hue.rb

# frozen_string_literal: true
module Hue
  # Calculate a hue +value+ between 1 and 360 from a +String+ value.
  #
  # = Usage
  #
  #   hue = Hue.from_string("Adam Daniels")
  #   css = "background-color: hsl(#{hue}, 100%, 30%);"
  def self.from_string(value)
    djb2(value) % 360
  end

  def self.djb2(value)
    hash = 5381
    value.each_byte do |b|
      hash = (((hash << 5) + hash) + b) % (2 ** 32)
    end
    hash
  end
end