gleam_erlexec

A wrapper around the functions found in erlexec.

It probably goes without saying, but this functionality is only available when runnning on BEAM.

Quick start

import gleam/erlexec as exec

pub fn main() {
  assert Ok(bash) = exec.find_executable("bash")

  assert Ok(exec.Pids(_pid, ospid)) =
    exec.new()
    |> exec.with_stdin(exec.StdinPipe)
    |> exec.with_stdout(exec.StdoutCapture)
    |> exec.with_stderr(exec.StderrStdout)
    |> exec.with_monitor(True)
    |> exec.with_pty(True)
    |> exec.run_async(exec.Execve([bash, "-c", "echo started && cat"]))

  assert Ok(exec.ObtainStdout(_, "started\r\n")) = exec.obtain(500)
  assert Ok(Nil) = exec.send(ospid, "test\n")
  assert Ok(exec.ObtainStdout(_, "test\r\n")) = exec.obtain(500)
  assert Ok(Nil) = exec.kill_ospid(ospid, 9)
}

Installation

This package can be added to your Gleam project:

gleam add gleam_erlexec

Development

gleam test  # Run the tests
gleam run   # Run a small example
gleam shell # Run an Erlang shell

TODO

The test suite is still fairly incomplete, but without code coverage it is a bit hard to ensure all cases are covered and the main functionality is tested in erlexec itself.

Happy for any PRs though.