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An Elixir library for handling word inflections.

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inflex lib inflex underscore.ex
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lib/inflex/underscore.ex 

defmodule Inflex.Underscore do



  defmacro __using__([]) do

    quote do

      import unquote __MODULE__



      def underscore(atom) when is_atom(atom) do

        case Atom.to_string(atom) do

          "Elixir." <> rest -> underscore(rest)

          word -> underscore(word)

        end

      end



      def underscore(word) when is_binary(word) do

        word

        |> String.replace(~r/([A-Z]+)([A-Z][a-z])/, "\\1_\\2")

        |> String.replace(~r/([a-z\d])([A-Z])/, "\\1_\\2")

        |> String.replace(~r/-/, "_")

        |> String.downcase

      end



    end

  end

end