1 <?php

     2 

     3 /*

     4  * This file is part of the Symfony package.

     5  *

     6  * (c) Fabien Potencier <fabien@symfony.com>

     7  *

     8  * For the full copyright and license information, please view the LICENSE

     9  * file that was distributed with this source code.

    10  */

    11 

    12 namespace Symfony\Component\Config\Resource;

    13 

    14 /**

    15  * FileResource represents a resource stored on the filesystem.

    16  *

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

    18  */

    19 class FileResource implements ResourceInterface

    20 {

    21     private $resource;

    22 

    23     /**

    24      * Constructor.

    25      *

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

    27      */

    28     public function __construct($resource)

    29     {

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

    31     }

    32 

    33     /**

    34      * Returns a string representation of the Resource.

    35      *

    36      * @return string A string representation of the Resource

    37      */

    38     public function __toString()

    39     {

    40         return (string) $this->resource;

    41     }

    42 

    43     /**

    44      * Returns the resource tied to this Resource.

    45      *

    46      * @return mixed The resource

    47      */

    48     public function getResource()

    49     {

    50         return $this->resource;

    51     }

    52 

    53     /**

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

    55      *

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

    57      *

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

    59      */

    60     public function isFresh($timestamp)

    61     {

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

    63             return false;

    64         }

    65 

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

    67     }

    68 }