Example for the rubygem Json parsing

jasonparse.rb

#!/usr/bin/env ruby
#Simple example of using json ruby gem.

require 'rubygems'
require 'json'
require 'net/http'

def news_search(query, results=10, start=1)
   base_url = "http://search.yahooapis.com/NewsSearchService/V1/newsSearch?appid=YahooDemo&output=json"
   url = "#{base_url}&query=#{URI.encode(query)}&results=#{results}&start=#{start}"
   resp = Net::HTTP.get_response(URI.parse(url))
   data = resp.body

   # we convert the returned JSON data to native Ruby
   # data structure - a hash
   result = JSON.parse(data)

   # if the hash has 'Error' as a key, we raise an error
   if result.has_key? 'Error'
      raise "web service error"
   end
   return result
end