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<?php |
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/** |
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* slince routing library |
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* @author Tao <[email protected]> |
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*/ |
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namespace Slince\Routing; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Slince\Routing\Exception\RouteNotFoundException; |
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use Slince\Routing\Exception\MethodNotAllowedException; |
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class Matcher |
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{ |
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/** |
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* Routes collection |
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* @var RouteCollection |
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*/ |
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protected $routes; |
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public function __construct(RouteCollection $routes) |
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{ |
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$this->routes = $routes; |
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} |
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/** |
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* Find the route that match the given path from the routes |
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* @param string $path |
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* @return Route |
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*/ |
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public function match($path) |
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{ |
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$path = '/' . ltrim($path, '/'); |
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return $this->doMatch($path); |
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} |
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/** |
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* Find the route that match given request |
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* @param ServerRequestInterface $request |
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* @return Route |
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*/ |
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public function matchRequest(ServerRequestInterface $request) |
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{ |
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return $this->doMatch($request); |
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} |
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/** |
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* Do match |
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* @param string|ServerRequestInterface $pathOrRequest |
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* @return Route |
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*/ |
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protected function doMatch($pathOrRequest) |
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{ |
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$route = $pathOrRequest instanceof ServerRequestInterface |
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? $this->findRouteFromRequest($pathOrRequest) |
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: $this->findRoute($pathOrRequest); |
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$computedParameters = $this->computeRouteParameters($route); |
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$route->setComputedParameters($computedParameters); |
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return $route; |
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} |
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/** |
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* @param ServerRequestInterface $request |
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* @throws MethodNotAllowedException |
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* @throws RouteNotFoundException |
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* @return Route |
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*/ |
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protected function findRouteFromRequest(ServerRequestInterface $request) |
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{ |
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$requiredMethods = []; |
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foreach ($this->routes as $route) { |
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if (static::matchSchema($route, $request) |
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&& static::matchHost($route, $request) |
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&& static::matchPath($request->getUri()->getPath(), $route) |
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) { |
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if (static::matchMethod($route, $request)) { |
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return $route; |
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} else { |
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$requiredMethods = array_merge($requiredMethods, $route->getMethods()); |
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} |
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} |
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} |
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if (!empty($requiredMethods)) { |
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throw new MethodNotAllowedException($requiredMethods); |
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} |
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throw new RouteNotFoundException(); |
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} |
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/** |
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* @param string $path |
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* @throws RouteNotFoundException |
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* @return Route |
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*/ |
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protected function findRoute($path) |
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{ |
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foreach ($this->routes as $route) { |
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if (static::matchPath($path, $route)) { |
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return $route; |
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} |
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} |
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throw new RouteNotFoundException(); |
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} |
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/** |
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* Checks whether the route matches the current request host |
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* @param Route $route |
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* @param ServerRequestInterface $request |
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* @return boolean |
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*/ |
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protected static function matchHost(Route $route, $request) |
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{ |
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if (empty($route->getHost())) { |
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return true; |
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} |
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if (preg_match($route->compile()->getHostRegex(), $request->getUri()->getHost(), $matches)) { |
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$routeParameters = array_filter($matches, function($value, $key){ |
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return !is_int($key) && $value; |
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}, ARRAY_FILTER_USE_BOTH); |
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$route->setParameter('_hostMatches', $routeParameters); |
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return true; |
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} |
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return false; |
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} |
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/** |
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* Checks whether the route matches the current request method |
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* @param Route $route |
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* @param ServerRequestInterface $request |
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* @return boolean |
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*/ |
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protected static function matchMethod(Route $route, $request) |
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{ |
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if (!$route->getMethods()) { |
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return true; |
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} |
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return in_array(strtoupper($request->getMethod()), $route->getMethods()); |
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} |
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/** |
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* Checks whether the route matches the scheme |
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* @param Route $route |
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* @param ServerRequestInterface $request |
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* @return boolean |
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*/ |
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protected static function matchSchema(Route $route, $request) |
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{ |
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if (!$route->getSchemes()) { |
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return true; |
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} |
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return in_array($request->getUri()->getScheme(), $route->getSchemes()); |
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} |
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/** |
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* Checks whether the route matches the given path |
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* @param string $path |
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* @param Route $route |
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* @return boolean |
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*/ |
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protected static function matchPath($path, Route $route) |
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{ |
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if (preg_match($route->compile()->getPathRegex(), rawurldecode($path), $matches)) { |
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$routeParameters = array_filter($matches, function($value, $key){ |
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return !is_int($key) && $value; |
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}, ARRAY_FILTER_USE_BOTH); |
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$route->setParameter('_pathMatches', $routeParameters); |
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return true; |
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} |
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return false; |
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} |
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/** |
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* Computes route parameters |
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* @param Route $route |
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* @return array |
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*/ |
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protected static function computeRouteParameters(Route $route) |
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{ |
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return array_replace($route->getDefaults(), |
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$route->getParameter('_hostMatches') ?: [], |
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$route->getParameter('_pathMatches') ?: [] |
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); |
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} |
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} |
slince /
routing
