#!/usr/bin/ruby

# Tom Luo
# tom.luo@gmail.com
# 2010/08/01

# install json
# sudo gem install json
# Follow the instructions in the post if you have problems installing json http://oracleabc.com/b/?p=339

#$KCODE='utf'
require 'pp'
require 'net/http'
require 'uri'
require 'rubygems'
require 'json'
require 'cgi'


def translate( string, to='zh-CN', from='en' )
# You will need to change the 'from' and 'to' arguments to your languages.

 url = 'http://ajax.googleapis.com/ajax/services/language/translate'

 # another url
 # http://translate.google.com/translate_a/t?client=t&text=oracle&sl=en&tl=zh-CN&pc=0&oc=1

 params = {
   :langpair => "#{from}|#{to}",
   :q => string,
   :v => 1.0
 }

 query = params.map{ |k,v| "#{k}=#{CGI.escape(v.to_s)}" }.join('&')

 resp = Net::HTTP.get_response( URI.parse( "#{url}?#{query}" ) )
 json = JSON.parse( resp.body )

if json['responseStatus'] == 200
   json['responseData']['translatedText']
  else
 #  return nil
   raise StandardError, resp['responseDetails']
 end
end


if __FILE__ == $0
 string = ARGV[0] || 'oracle'
 lang = ARGV[1] || 'zh-CN' # Chinese
 puts translate( string, lang  )
end