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/vendor/symfony/config/Resource/ -> FileResource.php (source)

   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   * The resource can be a file or a directory.
  18   *
  19   * @author Fabien Potencier <fabien@symfony.com>
  20   */
  21  class FileResource implements SelfCheckingResourceInterface, \Serializable
  22  {
  23      /**
  24       * @var string|false
  25       */
  26      private $resource;
  27  
  28      /**
  29       * @param string $resource The file path to the resource
  30       *
  31       * @throws \InvalidArgumentException
  32       */
  33      public function __construct($resource)
  34      {
  35          $this->resource = realpath($resource) ?: (file_exists($resource) ? $resource : false);
  36  
  37          if (false === $this->resource) {
  38              throw new \InvalidArgumentException(sprintf('The file "%s" does not exist.', $resource));
  39          }
  40      }
  41  
  42      /**
  43       * {@inheritdoc}
  44       */
  45      public function __toString()
  46      {
  47          return $this->resource;
  48      }
  49  
  50      /**
  51       * @return string The canonicalized, absolute path to the resource
  52       */
  53      public function getResource()
  54      {
  55          return $this->resource;
  56      }
  57  
  58      /**
  59       * {@inheritdoc}
  60       */
  61      public function isFresh($timestamp)
  62      {
  63          return false !== ($filemtime = @filemtime($this->resource)) && $filemtime <= $timestamp;
  64      }
  65  
  66      /**
  67       * @internal
  68       */
  69      public function serialize()
  70      {
  71          return serialize($this->resource);
  72      }
  73  
  74      /**
  75       * @internal
  76       */
  77      public function unserialize($serialized)
  78      {
  79          $this->resource = unserialize($serialized);
  80      }
  81  }


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