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progress_bar

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Command-line progress bars and spinners.

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progress_bar lib progress_bar utils.ex
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lib/progress_bar/utils.ex 

defmodule ProgressBar.Utils do

  def ansi_prefix do

    [

      ansi_clear_line, # So a shorter line can replace a previous, longer line.

      "\r", # Back to beginning of line.

    ] |> Enum.join

  end



  def strip_invisibles(string) do

    string |> String.replace(~r/\e\[\d*[a-zA-Z]|[\r\n]/, "")

  end



  defp ansi_clear_line do

    # This may become ANSI.IO.clear_line sometime after Elixir 1.1.0:

    # https://github.com/elixir-lang/elixir/pull/3755

    "\e[2K"

  end

end