gistfile1.rb

def obfuscate (str, passes) 
	while passes > 0
		lines = str.split()
		percent = Random.new.rand(15..20)
		line_count = int(percent / lines.length)
                lines_end = lines.length - line_count
		line_num = Random.new.rand(1..lines_end)
                lbegin = line_num
                uend = line_num + line_count
                until line_num = lines_end
                	newlines.push(lines[line_num])
			++line_num
                end
		startlabel = "open_" + passes
                endlabel = "close_" + passes
                lines.push(endlabel + ":")
		newlines.each do |entry|
                    lines.push(entry)
		end
		lines.push("jmp " + startlabel)
                lines[lbegin] = "jmp " + endlabel;
                ++lbegin
                lines[lbegin] = startlabel + ":"
		++lbegin
		lines.slice(lbegin..uend)
                --passes
                lines.each do |e|
                	nstr = e + "\n"
                end
                obfuscate(nstr, passes)
        end
        return nstr
end