--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Routing\Matcher;
+
+use Symfony\Component\Routing\Exception\MethodNotAllowedException;
+use Symfony\Component\Routing\Exception\ResourceNotFoundException;
+use Symfony\Component\Routing\RouteCollection;
+use Symfony\Component\Routing\RequestContext;
+use Symfony\Component\Routing\Route;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
+use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface;
+
+/**
+ * UrlMatcher matches URL based on a set of routes.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class UrlMatcher implements UrlMatcherInterface, RequestMatcherInterface
+{
+ const REQUIREMENT_MATCH = 0;
+ const REQUIREMENT_MISMATCH = 1;
+ const ROUTE_MATCH = 2;
+
+ /**
+ * @var RequestContext
+ */
+ protected $context;
+
+ /**
+ * @var array
+ */
+ protected $allow = array();
+
+ /**
+ * @var RouteCollection
+ */
+ protected $routes;
+
+ protected $request;
+ protected $expressionLanguage;
+
+ /**
+ * @var ExpressionFunctionProviderInterface[]
+ */
+ protected $expressionLanguageProviders = array();
+
+ /**
+ * Constructor.
+ *
+ * @param RouteCollection $routes A RouteCollection instance
+ * @param RequestContext $context The context
+ */
+ public function __construct(RouteCollection $routes, RequestContext $context)
+ {
+ $this->routes = $routes;
+ $this->context = $context;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setContext(RequestContext $context)
+ {
+ $this->context = $context;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getContext()
+ {
+ return $this->context;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function match($pathinfo)
+ {
+ $this->allow = array();
+
+ if ($ret = $this->matchCollection(rawurldecode($pathinfo), $this->routes)) {
+ return $ret;
+ }
+
+ throw 0 < count($this->allow)
+ ? new MethodNotAllowedException(array_unique($this->allow))
+ : new ResourceNotFoundException(sprintf('No routes found for "%s".', $pathinfo));
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function matchRequest(Request $request)
+ {
+ $this->request = $request;
+
+ $ret = $this->match($request->getPathInfo());
+
+ $this->request = null;
+
+ return $ret;
+ }
+
+ public function addExpressionLanguageProvider(ExpressionFunctionProviderInterface $provider)
+ {
+ $this->expressionLanguageProviders[] = $provider;
+ }
+
+ /**
+ * Tries to match a URL with a set of routes.
+ *
+ * @param string $pathinfo The path info to be parsed
+ * @param RouteCollection $routes The set of routes
+ *
+ * @return array An array of parameters
+ *
+ * @throws ResourceNotFoundException If the resource could not be found
+ * @throws MethodNotAllowedException If the resource was found but the request method is not allowed
+ */
+ protected function matchCollection($pathinfo, RouteCollection $routes)
+ {
+ foreach ($routes as $name => $route) {
+ $compiledRoute = $route->compile();
+
+ // check the static prefix of the URL first. Only use the more expensive preg_match when it matches
+ if ('' !== $compiledRoute->getStaticPrefix() && 0 !== strpos($pathinfo, $compiledRoute->getStaticPrefix())) {
+ continue;
+ }
+
+ if (!preg_match($compiledRoute->getRegex(), $pathinfo, $matches)) {
+ continue;
+ }
+
+ $hostMatches = array();
+ if ($compiledRoute->getHostRegex() && !preg_match($compiledRoute->getHostRegex(), $this->context->getHost(), $hostMatches)) {
+ continue;
+ }
+
+ // check HTTP method requirement
+ if ($requiredMethods = $route->getMethods()) {
+ // HEAD and GET are equivalent as per RFC
+ if ('HEAD' === $method = $this->context->getMethod()) {
+ $method = 'GET';
+ }
+
+ if (!in_array($method, $requiredMethods)) {
+ $this->allow = array_merge($this->allow, $requiredMethods);
+
+ continue;
+ }
+ }
+
+ $status = $this->handleRouteRequirements($pathinfo, $name, $route);
+
+ if (self::ROUTE_MATCH === $status[0]) {
+ return $status[1];
+ }
+
+ if (self::REQUIREMENT_MISMATCH === $status[0]) {
+ continue;
+ }
+
+ return $this->getAttributes($route, $name, array_replace($matches, $hostMatches));
+ }
+ }
+
+ /**
+ * Returns an array of values to use as request attributes.
+ *
+ * As this method requires the Route object, it is not available
+ * in matchers that do not have access to the matched Route instance
+ * (like the PHP and Apache matcher dumpers).
+ *
+ * @param Route $route The route we are matching against
+ * @param string $name The name of the route
+ * @param array $attributes An array of attributes from the matcher
+ *
+ * @return array An array of parameters
+ */
+ protected function getAttributes(Route $route, $name, array $attributes)
+ {
+ $attributes['_route'] = $name;
+
+ return $this->mergeDefaults($attributes, $route->getDefaults());
+ }
+
+ /**
+ * Handles specific route requirements.
+ *
+ * @param string $pathinfo The path
+ * @param string $name The route name
+ * @param Route $route The route
+ *
+ * @return array The first element represents the status, the second contains additional information
+ */
+ protected function handleRouteRequirements($pathinfo, $name, Route $route)
+ {
+ // expression condition
+ if ($route->getCondition() && !$this->getExpressionLanguage()->evaluate($route->getCondition(), array('context' => $this->context, 'request' => $this->request))) {
+ return array(self::REQUIREMENT_MISMATCH, null);
+ }
+
+ // check HTTP scheme requirement
+ $scheme = $this->context->getScheme();
+ $status = $route->getSchemes() && !$route->hasScheme($scheme) ? self::REQUIREMENT_MISMATCH : self::REQUIREMENT_MATCH;
+
+ return array($status, null);
+ }
+
+ /**
+ * Get merged default parameters.
+ *
+ * @param array $params The parameters
+ * @param array $defaults The defaults
+ *
+ * @return array Merged default parameters
+ */
+ protected function mergeDefaults($params, $defaults)
+ {
+ foreach ($params as $key => $value) {
+ if (!is_int($key)) {
+ $defaults[$key] = $value;
+ }
+ }
+
+ return $defaults;
+ }
+
+ protected function getExpressionLanguage()
+ {
+ if (null === $this->expressionLanguage) {
+ if (!class_exists('Symfony\Component\ExpressionLanguage\ExpressionLanguage')) {
+ throw new \RuntimeException('Unable to use expressions as the Symfony ExpressionLanguage component is not installed.');
+ }
+ $this->expressionLanguage = new ExpressionLanguage(null, $this->expressionLanguageProviders);
+ }
+
+ return $this->expressionLanguage;
+ }
+}
projects / yaffs-website / blobdiff