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phoenix

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Productive. Reliable. Fast. A productive web framework that does not compromise speed or maintainability.

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phoenix lib phoenix status status.ex
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lib/phoenix/status/status.ex 

defmodule Phoenix.Status do



  @moduledoc """

  Conversion for transforming atoms to http status codes.

  """



  defmodule InvalidStatus do

    defexception [:message]



    def exception(value) do

      %InvalidStatus{message: "Invalid HTTP status #{inspect value}"}

    end

  end



  for line <- File.stream!(Path.join([__DIR__, "status.txt"]), [], :line) do

    [code, message] = line |> String.split("\t") |> Enum.map(&String.strip(&1))

    code = String.to_integer code

    atom = message

           |> String.downcase

           |> String.replace(~r/[^\w]+/, "_")

           |> String.to_atom



    def code(unquote(atom)), do: unquote(code)

  end



  @doc """

  Convert atom to http status code.



  When passed an integer status code, simply returns it, valid or not.



  Examples

  iex> Status.code(:ok)

  200



  iex> Status.code(200)

  200

  """

  def code(code) when is_integer(code), do: code

  def code(atom), do: raise(InvalidStatus, atom)

end