#!/usr/bin/ruby
#
# Generate a lookup table for figlet-based captchas
# The output format is "token MD5
# The MD5 is computed of the full output of figlet, including empty lines.
#
# Usage: figletcha.rb starttok endtok figletopts
# Example: figletcha.rb AAAAAA ZZZZZZ -k -f big

require "digest/md5"

token = "#{ARGV[0]}"
end_token = ARGV[1];

figletopts = ARGV[2..-1].join(" ")

while true do
  data = %x{figlet #{figletopts} #{token}}
  data.gsub!(/(^|\n) *(\n|$)/s, "");
  puts "#{token} #{Digest::MD5.hexdigest(data)}"
  break if (token == end_token)
  token.succ!
end