filter/2

gistfile1.txt

The input tuple is emitted by `Toml.decode/2`.

@spec filter({atom, any}, String.t) :: map
# @spec filter( {:ok | :error, any}, String.t) :: map

  defp filter({status, payload}, trim_path) do
  #
  # Filter the parsing results, reporting and removing cruft.
  # If a problem is detected, report it and return an empty Map.
  # Otherwise, return the parsed data.

    cond do
      status == :error ->
        IO.puts "\nIgnored: " <> trim_path
        IO.puts "Because: " <> inspect(payload)
        %{}

      not(is_map(payload))  ->
        IO.puts "\nIgnored: " <> trim_path
        IO.puts "Because: Payload is not a Map."
        %{}
      
      Enum.empty?(payload)  ->
        IO.puts "\nIgnored: " <> trim_path
        IO.puts "Because: Payload is empty."
        %{}

      true -> payload
    end