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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   * Comparator.
  16   *
  17   * @author Fabien Potencier <fabien@symfony.com>
  18   */
  19  class Comparator
  20  {
  21      private $target;
  22      private $operator = '==';
  23  
  24      /**
  25       * Gets the target value.
  26       *
  27       * @return string The target value
  28       */
  29      public function getTarget()
  30      {
  31          return $this->target;
  32      }
  33  
  34      /**
  35       * Sets the target value.
  36       *
  37       * @param string $target The target value
  38       */
  39      public function setTarget($target)
  40      {
  41          $this->target = $target;
  42      }
  43  
  44      /**
  45       * Gets the comparison operator.
  46       *
  47       * @return string The operator
  48       */
  49      public function getOperator()
  50      {
  51          return $this->operator;
  52      }
  53  
  54      /**
  55       * Sets the comparison operator.
  56       *
  57       * @param string $operator A valid operator
  58       *
  59       * @throws \InvalidArgumentException
  60       */
  61      public function setOperator($operator)
  62      {
  63          if (!$operator) {
  64              $operator = '==';
  65          }
  66  
  67          if (!\in_array($operator, array('>', '<', '>=', '<=', '==', '!='))) {
  68              throw new \InvalidArgumentException(sprintf('Invalid operator "%s".', $operator));
  69          }
  70  
  71          $this->operator = $operator;
  72      }
  73  
  74      /**
  75       * Tests against the target.
  76       *
  77       * @param mixed $test A test value
  78       *
  79       * @return bool
  80       */
  81      public function test($test)
  82      {
  83          switch ($this->operator) {
  84              case '>':
  85                  return $test > $this->target;
  86              case '>=':
  87                  return $test >= $this->target;
  88              case '<':
  89                  return $test < $this->target;
  90              case '<=':
  91                  return $test <= $this->target;
  92              case '!=':
  93                  return $test != $this->target;
  94          }
  95  
  96          return $test == $this->target;
  97      }
  98  }