move_file as a replacement for import_asset

middleman-core/features/move_files.feature

@@ -0,0 +1,44 @@
+Feature: Move files
+
+  Scenario: Move one path to another
+    Given a fixture app "large-build-app"
+    And a file named "config.rb" with:
+    """
+    move_file "/static.html", "/static2.html"
+    """
+    And the Server is running at "large-build-app"
+    When I go to "/static.html"
+    Then I should see 'Not Found'
+    When I go to "/static2.html"
+    Then I should see 'Static, no code!'
+
+  Scenario: Move one path to another with directory indexes
+    Given a fixture app "large-build-app"
+    And a file named "config.rb" with:
+    """
+    activate :directory_indexes
+    move_file "/static.html", "/static2.html"
+    """
+    And the Server is running at "large-build-app"
+    When I go to "/static.html"
+    Then I should see 'Not Found'
+    When I go to "/static/index.html"
+    Then I should see 'Not Found'
+    When I go to "/static2.html"
+    Then I should see 'Static, no code!'
+
+  Scenario: Move one path to another with directory indexes (using dest path)
+    Given a fixture app "large-build-app"
+    And a file named "config.rb" with:
+    """
+    activate :directory_indexes
+    move_file "/static/index.html", "/static2.html"
+    """
+    And the Server is running at "large-build-app"
+    When I go to "/static.html"
+    Then I should see 'Not Found'
+    When I go to "/static/index.html"
+    Then I should see 'Not Found'
+    When I go to "/static2.html"
+    Then I should see 'Static, no code!'
+

middleman-core/lib/middleman-core/sitemap/extensions/move_file.rb

@@ -0,0 +1,68 @@
+require 'middleman-core/sitemap/resource'
+require 'middleman-core/core_extensions/collections/step_context'
+
+module Middleman
+  module Sitemap
+    module Extensions
+      # Manages the list of proxy configurations and manipulates the sitemap
+      # to include new resources based on those configurations
+      class MoveFile < Extension
+        MoveFileDescriptor = Struct.new(:from, :to)
+
+        self.resource_list_manipulator_priority = 101
+
+        # Expose `create_move_file` to config as `move_file`
+        expose_to_config move_file: :create_move_file
+
+        def initialize(app, config={}, &block)
+          super
+
+          @move_configs = Set.new
+        end
+
+        def after_configuration
+          ::Middleman::CoreExtensions::Collections::StepContext.add_to_context(:move_file, &method(:create_move_file))
+        end
+
+        # Setup a move from one path to another
+        # @param [String] from The original path.
+        # @param [String] to The new path.
+        # @return [void]
+        Contract String, String, Maybe[Hash] => Any
+        def create_move_file(from, to)
+          @move_configs << create_anonymous_move(from, to)
+          @app.sitemap.rebuild_resource_list!(:added_move_file)
+        end
+
+        # Setup a move from one path to another
+        # @param [String] from The original path.
+        # @param [String] to The new path.
+        # @return [MoveFileDescriptor]
+        Contract String, String => MoveFileDescriptor
+        def create_anonymous_move(from, to)
+          MoveFileDescriptor.new(
+            ::Middleman::Util.normalize_path(from),
+            ::Middleman::Util.normalize_path(to)
+          )
+        end
+
+        # Update the main sitemap resource list
+        # @return Array<Middleman::Sitemap::Resource>
+        Contract ResourceList => ResourceList
+        def manipulate_resource_list(resources)
+          resources.each do |r|
+            matches = @move_configs.select do |c|
+              c.from == r.path || c.from == r.destination_path
+            end
+
+            if c = matches.last
+              r.destination_path = c.to
+            end
+          end
+
+          resources
+        end
+      end
+    end
+  end
+end

middleman-core/lib/middleman-core/sitemap/store.rb

@@ -33,6 +33,12 @@ Middleman::Extensions.register :sitemap_redirects, auto_activate: :before_config
   Middleman::Sitemap::Extensions::Redirects
 end
 
+# Move Files
+Middleman::Extensions.register :sitemap_move_files, auto_activate: :before_configuration do
+  require 'middleman-core/sitemap/extensions/move_file'
+  Middleman::Sitemap::Extensions::MoveFile
+end
+
 require 'middleman-core/contracts'
 
 module Middleman