<?php
/**
* Parses the request URL into controller, action, and parameters.
*
* PHP 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package cake
* @subpackage cake.cake.libs
* @since CakePHP(tm) v 0.2.9
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
App::import('Core', 'CakeRequest');
App::import('Core', 'route/CakeRoute');
/**
* Parses the request URL into controller, action, and parameters.
*
* @package cake
* @subpackage cake.cake.libs
*/
class Router {
/**
* Array of routes connected with Router::connect()
*
* @var array
* @access public
*/
public static $routes = array();
/**
* List of action prefixes used in connected routes.
* Includes admin prefix
*
* @var array
* @access private
*/
protected static $_prefixes = array();
/**
* Directive for Router to parse out file extensions for mapping to Content-types.
*
* @var boolean
* @access private
*/
protected static $_parseExtensions = false;
/**
* List of valid extensions to parse from a URL. If null, any extension is allowed.
*
* @var array
* @access private
*/
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}';
private static $__named = 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
* @access public
*/
public static $named = array(
'default' => array('page', 'fields', 'order', 'limit', 'recursive', 'sort', 'direction', 'step'),
'greedy' => true,
'separator' => ':',
'rules' => false,
);
/**
* The route matching the URL of the current request
*
* @var array
* @access private
*/
protected static $_currentRoute = array();
/**
* Default HTTP request method => controller action map.
*
* @var array
* @access private
*/
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();
/**
* Keeps Router state to determine if default routes have already been connected
*
* @var boolean
* @access private
*/
protected static $_defaultsMapped = false;
/**
* Keeps track of whether the connection of default routes is enabled or disabled.
*
* @var boolean
*/
protected static $_connectDefaults = true;
/**
* Initial state is popualated 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();
/**
* Sets the Routing prefixes.
*
* @return void
* @access private
*/
protected static function _setPrefixes() {
$routing = Configure::read('Routing');
if (!empty($routing['prefixes'])) {
self::$_prefixes = array_merge(self::$_prefixes, (array)$routing['prefixes']);
}
}
/**
* Gets the named route elements for use in app/config/routes.php
*
* @return array Named route elements
* @see Router::$__named
*/
public static function getNamedExpressions() {
return self::$__named;
}
/**
* 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 two 'special' keys. `pass` and `persist` 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 peristent parameters by redifining them in a url or remove them by
* setting the parameter to `false`. Ex. `'persist' => array('lang')`
*
* @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 $options An array matching the named elements in the route to regular expressions which that
* element should match. Also contains additional parameters such as which routed parameters should be
* shifted into the passed arguments. As well as supplying patterns for routing parameters.
* @see routes
* @return array Array of routes
* @throws Exception
*/
public static function connect($route, $defaults = array(), $options = array()) {
foreach (self::$_prefixes as $prefix) {
if (isset($defaults[$prefix])) {
$defaults['prefix'] = $prefix;
break;
}
}
if (isset($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');
}
$routeClass = 'CakeRoute';
if (isset($options['routeClass'])) {
$routeClass = $options['routeClass'];
unset($options['routeClass']);
}
$Route = new $routeClass($route, $defaults, $options);
if (!$Route instanceof CakeRoute) {
throw new Exception(__('Route classes must extend CakeRoute'));
}
self::$routes[] =& $Route;
return self::$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
*
* `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
*
* @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 Cake 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) {
App::import('Core', 'route/RedirectRoute');
$options['routeClass'] = 'RedirectRoute';
return self::connect($route, $url, $options);
}
/**
* Specifies what named parameters CakePHP should be parsing. The most common setups are:
*
* 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 mater 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)
* );
* }}}
*
* @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['argSeparator'])) {
self::$named['separator'] = $options['argSeparator'];
unset($options['argSeparator']);
}
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'] == true || self::$named['rules'] === false) {
self::$named['rules'] = array();
}
if ($options['default']) {
$named = array_merge($named, self::$named['default']);
}
foreach ($named as $key => $val) {
if (is_numeric($key)) {
self::$named['rules'][$val] = true;
} else {
self::$named['rules'][$key] = $val;
}
}
self::$named['greedy'] = $options['greedy'];
return self::$named;
}
/**
* Tell router to connect or not connect the default routes.
*
* If default routes are disabled all automatic route generation will be disabled
* and you will need to manually configure all the routes you want.
*
* @param boolean $connect Set to true or false depending on whether you want or don't want default routes.
* @return void
*/
public static function defaults($connect = true) {
self::$_connectDefaults = $connect;
}
/**
* Creates REST resource routes for the given controller(s)
*
* ### 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 mixed $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()) {
$options = array_merge(array('prefix' => '/', 'id' => self::$__named['ID'] . '|' . self::$__named['UUID']), $options);
$prefix = $options['prefix'];
foreach ((array)$controller as $ctlName) {
$urlName = Inflector::underscore($ctlName);
foreach (self::$_resourceMap as $params) {
extract($params);
$url = $prefix . $urlName . (($id) ? '/:id' : '');
Router::connect($url,
array('controller' => $urlName, 'action' => $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' parametets for that url.
*
* @param string $url URL to be parsed
* @return array Parsed elements from URL
*/
public static function parse($url) {
if (!self::$_defaultsMapped && self::$_connectDefaults) {
self::__connectDefaultRoutes();
}
$out = array(
'pass' => array(),
'named' => array()
);
$r = $ext = null;
if ($url && strpos($url, '/') !== 0) {
$url = '/' . $url;
}
if (strpos($url, '?') !== false) {
$url = substr($url, 0, strpos($url, '?'));
}
extract(self::__parseExtension($url));
for ($i = 0, $len = count(self::$routes); $i < $len; $i++) {
$route =& self::$routes[$i];
if (($r = $route->parse($url)) !== false) {
self::$_currentRoute[] =& $route;
$params = $route->options;
$argOptions = array();
if (array_key_exists('named', $params)) {
$argOptions['named'] = $params['named'];
unset($params['named']);
}
if (array_key_exists('greedy', $params)) {
$argOptions['greedy'] = $params['greedy'];
unset($params['greedy']);
}
$out = $r;
if (isset($out['_args_'])) {
$argOptions['context'] = array('action' => $out['action'], 'controller' => $out['controller']);
$parsedArgs = self::getArgs($out['_args_'], $argOptions);
$out['pass'] = array_merge($out['pass'], $parsedArgs['pass']);
$out['named'] = $parsedArgs['named'];
unset($out['_args_']);
}
if (isset($params['pass'])) {
$j = count($params['pass']);
while($j--) {
if (isset($out[$params['pass'][$j]])) {
array_unshift($out['pass'], $out[$params['pass'][$j]]);
}
}
}
break;
}
}
if (!empty($ext) && !isset($out['url']['ext'])) {
$out['url']['ext'] = $ext;
}
return $out;
}
/**
* Parses a file extension out of a URL, if Router::parseExtensions() is enabled.
*
* @param string $url
* @return array Returns an array containing the altered URL and the parsed extension.
* @access private
*/
private static function __parseExtension($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 = $match;
break;
}
}
}
}
if (empty($ext)) {
$ext = 'html';
}
}
return compact('ext', 'url');
}
/**
* Connects the default, built-in routes, including prefix and plugin routes. The following routes are created
* in the order below:
*
* For each of the Routing.prefixes the following routes are created. Routes containing `:plugin` are only
* created when your application has one or more plugins.
*
* - `/:prefix/:plugin` a plugin shortcut route.
* - `/:prefix/:plugin/:action/*` a plugin shortcut route.
* - `/:prefix/:plugin/:controller`
* - `/:prefix/:plugin/:controller/:action/*`
* - `/:prefix/:controller`
* - `/:prefix/:controller/:action/*`
*
* If plugins are found in your application the following routes are created:
*
* - `/:plugin` a plugin shortcut route.
* - `/:plugin/:action/*` a plugin shortcut route.
* - `/:plugin/:controller`
* - `/:plugin/:controller/:action/*`
*
* And lastly the following catch-all routes are connected.
*
* - `/:controller'
* - `/:controller/:action/*'
*
* You can disable the connection of default routes with Router::defaults().
*
* @return void
* @access private
*/
private static function __connectDefaultRoutes() {
if ($plugins = App::objects('plugin')) {
App::import('Core', 'route/PluginShortRoute');
foreach ($plugins as $key => $value) {
$plugins[$key] = Inflector::underscore($value);
}
$pluginPattern = implode('|', $plugins);
$match = array('plugin' => $pluginPattern);
$shortParams = array('routeClass' => 'PluginShortRoute', 'plugin' => $pluginPattern);
foreach (self::$_prefixes as $prefix) {
$params = array('prefix' => $prefix, $prefix => true);
$indexParams = $params + array('action' => 'index');
self::connect("/{$prefix}/:plugin", $indexParams, $shortParams);
self::connect("/{$prefix}/:plugin/:controller", $indexParams, $match);
self::connect("/{$prefix}/:plugin/:controller/:action/*", $params, $match);
}
self::connect('/:plugin', array('action' => 'index'), $shortParams);
self::connect('/:plugin/:controller', array('action' => 'index'), $match);
self::connect('/:plugin/:controller/:action/*', array(), $match);
}
foreach (self::$_prefixes as $prefix) {
$params = array('prefix' => $prefix, $prefix => true);
$indexParams = $params + array('action' => 'index');
self::connect("/{$prefix}/:controller", $indexParams);
self::connect("/{$prefix}/:controller/:action/*", $params);
}
self::connect('/:controller', array('action' => 'index'));
self::connect('/:controller/:action/*');
if (self::$named['rules'] === false) {
self::connectNamed(true);
}
self::$_defaultsMapped = true;
}
/**
* 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.
*
* Will accept either a CakeRequest object or an array of arrays. Support for
* accepting arrays may be removed in the future.
*
* @param mixed $params Parameters and path information or a CakeRequest object.
* @return void
*/
public static function setRequestInfo($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;
}
}
/**
* 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 ($current) {
return self::$_requests[count(self::$_requests) - 1];
}
return isset(self::$_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 ($current) {
return self::$_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::$_initialState = get_class_vars('Router');
return;
}
foreach (self::$_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 $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 Retuns 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 an URL pointing to a combination of controller and action. Param
* $url can be:
*
* - Empty - the method will find address to actuall 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 `FULL_BASE_URL` constant will be prepended to generated urls.
*
* @param mixed $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 mixed $full If (bool) true, the full base URL will be prepended to the result.
* If an array accepts the following keys
* - escape - used when making urls embedded in html escapes query string '&'
* - full - if true the full base URL will be prepended.
* @return string Full translated URL with base path.
*/
public static function url($url = null, $full = false) {
$defaults = $params = array('plugin' => null, 'controller' => null, 'action' => 'index');
if (is_bool($full)) {
$escape = false;
} else {
extract($full + array('escape' => false, 'full' => false));
}
$path = array('base' => null);
if (!empty(self::$_requests)) {
$currentRequest = self::$_requests[count(self::$_requests) - 1];
if (!empty($currentRequest->params['requested'])) {
$request = self::$_requests[0];
} else {
$request = $currentRequest;
}
$params = $request->params;
$path = array('base' => $request->base, 'here' => $request->here);
}
$base = $path['base'];
$extension = $output = $mapped = $q = $frag = null;
if (empty($url)) {
$output = isset($path['here']) ? $path['here'] : '/';
if ($full && defined('FULL_BASE_URL')) {
$output = FULL_BASE_URL . $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['#'])) {
$frag = '#' . urlencode($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 = $url;
if (isset(self::$routes[$i]->options['persist'], $params)) {
$url = self::$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 (
(strpos($url, '://') ||
(strpos($url, 'javascript:') === 0) ||
(strpos($url, 'mailto:') === 0)) ||
(!strncmp($url, '#', 1))
) {
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 && defined('FULL_BASE_URL')) {
$output = FULL_BASE_URL . $output;
}
if (!empty($extension)) {
$output = rtrim($output, '/');
}
}
return $output . $extension . self::queryString($q, array(), $escape) . $frag;
}
/**
* 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; $i++) {
if (is_numeric($keys[$i])) {
$args[] = $url[$keys[$i]];
} else {
$named[$keys[$i]] = $url[$keys[$i]];
}
}
list($args, $named) = array(Set::filter($args, true), Set::filter($named, true));
foreach (self::$_prefixes as $prefix) {
if (!empty($url[$prefix])) {
$url['action'] = str_replace($prefix . '_', '', $url['action']);
break;
}
}
if (empty($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('/', $args);
}
if (!empty($named)) {
foreach ($named as $name => $value) {
$output .= '/' . $name . self::$named['separator'] . $value;
}
}
return $output;
}
/**
* Takes an array of URL parameters and separates the ones that can be used as named arguments
*
* @param array $params Associative array of URL parameters.
* @param string $controller Name of controller being routed. Used in scoping.
* @param string $action Name of action being routed. Used in scoping.
* @return array
*/
public static function getNamedElements($params, $controller = null, $action = null) {
$named = array();
foreach ($params as $param => $val) {
if (isset(self::$named['rules'][$param])) {
$rule = self::$named['rules'][$param];
if (Router::matchNamed($param, $val, $rule, compact('controller', 'action'))) {
$named[$param] = $val;
unset($params[$param]);
}
}
}
return array($named, $params);
}
/**
* Return true if a given named $param's $val matches a given $rule depending on $context. Currently implemented
* rule types are controller, action and match that can be combined with each other.
*
* @param string $param The name of the named parameter
* @param string $val The value of the named parameter
* @param array $rule The rule(s) to apply, can also be a match string
* @param string $context An array with additional context information (controller / action)
* @return boolean
*/
public static function matchNamed($param, $val, $rule, $context = array()) {
if ($rule === true || $rule === false) {
return $rule;
}
if (is_string($rule)) {
$rule = array('match' => $rule);
}
if (!is_array($rule)) {
return false;
}
$controllerMatches = !isset($rule['controller'], $context['controller']) || in_array($context['controller'], (array)$rule['controller']);
if (!$controllerMatches) {
return false;
}
$actionMatches = !isset($rule['action'], $context['action']) || in_array($context['action'], (array)$rule['action']);
if (!$actionMatches) {
return false;
}
return (!isset($rule['match']) || preg_match('/' . $rule['match'] . '/', $val));
}
/**
* Generates a well-formed querystring from $q
*
* @param mixed $q Query string Either a string of already compiled query string arguments or
* an array of arguments to convert into a query string.
* @param array $extra Extra querystring parameters.
* @param bool $escape Whether or not to use escaped &
* @return array
*/
public static function queryString($q, $extra = array(), $escape = false) {
if (empty($q) && empty($extra)) {
return null;
}
$join = '&';
if ($escape === true) {
$join = '&';
}
$out = '';
if (is_array($q)) {
$q = array_merge($extra, $q);
} else {
$out = $q;
$q = $extra;
}
$out .= http_build_query($q, null, $join);
if (isset($out[0]) && $out[0] != '?') {
$out = '?' . $out;
}
return $out;
}
/**
* Reverses a parsed parameter array into a string. Works similarily to Router::url(), but
* Since parsed URL's contain additional 'pass' and 'named' as well as 'url.url' keys.
* Those keys need to be specially handled in order to reverse a params array into a string url.
*
* This will strip out 'autoRender', 'bare', 'requested', and 'return' param names as those
* are used for CakePHP internals and should not normally be part of an output url.
*
* @param mixed $param The params array or CakeRequest object that needs to be reversed.
* @return string The string that is the reversed result of the array
*/
public static function reverse($params) {
if ($params instanceof CakeRequest) {
$params = $params->params;
}
$pass = $params['pass'];
$named = $params['named'];
$url = $params['url'];
unset(
$params['pass'], $params['named'], $params['paging'], $params['models'], $params['url'], $url['url'],
$params['autoRender'], $params['bare'], $params['requested'], $params['return']
);
$params = array_merge($params, $pass, $named);
if (!empty($url)) {
$params['?'] = $url;
}
return Router::url($params);
}
/**
* Normalizes a URL for purposes of comparison. Will strip the base path off
* and replace any double /'s. It will not unify the casing and underscoring
* of the input value.
*
* @param mixed $url URL to normalize Either an array or a string url.
* @return string Normalized URL
*/
public static function normalize($url = '/') {
if (is_array($url)) {
$url = Router::url($url);
} elseif (preg_match('/^[a-z\-]+:\/\//', $url)) {
return $url;
}
$request = Router::getRequest();
if (!empty($request->base) && stristr($url, $request->base)) {
$url = preg_replace('/^' . preg_quote($request->base, '/') . '/', '', $url, 1);
}
$url = '/' . $url;
while (strpos($url, '//') !== false) {
$url = str_replace('//', '/', $url);
}
$url = preg_replace('/(?:(\/$))/', '', $url);
if (empty($url)) {
return '/';
}
return $url;
}
/**
* Returns the route matching the current request URL.
*
* @return CakeRoute Matching route object.
*/
public static function &requestRoute() {
return self::$_currentRoute[0];
}
/**
* Returns the route matching the current request (useful for requestAction traces)
*
* @return CakeRoute Matching route object.
*/
public static function ¤tRoute() {
return self::$_currentRoute[count(self::$_currentRoute) - 1];
}
/**
* Removes the plugin name from the base URL.
*
* @param string $base Base URL
* @param string $plugin Plugin name
* @return base url with plugin name removed if present
*/
public static function stripPlugin($base, $plugin = null) {
if ($plugin != null) {
$base = preg_replace('/(?:' . $plugin . ')/', '', $base);
$base = str_replace('//', '', $base);
$pos1 = strrpos($base, '/');
$char = strlen($base) - 1;
if ($pos1 === $char) {
$base = substr($base, 0, $char);
}
}
return $base;
}
/**
* Instructs the router to parse out file extensions from the URL. For example,
* http://example.com/posts.rss would yield an file extension of "rss".
* The file extension itself is made available in the controller as
* $this->params['url']['ext'], and is used by the RequestHandler component to
* automatically switch to alternate layouts and templates, and load helpers
* corresponding to the given content, i.e. RssHelper.
*
* A list of valid extension can be passed to this method, i.e. Router::parseExtensions('rss', 'xml');
* If no parameters are given, anything after the first . (dot) after the last / in the URL will be
* parsed, excluding querystring parameters (i.e. ?q=...).
*
* @return void
*/
public static function parseExtensions() {
self::$_parseExtensions = true;
if (func_num_args() > 0) {
self::$_validExtensions = func_get_args();
}
}
/**
* Get the list of extensions that can be parsed by Router. To add more
* extensions use Router::parseExtensions()
*
* @return array Array of extensions Router is configured to parse.
*/
public static function extensions() {
return self::$_validExtensions;
}
/**
* Takes an passed params and converts it to args
*
* @param array $params
* @return array Array containing passed and named parameters
*/
public static function getArgs($args, $options = array()) {
$pass = $named = array();
$args = explode('/', $args);
$greedy = isset($options['greedy']) ? $options['greedy'] : self::$named['greedy'];
$context = array();
if (isset($options['context'])) {
$context = $options['context'];
}
$rules = self::$named['rules'];
if (isset($options['named'])) {
$greedy = isset($options['greedy']) && $options['greedy'] === true;
foreach ((array)$options['named'] as $key => $val) {
if (is_numeric($key)) {
$rules[$val] = true;
continue;
}
$rules[$key] = $val;
}
}
foreach ($args as $param) {
if (empty($param) && $param !== '0' && $param !== 0) {
continue;
}
$separatorIsPresent = strpos($param, self::$named['separator']) !== false;
if ((!isset($options['named']) || !empty($options['named'])) && $separatorIsPresent) {
list($key, $val) = explode(self::$named['separator'], $param, 2);
$hasRule = isset($rules[$key]);
$passIt = (!$hasRule && !$greedy) || ($hasRule && !self::matchNamed($key, $val, $rules[$key], $context));
if ($passIt) {
$pass[] = $param;
} else {
$named[$key] = $val;
}
} else {
$pass[] = $param;
}
}
return compact('pass', 'named');
}
}
//Save the initial state
Router::reload();