<?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\Config\Resource;

/**

 * FileResource represents a resource stored on the filesystem.

 *

 * @author Fabien Potencier <fabien@symfony.com>

 */

class FileResource implements ResourceInterface

{

    private $resource;

    /**

     * Constructor.

     *

     * @param string $resource The file path to the resource

     */

    public function __construct($resource)

    {

        $this->resource = realpath($resource);

    }

    /**

     * Returns a string representation of the Resource.

     *

     * @return string A string representation of the Resource

     */

    public function __toString()

    {

        return (string) $this->resource;

    }

    /**

     * Returns the resource tied to this Resource.

     *

     * @return mixed The resource

     */

    public function getResource()

    {

        return $this->resource;

    }

    /**

     * Returns true if the resource has not been updated since the given timestamp.

     *

     * @param integer $timestamp The last time the resource was loaded

     *

     * @return Boolean true if the resource has not been updated, false otherwise

     */

    public function isFresh($timestamp)

    {

        if (!file_exists($this->resource)) {

            return false;

        }

        return filemtime($this->resource) < $timestamp;

    }

}