tail.css/bin/emit

#!/usr/bin/env ruby
$stdout.sync = true

def noecho
  system("stty -echo")
  yield
ensure
  system("stty echo")
end

def read
  noecho { $stdin.gets }
  .gsub(/[^A-Za-z0-9_\s\/\-,;:*"']/, '')
end

reads = 0
loop do
  tab, buf = "\t", read
  if IO.select([$stdin], [], [], 0.1).nil?
    reads = 0
    print buf.chomp, "}", "\n"
  elsif buf.include?(tab)
    print "}\n" if reads > 0
    class_name, class_body = buf.split(tab, 2)
    class_name.gsub!(%r|([/.])|) { "\\#{_1}" }
    print ".#{class_name} {", "\n", " " * 2, class_body.chomp, "\n"
    reads += 1
  else
    print " " * 2, buf
  end
end