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   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\Comparator;
  13  
  14  /**
  15   * DateCompare compiles date comparisons.
  16   *
  17   * @author Fabien Potencier <fabien@symfony.com>
  18   */
  19  class DateComparator extends Comparator
  20  {
  21      /**
  22       * @param string $test A comparison string
  23       *
  24       * @throws \InvalidArgumentException If the test is not understood
  25       */
  26      public function __construct($test)
  27      {
  28          if (!preg_match('#^\s*(==|!=|[<>]=?|after|since|before|until)?\s*(.+?)\s*$#i', $test, $matches)) {
  29              throw new \InvalidArgumentException(sprintf('Don\'t understand "%s" as a date test.', $test));
  30          }
  31  
  32          try {
  33              $date = new \DateTime($matches[2]);
  34              $target = $date->format('U');
  35          } catch (\Exception $e) {
  36              throw new \InvalidArgumentException(sprintf('"%s" is not a valid date.', $matches[2]));
  37          }
  38  
  39          $operator = isset($matches[1]) ? $matches[1] : '==';
  40          if ('since' === $operator || 'after' === $operator) {
  41              $operator = '>';
  42          }
  43  
  44          if ('until' === $operator || 'before' === $operator) {
  45              $operator = '<';
  46          }
  47  
  48          $this->setOperator($operator);
  49          $this->setTarget($target);
  50      }
  51  }