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+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.OTPVersion do
+ @spec version() :: String.t() | nil
+ def version do
+ # OTP Version https://erlang.org/doc/system_principles/versions.html#otp-version
+ [
+ Path.join(:code.root_dir(), "OTP_VERSION"),
+ Path.join([:code.root_dir(), "releases", :erlang.system_info(:otp_release), "OTP_VERSION"])
+ ]
+ |> get_version_from_files()
+ end
+
+ @spec get_version_from_files([Path.t()]) :: String.t() | nil
+ def get_version_from_files([]), do: nil
+
+ def get_version_from_files([path | paths]) do
+ if File.exists?(path) do
+ path
+ |> File.read!()
+ |> String.replace(~r/\r|\n|\s/, "")
+ else
+ get_version_from_files(paths)
+ end
+ end
+end