crm.fsf.org/20131203/files/sites/all/modules-new/civicrm/vendor/symfony/finder/Symfony/Component/Finder/Iterator/FilterIterator.php

   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\Finder\Iterator;
  13
  14 /**
  15  * This iterator just overrides the rewind method in order to correct a PHP bug,
  16  * which existed before version 5.5.23/5.6.7.
  17  *
  18  * @see https://bugs.php.net/68557
  19  *
  20  * @author Alex Bogomazov
  21  */
  22 abstract class FilterIterator extends \FilterIterator
  23 {
  24     /**
  25      * This is a workaround for the problem with \FilterIterator leaving inner \FilesystemIterator in wrong state after
  26      * rewind in some cases.
  27      *
  28      * @see FilterIterator::rewind()
  29      */
  30     public function rewind()
  31     {
  32         if (PHP_VERSION_ID > 50607 || (PHP_VERSION_ID > 50523 && PHP_VERSION_ID < 50600)) {
  33             parent::rewind();
  34
  35             return;
  36         }
  37
  38         $iterator = $this;
  39         while ($iterator instanceof \OuterIterator) {
  40             $innerIterator = $iterator->getInnerIterator();
  41
  42             if ($innerIterator instanceof RecursiveDirectoryIterator) {
  43                 // this condition is necessary for iterators to work properly with non-local filesystems like ftp
  44                 if ($innerIterator->isRewindable()) {
  45                     $innerIterator->next();
  46                     $innerIterator->rewind();
  47                 }
  48             } elseif ($innerIterator instanceof \FilesystemIterator) {
  49                 $innerIterator->next();
  50                 $innerIterator->rewind();
  51             }
  52
  53             $iterator = $innerIterator;
  54         }
  55
  56         parent::rewind();
  57     }
  58 }