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FileFilterIterator.php
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FileFilterIterator.php
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<?php
declare(strict_types=1);
/*
* This file is part of PHP CS Fixer.
*
* (c) Fabien Potencier <fabien@symfony.com>
* Dariusz Rumiński <dariusz.ruminski@gmail.com>
*
* This source file is subject to the MIT license that is bundled
* with this source code in the file LICENSE.
*/
namespace PhpCsFixer\Runner;
use PhpCsFixer\Cache\CacheManagerInterface;
use PhpCsFixer\FileReader;
use PhpCsFixer\FixerFileProcessedEvent;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Contracts\EventDispatcher\Event;
/**
* @author Dariusz Rumiński <dariusz.ruminski@gmail.com>
*
* @internal
*/
final class FileFilterIterator extends \FilterIterator
{
/**
* @var null|EventDispatcherInterface
*/
private $eventDispatcher;
private CacheManagerInterface $cacheManager;
/**
* @var array<string,bool>
*/
private array $visitedElements = [];
public function __construct(
\Traversable $iterator,
?EventDispatcherInterface $eventDispatcher,
CacheManagerInterface $cacheManager
) {
if (!$iterator instanceof \Iterator) {
$iterator = new \IteratorIterator($iterator);
}
parent::__construct($iterator);
$this->eventDispatcher = $eventDispatcher;
$this->cacheManager = $cacheManager;
}
public function accept(): bool
{
$file = $this->current();
if (!$file instanceof \SplFileInfo) {
throw new \RuntimeException(
sprintf(
'Expected instance of "\SplFileInfo", got "%s".',
get_debug_type($file)
)
);
}
$path = $file->isLink() ? $file->getPathname() : $file->getRealPath();
if (isset($this->visitedElements[$path])) {
return false;
}
$this->visitedElements[$path] = true;
if (!$file->isFile() || $file->isLink()) {
return false;
}
$content = FileReader::createSingleton()->read($path);
// mark as skipped:
if (
// empty file
'' === $content
// file that does not need fixing due to cache
|| !$this->cacheManager->needFixing($file->getPathname(), $content)
) {
$this->dispatchEvent(
FixerFileProcessedEvent::NAME,
new FixerFileProcessedEvent(FixerFileProcessedEvent::STATUS_SKIPPED)
);
return false;
}
return true;
}
private function dispatchEvent(string $name, Event $event): void
{
if (null === $this->eventDispatcher) {
return;
}
$this->eventDispatcher->dispatch($event, $name);
}
}