hdif_podcast.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'nokogiri'
require 'open-uri'
require 'date'

#location = 'http://www.howdoesitfeel.co.uk/podcast.html'
location = './podcast.html'

podcast_page = Nokogiri::HTML(open(location))

titles = podcast_page.xpath(%q{//p[strong[contains(text(), 'HDIF Podcast')]]})

entries = titles.map do |title_elem| 
  title = title_elem.text
  date = Date.strptime(title.split(' - ').last, '%d/%m/%y')
  mp3_link = title_elem.xpath('./following-sibling::p[contains(text(), \'mp3\')]/a/@href').first.value
  {:title => title, :date => date, :url => mp3_link}
end

puts %Q{<?xml version="1.0" encoding="UTF-8"?>
<rss xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd" version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/">
<channel>
  <title>HDIF Podcast</title>
  <link>http://www.howdoesitfeel.co.uk/podcast.html</link>
  <ttl>40</ttl>
  <language>en-gb</language>
  <itunes:subtitle>The HDIF podcast</itunes:subtitle>
  <itunes:author>Ian Watson</itunes:author>
  <itunes:summary>I recently discovered that I had Garageband on my computer and that it could record podcasts, so I thought I'd give it a go. Here's the HDIF Podcast, a mix of indiepop and soul, with rambling commentary from yours truly.</itunes:summary>
  <description>I recently discovered that I had Garageband on my computer and that it could record podcasts, so I thought I'd give it a go. Here's the HDIF Podcast, a mix of indiepop and soul, with rambling commentary from yours truly.</description>
  <itunes:owner>
    <itunes:name>Ian Watson</itunes:name>
    <itunes:email>howdoesitfeel@btinternet.com</itunes:email>
  </itunes:owner>
  <itunes:image href="http://www.howdoesitfeel.co.uk/kissgoodnight62.jpg" />
  <itunes:category text="Music" />
  
  #{
  entries.map do |entry|
    %Q{  <item>
      <title>#{entry[:title]}</title>
      <itunes:subtitle>#{entry[:title]}</itunes:subtitle>
      <pubDate>#{entry[:date].to_time.strftime('%a, %d %b %Y %H:%M:%S GMT')}</pubDate>
      <guid>#{entry[:url]}</guid>
      <link>#{entry[:url]}</link>
      <enclosure url="#{entry[:url]}" type="audio/mpeg" length="100"/>

      <itunes:keywords>music, indiepop</itunes:keywords>
    </item>
}
  end.join("\n")
  }  
</channel>
</rss>
}