Get exchange rates for USD and EUR from the National Bank of Romania

#!/usr/bin/env ruby

URL="http://www.bnro.ro/nbrfxrates.xml"
OUTPUT_DIR="/home/grn/invoicer/currencies"

%w[rubygems net/http].each { |x| require x }
gem 'hpricot', '>= 0.6'
require 'hpricot'

today = Time.new.strftime('%Y%m%d')
f = File.open("#{OUTPUT_DIR}/#{today}", "w")

begin
  xml = Net::HTTP.get URI.parse(URL)
rescue 
 puts "Error downloading XML file!"
 exit
end

puts "Today's exchange rates :\n\n"

doc = Hpricot::XML(xml)
(doc/:Rate).each do |c|
  ca = c.attributes["currency"]
  if ca == "USD" || ca == "EUR" then
    f.write "#{ca}:#{c.innerHTML}\n"
    puts "#{ca}:#{c.innerHTML}\n"
  end 
end