class PathMatcher

Same name in other branches
  1. 9 core/lib/Drupal/Core/Path/PathMatcher.php \Drupal\Core\Path\PathMatcher
  2. 8.9.x core/lib/Drupal/Core/Path/PathMatcher.php \Drupal\Core\Path\PathMatcher
  3. 11.x core/lib/Drupal/Core/Path/PathMatcher.php \Drupal\Core\Path\PathMatcher

Provides a path matcher.

Hierarchy

  • class \Drupal\Core\Path\PathMatcher implements \Drupal\Core\Path\PathMatcherInterface

Expanded class hierarchy of PathMatcher

1 file declares its use of PathMatcher
PathMatcherTest.php in core/tests/Drupal/Tests/Core/Path/PathMatcherTest.php
1 string reference to 'PathMatcher'
core.services.yml in core/core.services.yml
core/core.services.yml
1 service uses PathMatcher
path.matcher in core/core.services.yml
Drupal\Core\Path\PathMatcher

File

core/lib/Drupal/Core/Path/PathMatcher.php, line 12

Namespace

Drupal\Core\Path
View source
class PathMatcher implements PathMatcherInterface {
    
    /**
     * Whether the current page is the front page.
     *
     * @var bool
     */
    protected $isCurrentFrontPage;
    
    /**
     * The default front page.
     *
     * @var string
     */
    protected $frontPage;
    
    /**
     * The cache of regular expressions.
     *
     * @var array
     */
    protected $regexes;
    
    /**
     * The config factory service.
     *
     * @var \Drupal\Core\Config\ConfigFactoryInterface
     */
    protected $configFactory;
    
    /**
     * The current route match.
     *
     * @var \Drupal\Core\Routing\RouteMatchInterface
     */
    protected $routeMatch;
    
    /**
     * Creates a new PathMatcher.
     *
     * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
     *   The config factory.
     * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
     *   The current route match.
     */
    public function __construct(ConfigFactoryInterface $config_factory, RouteMatchInterface $route_match) {
        $this->configFactory = $config_factory;
        $this->routeMatch = $route_match;
    }
    
    /**
     * {@inheritdoc}
     */
    public function matchPath($path, $patterns) {
        if (!isset($this->regexes[$patterns])) {
            // Convert path settings to a regular expression.
            $to_replace = [
                // Replace newlines with a logical 'or'.
'/(\\r\\n?|\\n)/',
                // Quote asterisks.
'/\\\\\\*/',
                // Quote <front> keyword.
'/(^|\\|)\\\\<front\\\\>($|\\|)/',
            ];
            $replacements = [
                '|',
                '.*',
                '\\1' . preg_quote($this->getFrontPagePath(), '/') . '\\2',
            ];
            $patterns_quoted = preg_quote($patterns, '/');
            $this->regexes[$patterns] = '/^(' . preg_replace($to_replace, $replacements, $patterns_quoted) . ')$/';
        }
        return (bool) preg_match($this->regexes[$patterns], $path);
    }
    
    /**
     * {@inheritdoc}
     */
    public function isFrontPage() {
        // Cache the result as this is called often.
        if (!isset($this->isCurrentFrontPage)) {
            $this->isCurrentFrontPage = FALSE;
            // Ensure that the code can also be executed when there is no active
            // route match, like on exception responses.
            if ($this->routeMatch
                ->getRouteName()) {
                $url = Url::fromRouteMatch($this->routeMatch);
                $this->isCurrentFrontPage = $url->getRouteName() && '/' . $url->getInternalPath() === $this->getFrontPagePath();
            }
        }
        return $this->isCurrentFrontPage;
    }
    
    /**
     * Gets the current front page path.
     *
     * @return string
     *   The front page path.
     */
    protected function getFrontPagePath() {
        // Lazy-load front page config.
        if (!isset($this->frontPage)) {
            $this->frontPage = $this->configFactory
                ->get('system.site')
                ->get('page.front');
        }
        return $this->frontPage;
    }

}

Members

Title Sort descending Modifiers Object type Summary
PathMatcher::$configFactory protected property The config factory service.
PathMatcher::$frontPage protected property The default front page.
PathMatcher::$isCurrentFrontPage protected property Whether the current page is the front page.
PathMatcher::$regexes protected property The cache of regular expressions.
PathMatcher::$routeMatch protected property The current route match.
PathMatcher::getFrontPagePath protected function Gets the current front page path.
PathMatcher::isFrontPage public function
PathMatcher::matchPath public function
PathMatcher::__construct public function Creates a new PathMatcher.

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.