<?php
/* SVN FILE: $Id$ */

/**
 * Parses the request URL into controller, action, and parameters.
 * 
 * Long description for file
 *
 * PHP versions 4 and 5
 *
 * CakePHP :  Rapid Development Framework <http://www.cakephp.org/>
 * Copyright (c) 2005, CakePHP Authors/Developers
 *
 * Author(s): Michal Tatarynowicz aka Pies <tatarynowicz@gmail.com>
 *            Larry E. Masters aka PhpNut <nut@phpnut.com>
 *            Kamil Dzielinski aka Brego <brego.dk@gmail.com>
 *
 *  Licensed under The MIT License
 *  Redistributions of files must retain the above copyright notice.
 *
 * @filesource 
 * @author       CakePHP Authors/Developers
 * @copyright    Copyright (c) 2005, CakePHP Authors/Developers
 * @link         https://trac.cakephp.org/wiki/Authors Authors/Developers
 * @package      cake
 * @subpackage   cake.cake.libs
 * @since        CakePHP v 0.2.9
 * @version      $Revision$
 * @modifiedby   $LastChangedBy$
 * @lastmodified $Date$
 * @license      http://www.opensource.org/licenses/mit-license.php The MIT License
 */

/**
  * Included libraries.
  */
uses('object', 'neat_array');

/**
  * Parses the request URL into controller, action, and parameters.
  *
  * @package    cake
  * @subpackage cake.cake.libs
  * @since      CakePHP v 0.2.9
  *
  */
class Router extends Object {

/**
  * Array of routes
  *
  * @var array
  */
   var $routes = array();
   
/**
  * TODO: Better description. Returns this object's routes array. Returns false if there are no routes available.
  *
  * @param string $route    An empty string, or a route string "/"
  * @param array $default   NULL or an array describing the default route
  * @see routes
  * @return array           Array of routes
  */
   function connect ($route, $default=null) 
   {
      $parsed = $names = array ();

      $r = null;
      if (($route == '') || ($route == '/')) 
      {
         $regexp = '/^[\/]*$/';
         $this->routes[] = array($route, $regexp, array(), $default);
      }
      else 
      {
         $elements = array();
         foreach (explode('/', $route) as $element)
         {
            if (trim($element)) $elements[] = $element;
         }

         if (!count($elements))
         {
            return false;
         }

         foreach ($elements as $element) 
         {
            if (preg_match('/^:(.+)$/', $element, $r)) 
            {
            	$parsed[] = '(?:\/([^\/]+))?';
            	$names[] = $r[1];
            }
            elseif (preg_match('/^\*$/', $element, $r)) 
            {
            	$parsed[] = '(?:\/(.*))?';
            }
            else 
            {
            	$parsed[] = '/'.$element;
            }
         }
         $regexp = '#^'.join('', $parsed).'[\/]*$#';
         $this->routes[] = array($route, $regexp, $names, $default);
      }
      return $this->routes;
   }

/**
  * Parses given URL and returns an array of controllers, action and parameters
  * taken from that URL. 
  *
  * @param string $url URL to be parsed 
  * @return array 
  */
   function parse ($url) 
   {
      // An URL should start with a '/', mod_rewrite doesn't respect that, but no-mod_rewrite version does.
      // Here's the fix.
      if ($url && ('/' != $url[0]))
      {
         $url = '/'.$url;
      }
      
      $out = array();
      $r = null;

      $default_route = array
      (
         '/:controller/:action/* (default)',
         '/^(?:\/(?:([a-zA-Z0-9_\\-\\.]+)(?:\\/([a-zA-Z0-9_\\-\\.]+)(?:\\/(.*))?)?))[\\/]*$/',
         array('controller', 'action'),
         array());
         
      if(defined('CAKE_ADMIN'))
      {
          $admin = CAKE_ADMIN;
          if(!empty($admin))
          {
              $this->routes[] = array
              (
              '/:'.$admin.'/:controller/:action/* (default)',
              '/^(?:\/(?:('.$admin.')(?:\\/([a-zA-Z0-9_\\-\\.]+)(?:\\/([a-zA-Z0-9_\\-\\.]+)(?:\/(.*))?)?)?))[\/]*$/',
              array($admin, 'controller', 'action'),
              array());
              
          }
      }
      
      $this->connect('/bare/:controller/:action/*', array('bare'=>'1'));
      $this->connect('/ajax/:controller/:action/*', array('bare'=>'1'));
      $this->routes[] = $default_route;
      
      foreach ($this->routes as $route) 
      {
         list($route, $regexp, $names, $defaults) = $route;


         if (preg_match($regexp, $url, $r)) 
         {
            // $this->log($url.' matched '.$regexp, 'note');
            // remove the first element, which is the url
            array_shift($r);

            // hack, pre-fill the default route names
            foreach ($names as $name)
               $out[$name] = null;

            $ii = 0;

            if (is_array($defaults)) 
            {
               foreach ($defaults as $name=>$value) 
               {
                  if (preg_match('#[a-zA-Z_\-]#i', $name))
                  {
                     $out[$name] = $value;
                  }
                  else
                  {
                     $out['pass'][] = $value;
                  }
               }
            }

            foreach ($r as $found) 
            {
               // if $found is a named url element (i.e. ':action')
               if (isset($names[$ii])) 
               {
                  $out[$names[$ii]] = $found;
               }
               // unnamed elements go in as 'pass'
               else 
               {
                  $pass = new NeatArray(explode('/', $found));
                  $pass->cleanup();
                  $out['pass'] = $pass->value;
               }
               $ii++;
            }
            break;
         }
      }

      return $out;
   }
}

?>