<?php
  
  /*
   * This file is part of the Symfony package.
   *
   * (c) Fabien Potencier <fabien@symfony.com>
   *
   * For the full copyright and license information, please view the LICENSE
   * file that was distributed with this source code.
   */
  
  namespace Symfony\Component\Routing\Matcher;
  
  use Symfony\Component\Routing\Exception\MethodNotAllowedException;
  
  /**
   * ApacheUrlMatcher matches URL based on Apache mod_rewrite matching (see ApacheMatcherDumper).
   *
   * @author Fabien Potencier <fabien@symfony.com>
   */
  class ApacheUrlMatcher extends UrlMatcher
  {
      /**
       * Tries to match a URL based on Apache mod_rewrite matching.
       *
       * Returns false if no route matches the URL.
       *
       * @param string $pathinfo The pathinfo to be parsed
       *
       * @return array An array of parameters
       *
       * @throws MethodNotAllowedException If the current method is not allowed
       */
      public function match($pathinfo)
      {
          $parameters = array();
          $defaults = array();
          $allow = array();
          $match = false;
  
          foreach ($_SERVER as $key => $value) {
              $name = $key;
  
              if (0 === strpos($name, 'REDIRECT_')) {
                  $name = substr($name, 9);
              }
  
              if (0 === strpos($name, '_ROUTING_DEFAULTS_')) {
                  $name = substr($name, 18);
                  $defaults[$name] = $value;
              } elseif (0 === strpos($name, '_ROUTING_')) {
                  $name = substr($name, 9);
                  if ('_route' == $name) {
                      $match = true;
                      $parameters[$name] = $value;
                  } elseif (0 === strpos($name, '_allow_')) {
                      $allow[] = substr($name, 7);
                  } else {
                      $parameters[$name] = $value;
                  }
              } else {
                  continue;
              }
  
              unset($_SERVER[$key]);
          }
  
          if ($match) {
              return $this->mergeDefaults($parameters, $defaults);
          } elseif (0 < count($allow)) {
              throw new MethodNotAllowedException($allow);
          } else {
              return parent::match($pathinfo);
          }
      }
  }