1  module REXML
   2    module Encoding
   3      # Convert from UTF-8
   4      def encode_ascii content
   5        array_utf8 = content.unpack('U*')
   6        array_enc = []
   7        array_utf8.each do |num|
   8          if num <= 0x7F
   9            array_enc << num
  10          else
  11            # Numeric entity (&#nnnn;); shard by  Stefan Scholl
  12            array_enc.concat "&\##{num};".unpack('C*')
  13          end
  14        end
  15        array_enc.pack('C*')
  16      end
  17 
  18      # Convert to UTF-8
  19      def decode_ascii(str)
  20        str.unpack('C*').pack('U*')
  21      end
  22 
  23      register("US-ASCII") do |obj|
  24        class << obj
  25          alias decode decode_ascii
  26          alias encode encode_ascii
  27        end
  28      end
  29    end
  30  end