This repository has been archived by the owner on May 8, 2024. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 7
/
Copy pathconsole_solo5.ml
72 lines (59 loc) · 1.95 KB
/
console_solo5.ml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
(*
* Copyright (c) 2010-2013 Anil Madhavapeddy <anil@recoil.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*)
open Lwt.Infix
open Result
external solo5_console_write: string -> unit = "stub_console_write"
(* TODO everything connects to the same console for now *)
(* TODO management service for logging *)
type t = {
id: string;
read_buffer: Cstruct.t;
mutable closed: bool;
}
type 'a io = 'a Lwt.t
type buffer = Cstruct.t
type error
let pp_error _ (_:error) = assert false
type write_error = Mirage_flow.write_error
let pp_write_error = Mirage_flow.pp_write_error
let connect id =
let read_buffer = Cstruct.create 0 in
let closed = false in
let t = { id; read_buffer; closed } in
Lwt.return t
let disconnect _t = Lwt.return_unit
let read _t = Lwt.return @@ Ok `Eof
let write_one buf =
solo5_console_write (Cstruct.to_string buf);
Lwt.return_unit
let write t buf =
if t.closed then
Lwt.return @@ Error `Closed
else
write_one buf >>= fun () -> Lwt.return @@ Ok ()
let writev t bufs =
if t.closed then
Lwt.return @@ Error `Closed
else
Lwt_list.iter_s write_one bufs >>= fun () -> Lwt.return @@ Ok ()
let close t =
t.closed <- true;
Lwt.return ()
let log t s =
if t.closed then
Lwt.return_unit
else
write_one (Cstruct.of_string (s ^ "\n"))