#!/usr/bin/ruby

require "rexml/document"
require "open-uri"

include REXML

def getComicImageElement( linkElement )
    imgElement = Element.new "img"
    imgElement.attributes['src'] = getImageSrc linkElement
    imgElement
end

def getImageSrc( linkElement )
    /cid=(.*)#/ =~ linkElement.text
    "http://www.pbfcomics.com/archive/#{$1}"
end

doc = Document.new open("http://www.pbfcomics.com/feed/feed.xml")

doc.elements.each("rss/channel/item") do |itemElement|
    itemElement.delete_element "description"
    CData.new getComicImageElement( itemElement.elements['link'] ).to_s, true, itemElement.add_element("description")
    itemElement.add_element('guid').text = itemElement.elements['link'].text
end

puts "content-type: application/xml"
puts

puts doc