- def self.valid?(str)
- return true if str.nil?
- Iconv.conv("UTF-8", "UTF-8", str)
- return true
-
- rescue
- return false
- end
-end
+ if String.new.respond_to?("valid_encoding?")
+ def self.valid?(str)
+ return true if str.nil?
+ return str.valid_encoding?
+ end
+ else
+ require 'iconv'