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vendor/symfony/routing/Matcher/TraceableUrlMatcher.php
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172
vendor/symfony/routing/Matcher/TraceableUrlMatcher.php
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<?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\HttpFoundation\Request;
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use Symfony\Component\Routing\Exception\ExceptionInterface;
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use Symfony\Component\Routing\Route;
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use Symfony\Component\Routing\RouteCollection;
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/**
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* TraceableUrlMatcher helps debug path info matching by tracing the match.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class TraceableUrlMatcher extends UrlMatcher
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{
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public const ROUTE_DOES_NOT_MATCH = 0;
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public const ROUTE_ALMOST_MATCHES = 1;
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public const ROUTE_MATCHES = 2;
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protected $traces;
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/**
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* @return array
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*/
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public function getTraces(string $pathinfo)
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{
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$this->traces = [];
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try {
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$this->match($pathinfo);
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} catch (ExceptionInterface) {
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}
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return $this->traces;
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}
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/**
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* @return array
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*/
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public function getTracesForRequest(Request $request)
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{
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$this->request = $request;
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$traces = $this->getTraces($request->getPathInfo());
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$this->request = null;
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return $traces;
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}
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protected function matchCollection(string $pathinfo, RouteCollection $routes): array
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{
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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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$supportsTrailingSlash = 'GET' === $method && $this instanceof RedirectableUrlMatcherInterface;
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$trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
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foreach ($routes as $name => $route) {
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$compiledRoute = $route->compile();
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$staticPrefix = rtrim($compiledRoute->getStaticPrefix(), '/');
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$requiredMethods = $route->getMethods();
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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 ('' !== $staticPrefix && !str_starts_with($trimmedPathinfo, $staticPrefix)) {
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$this->addTrace(sprintf('Path "%s" does not match', $route->getPath()), self::ROUTE_DOES_NOT_MATCH, $name, $route);
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continue;
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}
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$regex = $compiledRoute->getRegex();
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$pos = strrpos($regex, '$');
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$hasTrailingSlash = '/' === $regex[$pos - 1];
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$regex = substr_replace($regex, '/?$', $pos - $hasTrailingSlash, 1 + $hasTrailingSlash);
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if (!preg_match($regex, $pathinfo, $matches)) {
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// does it match without any requirements?
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$r = new Route($route->getPath(), $route->getDefaults(), [], $route->getOptions());
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$cr = $r->compile();
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if (!preg_match($cr->getRegex(), $pathinfo)) {
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$this->addTrace(sprintf('Path "%s" does not match', $route->getPath()), self::ROUTE_DOES_NOT_MATCH, $name, $route);
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continue;
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}
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foreach ($route->getRequirements() as $n => $regex) {
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$r = new Route($route->getPath(), $route->getDefaults(), [$n => $regex], $route->getOptions());
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$cr = $r->compile();
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if (\in_array($n, $cr->getVariables()) && !preg_match($cr->getRegex(), $pathinfo)) {
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$this->addTrace(sprintf('Requirement for "%s" does not match (%s)', $n, $regex), self::ROUTE_ALMOST_MATCHES, $name, $route);
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continue 2;
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}
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}
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continue;
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}
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$hasTrailingVar = $trimmedPathinfo !== $pathinfo && preg_match('#\{[\w\x80-\xFF]+\}/?$#', $route->getPath());
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if ($hasTrailingVar && ($hasTrailingSlash || (null === $m = $matches[\count($compiledRoute->getPathVariables())] ?? null) || '/' !== ($m[-1] ?? '/')) && preg_match($regex, $trimmedPathinfo, $m)) {
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if ($hasTrailingSlash) {
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$matches = $m;
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} else {
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$hasTrailingVar = false;
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}
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}
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$hostMatches = [];
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if ($compiledRoute->getHostRegex() && !preg_match($compiledRoute->getHostRegex(), $this->context->getHost(), $hostMatches)) {
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$this->addTrace(sprintf('Host "%s" does not match the requirement ("%s")', $this->context->getHost(), $route->getHost()), self::ROUTE_ALMOST_MATCHES, $name, $route);
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continue;
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}
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$attributes = $this->getAttributes($route, $name, array_replace($matches, $hostMatches));
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$status = $this->handleRouteRequirements($pathinfo, $name, $route, $attributes);
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if (self::REQUIREMENT_MISMATCH === $status[0]) {
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$this->addTrace(sprintf('Condition "%s" does not evaluate to "true"', $route->getCondition()), self::ROUTE_ALMOST_MATCHES, $name, $route);
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continue;
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}
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if ('/' !== $pathinfo && !$hasTrailingVar && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
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if ($supportsTrailingSlash && (!$requiredMethods || \in_array('GET', $requiredMethods))) {
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$this->addTrace('Route matches!', self::ROUTE_MATCHES, $name, $route);
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return $this->allow = $this->allowSchemes = [];
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}
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$this->addTrace(sprintf('Path "%s" does not match', $route->getPath()), self::ROUTE_DOES_NOT_MATCH, $name, $route);
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continue;
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}
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if ($route->getSchemes() && !$route->hasScheme($this->context->getScheme())) {
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$this->allowSchemes = array_merge($this->allowSchemes, $route->getSchemes());
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$this->addTrace(sprintf('Scheme "%s" does not match any of the required schemes (%s)', $this->context->getScheme(), implode(', ', $route->getSchemes())), self::ROUTE_ALMOST_MATCHES, $name, $route);
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continue;
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}
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if ($requiredMethods && !\in_array($method, $requiredMethods)) {
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$this->allow = array_merge($this->allow, $requiredMethods);
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$this->addTrace(sprintf('Method "%s" does not match any of the required methods (%s)', $this->context->getMethod(), implode(', ', $requiredMethods)), self::ROUTE_ALMOST_MATCHES, $name, $route);
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continue;
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}
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$this->addTrace('Route matches!', self::ROUTE_MATCHES, $name, $route);
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return array_replace($attributes, $status[1] ?? []);
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}
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return [];
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}
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private function addTrace(string $log, int $level = self::ROUTE_DOES_NOT_MATCH, ?string $name = null, ?Route $route = null): void
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{
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$this->traces[] = [
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'log' => $log,
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'name' => $name,
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'level' => $level,
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'path' => $route?->getPath(),
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];
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}
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}
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