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<?php

/**

 * Parses the request URL into controller, action, and parameters.

 *

 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)

 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)

 *

 * Licensed under The MIT License

 * For full copyright and license information, please see the LICENSE.txt

 * Redistributions of files must retain the above copyright notice.

 *

 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)

 * @link          http://cakephp.org CakePHP(tm) Project

 * @package       Cake.Routing

 * @since         CakePHP(tm) v 0.2.9

 * @license       http://www.opensource.org/licenses/mit-license.php MIT License

 */

App::uses('CakeRequest', 'Network');

App::uses('CakeRoute', 'Routing/Route');

/**

 * Parses the request URL into controller, action, and parameters. Uses the connected routes

 * to match the incoming URL string to parameters that will allow the request to be dispatched. Also

 * handles converting parameter lists into URL strings, using the connected routes. Routing allows you to decouple

 * the way the world interacts with your application (URLs) and the implementation (controllers and actions).

 *

 * ### Connecting routes

 *

 * Connecting routes is done using Router::connect(). When parsing incoming requests or reverse matching

 * parameters, routes are enumerated in the order they were connected. You can modify the order of connected

 * routes using Router::promote(). For more information on routes and how to connect them see Router::connect().

 *

 * ### Named parameters

 *

 * Named parameters allow you to embed key:value pairs into path segments. This allows you create hash

 * structures using URLs. You can define how named parameters work in your application using Router::connectNamed()

 *

 * @package       Cake.Routing

 */

class Router {

/**

 * Array of routes connected with Router::connect()

 *

 * @var array

 */

	public static $routes = array();

/**

 * Have routes been loaded

 *

 * @var boolean

 */

	public static $initialized = false;

/**

 * Contains the base string that will be applied to all generated URLs

 * For example `https://example.com`

 *

 * @var string

 */

	protected static $_fullBaseUrl;

/**

 * List of action prefixes used in connected routes.

 * Includes admin prefix

 *

 * @var array

 */

	protected static $_prefixes = array();

/**

 * Directive for Router to parse out file extensions for mapping to Content-types.

 *

 * @var boolean

 */

	protected static $_parseExtensions = false;

/**

 * List of valid extensions to parse from a URL. If null, any extension is allowed.

 *

 * @var array

 */

	protected static $_validExtensions = array();

/**

 * 'Constant' regular expression definitions for named route elements

 *

 */

	const ACTION = 'index|show|add|create|edit|update|remove|del|delete|view|item';

	const YEAR = '[12][0-9]{3}';

	const MONTH = '0[1-9]|1[012]';

	const DAY = '0[1-9]|[12][0-9]|3[01]';

	const ID = '[0-9]+';

	const UUID = '[A-Fa-f0-9]{8}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{12}';

/**

 * Named expressions

 *

 * @var array

 */

	protected static $_namedExpressions = array(

		'Action' => Router::ACTION,

		'Year' => Router::YEAR,

		'Month' => Router::MONTH,

		'Day' => Router::DAY,

		'ID' => Router::ID,

		'UUID' => Router::UUID

	);

/**

 * Stores all information necessary to decide what named arguments are parsed under what conditions.

 *

 * @var string

 */

	protected static $_namedConfig = array(

		'default' => array('page', 'fields', 'order', 'limit', 'recursive', 'sort', 'direction', 'step'),

		'greedyNamed' => true,

		'separator' => ':',

		'rules' => false,

	);

/**

 * The route matching the URL of the current request

 *

 * @var array

 */

	protected static $_currentRoute = array();

/**

 * Default HTTP request method => controller action map.

 *

 * @var array

 */

	protected static $_resourceMap = array(

		array('action' => 'index', 'method' => 'GET', 'id' => false),

		array('action' => 'view', 'method' => 'GET', 'id' => true),

		array('action' => 'add', 'method' => 'POST', 'id' => false),

		array('action' => 'edit', 'method' => 'PUT', 'id' => true),

		array('action' => 'delete', 'method' => 'DELETE', 'id' => true),

		array('action' => 'edit', 'method' => 'POST', 'id' => true)

	);

/**

 * List of resource-mapped controllers

 *

 * @var array

 */

	protected static $_resourceMapped = array();

/**

 * Maintains the request object stack for the current request.

 * This will contain more than one request object when requestAction is used.

 *

 * @var array

 */

	protected static $_requests = array();

/**

 * Initial state is populated the first time reload() is called which is at the bottom

 * of this file. This is a cheat as get_class_vars() returns the value of static vars even if they

 * have changed.

 *

 * @var array

 */

	protected static $_initialState = array();

/**

 * Default route class to use

 *

 * @var string

 */

	protected static $_routeClass = 'CakeRoute';

/**

 * Set the default route class to use or return the current one

 *

 * @param string $routeClass to set as default

 * @return mixed void|string

 * @throws RouterException

 */

	public static function defaultRouteClass($routeClass = null) {

		if ($routeClass === null) {

			return self::$_routeClass;

		}

		self::$_routeClass = self::_validateRouteClass($routeClass);

	}

/**

 * Validates that the passed route class exists and is a subclass of CakeRoute

 *

 * @param string $routeClass Route class name

 * @return string

 * @throws RouterException

 */

	protected static function _validateRouteClass($routeClass) {

		if (

			$routeClass !== 'CakeRoute' &&

			(!class_exists($routeClass) || !is_subclass_of($routeClass, 'CakeRoute'))

		) {

			throw new RouterException(__d('cake_dev', 'Route class not found, or route class is not a subclass of CakeRoute'));

		}

		return $routeClass;

	}

/**

 * Sets the Routing prefixes.

 *

 * @return void

 */

	protected static function _setPrefixes() {

		$routing = Configure::read('Routing');

		if (!empty($routing['prefixes'])) {

			self::$_prefixes = array_merge(self::$_prefixes, (array)$routing['prefixes']);

		}

	}

/**

 * Gets the named route elements for use in app/Config/routes.php

 *

 * @return array Named route elements

 * @see Router::$_namedExpressions

 */

	public static function getNamedExpressions() {

		return self::$_namedExpressions;

	}

/**

 * Resource map getter & setter.

 *

 * @param array $resourceMap Resource map

 * @return mixed

 * @see Router::$_resourceMap

 */

	public static function resourceMap($resourceMap = null) {

		if ($resourceMap === null) {

			return self::$_resourceMap;

		}

		self::$_resourceMap = $resourceMap;

	}

/**

 * Connects a new Route in the router.

 *

 * Routes are a way of connecting request URLs to objects in your application. At their core routes

 * are a set or regular expressions that are used to match requests to destinations.

 *

 * Examples:

 *

 * `Router::connect('/:controller/:action/*');`

 *

 * The first parameter will be used as a controller name while the second is used as the action name.

 * the '/*' syntax makes this route greedy in that it will match requests like `/posts/index` as well as requests

 * like `/posts/edit/1/foo/bar`.

 *

 * `Router::connect('/home-page', array('controller' => 'pages', 'action' => 'display', 'home'));`

 *

 * The above shows the use of route parameter defaults. And providing routing parameters for a static route.

 *

 * {{{

 * Router::connect(

 *   '/:lang/:controller/:action/:id',

 *   array(),

 *   array('id' => '[0-9]+', 'lang' => '[a-z]{3}')

 * );

 * }}}

 *

 * Shows connecting a route with custom route parameters as well as providing patterns for those parameters.

 * Patterns for routing parameters do not need capturing groups, as one will be added for each route params.

 *

 * $options offers four 'special' keys. `pass`, `named`, `persist` and `routeClass`

 * have special meaning in the $options array.

 *

 * - `pass` is used to define which of the routed parameters should be shifted into the pass array. Adding a

 *   parameter to pass will remove it from the regular route array. Ex. `'pass' => array('slug')`

 * - `persist` is used to define which route parameters should be automatically included when generating

 *   new URLs. You can override persistent parameters by redefining them in a URL or remove them by

 *   setting the parameter to `false`. Ex. `'persist' => array('lang')`

 * - `routeClass` is used to extend and change how individual routes parse requests and handle reverse routing,

 *   via a custom routing class. Ex. `'routeClass' => 'SlugRoute'`

 * - `named` is used to configure named parameters at the route level. This key uses the same options

 *   as Router::connectNamed()

 *

 * You can also add additional conditions for matching routes to the $defaults array.

 * The following conditions can be used:

 *

 * - `[type]` Only match requests for specific content types.

 * - `[method]` Only match requests with specific HTTP verbs.

 * - `[server]` Only match when $_SERVER['SERVER_NAME'] matches the given value.

 *

 * Example of using the `[method]` condition:

 *

 * `Router::connect('/tasks', array('controller' => 'tasks', 'action' => 'index', '[method]' => 'GET'));`

 *

 * The above route will only be matched for GET requests. POST requests will fail to match this route.

 *

 * @param string $route A string describing the template of the route

 * @param array $defaults An array describing the default route parameters. These parameters will be used by default

 *   and can supply routing parameters that are not dynamic. See above.

 * @param array $options An array matching the named elements in the route to regular expressions which that

 *   element should match. Also contains additional parameters such as which routed parameters should be

 *   shifted into the passed arguments, supplying patterns for routing parameters and supplying the name of a

 *   custom routing class.

 * @see routes

 * @return array Array of routes

 * @throws RouterException

 */

	public static function connect($route, $defaults = array(), $options = array()) {

		self::$initialized = true;

		foreach (self::$_prefixes as $prefix) {

			if (isset($defaults[$prefix])) {

				if ($defaults[$prefix]) {

					$defaults['prefix'] = $prefix;

				} else {

					unset($defaults[$prefix]);

				}

				break;

			}

		}

		if (isset($defaults['prefix'])) {

			self::$_prefixes[] = $defaults['prefix'];

			self::$_prefixes = array_keys(array_flip(self::$_prefixes));

		}

		$defaults += array('plugin' => null);

		if (empty($options['action'])) {

			$defaults += array('action' => 'index');

		}

		$routeClass = self::$_routeClass;

		if (isset($options['routeClass'])) {

			if (strpos($options['routeClass'], '.') === false) {

				$routeClass = $options['routeClass'];

			} else {

				list(, $routeClass) = pluginSplit($options['routeClass'], true);

			}

			$routeClass = self::_validateRouteClass($routeClass);

			unset($options['routeClass']);

		}

		if ($routeClass === 'RedirectRoute' && isset($defaults['redirect'])) {

			$defaults = $defaults['redirect'];

		}

		self::$routes[] = new $routeClass($route, $defaults, $options);

		return self::$routes;

	}

/**

 * Connects a new redirection Route in the router.

 *

 * Redirection routes are different from normal routes as they perform an actual

 * header redirection if a match is found. The redirection can occur within your

 * application or redirect to an outside location.

 *

 * Examples:

 *

 * `Router::redirect('/home/*', array('controller' => 'posts', 'action' => 'view'), array('persist' => true));`

 *

 * Redirects /home/* to /posts/view and passes the parameters to /posts/view. Using an array as the

 * redirect destination allows you to use other routes to define where a URL string should be redirected to.

 *

 * `Router::redirect('/posts/*', 'http://google.com', array('status' => 302));`

 *

 * Redirects /posts/* to http://google.com with a HTTP status of 302

 *

 * ### Options:

 *

 * - `status` Sets the HTTP status (default 301)

 * - `persist` Passes the params to the redirected route, if it can. This is useful with greedy routes,

 *   routes that end in `*` are greedy. As you can remap URLs and not loose any passed/named args.

 *

 * @param string $route A string describing the template of the route

 * @param array $url A URL to redirect to. Can be a string or a CakePHP array-based URL

 * @param array $options An array matching the named elements in the route to regular expressions which that

 *   element should match. Also contains additional parameters such as which routed parameters should be

 *   shifted into the passed arguments. As well as supplying patterns for routing parameters.

 * @see routes

 * @return array Array of routes

 */

	public static function redirect($route, $url, $options = array()) {

		App::uses('RedirectRoute', 'Routing/Route');

		$options['routeClass'] = 'RedirectRoute';

		if (is_string($url)) {

			$url = array('redirect' => $url);

		}

		return self::connect($route, $url, $options);

	}

/**

 * Specifies what named parameters CakePHP should be parsing out of incoming URLs. By default

 * CakePHP will parse every named parameter out of incoming URLs. However, if you want to take more

 * control over how named parameters are parsed you can use one of the following setups:

 *

 * Do not parse any named parameters:

 *

 * {{{ Router::connectNamed(false); }}}

 *

 * Parse only default parameters used for CakePHP's pagination:

 *

 * {{{ Router::connectNamed(false, array('default' => true)); }}}

 *

 * Parse only the page parameter if its value is a number:

 *

 * {{{ Router::connectNamed(array('page' => '[\d]+'), array('default' => false, 'greedy' => false)); }}}

 *

 * Parse only the page parameter no matter what.

 *

 * {{{ Router::connectNamed(array('page'), array('default' => false, 'greedy' => false)); }}}

 *

 * Parse only the page parameter if the current action is 'index'.

 *

 * {{{

 * Router::connectNamed(

 *    array('page' => array('action' => 'index')),

 *    array('default' => false, 'greedy' => false)

 * );

 * }}}

 *

 * Parse only the page parameter if the current action is 'index' and the controller is 'pages'.

 *

 * {{{

 * Router::connectNamed(

 *    array('page' => array('action' => 'index', 'controller' => 'pages')),

 *    array('default' => false, 'greedy' => false)

 * );

 * }}}

 *

 * ### Options

 *

 * - `greedy` Setting this to true will make Router parse all named params. Setting it to false will

 *    parse only the connected named params.

 * - `default` Set this to true to merge in the default set of named parameters.

 * - `reset` Set to true to clear existing rules and start fresh.

 * - `separator` Change the string used to separate the key & value in a named parameter. Defaults to `:`

 *

 * @param array $named A list of named parameters. Key value pairs are accepted where values are

 *    either regex strings to match, or arrays as seen above.

 * @param array $options Allows to control all settings: separator, greedy, reset, default

 * @return array

 */

	public static function connectNamed($named, $options = array()) {

		if (isset($options['separator'])) {

			self::$_namedConfig['separator'] = $options['separator'];

			unset($options['separator']);

		}

		if ($named === true || $named === false) {

			$options = array_merge(array('default' => $named, 'reset' => true, 'greedy' => $named), $options);

			$named = array();

		} else {

			$options = array_merge(array('default' => false, 'reset' => false, 'greedy' => true), $options);

		}

		if ($options['reset'] || self::$_namedConfig['rules'] === false) {

			self::$_namedConfig['rules'] = array();

		}

		if ($options['default']) {

			$named = array_merge($named, self::$_namedConfig['default']);

		}

		foreach ($named as $key => $val) {

			if (is_numeric($key)) {

				self::$_namedConfig['rules'][$val] = true;

			} else {

				self::$_namedConfig['rules'][$key] = $val;

			}

		}

		self::$_namedConfig['greedyNamed'] = $options['greedy'];

		return self::$_namedConfig;

	}

/**

 * Gets the current named parameter configuration values.

 *

 * @return array

 * @see Router::$_namedConfig

 */

	public static function namedConfig() {

		return self::$_namedConfig;

	}

/**

 * Creates REST resource routes for the given controller(s). When creating resource routes

 * for a plugin, by default the prefix will be changed to the lower_underscore version of the plugin

 * name. By providing a prefix you can override this behavior.

 *

 * ### Options:

 *

 * - 'id' - The regular expression fragment to use when matching IDs. By default, matches

 *    integer values and UUIDs.

 * - 'prefix' - URL prefix to use for the generated routes. Defaults to '/'.

 *

 * @param string|array $controller A controller name or array of controller names (i.e. "Posts" or "ListItems")

 * @param array $options Options to use when generating REST routes

 * @return array Array of mapped resources

 */

	public static function mapResources($controller, $options = array()) {

		$hasPrefix = isset($options['prefix']);

		$options = array_merge(array(

			'prefix' => '/',

			'id' => self::ID . '|' . self::UUID

		), $options);

		$prefix = $options['prefix'];

		if (strpos($prefix, '/') !== 0) {

			$prefix = '/' . $prefix;

		}

		if (substr($prefix, -1) !== '/') {

			$prefix .= '/';

		}

		foreach ((array)$controller as $name) {

			list($plugin, $name) = pluginSplit($name);

			$urlName = Inflector::underscore($name);

			$plugin = Inflector::underscore($plugin);

			if ($plugin && !$hasPrefix) {

				$prefix = '/' . $plugin . '/';

			}

			foreach (self::$_resourceMap as $params) {

				$url = $prefix . $urlName . (($params['id']) ? '/:id' : '');

				Router::connect($url,

					array(

						'plugin' => $plugin,

						'controller' => $urlName,

						'action' => $params['action'],

						'[method]' => $params['method']

					),

					array('id' => $options['id'], 'pass' => array('id'))

				);

			}

			self::$_resourceMapped[] = $urlName;

		}

		return self::$_resourceMapped;

	}

/**

 * Returns the list of prefixes used in connected routes

 *

 * @return array A list of prefixes used in connected routes

 */

	public static function prefixes() {

		return self::$_prefixes;

	}

/**

 * Parses given URL string. Returns 'routing' parameters for that URL.

 *

 * @param string $url URL to be parsed

 * @return array Parsed elements from URL

 */

	public static function parse($url) {

		if (!self::$initialized) {

			self::_loadRoutes();

		}

		$ext = null;

		$out = array();

		if (strlen($url) && strpos($url, '/') !== 0) {

			$url = '/' . $url;

		}

		if (strpos($url, '?') !== false) {

			list($url, $queryParameters) = explode('?', $url, 2);

			parse_str($queryParameters, $queryParameters);

		}

		extract(self::_parseExtension($url));

		for ($i = 0, $len = count(self::$routes); $i < $len; $i++) {

			$route =& self::$routes[$i];

			if (($r = $route->parse($url)) !== false) {

				self::$_currentRoute[] =& $route;

				$out = $r;

				break;

			}

		}

		if (isset($out['prefix'])) {

			$out['action'] = $out['prefix'] . '_' . $out['action'];

		}

		if (!empty($ext) && !isset($out['ext'])) {

			$out['ext'] = $ext;

		}

		if (!empty($queryParameters) && !isset($out['?'])) {

			$out['?'] = $queryParameters;

		}

		return $out;

	}

/**

 * Parses a file extension out of a URL, if Router::parseExtensions() is enabled.

 *

 * @param string $url

 * @return array Returns an array containing the altered URL and the parsed extension.

 */

	protected static function _parseExtension($url) {

		$ext = null;

		if (self::$_parseExtensions) {

			if (preg_match('/\.[0-9a-zA-Z]*$/', $url, $match) === 1) {

				$match = substr($match[0], 1);

				if (empty(self::$_validExtensions)) {

					$url = substr($url, 0, strpos($url, '.' . $match));

					$ext = $match;

				} else {

					foreach (self::$_validExtensions as $name) {

						if (strcasecmp($name, $match) === 0) {

							$url = substr($url, 0, strpos($url, '.' . $name));

							$ext = $match;

							break;

						}

					}

				}

			}

		}

		return compact('ext', 'url');

	}

/**

 * Takes parameter and path information back from the Dispatcher, sets these

 * parameters as the current request parameters that are merged with URL arrays

 * created later in the request.

 *

 * Nested requests will create a stack of requests. You can remove requests using

 * Router::popRequest(). This is done automatically when using Object::requestAction().

 *

 * Will accept either a CakeRequest object or an array of arrays. Support for

 * accepting arrays may be removed in the future.

 *

 * @param CakeRequest|array $request Parameters and path information or a CakeRequest object.

 * @return void

 */

	public static function setRequestInfo($request) {

		if ($request instanceof CakeRequest) {

			self::$_requests[] = $request;

		} else {

			$requestObj = new CakeRequest();

			$request += array(array(), array());

			$request[0] += array('controller' => false, 'action' => false, 'plugin' => null);

			$requestObj->addParams($request[0])->addPaths($request[1]);

			self::$_requests[] = $requestObj;

		}

	}

/**

 * Pops a request off of the request stack. Used when doing requestAction

 *

 * @return CakeRequest The request removed from the stack.

 * @see Router::setRequestInfo()

 * @see Object::requestAction()

 */

	public static function popRequest() {

		return array_pop(self::$_requests);

	}

/**

 * Get the either the current request object, or the first one.

 *

 * @param boolean $current Whether you want the request from the top of the stack or the first one.

 * @return CakeRequest or null.

 */

	public static function getRequest($current = false) {

		if ($current) {

			$i = count(self::$_requests) - 1;

			return isset(self::$_requests[$i]) ? self::$_requests[$i] : null;

		}

		return isset(self::$_requests[0]) ? self::$_requests[0] : null;

	}

/**

 * Gets parameter information

 *

 * @param boolean $current Get current request parameter, useful when using requestAction

 * @return array Parameter information

 */

	public static function getParams($current = false) {

		if ($current && self::$_requests) {

			return self::$_requests[count(self::$_requests) - 1]->params;

		}

		if (isset(self::$_requests[0])) {

			return self::$_requests[0]->params;

		}

		return array();

	}

/**

 * Gets URL parameter by name

 *

 * @param string $name Parameter name

 * @param boolean $current Current parameter, useful when using requestAction

 * @return string Parameter value

 */

	public static function getParam($name = 'controller', $current = false) {

		$params = Router::getParams($current);

		if (isset($params[$name])) {

			return $params[$name];

		}

		return null;

	}

/**

 * Gets path information

 *

 * @param boolean $current Current parameter, useful when using requestAction

 * @return array

 */

	public static function getPaths($current = false) {

		if ($current) {

			return self::$_requests[count(self::$_requests) - 1];

		}

		if (!isset(self::$_requests[0])) {

			return array('base' => null);

		}

		return array('base' => self::$_requests[0]->base);

	}

/**

 * Reloads default Router settings. Resets all class variables and

 * removes all connected routes.

 *

 * @return void

 */

	public static function reload() {

		if (empty(self::$_initialState)) {

			self::$_initialState = get_class_vars('Router');

			self::_setPrefixes();

			return;

		}

		foreach (self::$_initialState as $key => $val) {

			if ($key !== '_initialState') {

				self::${$key} = $val;

			}

		}

		self::_setPrefixes();

	}

/**

 * Promote a route (by default, the last one added) to the beginning of the list

 *

 * @param integer $which A zero-based array index representing the route to move. For example,

 *    if 3 routes have been added, the last route would be 2.

 * @return boolean Returns false if no route exists at the position specified by $which.

 */

	public static function promote($which = null) {

		if ($which === null) {

			$which = count(self::$routes) - 1;

		}

		if (!isset(self::$routes[$which])) {

			return false;

		}

		$route =& self::$routes[$which];

		unset(self::$routes[$which]);

		array_unshift(self::$routes, $route);

		return true;

	}

/**

 * Finds URL for specified action.

 *

 * Returns a URL pointing to a combination of controller and action. Param

 * $url can be:

 *

 * - Empty - the method will find address to actual controller/action.

 * - '/' - the method will find base URL of application.

 * - A combination of controller/action - the method will find URL for it.

 *

 * There are a few 'special' parameters that can change the final URL string that is generated

 *

 * - `base` - Set to false to remove the base path from the generated URL. If your application

 *   is not in the root directory, this can be used to generate URLs that are 'cake relative'.

 *   cake relative URLs are required when using requestAction.

 * - `?` - Takes an array of query string parameters

 * - `#` - Allows you to set URL hash fragments.

 * - `full_base` - If true the `Router::fullBaseUrl()` value will be prepended to generated URLs.

 *

 * @param string|array $url Cake-relative URL, like "/products/edit/92" or "/presidents/elect/4"

 *   or an array specifying any of the following: 'controller', 'action',

 *   and/or 'plugin', in addition to named arguments (keyed array elements),

 *   and standard URL arguments (indexed array elements)

 * @param boolean|array $full If (bool) true, the full base URL will be prepended to the result.

 *   If an array accepts the following keys

 *    - escape - used when making URLs embedded in html escapes query string '&'

 *    - full - if true the full base URL will be prepended.

 * @return string Full translated URL with base path.

 */

	public static function url($url = null, $full = false) {

		if (!self::$initialized) {

			self::_loadRoutes();

		}

		$params = array('plugin' => null, 'controller' => null, 'action' => 'index');

		if (is_bool($full)) {

			$escape = false;

		} else {

			extract($full + array('escape' => false, 'full' => false));

		}

		$path = array('base' => null);

		if (!empty(self::$_requests)) {

			$request = self::$_requests[count(self::$_requests) - 1];

			$params = $request->params;

			$path = array('base' => $request->base, 'here' => $request->here);

		}

		if (empty($path['base'])) {

			$path['base'] = Configure::read('App.base');

		}

		$base = $path['base'];

		$extension = $output = $q = $frag = null;

		if (empty($url)) {

			$output = isset($path['here']) ? $path['here'] : '/';

			if ($full) {

				$output = self::fullBaseUrl() . $output;

			}

			return $output;

		} elseif (is_array($url)) {

			if (isset($url['base']) && $url['base'] === false) {

				$base = null;

				unset($url['base']);

			}

			if (isset($url['full_base']) && $url['full_base'] === true) {

				$full = true;

				unset($url['full_base']);

			}

			if (isset($url['?'])) {

				$q = $url['?'];

				unset($url['?']);

			}

			if (isset($url['#'])) {

				$frag = '#' . $url['#'];

				unset($url['#']);

			}

			if (isset($url['ext'])) {

				$extension = '.' . $url['ext'];

				unset($url['ext']);

			}

			if (empty($url['action'])) {

				if (empty($url['controller']) || $params['controller'] === $url['controller']) {

					$url['action'] = $params['action'];

				} else {

					$url['action'] = 'index';

				}

			}

			$prefixExists = (array_intersect_key($url, array_flip(self::$_prefixes)));

			foreach (self::$_prefixes as $prefix) {

				if (!empty($params[$prefix]) && !$prefixExists) {

					$url[$prefix] = true;

				} elseif (isset($url[$prefix]) && !$url[$prefix]) {

					unset($url[$prefix]);

				}

				if (isset($url[$prefix]) && strpos($url['action'], $prefix . '_') === 0) {

					$url['action'] = substr($url['action'], strlen($prefix) + 1);

				}

			}

			$url += array('controller' => $params['controller'], 'plugin' => $params['plugin']);

			$match = false;

			for ($i = 0, $len = count(self::$routes); $i < $len; $i++) {

				$originalUrl = $url;

				$url = self::$routes[$i]->persistParams($url, $params);

				if ($match = self::$routes[$i]->match($url)) {

					$output = trim($match, '/');

					break;

				}

				$url = $originalUrl;

			}

			if ($match === false) {

				$output = self::_handleNoRoute($url);

			}

		} else {

			if (preg_match('/^([a-z][a-z0-9.+\-]+:|:?\/\/|[#?])/i', $url)) {

				return $url;

			}

			if (substr($url, 0, 1) === '/') {

				$output = substr($url, 1);

			} else {

				foreach (self::$_prefixes as $prefix) {

					if (isset($params[$prefix])) {

						$output .= $prefix . '/';

						break;

					}

				}

				if (!empty($params['plugin']) && $params['plugin'] !== $params['controller']) {

					$output .= Inflector::underscore($params['plugin']) . '/';

				}

				$output .= Inflector::underscore($params['controller']) . '/' . $url;

			}

		}

		$protocol = preg_match('#^[a-z][a-z0-9+\-.]*\://#i', $output);

		if ($protocol === 0) {

			$output = str_replace('//', '/', $base . '/' . $output);

			if ($full) {

				$output = self::fullBaseUrl() . $output;

			}

			if (!empty($extension)) {

				$output = rtrim($output, '/');

			}

		}

		return $output . $extension . self::queryString($q, array(), $escape) . $frag;

	}

/**

 * Sets the full base URL that will be used as a prefix for generating

 * fully qualified URLs for this application. If no parameters are passed,

 * the currently configured value is returned.

 *

 * ## Note:

 *

 * If you change the configuration value ``App.fullBaseUrl`` during runtime

 * and expect the router to produce links using the new setting, you are

 * required to call this method passing such value again.

 *

 * @param string $base the prefix for URLs generated containing the domain.

 * For example: ``http://example.com``

 * @return string

 */

	public static function fullBaseUrl($base = null) {

		if ($base !== null) {

			self::$_fullBaseUrl = $base;

			Configure::write('App.fullBaseUrl', $base);

		}

		if (empty(self::$_fullBaseUrl)) {

			self::$_fullBaseUrl = Configure::read('App.fullBaseUrl');

		}

		return self::$_fullBaseUrl;

	}

/**

 * A special fallback method that handles URL arrays that cannot match

 * any defined routes.

 *

 * @param array $url A URL that didn't match any routes

 * @return string A generated URL for the array

 * @see Router::url()

 */

	protected static function _handleNoRoute($url) {

		$named = $args = array();

		$skip = array_merge(

			array('bare', 'action', 'controller', 'plugin', 'prefix'),

			self::$_prefixes

		);

		$keys = array_values(array_diff(array_keys($url), $skip));

		$count = count($keys);

		// Remove this once parsed URL parameters can be inserted into 'pass'

		for ($i = 0; $i < $count; $i++) {

			$key = $keys[$i];

			if (is_numeric($keys[$i])) {

				$args[] = $url[$key];

			} else {

				$named[$key] = $url[$key];

			}

		}

		list($args, $named) = array(Hash::filter($args), Hash::filter($named));

		foreach (self::$_prefixes as $prefix) {

			$prefixed = $prefix . '_';

			if (!empty($url[$prefix]) && strpos($url['action'], $prefixed) === 0) {

				$url['action'] = substr($url['action'], strlen($prefixed) * -1);

				break;

			}

		}

		if (empty($named) && empty($args) && (!isset($url['action']) || $url['action'] === 'index')) {

			$url['action'] = null;

		}

		$urlOut = array_filter(array($url['controller'], $url['action']));

		if (isset($url['plugin'])) {

			array_unshift($urlOut, $url['plugin']);

		}

		foreach (self::$_prefixes as $prefix) {

			if (isset($url[$prefix])) {

				array_unshift($urlOut, $prefix);

				break;

			}

		}

		$output = implode('/', $urlOut);

		if (!empty($args)) {

			$output .= '/' . implode('/', array_map('rawurlencode', $args));

		}