parse.rb

require 'httparty'
require 'nokogiri'
require 'pry'

curr = {}
stats = nil
begin
  res = HTTParty.get("http://www.xe.com/iso4217.php")
  html = Nokogiri::HTML.parse(res)
  links = html.css("#currencyTable td a").map { |a| a["href"] }.reject { |link| link[0] == "#" }

  currencies = []

  links.each do |l|
    curr = {}
    uri = URI.extract(URI.encode("http://www.xe.com#{l}")).first
    curr_description = HTTParty.get(uri)
    desc_html = Nokogiri::HTML.parse(curr_description)
    short_name = desc_html.css(".currencystats .factsTitle").first.text
    curr[:short_name] = short_name[0,3]
    stats = desc_html.css(".currencystats p").map { |p| p.text }
    matches = stats[0].match(/Name: (.*)$/)
    curr[:name] = matches[1]
    matches = stats[1].match(/\s*Symbol: (.*)\s(.*):? ?(.*)/)
    if matches.nil?
      curr[:bad_symbol] = stats[1]
    else
      curr[:symbol] = matches[1]
      curr[:minor_name] = matches[2]
      curr[:minor_symbol] = matches[3]
    end

    currencies << curr
    puts curr
  end

  CSV.open("data.csv", "wb") do |csv|
    csv << ["short_name", "name", "symbol", "minor_name", "minor_symbol", "bad_symbol"]
    currencies.each do |hash|
      csv << hash.values_at(:short_name, :name, :symbol, :minor_name, :minor_symbol, :bad_symbol)
    end
  end
rescue StandardError => e
  binding.pry
end