Add Wiki#files for list of non-page files.

lib/gollum/wiki.rb

@@ -446,6 +446,15 @@ module Gollum
       tree_list(treeish || @ref)
     end
 
+    # Public: Lists all non-page files for this wiki.
+    #
+    # treeish - The String commit ID or ref to find  (default:  @ref)
+    #
+    # Returns an Array of Gollum::File instances.
+    def files(treeish = nil)
+      file_list(treeish || @ref)
+    end
+
     # Public: Returns the number of pages accessible from a commit
     #
     # ref - A String ref that is either a commit SHA or references one.
@@ -595,6 +604,24 @@ module Gollum
       end
     end
 
+    # Fill an array with a list of files.
+    #
+    # ref - A String ref that is either a commit SHA or references one.
+    #
+    # Returns a flat Array of Gollum::File instances.
+    def file_list(ref)
+      if sha = @access.ref_to_sha(ref)
+        commit = @access.commit(sha)
+        tree_map_for(sha).inject([]) do |list, entry|
+          next list if entry.name.start_with?('_')
+          next list if @page_class.valid_page_name?(entry.name)
+          list << entry.file(self, commit)
+        end
+      else
+        []
+      end
+    end
+
     # Creates a reverse diff for the given SHAs on the given Gollum::Page.
     #
     # page   - The Gollum::Page to scope the patch to, or a String Path.