instance method get_order

# File actionmailer/lib/action_mailer/vendor/tmail-1.2.7/tmail/vendor/rchardet-1.3/lib/rchardet/jpcntx.rb, line 207
    def get_order(aStr)
      return -1, 1 unless aStr
      # find out current char's byte length
      aStr = aStr[0..1].join if aStr.class == Array
      if (aStr[0..0] == "\x8E") or ((aStr[0..0] >= "\xA1") and (aStr[0..0] <= "\xFE"))
        charLen = 2
      elsif aStr[0..0] == "\x8F"
        charLen = 3
      else
        charLen = 1
      end

      # return its order if it is hiragana
      if aStr.length > 1
        if (aStr[0..0] == "\xA4") and (aStr[1..1] >= "\xA1") and (aStr[1..1] <= "\xF3")
          return aStr[1] - 0xA1, charLen
        end
      end

      return -1, charLen
    end