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+## This Source Code Form is subject to the terms of the Mozilla Public
+## License, v. 2.0. If a copy of the MPL was not distributed with this
+## file, You can obtain one at https://mozilla.org/MPL/2.0/.
+##
+## Copyright (c) 2007-2020 VMware, Inc. or its affiliates. All rights reserved.
+
+defmodule RabbitMQ.CLI.PrinterBehaviour do
+ @callback init(options :: map()) :: {:ok, printer_state :: any} | {:error, error :: any}
+ @callback finish(printer_state :: any) :: :ok
+
+ @callback print_output(output :: String.t() | [String.t()], printer_state :: any) :: :ok
+ @callback print_ok(printer_state :: any) :: :ok
+
+ def module_name(nil) do
+ nil
+ end
+ def module_name(printer) do
+ mod = printer |> String.downcase |> Macro.camelize
+ String.to_atom("RabbitMQ.CLI.Printers." <> mod)
+ end
+end