Download files from a yaml file

download_from_yml.rb

##
# Where yaml file looks like:
# ---
# directory:
#   - url
# directory2:
#    - url
# ---
# Script will create the directories if they need creating
# and download the resource at each url into that directory
#
# Ruby is fun
##
require 'yaml'
require 'fileutils'
require 'curb'
ARGV.each do |a|
  dir = Dir.pwd()+"/"
  path = dir+a
  if File.exists?(path)
    file = File.read(path)
    yaml = YAML.load(file)
    for y in yaml
      FileUtils::mkdir_p dir+y[0]
      Dir.chdir(dir+y[0])
      for url in y[1]
        c = Curl::Easy.perform(url)
        filename = c.url.split(/\?/).first.split(/\//).last
        File.open(filename, 'wb') do |f|
          c.on_body {|data| f << data; data.size }
          c.perform
          puts "=> '#{filename}'"
        end
      end
    end
  end
end