142 lines
4.0 KiB
PHP
142 lines
4.0 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Routing\Matcher;
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use Symfony\Component\Routing\Exception\MethodNotAllowedException;
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use Symfony\Component\Routing\Exception\ResourceNotFoundException;
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use Symfony\Component\Routing\Route;
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use Symfony\Component\Routing\RouteCollection;
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use Symfony\Component\Routing\RequestContext;
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/**
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* UrlMatcher matches URL based on a set of routes.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class UrlMatcher implements UrlMatcherInterface
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{
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protected $context;
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private $routes;
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/**
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* Constructor.
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*
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* @param RouteCollection $routes A RouteCollection instance
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* @param RequestContext $context The context
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*/
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public function __construct(RouteCollection $routes, RequestContext $context)
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{
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$this->routes = $routes;
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$this->context = $context;
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}
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/**
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* Sets the request context.
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*
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* @param RequestContext $context The context
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*/
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public function setContext(RequestContext $context)
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{
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$this->context = $context;
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}
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/**
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* Gets the request context.
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*
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* @return RequestContext The context
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*/
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public function getContext()
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{
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return $this->context;
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}
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/**
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* Tries to match a URL with a set of routes.
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*
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* @param string $pathinfo The path info to be parsed
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*
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* @return array An array of parameters
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*
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* @throws ResourceNotFoundException If the resource could not be found
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* @throws MethodNotAllowedException If the resource was found but the request method is not allowed
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*/
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public function match($pathinfo)
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{
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$this->allow = array();
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if ($ret = $this->matchCollection($pathinfo, $this->routes)) {
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return $ret;
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}
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throw 0 < count($this->allow)
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? new MethodNotAllowedException(array_unique(array_map('strtoupper', $this->allow)))
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: new ResourceNotFoundException();
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}
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protected function matchCollection($pathinfo, RouteCollection $routes)
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{
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foreach ($routes as $name => $route) {
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if ($route instanceof RouteCollection) {
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if (false === strpos($route->getPrefix(), '{') && $route->getPrefix() !== substr($pathinfo, 0, strlen($route->getPrefix()))) {
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continue;
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}
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if (!$ret = $this->matchCollection($pathinfo, $route)) {
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continue;
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}
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return $ret;
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}
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$compiledRoute = $route->compile();
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// check the static prefix of the URL first. Only use the more expensive preg_match when it matches
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if ('' !== $compiledRoute->getStaticPrefix() && 0 !== strpos($pathinfo, $compiledRoute->getStaticPrefix())) {
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continue;
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}
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if (!preg_match($compiledRoute->getRegex(), $pathinfo, $matches)) {
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continue;
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}
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// check HTTP method requirement
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if ($req = $route->getRequirement('_method')) {
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// HEAD and GET are equivalent as per RFC
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if ('HEAD' === $method = $this->context->getMethod()) {
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$method = 'GET';
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}
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if (!in_array($method, $req = explode('|', strtoupper($req)))) {
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$this->allow = array_merge($this->allow, $req);
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continue;
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}
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}
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return array_merge($this->mergeDefaults($matches, $route->getDefaults()), array('_route' => $name));
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}
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}
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protected function mergeDefaults($params, $defaults)
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{
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$parameters = $defaults;
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foreach ($params as $key => $value) {
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if (!is_int($key)) {
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$parameters[$key] = rawurldecode($value);
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}
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}
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return $parameters;
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}
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}
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