Hacky script to count words in RSS feeds

feed_word_counter.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'hpricot'
require 'open-uri'


class String
  def strip_tags
    gsub(/&lt;/, '<').gsub(/&gt;/, '>').gsub(/<.*?>/, ' ').gsub(/&amp;#\d{4};/, '~')
  end
end

class Hpricot::Elem
  def inner_word_count
    @inner_word_count ||= inner_html.scan(/\w+/).size
  end
end

module Enumerable
  def sum;
    inject(0) { |sum, val| sum + val }
  end
end

uri = ARGV.first

doc = open(uri) { |f| Hpricot(f) }


(doc / 'item').each do |i|
  puts "#{(i / 'description').first.inner_word_count}: #{(i / 'title').inner_text}"
end

descrs = (doc / 'item' / 'description')

abort "No RSS item descriptions found" unless descrs.any?

sum = descrs.map { |d| d.inner_word_count }.sum


puts "\nAverage word count: #{sum / descrs.size.to_f}"