+ file = args.shift
+ mode = args.shift
+ options = args.shift || {}
+
+ if mode == 'w'
+ case options[:compress]
+ when :gzip
+ ios = Zlib::GzipWriter.new File.open(file, mode, options)
+ when :bzip, :bzip2
+ ios = Bzip2::Writer.new File.open(file, mode, options)
+ else
+ ios = File.open(file, mode, options)
+ end