Ticket #39473: 39473-2023-1.patch

src/wp-includes/rest-api/class-wp-rest-server.php

@@ -71 +71 @@
          */
         protected $endpoints = array();
 
+        /**
+         * This variable stores namespaces as keys and route maps as values.
+         * The route map is an associative array with path regexes as the keys. The
+         * value is an indexed array with the callback function/method as the first
+         * item, and a bitmask of HTTP methods as the second item (see the class
+         * constants).
+         *
+         * $endpoints is the raw endpoints.
+         * $route_map is the parsed, filtered and sanitized map from a regex to an endpoint.
+         *
+         * @access protected
+         * @var array Map of namespaces to route maps.
+         */
+        protected $route_map_for_namespace = array();
+
         /**
          * Options defined for the routes.
          *
@@ -839 +854 @@
                 }
         }
 
+        /**
+         * Retrieves the internally stored route map.
+         *
+         * @access public
+         *
+         * @param string $route_namespace The namespace to store the routes for.
+         * @return array Route map of the routes.
+         */
+        public function get_route_map( $route_namespace = '' ) {
+                if ( isset( $this->route_map_for_namespace[ $route_namespace ] ) ) {
+                        return $this->route_map_for_namespace[ $route_namespace ];
+                }
+                return array();
+        }
+
+        /**
+         * Sets the internally stored route map.
+         *
+         * @access protected
+         *
+         * @param string $route_namespace Store the route map for a specific
+         * namespace, or empty string for the default namespace containing all
+         * routes.
+         * @param array $route_map Route map of the routes.
+         */
+        protected function set_route_map( $route_namespace, $route_map ) {
+                $this->route_map_for_namespace[ $route_namespace ] = $route_map;
+        }
+
+        /**
+         * Clears the internally stored route map.
+         *
+         * @access protected
+         *
+         * @param string $route_namespace Store the route map for a specific
+         * namespace, or empty string for the default namespace containing all
+         * routes.
+         */
+        public function clear_route_map( $route_namespace ) {
+                $this->route_map_for_namespace[ $route_namespace ] = array();
+        }
+
         /**
          * Retrieves the route map.
          *
@@ -862 +919 @@
          *               `'/path/regex' => array( array( $callback, $bitmask ), ...)`.
          */
         public function get_routes( $route_namespace = '' ) {
+                $cached_routes = $this->get_route_map( $route_namespace );
+                if ( ! empty( $cached_routes ) ) {
+                        return $cached_routes;
+                }
+
                 $endpoints = $this->endpoints;
 
                 if ( $route_namespace ) {
@@ -929 +991 @@
                         }
                 }
 
+                $this->set_route_map( $route_namespace, $endpoints );
                 return $endpoints;
         }