lib/sfc-room/utils.rb in sfc-room-0.0.1 vs lib/sfc-room/utils.rb in sfc-room-0.1.0

@@ -1,17 +1,20 @@
 #coding:UTF-8
 require 'nkf'
-require 'jcode' if RUBY_VERSION < "1.9"
 
 module SFCRoom::Utils
   def self.greek_downcase str
-    str.tr('Α-Ω','α-ω')
+    encoding = str.encoding
+    return str.encode(Encoding::UTF_8).tr('Α-Ω','α-ω').encode(encoding)
   end
   def self.greek_upcase str
+    encoding = str.encoding
+    return str.encode(Encoding::UTF_8).tr('α-ω','Α-Ω').encode(encoding)
     str.tr('α-ω','Α-Ω')
   end
   def self.hankaku_zenkaku str
-    NKF::nkf('-Z1 -Ww',str)
+    encoding = str.encoding
+    return NKF::nkf('-Z1 -Ww',str).encode(encoding)
   end
 
   def self.convert_for_search str
     self.hankaku_zenkaku self.greek_downcase(str).downcase
   end