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ex_debug_toolbar

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A debug web toolbar for Phoenix projects to display all sorts of information about request

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ex_debug_toolbar lib ex_debug_toolbar breakpoint iex shell.ex
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lib/ex_debug_toolbar/breakpoint/iex/shell.ex 

defmodule ExDebugToolbar.Breakpoint.IEx.Shell do

  @moduledoc false



  @default_cmd """

    stty echo

    clear

    iex --sname %{node_name} -S mix breakpoint.client %{breakpoint_id}

  """



  def start(breakpoint_id) do

    with {:ok, pid, _os_pid} <- start_shell_process(),

         :ok <- start_iex_process(pid, breakpoint_id),

      do: {:ok, pid}

    else error -> error

  end



  def stop(pid), do: :exec.stop(pid)



  def send_input(pid, input), do: :exec.send(pid, input)



  defp start_shell_process do

    :exec.run('$SHELL', [:stdin, :stdout, :stderr, :pty])

  end



  defp start_iex_process(pid, breakpoint_id) do

    :ex_debug_toolbar

    |> Application.get_env(:iex_shell_cmd, @default_cmd)

    |> String.replace("%{node_name}", node_name())

    |> String.replace("%{breakpoint_id}", breakpoint_id)

    |> (&:exec.send(pid, &1)).()

  end



  defp node_name() do

    self()

    |> inspect

    |> String.trim("#PID<")

    |> String.trim(">")

    |> String.replace(".", "-")

  end

end