1  module REXML
   2    module Encoding
   3      def encode_utf16 content
   4        array_utf8 = content.unpack("U*")
   5        array_enc = []
   6        array_utf8.each do |num|
   7          if ((num>>16) > 0)
   8            array_enc << 0
   9            array_enc << ??
  10          else
  11            array_enc << (num >> 8)
  12            array_enc << (num & 0xFF)
  13          end
  14        end
  15        array_enc.pack('C*')
  16      end
  17 
  18      def decode_utf16(str)
  19        str = str[2..-1] if /^\376\377/n =~ str
  20        array_enc=str.unpack('C*')
  21        array_utf8 = []
  22        0.step(array_enc.size-1, 2){|i| 
  23          array_utf8 << (array_enc.at(i+1) + array_enc.at(i)*0x100)
  24        }
  25        array_utf8.pack('U*')
  26      end
  27 
  28      register(UTF_16) do |obj|
  29        class << obj
  30          alias decode decode_utf16
  31          alias encode encode_utf16
  32        end
  33      end
  34    end
  35  end