public function __construct(\Iterator $iterator, $callback)
{
parent::__construct($iterator);
if (!is_callable($callback)) {
throw new InvalidArgumentException('The callback must be callable');
}
$this->callback = $callback;
}
/**
* Wraps a generated iterator in a filter iterator that removes directories
*
* @param \Iterator $iterator Iterator to wrap
*
* @return \Iterator
* @throws UnexpectedValueException
*/
protected function filterIterator(\Iterator $iterator)
{
$f = new FilterIterator($iterator, function ($i) {
if (!$i instanceof \SplFileInfo) {
throw new UnexpectedValueException('All iterators for UploadSync must return SplFileInfo objects');
}
return $i->isFile();
});
$f->rewind();
return $f;
}
