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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <[email protected]> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Config\Resource; /** * FileResource represents a resource stored on the filesystem. * * The resource can be a file or a directory. * * @author Fabien Potencier <[email protected]> * * @final since Symfony 4.3 */ class FileResource implements SelfCheckingResourceInterface { /** * @var string|false */ private $resource; /** * @param string $resource The file path to the resource * * @throws \InvalidArgumentException */ public function __construct(string $resource) { $this->resource = realpath($resource) ?: (file_exists($resource) ? $resource : false); if (false === $this->resource) { throw new \InvalidArgumentException(sprintf('The file "%s" does not exist.', $resource)); } } /** * {@inheritdoc} */ public function __toString() { return $this->resource; } /** * @return string The canonicalized, absolute path to the resource */ public function getResource() { return $this->resource; } /** * {@inheritdoc} */ public function isFresh($timestamp) { return false !== ($filemtime = @filemtime($this->resource)) && $filemtime <= $timestamp; } }