pictcode / lib / Cake / Routing / Route / CakeRoute.php @ 22fd3a57
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| 1 | 635eef61 | spyder1211 | <?php
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| 2 | /**
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| 3 | * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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| 4 | * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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| 5 | *
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| 6 | * Licensed under The MIT License
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| 7 | * For full copyright and license information, please see the LICENSE.txt
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| 8 | * Redistributions of files must retain the above copyright notice.
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| 9 | *
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| 10 | * @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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| 11 | * @link http://cakephp.org CakePHP(tm) Project
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| 12 | * @since CakePHP(tm) v 1.3
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| 13 | * @license http://www.opensource.org/licenses/mit-license.php MIT License
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| 14 | */
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| 15 | |||
| 16 | App::uses('Hash', 'Utility'); |
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| 17 | |||
| 18 | /**
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| 19 | * A single Route used by the Router to connect requests to
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| 20 | * parameter maps.
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| 21 | *
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| 22 | * Not normally created as a standalone. Use Router::connect() to create
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| 23 | * Routes for your application.
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| 24 | *
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| 25 | * @package Cake.Routing.Route
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| 26 | */
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| 27 | class CakeRoute { |
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| 28 | |||
| 29 | /**
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| 30 | * An array of named segments in a Route.
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| 31 | * `/:controller/:action/:id` has 3 key elements
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| 32 | *
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| 33 | * @var array
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| 34 | */
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| 35 | public $keys = array(); |
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| 36 | |||
| 37 | /**
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| 38 | * An array of additional parameters for the Route.
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| 39 | *
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| 40 | * @var array
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| 41 | */
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| 42 | public $options = array(); |
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| 43 | |||
| 44 | /**
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| 45 | * Default parameters for a Route
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| 46 | *
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| 47 | * @var array
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| 48 | */
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| 49 | public $defaults = array(); |
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| 50 | |||
| 51 | /**
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| 52 | * The routes template string.
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| 53 | *
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| 54 | * @var string
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| 55 | */
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| 56 | public $template = null; |
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| 57 | |||
| 58 | /**
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| 59 | * Is this route a greedy route? Greedy routes have a `/*` in their
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| 60 | * template
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| 61 | *
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| 62 | * @var string
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| 63 | */
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| 64 | protected $_greedy = false; |
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| 65 | |||
| 66 | /**
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| 67 | * The compiled route regular expression
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| 68 | *
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| 69 | * @var string
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| 70 | */
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| 71 | protected $_compiledRoute = null; |
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| 72 | |||
| 73 | /**
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| 74 | * HTTP header shortcut map. Used for evaluating header-based route expressions.
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| 75 | *
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| 76 | * @var array
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| 77 | */
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| 78 | protected $_headerMap = array( |
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| 79 | 'type' => 'content_type', |
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| 80 | 'method' => 'request_method', |
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| 81 | 'server' => 'server_name' |
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| 82 | ); |
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| 83 | |||
| 84 | /**
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| 85 | * Constructor for a Route
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| 86 | *
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| 87 | * @param string $template Template string with parameter placeholders
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| 88 | * @param array $defaults Array of defaults for the route.
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| 89 | * @param array $options Array of additional options for the Route
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| 90 | */
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| 91 | public function __construct($template, $defaults = array(), $options = array()) { |
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| 92 | $this->template = $template; |
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| 93 | $this->defaults = (array)$defaults; |
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| 94 | $this->options = (array)$options; |
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| 95 | } |
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| 96 | |||
| 97 | /**
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| 98 | * Check if a Route has been compiled into a regular expression.
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| 99 | *
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| 100 | * @return bool
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| 101 | */
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| 102 | public function compiled() { |
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| 103 | return !empty($this->_compiledRoute); |
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| 104 | } |
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| 105 | |||
| 106 | /**
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| 107 | * Compiles the route's regular expression.
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| 108 | *
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| 109 | * Modifies defaults property so all necessary keys are set
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| 110 | * and populates $this->names with the named routing elements.
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| 111 | *
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| 112 | * @return array Returns a string regular expression of the compiled route.
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| 113 | */
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| 114 | public function compile() { |
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| 115 | if ($this->compiled()) { |
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| 116 | return $this->_compiledRoute; |
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| 117 | } |
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| 118 | $this->_writeRoute();
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| 119 | return $this->_compiledRoute; |
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| 120 | } |
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| 121 | |||
| 122 | /**
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| 123 | * Builds a route regular expression.
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| 124 | *
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| 125 | * Uses the template, defaults and options properties to compile a
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| 126 | * regular expression that can be used to parse request strings.
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| 127 | *
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| 128 | * @return void
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| 129 | */
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| 130 | protected function _writeRoute() { |
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| 131 | if (empty($this->template) || ($this->template === '/')) { |
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| 132 | $this->_compiledRoute = '#^/*$#'; |
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| 133 | $this->keys = array(); |
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| 134 | return;
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| 135 | } |
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| 136 | $route = $this->template; |
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| 137 | $names = $routeParams = array(); |
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| 138 | $parsed = preg_quote($this->template, '#'); |
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| 139 | |||
| 140 | preg_match_all('#:([A-Za-z0-9_-]+[A-Z0-9a-z])#', $route, $namedElements); |
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| 141 | foreach ($namedElements[1] as $i => $name) { |
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| 142 | $search = '\\' . $namedElements[0][$i]; |
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| 143 | if (isset($this->options[$name])) { |
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| 144 | $option = null; |
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| 145 | if ($name !== 'plugin' && array_key_exists($name, $this->defaults)) { |
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| 146 | $option = '?'; |
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| 147 | } |
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| 148 | $slashParam = '/\\' . $namedElements[0][$i]; |
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| 149 | if (strpos($parsed, $slashParam) !== false) { |
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| 150 | $routeParams[$slashParam] = '(?:/(?P<' . $name . '>' . $this->options[$name] . ')' . $option . ')' . $option; |
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| 151 | } else {
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| 152 | $routeParams[$search] = '(?:(?P<' . $name . '>' . $this->options[$name] . ')' . $option . ')' . $option; |
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| 153 | } |
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| 154 | } else {
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| 155 | $routeParams[$search] = '(?:(?P<' . $name . '>[^/]+))'; |
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| 156 | } |
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| 157 | $names[] = $name; |
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| 158 | } |
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| 159 | if (preg_match('#\/\*\*$#', $route)) { |
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| 160 | $parsed = preg_replace('#/\\\\\*\\\\\*$#', '(?:/(?P<_trailing_>.*))?', $parsed); |
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| 161 | $this->_greedy = true; |
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| 162 | } |
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| 163 | if (preg_match('#\/\*$#', $route)) { |
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| 164 | $parsed = preg_replace('#/\\\\\*$#', '(?:/(?P<_args_>.*))?', $parsed); |
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| 165 | $this->_greedy = true; |
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| 166 | } |
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| 167 | krsort($routeParams); |
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| 168 | $parsed = str_replace(array_keys($routeParams), array_values($routeParams), $parsed); |
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| 169 | $this->_compiledRoute = '#^' . $parsed . '[/]*$#'; |
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| 170 | $this->keys = $names; |
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| 171 | |||
| 172 | // Remove defaults that are also keys. They can cause match failures
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| 173 | foreach ($this->keys as $key) { |
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| 174 | unset($this->defaults[$key]); |
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| 175 | } |
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| 176 | |||
| 177 | $keys = $this->keys; |
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| 178 | sort($keys); |
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| 179 | $this->keys = array_reverse($keys); |
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| 180 | } |
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| 181 | |||
| 182 | /**
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| 183 | * Checks to see if the given URL can be parsed by this route.
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| 184 | *
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| 185 | * If the route can be parsed an array of parameters will be returned; if not
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| 186 | * false will be returned. String URLs are parsed if they match a routes regular expression.
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| 187 | *
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| 188 | * @param string $url The URL to attempt to parse.
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| 189 | * @return mixed Boolean false on failure, otherwise an array or parameters
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| 190 | */
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| 191 | public function parse($url) { |
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| 192 | if (!$this->compiled()) { |
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| 193 | $this->compile();
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| 194 | } |
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| 195 | if (!preg_match($this->_compiledRoute, urldecode($url), $route)) { |
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| 196 | return false; |
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| 197 | } |
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| 198 | foreach ($this->defaults as $key => $val) { |
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| 199 | $key = (string)$key; |
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| 200 | if ($key[0] === '[' && preg_match('/^\[(\w+)\]$/', $key, $header)) { |
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| 201 | if (isset($this->_headerMap[$header[1]])) { |
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| 202 | $header = $this->_headerMap[$header[1]]; |
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| 203 | } else {
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| 204 | $header = 'http_' . $header[1]; |
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| 205 | } |
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| 206 | $header = strtoupper($header); |
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| 207 | |||
| 208 | $val = (array)$val; |
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| 209 | $h = false; |
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| 210 | |||
| 211 | foreach ($val as $v) { |
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| 212 | if (env($header) === $v) { |
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| 213 | $h = true; |
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| 214 | } |
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| 215 | } |
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| 216 | if (!$h) { |
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| 217 | return false; |
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| 218 | } |
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| 219 | } |
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| 220 | } |
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| 221 | array_shift($route); |
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| 222 | $count = count($this->keys); |
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| 223 | for ($i = 0; $i <= $count; $i++) { |
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| 224 | unset($route[$i]); |
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| 225 | } |
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| 226 | $route['pass'] = $route['named'] = array(); |
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| 227 | |||
| 228 | // Assign defaults, set passed args to pass
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| 229 | foreach ($this->defaults as $key => $value) { |
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| 230 | if (isset($route[$key])) { |
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| 231 | continue;
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| 232 | } |
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| 233 | if (is_int($key)) { |
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| 234 | $route['pass'][] = $value; |
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| 235 | continue;
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| 236 | } |
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| 237 | $route[$key] = $value; |
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| 238 | } |
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| 239 | |||
| 240 | if (isset($route['_args_'])) { |
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| 241 | list($pass, $named) = $this->_parseArgs($route['_args_'], $route); |
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| 242 | $route['pass'] = array_merge($route['pass'], $pass); |
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| 243 | $route['named'] = $named; |
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| 244 | unset($route['_args_']); |
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| 245 | } |
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| 246 | |||
| 247 | if (isset($route['_trailing_'])) { |
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| 248 | $route['pass'][] = $route['_trailing_']; |
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| 249 | unset($route['_trailing_']); |
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| 250 | } |
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| 251 | |||
| 252 | // restructure 'pass' key route params
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| 253 | if (isset($this->options['pass'])) { |
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| 254 | $j = count($this->options['pass']); |
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| 255 | while ($j--) { |
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| 256 | if (isset($route[$this->options['pass'][$j]])) { |
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| 257 | array_unshift($route['pass'], $route[$this->options['pass'][$j]]); |
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| 258 | } |
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| 259 | } |
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| 260 | } |
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| 261 | return $route; |
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| 262 | } |
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| 263 | |||
| 264 | /**
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| 265 | * Parse passed and Named parameters into a list of passed args, and a hash of named parameters.
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| 266 | * The local and global configuration for named parameters will be used.
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| 267 | *
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| 268 | * @param string $args A string with the passed & named params. eg. /1/page:2
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| 269 | * @param string $context The current route context, which should contain controller/action keys.
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| 270 | * @return array Array of ($pass, $named)
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| 271 | */
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| 272 | protected function _parseArgs($args, $context) { |
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| 273 | $pass = $named = array(); |
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| 274 | $args = explode('/', $args); |
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| 275 | |||
| 276 | $namedConfig = Router::namedConfig(); |
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| 277 | $greedy = $namedConfig['greedyNamed']; |
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| 278 | $rules = $namedConfig['rules']; |
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| 279 | if (!empty($this->options['named'])) { |
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| 280 | $greedy = isset($this->options['greedyNamed']) && $this->options['greedyNamed'] === true; |
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| 281 | foreach ((array)$this->options['named'] as $key => $val) { |
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| 282 | if (is_numeric($key)) { |
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| 283 | $rules[$val] = true; |
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| 284 | continue;
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| 285 | } |
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| 286 | $rules[$key] = $val; |
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| 287 | } |
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| 288 | } |
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| 289 | |||
| 290 | foreach ($args as $param) { |
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| 291 | if (empty($param) && $param !== '0' && $param !== 0) { |
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| 292 | continue;
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| 293 | } |
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| 294 | |||
| 295 | $separatorIsPresent = strpos($param, $namedConfig['separator']) !== false; |
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| 296 | if ((!isset($this->options['named']) || !empty($this->options['named'])) && $separatorIsPresent) { |
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| 297 | list($key, $val) = explode($namedConfig['separator'], $param, 2); |
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| 298 | $hasRule = isset($rules[$key]); |
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| 299 | $passIt = (!$hasRule && !$greedy) || ($hasRule && !$this->_matchNamed($val, $rules[$key], $context)); |
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| 300 | if ($passIt) { |
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| 301 | $pass[] = $param; |
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| 302 | } else {
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| 303 | if (preg_match_all('/\[([A-Za-z0-9_-]+)?\]/', $key, $matches, PREG_SET_ORDER)) { |
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| 304 | $matches = array_reverse($matches); |
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| 305 | $parts = explode('[', $key); |
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| 306 | $key = array_shift($parts); |
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| 307 | $arr = $val; |
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| 308 | foreach ($matches as $match) { |
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| 309 | if (empty($match[1])) { |
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| 310 | $arr = array($arr); |
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| 311 | } else {
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| 312 | $arr = array( |
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| 313 | $match[1] => $arr |
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| 314 | ); |
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| 315 | } |
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| 316 | } |
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| 317 | $val = $arr; |
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| 318 | } |
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| 319 | $named = array_merge_recursive($named, array($key => $val)); |
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| 320 | } |
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| 321 | } else {
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| 322 | $pass[] = $param; |
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| 323 | } |
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| 324 | } |
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| 325 | return array($pass, $named); |
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| 326 | } |
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| 327 | |||
| 328 | /**
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| 329 | * Check if a named parameter matches the current rules.
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| 330 | *
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| 331 | * Return true if a given named $param's $val matches a given $rule depending on $context.
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| 332 | * Currently implemented rule types are controller, action and match that can be combined with each other.
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| 333 | *
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| 334 | * @param string $val The value of the named parameter
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| 335 | * @param array $rule The rule(s) to apply, can also be a match string
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| 336 | * @param string $context An array with additional context information (controller / action)
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| 337 | * @return bool
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| 338 | */
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| 339 | protected function _matchNamed($val, $rule, $context) { |
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| 340 | if ($rule === true || $rule === false) { |
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| 341 | return $rule; |
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| 342 | } |
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| 343 | if (is_string($rule)) { |
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| 344 | $rule = array('match' => $rule); |
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| 345 | } |
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| 346 | if (!is_array($rule)) { |
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| 347 | return false; |
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| 348 | } |
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| 349 | |||
| 350 | $controllerMatches = (
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| 351 | !isset($rule['controller'], $context['controller']) || |
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| 352 | in_array($context['controller'], (array)$rule['controller']) |
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| 353 | ); |
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| 354 | if (!$controllerMatches) { |
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| 355 | return false; |
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| 356 | } |
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| 357 | $actionMatches = (
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| 358 | !isset($rule['action'], $context['action']) || |
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| 359 | in_array($context['action'], (array)$rule['action']) |
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| 360 | ); |
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| 361 | if (!$actionMatches) { |
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| 362 | return false; |
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| 363 | } |
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| 364 | return (!isset($rule['match']) || preg_match('/' . $rule['match'] . '/', $val)); |
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| 365 | } |
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| 366 | |||
| 367 | /**
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| 368 | * Apply persistent parameters to a URL array. Persistent parameters are a special
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| 369 | * key used during route creation to force route parameters to persist when omitted from
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| 370 | * a URL array.
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| 371 | *
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| 372 | * @param array $url The array to apply persistent parameters to.
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| 373 | * @param array $params An array of persistent values to replace persistent ones.
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| 374 | * @return array An array with persistent parameters applied.
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| 375 | */
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| 376 | public function persistParams($url, $params) { |
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| 377 | if (empty($this->options['persist']) || !is_array($this->options['persist'])) { |
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| 378 | return $url; |
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| 379 | } |
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| 380 | foreach ($this->options['persist'] as $persistKey) { |
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| 381 | if (array_key_exists($persistKey, $params) && !isset($url[$persistKey])) { |
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| 382 | $url[$persistKey] = $params[$persistKey]; |
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| 383 | } |
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| 384 | } |
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| 385 | return $url; |
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| 386 | } |
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| 387 | |||
| 388 | /**
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| 389 | * Check if a URL array matches this route instance.
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| 390 | *
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| 391 | * If the URL matches the route parameters and settings, then
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| 392 | * return a generated string URL. If the URL doesn't match the route parameters, false will be returned.
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| 393 | * This method handles the reverse routing or conversion of URL arrays into string URLs.
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| 394 | *
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| 395 | * @param array $url An array of parameters to check matching with.
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| 396 | * @return mixed Either a string URL for the parameters if they match or false.
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| 397 | */
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| 398 | public function match($url) { |
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| 399 | if (!$this->compiled()) { |
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| 400 | $this->compile();
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| 401 | } |
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| 402 | $defaults = $this->defaults; |
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| 403 | |||
| 404 | if (isset($defaults['prefix'])) { |
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| 405 | $url['prefix'] = $defaults['prefix']; |
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| 406 | } |
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| 407 | |||
| 408 | //check that all the key names are in the url
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| 409 | $keyNames = array_flip($this->keys); |
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| 410 | if (array_intersect_key($keyNames, $url) !== $keyNames) { |
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| 411 | return false; |
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| 412 | } |
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| 413 | |||
| 414 | // Missing defaults is a fail.
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| 415 | if (array_diff_key($defaults, $url) !== array()) { |
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| 416 | return false; |
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| 417 | } |
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| 418 | |||
| 419 | $namedConfig = Router::namedConfig(); |
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| 420 | $prefixes = Router::prefixes(); |
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| 421 | $greedyNamed = $namedConfig['greedyNamed']; |
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| 422 | $allowedNamedParams = $namedConfig['rules']; |
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| 423 | |||
| 424 | $named = $pass = array(); |
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| 425 | |||
| 426 | foreach ($url as $key => $value) { |
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| 427 | // keys that exist in the defaults and have different values is a match failure.
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| 428 | $defaultExists = array_key_exists($key, $defaults); |
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| 429 | if ($defaultExists && $defaults[$key] != $value) { |
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| 430 | return false; |
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| 431 | } elseif ($defaultExists) { |
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| 432 | continue;
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| 433 | } |
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| 434 | |||
| 435 | // If the key is a routed key, its not different yet.
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| 436 | if (array_key_exists($key, $keyNames)) { |
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| 437 | continue;
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| 438 | } |
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| 439 | |||
| 440 | // pull out passed args
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| 441 | $numeric = is_numeric($key); |
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| 442 | if ($numeric && isset($defaults[$key]) && $defaults[$key] == $value) { |
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| 443 | continue;
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| 444 | } elseif ($numeric) { |
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| 445 | $pass[] = $value; |
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| 446 | unset($url[$key]); |
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| 447 | continue;
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| 448 | } |
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| 449 | |||
| 450 | // pull out named params if named params are greedy or a rule exists.
|
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| 451 | if (($greedyNamed || isset($allowedNamedParams[$key])) && |
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| 452 | ($value !== false && $value !== null) && |
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| 453 | (!in_array($key, $prefixes)) |
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| 454 | ) {
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| 455 | $named[$key] = $value; |
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| 456 | continue;
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| 457 | } |
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| 458 | |||
| 459 | // keys that don't exist are different.
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| 460 | if (!$defaultExists && !empty($value)) { |
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| 461 | return false; |
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| 462 | } |
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| 463 | } |
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| 464 | |||
| 465 | //if a not a greedy route, no extra params are allowed.
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| 466 | if (!$this->_greedy && (!empty($pass) || !empty($named))) { |
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| 467 | return false; |
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| 468 | } |
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| 469 | |||
| 470 | //check patterns for routed params
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| 471 | if (!empty($this->options)) { |
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| 472 | foreach ($this->options as $key => $pattern) { |
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| 473 | if (array_key_exists($key, $url) && !preg_match('#^' . $pattern . '$#', $url[$key])) { |
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| 474 | return false; |
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| 475 | } |
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| 476 | } |
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| 477 | } |
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| 478 | return $this->_writeUrl(array_merge($url, compact('pass', 'named'))); |
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| 479 | } |
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| 480 | |||
| 481 | /**
|
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| 482 | * Converts a matching route array into a URL string.
|
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| 483 | *
|
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| 484 | * Composes the string URL using the template
|
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| 485 | * used to create the route.
|
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| 486 | *
|
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| 487 | * @param array $params The params to convert to a string URL.
|
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| 488 | * @return string Composed route string.
|
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| 489 | */
|
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| 490 | protected function _writeUrl($params) { |
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| 491 | if (isset($params['prefix'])) { |
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| 492 | $prefixed = $params['prefix'] . '_'; |
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| 493 | } |
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| 494 | if (isset($prefixed, $params['action']) && strpos($params['action'], $prefixed) === 0) { |
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| 495 | $params['action'] = substr($params['action'], strlen($prefixed)); |
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| 496 | unset($params['prefix']); |
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| 497 | } |
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| 498 | |||
| 499 | if (is_array($params['pass'])) { |
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| 500 | $params['pass'] = implode('/', array_map('rawurlencode', $params['pass'])); |
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| 501 | } |
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| 502 | |||
| 503 | $namedConfig = Router::namedConfig(); |
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| 504 | $separator = $namedConfig['separator']; |
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| 505 | |||
| 506 | if (!empty($params['named']) && is_array($params['named'])) { |
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| 507 | $named = array(); |
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| 508 | foreach ($params['named'] as $key => $value) { |
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| 509 | if (is_array($value)) { |
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| 510 | $flat = Hash::flatten($value, '%5D%5B'); |
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| 511 | foreach ($flat as $namedKey => $namedValue) { |
||
| 512 | $named[] = $key . "%5B{$namedKey}%5D" . $separator . rawurlencode($namedValue); |
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| 513 | } |
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| 514 | } else {
|
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| 515 | $named[] = $key . $separator . rawurlencode($value); |
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| 516 | } |
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| 517 | } |
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| 518 | $params['pass'] = $params['pass'] . '/' . implode('/', $named); |
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| 519 | } |
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| 520 | $out = $this->template; |
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| 521 | |||
| 522 | if (!empty($this->keys)) { |
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| 523 | $search = $replace = array(); |
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| 524 | |||
| 525 | foreach ($this->keys as $key) { |
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| 526 | $string = null; |
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| 527 | if (isset($params[$key])) { |
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| 528 | $string = $params[$key]; |
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| 529 | } elseif (strpos($out, $key) != strlen($out) - strlen($key)) { |
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| 530 | $key .= '/'; |
||
| 531 | } |
||
| 532 | $search[] = ':' . $key; |
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| 533 | $replace[] = $string; |
||
| 534 | } |
||
| 535 | $out = str_replace($search, $replace, $out); |
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| 536 | } |
||
| 537 | |||
| 538 | if (strpos($this->template, '**') !== false) { |
||
| 539 | $out = str_replace('**', $params['pass'], $out); |
||
| 540 | $out = str_replace('%2F', '/', $out); |
||
| 541 | } elseif (strpos($this->template, '*') !== false) { |
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| 542 | $out = str_replace('*', $params['pass'], $out); |
||
| 543 | } |
||
| 544 | $out = str_replace('//', '/', $out); |
||
| 545 | return $out; |
||
| 546 | } |
||
| 547 | |||
| 548 | /**
|
||
| 549 | * Set state magic method to support var_export
|
||
| 550 | *
|
||
| 551 | * This method helps for applications that want to implement
|
||
| 552 | * router caching.
|
||
| 553 | *
|
||
| 554 | * @param array $fields Key/Value of object attributes
|
||
| 555 | * @return CakeRoute A new instance of the route
|
||
| 556 | */
|
||
| 557 | public static function __set_state($fields) { |
||
| 558 | $class = function_exists('get_called_class') ? get_called_class() : __CLASS__; |
||
| 559 | $obj = new $class(''); |
||
| 560 | foreach ($fields as $field => $value) { |
||
| 561 | $obj->$field = $value; |
||
| 562 | } |
||
| 563 | return $obj; |
||
| 564 | } |
||
| 565 | |||
| 566 | } |