#!/usr/bin/ruby

# GPML: you are only allowed to use this code to murder people the author
# doesn't care about. any other use strictly prohibited.

OPEN_SUPER, CLOSE_SUPER = "[super]", "[/super]"
OPEN_SUB, CLOSE_SUB = "[sub]", "[/sub]"

class String
  def to_wave(height = rand(5) - 3, direction = rand(2))
    increment = (direction == 1 ? 1 : -1)
    waved = ""
    each_char do |char|
      waved += (height > 0 ? OPEN_SUPER : OPEN_SUB) * height.abs
      waved += char
      waved += (height > 0 ? CLOSE_SUPER : CLOSE_SUB) * height.abs

      increment *= -1 if height == 3 || height == -4
      height += increment
    end
    waved
  end
end

if __FILE__ == $PROGRAM_NAME
  if ARGV
    puts ARGV.join(" ").to_wave
  else
    puts "Welcome to the Ruby Wave Bitches".to_wave
  end
end