Scrollbar if someone creates too many electons to fit within defualt given room for...

[selectricity] / lib / uniq_token.rb

require 'digest/md5'

class UniqueTokenGenerator
  def initialize(length=10)
    @length = length 
  end

  # this should probably be rewritten as a class method
  def token
    token = ""
    while token.length < @length
      seed = ""
      16.times do
        seed << ( i = Kernel.rand(62)
                  i += ((i < 10) ? 48 : ((i < 36) ? 55 : 61 )) ).chr
      end
      token << Digest::MD5.hexdigest( seed )
    end
    token.slice( 0..@length )
  end
end

# debug code
# puts UniqueTokenGenerator.new(300).token