#!/usr/bin/env ruby
#
# process each file in a given directory with the pngout utility
#  http://jonof.edgenetwork.org/?p=pngout

directory = Dir.new ARGV[0] ||= Dir.pwd
pngs = directory.entries.grep /png$/
pngs.each do |png|
  system "pngout #{directory.path + '/' + png}"
  puts "---------"
end
unless pngs.empty?
  puts "Processed #{pngs.size} images."
else
  puts "No PNGs to process in #{directory.path}"
end