3 files changed, 45 insertions, 15 deletions
diff --git a/lib/rexml/encodings/EUC-JP.rb b/lib/rexml/encodings/EUC-JP.rb
index 684df0bbd6..db37b6bf0d 100644
--- a/lib/rexml/encodings/EUC-JP.rb
+++ b/lib/rexml/encodings/EUC-JP.rb
@@ -1,13 +1,28 @@
-require 'uconv'
-
 module REXML
   module Encoding
-    def decode_eucjp(str)
-      Uconv::euctou8(str)
-    end
+    begin
+      require 'uconv'
+
+      def decode_eucjp(str)
+        Uconv::euctou8(str)
+      end
+
+      def encode_eucjp content
+        Uconv::u8toeuc(content)
+      end
+    rescue LoadError
+      require 'nkf'
+
+      EUCTOU8 = '-Ewm0'
+      U8TOEUC = '-Wem0'
 
-    def encode_eucjp content
-      Uconv::u8toeuc(content)
+      def decode_eucjp(str)
+        NKF.nkf(EUCTOU8, str)
+      end
+
+      def encode_eucjp content
+        NKF.nkf(U8TOEUC, content)
+      end
     end
 
     register("EUC-JP") do |obj|
diff --git a/lib/rexml/encodings/SHIFT-JIS.rb b/lib/rexml/encodings/SHIFT-JIS.rb
index d055d0c761..93c7877afd 100644
--- a/lib/rexml/encodings/SHIFT-JIS.rb
+++ b/lib/rexml/encodings/SHIFT-JIS.rb
@@ -1,13 +1,28 @@
-require 'uconv'
-
 module REXML
   module Encoding
-    def decode_sjis content
-      Uconv::sjistou8(content)
-    end
+    begin
+      require 'uconv'
+
+      def decode_sjis content
+        Uconv::sjistou8(content)
+      end
+
+      def encode_sjis(str)
+        Uconv::u8tosjis(str)
+      end
+    rescue LoadError
+      require 'nkf'
+
+      SJISTOU8 = '-Swm0'
+      U8TOSJIS = '-Wsm0'
 
-    def encode_sjis(str)
-      Uconv::u8tosjis(str)
+      def decode_sjis(str)
+        NKF.nkf(SJISTOU8, str)
+      end
+
+      def encode_sjis content
+        NKF.nkf(U8TOSJIS, content)
+      end
     end
 
     b = proc do |obj|
diff --git a/lib/rexml/encodings/SHIFT_JIS.rb b/lib/rexml/encodings/SHIFT_JIS.rb
index 2fc0b28306..e355704a7c 100644
--- a/lib/rexml/encodings/SHIFT_JIS.rb
+++ b/lib/rexml/encodings/SHIFT_JIS.rb
@@ -1 +1 @@
-load 'rexml/encodings/SHIFT-JIS.rb'
+require 'rexml/encodings/SHIFT-JIS'