git-svn-id: https://msi/svn/firstRepo/Service/branches/Slim3@39 0f545695-f87b-41b6-9a03-7f16563b5454
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<?php
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/**
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* Slim Framework (http://slimframework.com)
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*
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* @link https://github.com/slimphp/Slim
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* @copyright Copyright (c) 2011-2015 Josh Lockhart
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* @license https://github.com/slimphp/Slim/blob/3.x/LICENSE.md (MIT License)
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*/
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namespace Slim;
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use FastRoute\Dispatcher;
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use InvalidArgumentException;
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use RuntimeException;
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use Psr\Http\Message\ServerRequestInterface;
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use FastRoute\RouteCollector;
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use FastRoute\RouteParser;
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use FastRoute\RouteParser\Std as StdParser;
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use FastRoute\DataGenerator;
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use Slim\Interfaces\RouteGroupInterface;
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use Slim\Interfaces\RouterInterface;
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use Slim\Interfaces\RouteInterface;
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/**
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* Router
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*
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* This class organizes Slim application route objects. It is responsible
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* for registering route objects, assigning names to route objects,
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* finding routes that match the current HTTP request, and creating
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* URLs for a named route.
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*/
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class Router implements RouterInterface
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{
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/**
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* Parser
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*
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* @var \FastRoute\RouteParser
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*/
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protected $routeParser;
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/**
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* Base path used in pathFor()
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*
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* @var string
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*/
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protected $basePath = '';
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/**
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* Routes
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*
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* @var Route[]
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*/
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protected $routes = [];
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/**
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* Route counter incrementer
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* @var int
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*/
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protected $routeCounter = 0;
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/**
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* Named routes
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*
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* @var null|Route[]
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*/
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protected $namedRoutes;
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/**
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* Route groups
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*
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* @var RouteGroup[]
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*/
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protected $routeGroups = [];
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/**
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* @var \FastRoute\Dispatcher
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*/
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protected $dispatcher;
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/**
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* Create new router
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*
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* @param RouteParser $parser
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*/
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public function __construct(RouteParser $parser = null)
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{
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$this->routeParser = $parser ?: new StdParser;
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}
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/**
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* Set the base path used in pathFor()
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*
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* @param string $basePath
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*
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* @return self
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*/
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public function setBasePath($basePath)
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{
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if (!is_string($basePath)) {
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throw new InvalidArgumentException('Router basePath must be a string');
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}
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$this->basePath = $basePath;
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return $this;
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}
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/**
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* Add route
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*
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* @param string[] $methods Array of HTTP methods
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* @param string $pattern The route pattern
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* @param callable $handler The route callable
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*
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* @return RouteInterface
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*
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* @throws InvalidArgumentException if the route pattern isn't a string
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*/
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public function map($methods, $pattern, $handler)
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{
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if (!is_string($pattern)) {
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throw new InvalidArgumentException('Route pattern must be a string');
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}
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// Prepend parent group pattern(s)
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if ($this->routeGroups) {
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$pattern = $this->processGroups() . $pattern;
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}
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// According to RFC methods are defined in uppercase (See RFC 7231)
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$methods = array_map("strtoupper", $methods);
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// Add route
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$route = new Route($methods, $pattern, $handler, $this->routeGroups, $this->routeCounter);
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$this->routes[$route->getIdentifier()] = $route;
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$this->routeCounter++;
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return $route;
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}
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/**
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* Dispatch router for HTTP request
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*
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* @param ServerRequestInterface $request The current HTTP request object
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*
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* @return array
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*
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* @link https://github.com/nikic/FastRoute/blob/master/src/Dispatcher.php
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*/
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public function dispatch(ServerRequestInterface $request)
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{
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$uri = '/' . ltrim($request->getUri()->getPath(), '/');
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return $this->createDispatcher()->dispatch(
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$request->getMethod(),
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$uri
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);
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}
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/**
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* @return \FastRoute\Dispatcher
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*/
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protected function createDispatcher()
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{
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return $this->dispatcher ?: \FastRoute\simpleDispatcher(function (RouteCollector $r) {
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foreach ($this->getRoutes() as $route) {
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$r->addRoute($route->getMethods(), $route->getPattern(), $route->getIdentifier());
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}
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}, [
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'routeParser' => $this->routeParser
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]);
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}
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/**
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* @param \FastRoute\Dispatcher $dispatcher
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*/
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public function setDispatcher(Dispatcher $dispatcher)
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{
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$this->dispatcher = $dispatcher;
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}
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/**
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* Get route objects
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*
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* @return Route[]
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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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* Get named route object
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*
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* @param string $name Route name
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*
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* @return Route
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*
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* @throws RuntimeException If named route does not exist
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*/
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public function getNamedRoute($name)
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{
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if (is_null($this->namedRoutes)) {
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$this->buildNameIndex();
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}
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if (!isset($this->namedRoutes[$name])) {
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throw new RuntimeException('Named route does not exist for name: ' . $name);
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}
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return $this->namedRoutes[$name];
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}
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/**
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* Process route groups
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*
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* @return string A group pattern to prefix routes with
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*/
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protected function processGroups()
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{
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$pattern = "";
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foreach ($this->routeGroups as $group) {
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$pattern .= $group->getPattern();
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}
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return $pattern;
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}
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/**
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* Add a route group to the array
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*
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* @param string $pattern
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* @param callable $callable
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*
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* @return RouteGroupInterface
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*/
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public function pushGroup($pattern, $callable)
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{
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$group = new RouteGroup($pattern, $callable);
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array_push($this->routeGroups, $group);
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return $group;
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}
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/**
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* Removes the last route group from the array
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*
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* @return RouteGroup|bool The RouteGroup if successful, else False
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*/
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public function popGroup()
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{
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$group = array_pop($this->routeGroups);
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return $group instanceof RouteGroup ? $group : false;
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}
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/**
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* @param $identifier
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* @return \Slim\Interfaces\RouteInterface
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*/
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public function lookupRoute($identifier)
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{
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if (!isset($this->routes[$identifier])) {
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throw new RuntimeException('Route not found, looks like your route cache is stale.');
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}
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return $this->routes[$identifier];
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}
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/**
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* Build the path for a named route excluding the base path
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*
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* @param string $name Route name
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* @param array $data Named argument replacement data
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* @param array $queryParams Optional query string parameters
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*
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* @return string
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*
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* @throws RuntimeException If named route does not exist
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* @throws InvalidArgumentException If required data not provided
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*/
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public function relativePathFor($name, array $data = [], array $queryParams = [])
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{
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$route = $this->getNamedRoute($name);
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$pattern = $route->getPattern();
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$routeDatas = $this->routeParser->parse($pattern);
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// $routeDatas is an array of all possible routes that can be made. There is
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// one routedata for each optional parameter plus one for no optional parameters.
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//
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// The most specific is last, so we look for that first.
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$routeDatas = array_reverse($routeDatas);
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$segments = [];
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foreach ($routeDatas as $routeData) {
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foreach ($routeData as $item) {
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if (is_string($item)) {
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// this segment is a static string
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$segments[] = $item;
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continue;
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}
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// This segment has a parameter: first element is the name
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if (!array_key_exists($item[0], $data)) {
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// we don't have a data element for this segment: cancel
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// testing this routeData item, so that we can try a less
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// specific routeData item.
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$segments = [];
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$segmentName = $item[0];
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break;
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}
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$segments[] = $data[$item[0]];
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}
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if (!empty($segments)) {
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// we found all the parameters for this route data, no need to check
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// less specific ones
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break;
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}
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}
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if (empty($segments)) {
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throw new InvalidArgumentException('Missing data for URL segment: ' . $segmentName);
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}
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$url = implode('', $segments);
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if ($queryParams) {
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$url .= '?' . http_build_query($queryParams);
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}
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return $url;
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}
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/**
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* Build the path for a named route including the base path
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*
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* @param string $name Route name
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* @param array $data Named argument replacement data
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* @param array $queryParams Optional query string parameters
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*
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* @return string
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*
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* @throws RuntimeException If named route does not exist
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* @throws InvalidArgumentException If required data not provided
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*/
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public function pathFor($name, array $data = [], array $queryParams = [])
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{
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$url = $this->relativePathFor($name, $data, $queryParams);
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if ($this->basePath) {
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$url = $this->basePath . $url;
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}
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return $url;
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}
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/**
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* Build the path for a named route.
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*
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* This method is deprecated. Use pathFor() from now on.
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*
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* @param string $name Route name
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* @param array $data Named argument replacement data
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* @param array $queryParams Optional query string parameters
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*
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* @return string
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*
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* @throws RuntimeException If named route does not exist
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* @throws InvalidArgumentException If required data not provided
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*/
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public function urlFor($name, array $data = [], array $queryParams = [])
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{
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trigger_error('urlFor() is deprecated. Use pathFor() instead.', E_USER_DEPRECATED);
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return $this->pathFor($name, $data, $queryParams);
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}
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/**
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* Build index of named routes
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*/
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protected function buildNameIndex()
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{
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$this->namedRoutes = [];
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foreach ($this->routes as $route) {
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$name = $route->getName();
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if ($name) {
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$this->namedRoutes[$name] = $route;
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}
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}
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}
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}
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