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<?php |
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namespace Anax\MVC; |
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/** |
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* Dispatching to controllers. |
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* |
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*/ |
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class CDispatcherBasic implements \Anax\DI\IInjectionAware |
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{ |
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use \Anax\DI\TInjectionAware; |
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/** |
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* Properties |
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* |
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*/ |
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private $controllerName; // Name of controller |
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private $controller; // Actual controller |
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private $action; // Name of action |
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private $params; // Params |
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/** |
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* Prepare the name. |
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* |
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* @param string $name to prepare. |
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* |
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* @return string as the prepared name. |
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*/ |
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public function prepareName($name) |
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{ |
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$name = empty($name) ? 'index' : $name; |
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$name = strtolower($name); |
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$name = str_replace(['-', '_'], ' ', $name); |
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$name = ucwords($name); |
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$name = str_replace(' ', '', $name); |
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return $name; |
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} |
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/** |
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* Set the name of the controller. |
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* |
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* @param string $name of the controller, defaults to 'index'. |
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* |
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* @return void |
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*/ |
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public function setControllerName($name = 'index') |
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{ |
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$name = $this->prepareName($name) . 'Controller'; |
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$this->controllerName = $name; |
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$this->controller = $this->di->has($name) |
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? $this->di->get($name) |
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: null; |
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} |
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/** |
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* Check if a controller exists with this name. |
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* |
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* @return void |
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*/ |
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public function isValidController() |
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{ |
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return is_object($this->controller); |
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} |
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/** |
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* Set the name of the action. |
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* |
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* @param string $name of the action, defaults to 'index'. |
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* |
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* @return void |
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*/ |
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public function setActionName($name = 'index') |
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{ |
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$this->action = lcfirst($this->prepareName($name)) . 'Action'; |
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} |
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/** |
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* Set the params. |
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* |
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* @param array $params all parameters, defaults to empty. |
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* |
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* @return void |
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*/ |
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public function setParams($params = []) |
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{ |
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$this->params = $params; |
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} |
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/** |
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* Dispatch to a controller, action with parameters. |
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* |
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* @return bool |
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*/ |
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public function isCallable() |
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{ |
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$handler = [$this->controller, $this->action]; |
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if (!method_exists($this->controller, $this->action)) { |
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return false; |
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} |
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$reflection = new \ReflectionMethod($this->controller, $this->action); |
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if (!$reflection->isPublic()) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Inspect if callable and throw exception if parts is not callable. |
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* |
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* @return void. |
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*/ |
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public function isCallableOrException() |
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{ |
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$validController = $this->isValidController(); |
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$isMethod = null; |
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$isCallable = null; |
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if ($validController) { |
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$handler = [$this->controller, $this->action]; |
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$isMethod = method_exists($this->controller, $this->action); |
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$isCallable = $this->isCallable(); |
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} |
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if (!($isMethod && $isCallable)) { |
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$msg = |
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"Trying to dispatch/forward to a non callable item. Controllername = '" |
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. $this->controllerName |
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. "', Action = '" |
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. $this->action |
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. "'." |
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; |
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$not = $validController ? "" : "NOT"; |
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$msg .= |
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" The controller named '$this->controllerName' does $not exist as part of of the |
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service-container \$di. |
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"; |
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$services = $this->di->getServices(); |
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natcasesort($services); |
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$services = implode("\n", $services); |
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$msg .= " Loaded services are: <pre>$services</pre>\n"; |
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if ($validController) { |
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$not = $isMethod ? "" : "NOT"; |
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$msg .= " The method '$this->action' does $not exist in the class '$this->controllerName'."; |
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$not = $isCallable ? "" : "NOT"; |
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$msg .= |
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" The method '$this->action' is $not callable in the class '$this->controllerName' |
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(taking magic methods into consideration)."; |
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} |
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throw new \Exception($msg); |
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} |
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} |
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/** |
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* Dispatch to a controller, action with parameters. |
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* |
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* @return mixed result from dispatched controller action. |
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*/ |
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public function dispatch() |
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{ |
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$handler = [$this->controller, 'initialize']; |
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if (method_exists($this->controller, 'initialize') && is_callable($handler)) { |
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call_user_func($handler); |
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} |
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$this->isCallableOrException(); |
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return call_user_func_array([$this->controller, $this->action], $this->params); |
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} |
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/** |
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* Forward to a controller, action with parameters. |
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* |
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* @param array $forward with details for controller, action, parameters. |
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* |
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* @return mixed result from dispatched controller action. |
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*/ |
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public function forward($forward = []) |
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{ |
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$controller = isset($forward['controller']) |
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? $forward['controller'] |
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: null; |
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$action = isset($forward['action']) |
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? $forward['action'] |
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: null; |
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$params = isset($forward['params']) |
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? $forward['params'] |
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: []; |
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$this->setControllerName($controller); |
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$this->setActionName($action); |
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$this->setParams($params); |
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$this->isCallableOrException(); |
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return $this->dispatch(); |
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} |
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} |
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This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.