Script for updating auto-complete CSS dictionary

update_css_dictionary.rb

#!/usr/bin/env ruby

require 'open-uri'
require 'nokogiri'
require 'set'

old_url = 'https://raw.githubusercontent.com/auto-complete/auto-complete/master/dict/css-mode'

old_properties = SortedSet.new
open(old_url).read.each_line do |line|
  old_properties.add(line.strip)
end

doc = Nokogiri::parse(open('http://www.w3schools.com/cssref/default.asp'))

new_properties = SortedSet.new
doc.css('table.reference > tr').each do |e|
  td = e.css('td')
  next if td.nil?
  next if td.first.nil?

  property = td.first.text
  property.strip!

  new_properties.add(property)
end

merged = old_properties | new_properties
merged.each do |property|
  puts property
end