile %s %s', $this->settings['jpg.']['progressive'] === TRUE ? '-progressive' : '', escapeshellarg($targetFilePath), escapeshellarg($sourceFilePath));
break;
case 'png':
if ($this->settings['png.']['enabled'] === FALSE) {
return $result;
}
$library = 'optipng';
$arguments = sprintf('-o%u -strip all -fix -clobber -force -out %s %s', $this->settings['png.']['optimizationLevel'], escapeshellarg($targetFilePath), escapeshellarg($sourceFilePath));
break;
case 'gif':
if ($this->settings['gif.']['enabled'] === FALSE) {
return $result;
}
$library = 'gifsicle';
$arguments = sprintf('--batch -O%u -o %s %s', $this->settings['gif.']['optimizationLevel'], escapeshellarg($targetFilePath), escapeshellarg($sourceFilePath));
break;
case 'svg':
if ($this->settings['svg.']['enabled'] === FALSE) {
return $result;
}
$library = 'svgo';
$arguments = sprintf('%s %s', escapeshellarg($sourceFilePath), escapeshellarg($targetFilePath));
break;
default:
return $result;
}
$cmd = escapeshellcmd($library) . ' ' . $arguments;
$output = [];
exec($cmd, $output, $return);
if ($return === 0) {
$result = array('filePath' => $targetFilePath);
}
return $result;
}
