joueurs.txt

Parsing

defmodule Player do
  defstruct [:id, :name, :country, :rating]
end

joueurs =
  File.read!(Path.expand("~/jou.txt"))
  |> String.split("\n", trim: true)

defmodule Joueurs do
  def parse(lines), do: p_lines(lines, :nc)

  defp p_lines([<<"%", _::binary>> | t], c), do: p_lines(t, c)

  defp p_lines([<<"pays = ", c::binary>> | t], _),
    do: p_lines(t, c |> String.downcase() |> String.to_atom())

  defp p_lines([line | t], c), do: [p_player(c, line) | p_lines(t, c)]
  defp p_lines([], _), do: []

  defp p_player(c, line) do
    {idn, r} =
      case String.split(line, "%") do
        [idn] ->
          {idn, nil}

        [idn, r] ->
          {r, ""} = Integer.parse(r |> String.trim_leading("_<") |> String.trim_trailing(">"))
          {idn, r}
      end

    [id, name] = idn |> String.trim() |> String.split(" ", parts: 2)
    {id, ""} = Integer.parse(id)
    %Player{id: id, country: c, name: name, rating: r}
  end
end

players =
  joueurs
  |> Joueurs.parse()
  |> Enum.filter(&(&1.rating >= 0 && &1.rating))
  |> Enum.sort_by(&(-&1.rating))