Merge 68b337d into 1f30a69

lib/tukune/git/diff.rb

@@ -1,32 +1,43 @@
+require 'mem'
+
 module Tukune
   module Git
     class Diff
+      include Mem
+
       attr_reader :changed_files
 
-      def initialize(changed_files)
-        @changed_files = changed_files
+      def initialize(target_paths)
+        @target_paths = target_paths.join(' ')
       end
 
       def nothing_to_commit?
         changed_files.empty?
       end
 
       def added_files
-        `git ls-files --others --exclude-standard`.strip.split("\n")
+        `git ls-files --others --exclude-standard #{@target_paths}`.strip.split("\n")
       end
+      memoize :added_files
 
       def modified_files
         changed_files.select { |type, _| type == 'M' }.map { |_, name| name }
       end
+      memoize :modified_files
 
       def deleted_files
         changed_files.select { |type, _| type == 'D' }.map { |_, name| name }
       end
+      memoize :deleted_files
+
+      def changed_files
+        @changed_files ||= `git diff --name-status #{@target_paths}`.strip.split("\n").map { |e| e.split("\t") }
+      end
+      memoize :changed_files
 
       class << self
-        def name_status
-          changed_files ||= `git diff --name-status`.strip.split("\n").map { |e| e.split("\t") }
-          Diff.new(changed_files)
+        def name_status(target_paths = [])
+          Diff.new(target_paths)
         end
       end
     end