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elixir-koans/lib/display/colours.ex
2018-05-22 21:46:54 +01:00

34 lines
798 B
Elixir

defmodule Display.Paint do
def red(str), do: painter().red(str)
def cyan(str), do: painter().cyan(str)
def green(str), do: painter().green(str)
def yellow(str), do: painter().yellow(str)
defp painter do
case Mix.env() do
:test -> Display.Uncoloured
_ -> Display.Colours
end
end
end
defmodule Display.Colours do
alias IO.ANSI
def red(str), do: colourize(ANSI.red(), str)
def cyan(str), do: colourize(ANSI.cyan(), str)
def green(str), do: colourize(ANSI.green(), str)
def yellow(str), do: colourize(ANSI.yellow(), str)
defp colourize(color, message) do
Enum.join([color, message, ANSI.reset()], "")
end
end
defmodule Display.Uncoloured do
def red(str), do: str
def cyan(str), do: str
def green(str), do: str
def yellow(str), do: str
end