add common.ex

lib/mix/tasks/pleroma/common.ex

+defmodule Mix.Tasks.Pleroma.Common do
+  @shortdoc "Common functions to be reused in mix tasks"
+  def start_pleroma do
+    Mix.Task.run("app.start")
+  end
+
+  def get_option(options, opt, prompt, def \\ nil, defname \\ nil) do
+    Keyword.get(options, opt) ||
+      case Mix.shell().prompt("#{prompt} [#{defname || def}]") do
+        "\n" ->
+          case def do
+            nil -> get_option(options, opt, prompt, def)
+            def -> def
+          end
+
+        opt ->
+          opt |> String.trim()
+      end
+  end
+
+  def escape_sh_path(path) do
+    ~S(') <> String.replace(path, ~S('), ~S(\')) <> ~S(')
+  end
+end