RecyclerGarbageCollectionTask.php

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<?php
namespace TYPO3\CMS\Scheduler\Task;

class RecyclerGarbageCollectionTask extends \TYPO3\CMS\Scheduler\Task\AbstractTask {

    public $numberOfDays = 0;

    protected $recyclerDirectory = '_recycler_';

    public function execute() {
        // There is no file ctime on windows, so this task disables itself if OS = win
        if (TYPO3_OS == 'WIN') {
            throw new \BadMethodCallException('This task is not reliable for Windows OS', 1308270454);
        }
        $seconds = 60 * 60 * 24 * (int)$this->numberOfDays;
        $timestamp = $GLOBALS['EXEC_TIME'] - $seconds;
        // Get fileadmin directory
        $directory = PATH_site . 'fileadmin/';
        if (!empty($GLOBALS['TYPO3_CONF_VARS']['BE']['fileadminDir'])) {
            $directory = PATH_site . trim($GLOBALS['TYPO3_CONF_VARS']['BE']['fileadminDir']);
        }
        // Execute cleanup
        return $this->cleanupRecycledFiles($directory, $timestamp);
    }

    protected function cleanupRecycledFiles($directory, $timestamp) {
        $directory = \TYPO3\CMS\Core\Utility\GeneralUtility::getFileAbsFileName($directory);
        $timestamp = (int)$timestamp;
        // Check if given directory exists
        if (!@is_dir($directory)) {
            throw new \RuntimeException('Given directory "' . $directory . '" does not exist', 1301614535);
        }
        // Find all _recycler_ directories
        $directoryContent = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($directory));
        foreach ($directoryContent as $fileName => $file) {
            // Skip directories and files without recycler directory in absolute path
            $filePath = $file->getPath();
            if (substr($filePath, strrpos($filePath, '/') + 1) !== $this->recyclerDirectory) {
                continue;
            }
            // Remove files from _recycler_ that where moved to this folder for more than 'number of days'
            if ($file->isFile() && $timestamp > $file->getCTime()) {
                if (!@unlink($fileName)) {
                    throw new \RuntimeException('Could not remove file "' . $fileName . '"', 1301614537);
                }
            }
        }
        return TRUE;
    }

}