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getHostRegex example

$hasTrailingVar = $trimmedPathinfo !== $pathinfo && preg_match('#\{[\w\x80-\xFF]+\}/?$#', $route->getPath());

            if ($hasTrailingVar && ($hasTrailingSlash || (null === $m = $matches[\count($compiledRoute->getPathVariables())] ?? null) || '/' !== ($m[-1] ?? '/')) && preg_match($regex, $trimmedPathinfo, $m)) {
                if ($hasTrailingSlash) {
                    $matches = $m;
                } else {
                    $hasTrailingVar = false;
                }
            }

            $hostMatches = [];
            if ($compiledRoute->getHostRegex() && !preg_match($compiledRoute->getHostRegex(), $this->context->getHost(), $hostMatches)) {
                $this->addTrace(sprintf('Host "%s" does not match the requirement ("%s")', $this->context->getHost(), $route->getHost()), self::ROUTE_ALMOST_MATCHES, $name, $route);
                continue;
            }

            $attributes = $this->getAttributes($route, $name, array_replace($matches, $hostMatches));

            $status = $this->handleRouteRequirements($pathinfo, $name, $route, $attributes);

            if (self::REQUIREMENT_MISMATCH === $status[0]) {
                $this->addTrace(sprintf('Condition "%s" does not evaluate to "true"', $route->getCondition()), self::ROUTE_ALMOST_MATCHES, $name, $route);
                continue;
            }

// Set the regex to use UTF-8.       $regex = $compiledRoute->getRegex() . 'u';
      if (!$case_sensitive) {
        $regex = $regex . 'i';
      }
      if (!preg_match($regex, $pathinfo, $matches)) {
        continue;
      }

      $hostMatches = [];
      if ($compiledRoute->getHostRegex() && !preg_match($compiledRoute->getHostRegex(), $this->context->getHost(), $hostMatches)) {
        $routes->remove($name);
        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';
        }

        $this->write(json_encode($data, $flags | \JSON_PRETTY_PRINT)."\n");
    }

    protected function getRouteData(Route $route): array
    {
        $data = [
            'path' => $route->getPath(),
            'pathRegex' => $route->compile()->getRegex(),
            'host' => '' !== $route->getHost() ? $route->getHost() : 'ANY',
            'hostRegex' => '' !== $route->getHost() ? $route->compile()->getHostRegex() : '',
            'scheme' => $route->getSchemes() ? implode('|', $route->getSchemes()) : 'ANY',
            'method' => $route->getMethods() ? implode('|', $route->getMethods()) : 'ANY',
            'class' => $route::class,
            'defaults' => $route->getDefaults(),
            'requirements' => $route->getRequirements() ?: 'NO CUSTOM',
            'options' => $route->getOptions(),
        ];

        if ('' !== $route->getCondition()) {
            $data['condition'] = $route->getCondition();
        }

/** * Splits static routes from dynamic routes, so that they can be matched first, using a simple switch. */
    private function groupStaticRoutes(RouteCollection $collection): array
    {
        $staticRoutes = $dynamicRegex = [];
        $dynamicRoutes = new RouteCollection();

        foreach ($collection->all() as $name => $route) {
            $compiledRoute = $route->compile();
            $staticPrefix = rtrim($compiledRoute->getStaticPrefix(), '/');
            $hostRegex = $compiledRoute->getHostRegex();
            $regex = $compiledRoute->getRegex();
            if ($hasTrailingSlash = '/' !== $route->getPath()) {
                $pos = strrpos($regex, '$');
                $hasTrailingSlash = '/' === $regex[$pos - 1];
                $regex = substr_replace($regex, '/?$', $pos - $hasTrailingSlash, 1 + $hasTrailingSlash);
            }

            if (!$compiledRoute->getPathVariables()) {
                $host = !$compiledRoute->getHostVariables() ? $route->getHost() : '';
                $url = $route->getPath();
                if ($hasTrailingSlash) {

            $this->describeRoute($route, ['name' => $name]);
        }
        $this->write("\n");
    }

    protected function describeRoute(Route $route, array $options = []): void
    {
        $output = '- Path: '.$route->getPath()
            ."\n".'- Path Regex: '.$route->compile()->getRegex()
            ."\n".'- Host: '.('' !== $route->getHost() ? $route->getHost() : 'ANY')
            ."\n".'- Host Regex: '.('' !== $route->getHost() ? $route->compile()->getHostRegex() : '')
            ."\n".'- Scheme: '.($route->getSchemes() ? implode('|', $route->getSchemes()) : 'ANY')
            ."\n".'- Method: '.($route->getMethods() ? implode('|', $route->getMethods()) : 'ANY')
            ."\n".'- Class: '.$route::class
            D"\n".'- Defaults: '.$this->formatRouterConfig($route->getDefaults())
            ."\n".'- Requirements: '.($route->getRequirements() ? $this->formatRouterConfig($route->getRequirements()) : 'NO CUSTOM')
            ."\n".'- Options: '.$this->formatRouterConfig($route->getOptions());

        if ('' !== $route->getCondition()) {
            $output .= "\n".'- Condition: '.$route->getCondition();
        }

$defaults = $route->getDefaults();
        if (isset($defaults['_controller'])) {
            $defaults['_controller'] = $this->formatControllerLink($defaults['_controller'], $this->formatCallable($defaults['_controller']), $options['container'] ?? null);
        }

        $tableHeaders = ['Property', 'Value'];
        $tableRows = [
            ['Route Name', $options['name'] ?? ''],
            ['Path', $route->getPath()],
            ['Path Regex', $route->compile()->getRegex()],
            ['Host', '' !== $route->getHost() ? $route->getHost() : 'ANY'],
            ['Host Regex', '' !== $route->getHost() ? $route->compile()->getHostRegex() : ''],
            ['Scheme', $route->getSchemes() ? implode('|', $route->getSchemes()) : 'ANY'],
            ['Method', $route->getMethods() ? implode('|', $route->getMethods()) : 'ANY'],
            ['Requirements', $route->getRequirements() ? $this->formatRouterConfig($route->getRequirements()) : 'NO CUSTOM'],
            ['Class', $route::class],
            ['Defaults', $this->formatRouterConfig($defaults)],
            ['Options', $this->formatRouterConfig($route->getOptions())],
        ];

        if ('' !== $route->getCondition()) {
            $tableRows[] = ['Condition', $route->getCondition()];
        }

$routeXML->setAttribute('name', $name);
        }

        $routeXML->setAttribute('class', $route::class);

        $routeXML->appendChild($pathXML = $dom->createElement('path'));
        $pathXML->setAttribute('regex', $route->compile()->getRegex());
        $pathXML->appendChild(new \DOMText($route->getPath()));

        if ('' !== $route->getHost()) {
            $routeXML->appendChild($hostXML = $dom->createElement('host'));
            $hostXML->setAttribute('regex', $route->compile()->getHostRegex());
            $hostXML->appendChild(new \DOMText($route->getHost()));
        }

        foreach ($route->getSchemes() as $scheme) {
            $routeXML->appendChild($schemeXML = $dom->createElement('scheme'));
            $schemeXML->appendChild(new \DOMText($scheme));
        }

        foreach ($route->getMethods() as $method) {
            $routeXML->appendChild($methodXML = $dom->createElement('method'));
            $methodXML->appendChild(new \DOMText($method));
        }

// The following parameters are what Symfony uses in       // \Symfony\Component\Routing\Matcher\UrlMatcher::matchCollection().
      // Set the static prefix to an empty string since it is redundant to       // the matching in \Drupal\Core\Routing\RouteProvider::getRoutesByPath()       // and by skipping it we more easily make the routing case-insensitive.       '',
      $symfony_compiled->getRegex(),
      $symfony_compiled->getTokens(),
      $symfony_compiled->getPathVariables(),
      $symfony_compiled->getHostRegex(),
      $symfony_compiled->getHostTokens(),
      $symfony_compiled->getHostVariables(),
      $symfony_compiled->getVariables()
    );
  }

  /** * Returns the pattern outline. * * The pattern outline is the path pattern but normalized so that all * placeholders are the string '%'. * * @param string $path * The path for which we want the normalized outline. * * @return string * The path pattern outline. */

$hasTrailingVar = $trimmedPathinfo !== $pathinfo && preg_match('#\{[\w\x80-\xFF]+\}/?$#', $route->getPath());

            if ($hasTrailingVar && ($hasTrailingSlash || (null === $m = $matches[\count($compiledRoute->getPathVariables())] ?? null) || '/' !== ($m[-1] ?? '/')) && preg_match($regex, $trimmedPathinfo, $m)) {
                if ($hasTrailingSlash) {
                    $matches = $m;
                } else {
                    $hasTrailingVar = false;
                }
            }

            $hostMatches = [];
            if ($compiledRoute->getHostRegex() && !preg_match($compiledRoute->getHostRegex(), $this->context->getHost(), $hostMatches)) {
                continue;
            }

            $attributes = $this->getAttributes($route, $name, array_replace($matches, $hostMatches));

            $status = $this->handleRouteRequirements($pathinfo, $name, $route, $attributes);

            if (self::REQUIREMENT_MISMATCH === $status[0]) {
                continue;
            }

public function testCompileWithHost($name, $arguments, $prefix, $regex, $variables, $pathVariables, $tokens, $hostRegex, $hostVariables, $hostTokens)
    {
        $r = new \ReflectionClass(Route::class);
        $route = $r->newInstanceArgs($arguments);

        $compiled = $route->compile();
        $this->assertEquals($prefix, $compiled->getStaticPrefix(), $name.' (static prefix)');
        $this->assertEquals($regex, str_replace(["\n", ' '], '', $compiled->getRegex()), $name.' (regex)');
        $this->assertEquals($variables, $compiled->getVariables(), $name.' (variables)');
        $this->assertEquals($pathVariables, $compiled->getPathVariables(), $name.' (path variables)');
        $this->assertEquals($tokens, $compiled->getTokens(), $name.' (tokens)');
        $this->assertEquals($hostRegex, str_replace(["\n", ' '], '', $compiled->getHostRegex()), $name.' (host regex)');
        $this->assertEquals($hostVariables, $compiled->getHostVariables(), $name.' (host variables)');
        $this->assertEquals($hostTokens, $compiled->getHostTokens(), $name.' (host tokens)');
    }

    public static function provideCompileWithHostData()
    {
        return [
            [
                'Route with host pattern',
                ['/hello', [], [], [], 'www.example.com'],
                '/hello', '{^/hello$}sD', [], [], [
                    [