print_uniq_selectors.rb

#! /usr/bin/env ruby
# -*- coding: utf-8 -*-
# css ファイルのなかのセレクタを一覧で出力する
# 参考: http://qiita.com/walf443/items/6524a3d042365f7f98dc

require 'sass/css'

def print_uniq_selectors(file)
  css = ""
  File.open(file) do |io|
    css = io.read
  end
  css = Sass::CSS.new(css, {:filename => file})
  css_tree = css.__send__(:build_tree)
  selectors = []
  css_tree.select {|n| n.is_a?(Sass::Tree::RuleNode) }.each do |rule|
    selectors.push rule.parsed_rules.members
  end
  selectors.uniq!
  selectors.each_with_index do |selector, i|
    puts "#{i+1}: #{selector}"
  end
end

print_uniq_selectors(ARGV[0])