space_case method for strings to humanize camelcase class names

gistfile1.rb

class String

  # Change "HelloWorld" into "Hello World" while keeping "HELLOWORLD" as "HELLOWORLD"
  # Useful as an alternative to humanize when presenting a list of class names

  def space_case
    split(/((?<=[a-z])[A-Z])/).inject { |whole, part| whole += (part =~ /^[A-Z]$/) ? " #{part}" : part }
  end

end