diff core/lib/Drupal/Core/Path/PathMatcher.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/Path/PathMatcher.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,120 @@
+<?php
+
+namespace Drupal\Core\Path;
+
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\Core\Url;
+
+/**
+ * Provides a path matcher.
+ */
+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;
+  }
+
+}