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quantum

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Cron-like job scheduler for Elixir.

Retired package: Security issue - v1 is no longer supported
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quantum lib quantum parser.ex
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lib/quantum/parser.ex 

defmodule Quantum.Parser do



  @moduledoc false



  def parse("*/" <> i, min, max) do

    min..max |> only_multiplier_of i

  end



  def parse(e, min, max) do

    [r|i] = e |> String.split("/")

    [x|y] = r |> String.split("-")

    v     = x |> String.to_integer

    do_parse(v, y, i, min, max) |> Enum.filter &(&1 in min..max)

  end



  defp do_parse(v, [], [], _, _), do: [v]



  defp do_parse(v, [], [i], _, _) do

    [rem(v, i |> String.to_integer)]

  end



  defp do_parse(v, [y], [], min, max) do

    t = y |> String.to_integer

    if v < t do

      Enum.to_list(v..t)

    else

      Enum.to_list(min..t) ++ Enum.to_list(v..max)

    end

  end



  defp do_parse(v, y, [i], min, max) do

    do_parse(v, y, [], min, max) |> only_multiplier_of i

  end



  defp only_multiplier_of(coll, i) do

    x = i |> String.to_integer

    coll |> Enum.filter &(rem(&1, x) == 0)

  end



end