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#! /usr/local/bin/ruby
require 'rubygems'
require 'nokogiri'
require 'css_parser'
puts "Report of Unused CSS Rules\n---\nHTML Path:\t" + ARGV[0] + "\n"
htmls = (`ack '' #{ARGV[0]} -l --type html`).split("\n").map { |html| Nokogiri::HTML(File.read(html)) }
styles = (1..ARGV.length-1).inject(Array.new) { |a, i| a | (`ack '' #{ARGV[i]} -l --type css`).split("\n") }
puts "\t- Checking " + htmls.length.to_s + " HTML file(s) against " + styles.length.to_s + " stylesheet(s)\n\n"
styles.each do |style|
        puts "Stylesheet:\t" + style
        (css = CssParser::Parser.new).load_file!(style)
        css.each_selector do |sel, dec, spe|
                begin
                        if (htmls.inject(false) { |a, html| a ||= html.css(sel).empty? }) then puts "\t- " + sel end
                rescue
                        puts "\t- IGNORING: #{sel}"
                end
        end
        puts "\n"
end