example

ml =GoogleTransliterate.new('poda poda').transliterated_text

google_transliterate.rb

require 'json'
require 'open-uri'
class GoogleTransliterate
  API_URL = "http://www.google.com/uds/Gtransliterate"
  EN_ML_PARAM = "?context=22&langpair=en|ml&key=notsupplied&v=1.0"
  def initialize(words_array)
    if words_array.length > 5
      raise 'TooManyWords'
    else
      @words = words_array
    end
  end
  def param
    '&q='+@words.join('&q=')
  end
  def result
    @result ||=JSON.parse(open(URI.encode(API_URL+EN_ML_PARAM+param)).read)
  end
  def transliterated_text
    result_str = result
    if result_str['responseStatus']==200
      resp = result_str['responseData']
      mal = ''
      unless resp.nil?
        result_str['responseData']['transliterations'].each do |trans|
          mal += (trans['transliteratedWords'][0] unless trans['transliteratedWords'].nil?)||trans['sourceWord']
        end
      end
      mal
    else
      raise result_str['responseDetails']
      nil
    end
  end
end

class Transliterator
  def initialize(source_text)
    words = source_text.split(/(\W)/)
    @words = words.each_slice(5)
  end
  def result
    result_text = ''
    @words.each do |words|
      ml =GoogleTransliterate.new(words).transliterated_text
      result_text += ml
    end
    result_text
  end
end