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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Cache\Traits; use Symfony\Component\Cache\Exception\CacheException; /** * @author Nicolas Grekas <p@tchwork.com> * @author Rob Frawley 2nd <rmf@src.run> * * @internal */ trait FilesystemTrait { use FilesystemCommonTrait; private $marshaller; /** * @return bool */ public function prune() { $time = time(); $pruned = true; foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($this->directory, \FilesystemIterator::SKIP_DOTS), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) { if (!$h = @fopen($file, 'rb')) { continue; } if (($expiresAt = (int) fgets($h)) && $time >= $expiresAt) { fclose($h); $pruned = @unlink($file) && !file_exists($file) && $pruned; } else { fclose($h); } } return $pruned; } /** * {@inheritdoc} */ protected function doFetch(array $ids) { $values = []; $now = time(); foreach ($ids as $id) { $file = $this->getFile($id); if (!file_exists($file) || !$h = @fopen($file, 'rb')) { continue; } if (($expiresAt = (int) fgets($h)) && $now >= $expiresAt) { fclose($h); @unlink($file); } else { $i = rawurldecode(rtrim(fgets($h))); $value = stream_get_contents($h); fclose($h); if ($i === $id) { $values[$id] = $this->marshaller->unmarshall($value); } } } return $values; } /** * {@inheritdoc} */ protected function doHave($id) { $file = $this->getFile($id); return file_exists($file) && (@filemtime($file) > time() || $this->doFetch([$id])); } /** * {@inheritdoc} */ protected function doSave(array $values, $lifetime) { $expiresAt = $lifetime ? (time() + $lifetime) : 0; $values = $this->marshaller->marshall($values, $failed); foreach ($values as $id => $value) { if (!$this->write($this->getFile($id, true), $expiresAt."\n".rawurlencode($id)."\n".$value, $expiresAt)) { $failed[] = $id; } } if ($failed && !is_writable($this->directory)) { throw new CacheException(sprintf('Cache directory is not writable (%s)', $this->directory)); } return $failed; } }
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