Add download directory in menu

Add subdirectory params for RepositoriesController#archive

app/controllers/projects/repositories_controller.rb

@@ -23,7 +23,7 @@ class Projects::RepositoriesController < Projects::ApplicationController
       append_sha = false if @filename == shortname
     end
 
-    send_git_archive @repository, ref: @ref, format: params[:format], append_sha: append_sha
+    send_git_archive @repository, ref: @ref, subdirectory: params[:subdirectory], format: params[:format], append_sha: append_sha
   rescue => ex
     logger.error("#{self.class.name}: #{ex}")
     git_not_found!

app/helpers/projects_helper.rb

@@ -26,6 +26,14 @@ module ProjectsHelper
 
     image_tag(src, width: opts[:size], class: classes, alt: '', "data-src" => avatar)
   end
+  
+  def is_directory
+    @path.empty? ? false : true
+  end
+
+  def get_directory_path
+    @path ? "#{@path}/" : ''
+  end
 
   def author_content_tag(author, opts = {})
     default_opts = { author_class: 'author', tooltip: false, by_username: false }

app/helpers/workhorse_helper.rb

@@ -31,6 +31,7 @@ module WorkhorseHelper
 
   # Archive a Git repository and send it through Workhorse
   def send_git_archive(repository, **kwargs)
+    kwargs.delete(:subdirectory) if kwargs[:subdirectory].nil?
     headers.store(*Gitlab::Workhorse.send_git_archive(repository, **kwargs))
     head :ok
   end

app/views/projects/buttons/_download.html.haml

@@ -8,8 +8,14 @@
       %span.sr-only=  _('Select Archive Format')
       = sprite_icon("arrow-down")
     %ul.dropdown-menu.dropdown-menu-right{ role: 'menu' }
+      - if is_directory
+        %li.dropdown-header
+          #{ _('Directory') }
+        %li
+          = link_to project_archive_path(project, subdirectory: get_directory_path, id: tree_join(ref, archive_prefix), format: 'zip'), rel: 'nofollow', download: '' do
+            %span=  _('Download zip')
       %li.dropdown-header
-        #{ _('Source code') }
+        #{ _('Repository') }
       %li
         = link_to project_archive_path(project, id: tree_join(ref, archive_prefix), format: 'zip'), rel: 'nofollow', download: '' do
           %span=  _('Download zip')