MTimeProtectedFastFileStorage::garbageCollection

public MTimeProtectedFastFileStorage::garbageCollection()

public function garbageCollection() {
  $flags = \FilesystemIterator::CURRENT_AS_FILEINFO;
  $flags += \FilesystemIterator::SKIP_DOTS;

  foreach ($this->listAll() as $name) {
    $directory = $this->getContainingDirectoryFullPath($name);
    try {
      $dir_iterator = new \FilesystemIterator($directory, $flags);
    }
    catch (\UnexpectedValueException $e) {
      // FilesystemIterator throws an UnexpectedValueException if the
      // specified path is not a directory, or if it is not accessible.
      continue;
    }

    $directory_unlink = TRUE;
    $directory_mtime = filemtime($directory);
    foreach ($dir_iterator as $fileinfo) {
      if ($directory_mtime > $fileinfo->getMTime()) {
        // Ensure the folder is writable.
        @chmod($directory, 0777);
        @unlink($fileinfo->getPathName());
      }
      else {
        // The directory still contains valid files.
        $directory_unlink = FALSE;
      }
    }

    if ($directory_unlink) {
      $this->unlink($name);
    }
  }
}