class String

def camelize(uppercase_first_letter = true)
  string = self
  if uppercase_first_letter
    string = string.sub(/^[a-z\d]*/) { $&.capitalize }
  else
    string = string.sub(/^(?:(?=\b|[A-Z_])|\w)/) { $&.downcase }
  end
  string.gsub!(%r{(?:_|(\/))([a-z\d]*)}i) do
    "#{Regexp.last_match(1)}#{Regexp.last_match(2).capitalize}"
  end
  string.gsub!(%r{/}, '::')
  string
end unless ''.respond_to?(:camelize)

def classify
  camelize(sub(/.*\./, ''))
end unless ''.respond_to?(:classify)