Merge pull request #1 from darrencauthon/rubyize

Thanks I'm not that much of a rubyist (apart from making rake tasks to build my stuff), and I did this at like 3 am this morning so I was super tired....

getazure.rb

@@ -4,14 +4,23 @@ require 'nokogiri'
 require 'fileutils'
 
 FileUtils.mkdir_p 'downloads/'
-FileUtils.cd 'downloads/'
-xml = Nokogiri::XML(open('http://s.ch9.ms/Shows/Azure-Friday/feed/mp4high'))
-item = xml.xpath('//item')
 
-item.each do |s|
-next if File.exist? s.at('enclosure')['url'].to_s.split('/').last
-File.open("#{s.at('enclosure')['url'].to_s.split('/').last}", "wb") do |file|
-			puts " downloading " + s.at('enclosure')['url'].to_s.split('/').last
-				file.write open("#{s.at('enclosure')['url']}").read
-			end
+def podcasts
+  feed = 'http://s.ch9.ms/Shows/Azure-Friday/feed/mp4high'
+  Nokogiri::XML(open(feed)).xpath('//item')
 end
+
+podcasts.each do |podcast|
+  source      = podcast.at('enclosure')['url'].to_s
+  name        = source.split('/').last
+  local_file  = "downloads/#{name}"
+
+  next if File.exist? local_file
+
+  File.open(local_file, "wb") do |file|
+    puts " downloading " + name
+    file.write open(source).read
+  end
+end
+
+puts 'all done!