Download DAS

download_das.rb

#! /usr/bin/env ruby

require 'mechanize'

agent = Mechanize.new
agent.pluggable_parser.default = Mechanize::Download

agent.get 'https://www.destroyallsoftware.com/screencasts/catalog'
episodes = agent.page.search('.episode > a').map { |a| a['href'] }

puts episodes
episodes_meta = episodes.map do |screencast, index|
  page = agent.get 'https://www.destroyallsoftware.com' + screencast
  puts page.title
  url = page.search('video + script').first.children.first.to_s.match(/\s+source\.src\s=\s"(.+?)"/)[1]
  puts url
  title = URI(url).path[1..-1]
  { url: url, title: title }
end

puts "About to download #{episodes_meta.length} episodes... hold tight."

episodes_meta.each_slice(14) do |slice|
  fork do
    slice.each do |meta|
      system('wget', '--quiet', '-O', meta[:title], meta[:url])
      puts "Finished #{meta[:title]}"
    end
  end
end

Process.waitall