<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Controller

 * @subpackage Router

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @version    $Id: Chain.php 23187 2010-10-20 18:42:37Z matthew $

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

/** Zend_Controller_Router_Route_Abstract */

require_once 'Zend/Controller/Router/Route/Abstract.php';

/**

 * Chain route is used for managing route chaining.

 *

 * @package    Zend_Controller

 * @subpackage Router

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Controller_Router_Route_Chain extends Zend_Controller_Router_Route_Abstract

{

    protected $_routes = array();

    protected $_separators = array();

    /**

     * Instantiates route based on passed Zend_Config structure

     *

     * @param Zend_Config $config Configuration object

     */

    public static function getInstance(Zend_Config $config)

    {

        $defs = ($config->defaults instanceof Zend_Config) ? $config->defaults->toArray() : array();

        return new self($config->route, $defs);

    }

    /**

     * Add a route to this chain

     *

     * @param  Zend_Controller_Router_Route_Abstract $route

     * @param  string                                $separator

     * @return Zend_Controller_Router_Route_Chain

     */

    public function chain(Zend_Controller_Router_Route_Abstract $route, $separator = '/')

    {

        $this->_routes[]     = $route;

        $this->_separators[] = $separator;

        return $this;

    }

    /**

     * Matches a user submitted path with a previously defined route.

     * Assigns and returns an array of defaults on a successful match.

     *

     * @param  Zend_Controller_Request_Http $request Request to get the path info from

     * @return array|false An array of assigned values or a false on a mismatch

     */

    public function match($request, $partial = null)

    {

        $path    = trim($request->getPathInfo(), '/');

        $subPath = $path;

        $values  = array();

        foreach ($this->_routes as $key => $route) {

            if ($key > 0 

                && $matchedPath !== null 

                && $subPath !== '' 

                && $subPath !== false

            ) {

                $separator = substr($subPath, 0, strlen($this->_separators[$key]));

                if ($separator !== $this->_separators[$key]) {

                    return false;

                }

                $subPath = substr($subPath, strlen($separator));

            }

            // TODO: Should be an interface method. Hack for 1.0 BC

            if (!method_exists($route, 'getVersion') || $route->getVersion() == 1) {

                $match = $subPath;

            } else {

                $request->setPathInfo($subPath);

                $match = $request;

            }

            $res = $route->match($match, true);

            if ($res === false) {

                return false;

            }

            $matchedPath = $route->getMatchedPath();

            if ($matchedPath !== null) {

                $subPath     = substr($subPath, strlen($matchedPath));

                $separator   = substr($subPath, 0, strlen($this->_separators[$key]));

            }

            $values = $res + $values;

        }

        $request->setPathInfo($path);

        if ($subPath !== '' && $subPath !== false) {

            return false;

        }

        return $values;

    }

    /**

     * Assembles a URL path defined by this route

     *

     * @param array $data An array of variable and value pairs used as parameters

     * @return string Route path with user submitted parameters

     */

    public function assemble($data = array(), $reset = false, $encode = false)

    {

        $value     = '';

        $numRoutes = count($this->_routes);

        foreach ($this->_routes as $key => $route) {

            if ($key > 0) {

                $value .= $this->_separators[$key];

            }

            $value .= $route->assemble($data, $reset, $encode, (($numRoutes - 1) > $key));

            if (method_exists($route, 'getVariables')) {

                $variables = $route->getVariables();

                foreach ($variables as $variable) {

                    $data[$variable] = null;

                }

            }

        }

        return $value;

    }

    /**

     * Set the request object for this and the child routes

     *

     * @param  Zend_Controller_Request_Abstract|null $request

     * @return void

     */

    public function setRequest(Zend_Controller_Request_Abstract $request = null)

    {

        $this->_request = $request;

        foreach ($this->_routes as $route) {

            if (method_exists($route, 'setRequest')) {

                $route->setRequest($request);

            }

        }

    }

}