samqiu · December 9, 2022 03:49 · samqiu · Dec 13, 2011 · zhangjingqiang · Feb 11, 2012
diff --git a/railscasts.rb b/railscasts.rb
 #!/usr/bin/ruby
 require 'rss'

 # Usage
 # $ ./railscasts.rb http://railscasts.com/subscriptions/YOURRAILSCASTRSS/\/
 #     episodes.rss
 # OR
 # $ ./railscasts.rb

 p 'Downloading rss index'
 rss_url = ARGV.first ? ARGV.first : 'http://feeds.feedburner.com/railscasts'

 rss_string = open(rss_url).read
 rss = RSS::Parser.parse(rss_string, false)
 videos_urls = rss.items.map { |it| it.enclosure.url }.reverse

 videos_filenames = videos_urls.map { |url| url.split('/').last }
 existing_filenames = Dir.glob('*.mov')
 missing_filenames = videos_filenames - existing_filenames
 p "Downloading #{missing_filenames.size} missing videos"

 missing_videos_urls = videos_urls.select { |video_url|
  missing_filenames.any? { |filename| video_url.match filename }
 }

 missing_videos_urls.each do |video_url|
  filename = video_url.split('/').last
  next if File.exists? filename

  p filename
  p %x(wget #{video_url} -O #{filename}.tmp )
  p %x(mv #{filename}.tmp #{filename} )
 end

 p 'Finished synchronization'
	#!/usr/bin/ruby
	require 'rss'

	# Usage
	# $ ./railscasts.rb http://railscasts.com/subscriptions/YOURRAILSCASTRSS/\/
	# episodes.rss
	# OR
	# $ ./railscasts.rb

	p 'Downloading rss index'
	rss_url = ARGV.first ? ARGV.first : 'http://feeds.feedburner.com/railscasts'

	rss_string = open(rss_url).read
	rss = RSS::Parser.parse(rss_string, false)
	videos_urls = rss.items.map { \|it\| it.enclosure.url }.reverse

	videos_filenames = videos_urls.map { \|url\| url.split('/').last }
	existing_filenames = Dir.glob('*.mov')
	missing_filenames = videos_filenames - existing_filenames
	p "Downloading #{missing_filenames.size} missing videos"

	missing_videos_urls = videos_urls.select { \|video_url\|
	missing_filenames.any? { \|filename\| video_url.match filename }
	}

	missing_videos_urls.each do \|video_url\|
	filename = video_url.split('/').last
	next if File.exists? filename

	p filename
	p %x(wget #{video_url} -O #{filename}.tmp )
	p %x(mv #{filename}.tmp #{filename} )
	end

	p 'Finished synchronization'