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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.ex
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lib/progress_bar.ex 

defmodule ProgressBar do

  def render(current..total, custom_format \\ default_format) do

    format = Keyword.merge(default_format, custom_format)



    bar = String.duplicate(format[:bar], current)

    blank = String.duplicate(format[:blank], total - current)



    IO.write "\r#{format[:left]}#{bar}#{blank}#{format[:right]}"

  end



  def done do

    IO.write "\n"

  end



  defp default_format do

    [

      bar: "=",

      blank: " ",

      left: "|",

      right: "|",

    ]

  end

end