Sass / Less / Coffee compiler - Ruby command line

gistfile1.rb

#!/usr/bin/env ruby

# sudo gem install sass
# npm install less -g
# npm install coffee -g

p 'Dux sass/less/coffee compiler v0.1'

while true
	sleep 1 if (@last_mtime ||=0) > 0

	file = `find -type f | grep -i -e ".scss" -e ".coffee" -e ".less" | xargs ls -alt`.split("\n").first.split(/\s+/).last

	file_mtime = File.mtime(file).to_i
	next if @last_mtime == file_mtime
	@last_mtime = file_mtime

	elms = file.split('.')
	ext = elms.pop
	file_base = elms.join('.')

	case ext
		when /scssc/
			next
		when 'coffee'
			`coffee -c #{file}`
		when 'less'
			`/usr/local/lib/node_modules/less/bin/lessc #{file} #{file_base}.css`
		when 'scss'
			`sass #{file} > #{file_base}.css`
		else
			p "Unsupported - #{ext}"
		end

	p "OK: #{file}" if $? == 0

end