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/vendor/symfony/config/Resource/ -> DirectoryResource.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   * DirectoryResource represents a resources stored in a subdirectory tree.
  16   *
  17   * @author Fabien Potencier <fabien@symfony.com>
  18   */
  19  class DirectoryResource implements SelfCheckingResourceInterface, \Serializable
  20  {
  21      private $resource;
  22      private $pattern;
  23  
  24      /**
  25       * @param string      $resource The file path to the resource
  26       * @param string|null $pattern  A pattern to restrict monitored files
  27       */
  28      public function __construct($resource, $pattern = null)
  29      {
  30          $this->resource = $resource;
  31          $this->pattern = $pattern;
  32      }
  33  
  34      /**
  35       * {@inheritdoc}
  36       */
  37      public function __toString()
  38      {
  39          return md5(serialize(array($this->resource, $this->pattern)));
  40      }
  41  
  42      /**
  43       * {@inheritdoc}
  44       */
  45      public function getResource()
  46      {
  47          return $this->resource;
  48      }
  49  
  50      /**
  51       * Returns the pattern to restrict monitored files.
  52       *
  53       * @return string|null
  54       */
  55      public function getPattern()
  56      {
  57          return $this->pattern;
  58      }
  59  
  60      /**
  61       * {@inheritdoc}
  62       */
  63      public function isFresh($timestamp)
  64      {
  65          if (!is_dir($this->resource)) {
  66              return false;
  67          }
  68  
  69          if ($timestamp < filemtime($this->resource)) {
  70              return false;
  71          }
  72  
  73          foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($this->resource), \RecursiveIteratorIterator::SELF_FIRST) as $file) {
  74              // if regex filtering is enabled only check matching files
  75              if ($this->pattern && $file->isFile() && !preg_match($this->pattern, $file->getBasename())) {
  76                  continue;
  77              }
  78  
  79              // always monitor directories for changes, except the .. entries
  80              // (otherwise deleted files wouldn't get detected)
  81              if ($file->isDir() && '/..' === substr($file, -3)) {
  82                  continue;
  83              }
  84  
  85              // for broken links
  86              try {
  87                  $fileMTime = $file->getMTime();
  88              } catch (\RuntimeException $e) {
  89                  continue;
  90              }
  91  
  92              // early return if a file's mtime exceeds the passed timestamp
  93              if ($timestamp < $fileMTime) {
  94                  return false;
  95              }
  96          }
  97  
  98          return true;
  99      }
 100  
 101      public function serialize()
 102      {
 103          return serialize(array($this->resource, $this->pattern));
 104      }
 105  
 106      public function unserialize($serialized)
 107      {
 108          list($this->resource, $this->pattern) = unserialize($serialized);
 109      }
 110  }


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