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<?php |
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/** |
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* @author Todd Burry <[email protected]> |
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* @copyright 2009-2014 Vanilla Forums Inc. |
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* @license MIT |
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*/ |
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namespace Garden; |
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/** |
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* A route that maps urls to callbacks. |
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*/ |
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class CallbackRoute extends Route { |
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/// Properties /// |
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/** |
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* |
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* @var callable The callback to call on a matching pattern. |
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*/ |
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protected $callback; |
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/// Methods /// |
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/** |
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* Initialize an instance of the {@link CallbackRoute} class. |
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* |
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* @param string $pattern The pattern to match to. |
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* @param callable $callback The callback to call when the url matches. |
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*/ |
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public function __construct($pattern, callable $callback) { |
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$this->pattern($pattern); |
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$this->setCallback($callback); |
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} |
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/** |
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* Dispatch the matched route and call its callback. |
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* |
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* @param Request $request The request to dispatch. |
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* @param array &$args The arguments returned from {@link CallbackRoute::dispatch()}. |
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* @return mixed Returns the result of the callback. |
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*/ |
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public function dispatch(Request $request, array &$args) { |
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$callback = $args['callback']; |
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$callback_args = reflect_args($callback, $args['args']); |
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$result = call_user_func_array($callback, $callback_args); |
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return $result; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function matches(Request $request, Application $app) { |
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if (!$this->matchesMethods($request)) { |
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return null; |
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} |
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if ($this->getMatchFullPath()) { |
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$path = $request->getFullPath(); |
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} else { |
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$path = $request->getPath(); |
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} |
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$regex = $this->getPatternRegex($this->pattern()); |
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if (preg_match($regex, $path, $matches)) { |
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// This route matches so extract the args. |
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$args = array(); |
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foreach ($matches as $key => $value) { |
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if (!is_numeric($key)) { |
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$args[$key] = $value; |
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} |
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} |
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$result = array( |
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'callback' => $this->callback, |
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'args' => $args, |
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); |
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return $result; |
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} else { |
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return null; |
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} |
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} |
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/** |
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* Convert a path pattern into its regex. |
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* |
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* @param string $pattern The route pattern to convert into a regular expression. |
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* @return string Returns the regex pattern for the route. |
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*/ |
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protected function getPatternRegex($pattern) { |
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$result = preg_replace_callback('`{([^}]+)}`i', function ($match) { |
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if (preg_match('`(.*?)([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)(.*?)`', $match[1], $matches)) { |
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$before = preg_quote($matches[1], '`'); |
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$param = $matches[2]; |
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$after = preg_quote($matches[3], '`'); |
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} else { |
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throw new \Exception("Invalid route parameter: $match[1].", 500); |
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} |
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$param_pattern = val($param, $this->conditions, val($param, self::$globalConditions, '[^/]+?')); |
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$result = "(?<$param>$before{$param_pattern}$after)"; |
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return $result; |
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}, $pattern); |
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$result = '`^'.$result.'$`i'; |
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return $result; |
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} |
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/** |
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* Get the callback for the route. |
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* |
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* @return callable Returns the current callback. |
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*/ |
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public function getCallback() { |
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return $this->callback; |
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} |
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/** |
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* Set the callback for the route. |
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* |
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* @param callable $callback The new callback to set. |
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* @return CallbackRoute Retuns $this for fluent calls. |
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*/ |
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public function setCallback(callable $callback) { |
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$this->callback = $callback; |
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return $this; |
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} |
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} |
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vanilla /
garden
