Change filter on /rails/info/routes to use an actual path regexp from rails

Change filter on /rails/info/routes to use an actual path regexp from rails
and not approximate javascript version. Oniguruma supports much more
extensive list of features than javascript regexp engine.

Fixes #18402.

1 files changed, 23 insertions, 2 deletions

diff --git a/railties/lib/rails/info_controller.rb b/railties/lib/rails/info_controller.rb
index 49e5431a16..6e61cc3cb5 100644
--- a/railties/lib/rails/info_controller.rb
+++ b/railties/lib/rails/info_controller.rb
@@ -17,7 +17,28 @@ class Rails::InfoController < Rails::ApplicationController # :nodoc:
   end
 
   def routes
-    @routes_inspector = ActionDispatch::Routing::RoutesInspector.new(_routes.routes)
-    @page_title = 'Routes'
+    if path = params[:path]
+      path = URI.escape path
+      normalized_path = with_leading_slash path
+      render json: {
+        exact: match_route {|it| it.match normalized_path },
+        fuzzy: match_route {|it| it.spec.to_s.match path }
+      }
+    else
+      @routes_inspector = ActionDispatch::Routing::RoutesInspector.new(_routes.routes)
+      @page_title = 'Routes'
+    end
+  end
+
+  private
+
+  def match_route
+    _routes.routes.select {|route|
+      yield route.path
+    }.map {|route| route.path.spec.to_s }
+  end
+
+  def with_leading_slash(path)
+    ('/' + path).squeeze('/')
   end
 end