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<?php |
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namespace HakimCh\Http; |
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use Iterator; |
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class Router |
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{ |
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protected $routes = []; |
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protected $namedRoutes = []; |
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protected $basePath = ''; |
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protected $all = ['get', 'post']; |
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protected $server; |
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/** |
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* @var RouterParser |
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*/ |
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private $parser; |
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/** |
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* Create router in one call from config. |
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* |
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* @param RouterParser $parser |
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* @param array $routes |
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* @param string $basePath |
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* @param array|null $server |
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*/ |
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public function __construct(RouterParser $parser, $routes = [], $basePath = '', $server = null) |
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{ |
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$this->setRoutes($routes); |
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$this->setBasePath($basePath); |
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$this->parser = $parser; |
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$this->server = $server; |
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} |
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/** |
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* Map a route to a target |
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* |
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* @param string $method One of 5 HTTP Methods, or a pipe-separated list of multiple HTTP Methods (GET|POST|PATCH|PUT|DELETE) |
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* @param string $route The route regex, custom regex must start with an @. You can use multiple pre-set regex filters, like [i:id] |
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* @param mixed $target The target where this route should point to. Can be anything. |
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* @param string $routeName Optional name of this route. Supply if you want to reverse route this url in your application. |
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*/ |
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public function map($method, $route, $target, $routeName = null) |
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{ |
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if (is_string($routeName)) { |
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$this->handleException($routeName, "Can not redeclare route '%s'", true); |
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$this->namedRoutes[$routeName] = $route; |
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} |
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$this->routes[] = array($method, $route, $target, $routeName); |
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} |
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/** |
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* Reversed routing |
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* Generate the URL for a named route. Replace regexes with supplied parameters |
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* |
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* @param string $routeName The name of the route. |
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* @param array $params Associative array of parameters to replace placeholders with. |
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* |
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* @return string The URL of the route with named parameters in place. |
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*/ |
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public function generate($routeName, array $params = []) |
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{ |
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$this->handleException($routeName, "Route '%s' does not exist.", false); |
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$route = $this->namedRoutes[$routeName]; |
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return $this->parser->generateUrl($this->basePath, $route, $params); |
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} |
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/** |
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* Match a given Request Url against stored routes |
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* @param string $requestUrl |
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* @param string $requestMethod |
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* |
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* @return array|boolean Array with route information on success, false on failure (no match). |
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*/ |
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public function match($requestUrl = null, $requestMethod = null) |
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{ |
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$requestUrl = $this->getRequestUrl($requestUrl); |
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// set Request Method if it isn't passed as a parameter |
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if (is_null($requestMethod)) { |
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$requestMethod = $this->server['REQUEST_METHOD']; |
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} |
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foreach ($this->routes as $handler) { |
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if (!$this->parser->methodMatch($handler[0], $requestMethod, $handler[1], $requestUrl)) { |
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continue; |
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} |
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return array( |
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'target' => $handler[2], |
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'params' => array_filter($this->parser->getParams(), function ($k) { |
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return !is_numeric($k); |
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}, ARRAY_FILTER_USE_KEY), |
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'name' => $handler[3] |
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); |
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} |
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return false; |
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} |
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/** |
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* @param $method |
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* @param $arguments |
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* |
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* @throws RouterException |
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*/ |
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public function __call($method, $arguments) |
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{ |
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if (!in_array($method, array('get', 'post', 'delete', 'put', 'patch', 'update', 'all'))) { |
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throw new RouterException($method . ' not exist in the '. __CLASS__); |
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} |
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$methods = $method == 'all' ? implode('|', $this->all) : $method; |
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$route = array_merge([$methods], $arguments); |
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call_user_func_array([$this, 'map'], $route); |
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} |
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/** |
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* Retrieves all routes. |
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* Useful if you want to process or display routes. |
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* |
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* @return array All routes. |
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*/ |
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public function getRoutes() |
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{ |
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return $this->routes; |
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} |
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/** |
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* Add multiple routes at once from array in the following format: |
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* |
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* $routes = array( |
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* array($method, $route, $target, $name) |
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* ); |
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* |
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* @param array|Iterator $routes |
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* |
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* @return void |
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*/ |
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public function setRoutes($routes) |
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{ |
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if (!is_array($routes) && !$routes instanceof Iterator) { |
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throw new RouterException('Routes should be an array or an instance of Iterator'); |
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} |
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if (!empty($routes)) { |
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foreach ($routes as $route) { |
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call_user_func_array(array($this, 'map'), $route); |
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} |
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} |
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} |
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/** |
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* Set the base path. |
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* Useful if you are running your application from a subdirectory. |
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* |
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* @param $basePath |
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*/ |
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public function setBasePath($basePath) |
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{ |
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$this->basePath = $basePath; |
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} |
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/** |
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* @param $routeName |
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* @param $message |
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* @param bool $cmpTo |
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* |
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* @throws RouterException |
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*/ |
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private function handleException($routeName, $message, $cmpTo) |
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{ |
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if (array_key_exists($routeName, $this->namedRoutes) === $cmpTo) { |
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throw new RouterException(sprintf($message, $routeName)); |
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} |
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} |
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/** |
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* @param $requestUrl |
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* |
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* @return mixed |
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*/ |
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private function getRequestUrl($requestUrl = null) |
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{ |
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// set Request Url if it isn't passed as parameter |
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if (is_null($requestUrl)) { |
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$requestUrl = parse_url($this->server['REQUEST_URI'], PHP_URL_PATH); |
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} |
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return str_replace($this->basePath, '', strtok($requestUrl, '?')); |
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} |
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/** |
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* @return RouterParser |
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*/ |
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public function getParser() |
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{ |
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return $this->parser; |
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} |
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public function getNamedRoutes() |
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{ |
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return $this->namedRoutes; |
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} |
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public function getBasePath() |
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{ |
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return $this->basePath; |
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} |
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public function setServer($server) |
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{ |
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$this->server = $server; |
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} |
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} |
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