* lib/rss/converter.rb (RSS::Converter): use String#encode.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20079 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Fri Oct 31 21:58:50 2008  Kouhei Sutou  <kou@cozmixng.org>
+
+	* lib/rss/converter.rb (RSS::Converter): use String#encode.
+
 Fri Oct 31 21:28:14 2008  Yusuke Endoh  <mame@tsg.ne.jp>
 
 	* lib/webrick/httpauth/digestauth.rb

lib/rss/converter.rb

@@ -7,6 +7,10 @@ module RSS
     include Utils
 
     def initialize(to_enc, from_enc=nil)
+      if "".respond_to?(:encode)
+        @to_encoding = to_enc
+        return
+      end
       normalized_to_enc = to_enc.downcase.gsub(/-/, '_')
       from_enc ||= 'utf-8'
       normalized_from_enc = from_enc.downcase.gsub(/-/, '_')
@@ -23,8 +27,12 @@ module RSS
     end
 
     def convert(value)
+      if value.is_a?(String) and value.respond_to?(:encode)
+        value.encode(@to_encoding)
+      else
         value
       end
+    end
 
     def def_convert(depth=0)
       instance_eval(<<-EOC, *get_file_and_line_from_caller(depth))