Manejo de RSS con Ruby

Recientemente investigé un poco como manejar los RSS con Ruby y encontré varias APIs, como FeedTools, FeedUpdater, RSSRuby, etc.

Y aquí les dejo un código (que ya probé y funciona).

Para escribir RSS:


require 'rss/maker'

version = "2.0" # ["0.9", "1.0", "2.0"]
destination = "test_maker.xml" # local file to write

content = RSS::Maker.make(version) do |m|
m.channel.title = "Example Ruby RSS feed"
m.channel.link = "http://www.rubyrss.com"
m.channel.description = "Old news (or new olds) at Ruby RSS"
m.items.do_sort = true # sort items by date

i = m.items.new_item
i.title = "Ruby can parse RSS feeds"
i.link = "http://www.rubyrss.com/"
i.date = Time.parse("2007/2/11 14:01")

i = m.items.new_item
i.title = "Ruby can create RSS feeds"
i.link = "http://www.rubyrss.com/"
i.date = Time.now
end

File.open(destination,"w") do |f|
f.write(content)
end

Y para leer:

require 'rss/1.0'
require 'rss/2.0'
require 'open-uri'

source = "http://rubyforge.org/export/rss_sfnewreleases.php" # url or local file
content = "" # raw content of rss feed will be loaded here
open(source) do |s| content = s.read end
rss = RSS::Parser.parse(content, false)