Downloads podcasts from grailspodcast.com

get-grails-podcasts.rb

#!/usr/bin/ruby
# Downloads podcasts from http://www.grailspodcast.com
# Creates files named like this example:
#   grails_podcast_episode_17 - Interview with Jason Rudolph.mp3

require 'rubygems'
require 'mechanize'

agent = WWW::Mechanize.new do |a|
  a.user_agent_alias = 'Mac Safari'
end

archive = agent.get("http://www.grailspodcast.com/blog/list?offset=0&max=1000&sort=created&order=desc")

mp3s = archive.links.select do |link|
  begin
    link.uri.to_s.include? ".mp3"
  rescue
  end
end
puts "Found #{mp3s.size} MP3s"

captions = archive.links.select do |link|
  link.text.include? "Grails Podcast Episode"
end
puts "Found #{captions.size} captions"

i=0
mp3s.each do |mp3|
  cap = captions[i].text.split(':')[1]
  cap = " -#{cap}" unless cap == nil
  cap = '' if cap == nil
  file = mp3.uri.to_s.split('/')[-1].insert(-5, cap)
  `wget -N #{mp3} -O "#{file}"`
  i+=1
end