compass callback to restructure css files on stylesheet saved

combineMediaQueriesAndSelectors.rb

require 'fileutils'
on_stylesheet_saved do |filename|
	fileContents = File.read filename
	File.open(filename, 'w+') do |f|
		mediaQueryObject = {}
		regexMedia = /@media([^{]*){((?:(?!}\s*}).)*}.*?)}/xoim
		regexSelector = /\s*([^{]*){(.*?)}/xoim
		regexSpace = /\n+|\r+/xoim
		bodyContents = fileContents.gsub(regexMedia,'')
		mediaQueryArray = fileContents.scan(regexMedia)

		mediaQueryArray.each do |media_name, media_value|
			if !mediaQueryObject[media_name]
			   mediaQueryObject[media_name] = ""
			end
			mediaQueryObject[media_name] << media_value
		end

		mediaQueryObject.each do |media_name, media_value|
			selectorObject = {}

			selectorArray = media_value.scan(regexSelector)

			selectorArray.each do |selector_name, selector_value|
				if !selectorObject[selector_name]
				   selectorObject[selector_name] = ""
				end
				selectorObject[selector_name] << selector_value
			end

			mediaQueryObject[media_name] = media_value.gsub(regexSelector,'')

			selectorObject.each do |selector_name, selector_value|

				mediaQueryObject[media_name] << "\n\t" + selector_name + "{" + selector_value + "}\n"
			end

			bodyContents << "@media" + media_name + "{" + mediaQueryObject[media_name] + " }\n"

		end

		finalContents = bodyContents.gsub(regexSpace,"\n")
		f.write(finalContents)
	end
end