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<?php |
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declare(strict_types=1); |
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namespace Kambo\Router\Dispatcher; |
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// \Spl |
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use Closure; |
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use InvalidArgumentException; |
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use ReflectionFunction; |
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// \Kambo\Router |
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use Kambo\Router\Dispatcher; |
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use Kambo\Router\Route\Route\Parsed; |
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/** |
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* Dispatcher with closure support |
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* |
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* @package Kambo\Router\Dispatcher |
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* @author Bohuslav Simek <[email protected]> |
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* @license MIT |
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*/ |
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class ClosureAutoBind implements Dispatcher |
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{ |
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/** |
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* Not found handler will be called if nothing has been found. |
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* |
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* @var \Closure |
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*/ |
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private $notFoundHandler; |
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/** |
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* Dispatch found route with given parameters |
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* |
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* @param \Kambo\Router\Route\Route\Parsed $route Instance of found and parsed route. |
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* @param array $parameters Additional parameters. |
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* |
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* @return mixed|null |
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*/ |
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public function dispatchRoute(Parsed $route, array $parameters = []) |
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{ |
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$handler = $route->getHandler(); |
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if ($this->isClosure($handler)) { |
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$paramMap = $this->getFunctionArgumentsNames($handler); |
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$arguments = $this->getFunctionArguments( |
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$paramMap, |
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$route->getParameters(), |
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$route->getPlaceholders() |
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); |
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return call_user_func_array($handler, $arguments); |
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} |
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return $this->dispatchNotFound(); |
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} |
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/** |
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* Called if any of route did not match the request. |
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* Call the defined handler or simply do nothing if the handler is not |
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* specified. |
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* |
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* @return mixed|null |
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*/ |
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public function dispatchNotFound() |
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{ |
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if (isset($this->notFoundHandler)) { |
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return call_user_func($this->notFoundHandler); |
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} |
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return null; |
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} |
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/** |
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* Sets not found handler |
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* |
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* @param Closure $handler handler that will be excuted if nothing has been |
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* found |
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* |
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* @return self for fluent interface |
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* |
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* @throws InvalidArgumentException if the provided value is not closure |
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*/ |
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public function setNotFoundHandler($handler) : ClosureAutoBind |
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{ |
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if (!$this->isClosure($handler)) { |
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throw new InvalidArgumentException( |
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'Handler must be closure' |
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); |
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} |
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$this->notFoundHandler = $handler; |
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return $this; |
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} |
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// ------------ PRIVATE METHODS |
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/** |
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* Check if variable is closure |
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* |
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* @param mixed $type variable to check |
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* |
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* @return boolean return true if is |
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*/ |
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private function isClosure($type) : bool |
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{ |
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return is_object($type) && ($type instanceof Closure); |
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} |
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/** |
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* Get arguments for closure function in proper order |
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* from provided parameters |
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* |
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* @param array $paramMap parameter map for getting proper order |
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* @param array $matches parameters from request |
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* @param array $parameters expected parameters from route |
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* |
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* @return array Parameters in right order, if there are not any |
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* parametrs an empty array is returned. |
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*/ |
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private function getFunctionArguments(array $paramMap, array $matches, array $parameters) : array |
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{ |
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$output = []; |
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$matches = array_values($matches); |
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View Code Duplication |
foreach ($parameters as $valueName) { |
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foreach ($paramMap as $possition => $value) { |
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if ($value == $valueName[1][0]) { |
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$output[] = $matches[$possition]; |
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} |
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} |
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} |
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return $output; |
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} |
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/** |
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* Get name of parameters for provided closure |
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* |
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* @param \Closure $closure |
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* |
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* @return array |
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*/ |
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7 |
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private function getFunctionArgumentsNames($closure) : array |
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{ |
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$result = []; |
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7 |
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$closureReflection = new ReflectionFunction($closure); |
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foreach ($closureReflection->getParameters() as $param) { |
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$result[] = $param->name; |
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} |
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return $result; |
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} |
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} |
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kambo-1st /
KamboRouter
