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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.
# Formats returned values e.g. to human-readable text or JSON.
defmodule RabbitMQ.CLI.FormatterBehaviour do
alias RabbitMQ.CLI.Core.Helpers
@callback format_output(any, map()) :: String.t() | [String.t()]
@callback format_stream(Enumerable.t(), map()) :: Enumerable.t()
@optional_callbacks switches: 0,
aliases: 0
@callback switches() :: Keyword.t()
@callback aliases() :: Keyword.t()
def switches(formatter) do
Helpers.apply_if_exported(formatter, :switches, [], [])
end
def aliases(formatter) do
Helpers.apply_if_exported(formatter, :aliases, [], [])
end
def module_name(nil) do
nil
end
def module_name(formatter) do
mod = formatter |> String.downcase |> Macro.camelize
Module.safe_concat("RabbitMQ.CLI.Formatters", mod)
end
def machine_readable?(nil) do
false
end
def machine_readable?(formatter) do
Helpers.apply_if_exported(module_name(formatter), :machine_readable?, [], false)
end
end
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