Source file time_convert.ml

(* These functions are adapted from ptime.ml. Original copyright follows. *)

(*---------------------------------------------------------------------------
  Copyright (c) 2015 The ptime programmers Permission to use, copy, modify,
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let rfc3339_adjust_tz_offset tz_offset_s =
  (* The RFC 3339 time zone offset field is limited in expression to the bounds
     below with minute precision. If the requested time zone offset exceeds
     these bounds or is not an *integral* number of minutes we simply use UTC.
     An alternative would be to compensate the offset *and* the timestamp but
     it's more complicated to explain and maybe more surprising to the user. *)
  let min = -86340 (* -23h59 in secs *) in
  let max = 86340 (* +23h59 in secs *) in
  if min <= tz_offset_s && tz_offset_s <= max && tz_offset_s mod 60 = 0 then
    (tz_offset_s, false)
  else (0 (* UTC *), true)

let to_string_hum tz_offset_s ptime =
  let tz_offset_s, _tz_unknown =
    match tz_offset_s with
    | Some tz ->
        rfc3339_adjust_tz_offset tz
    | None ->
        (0, true)
  in
  let (y, m, d), ((hh, ss, mm), _tz_offset_s) =
    Ptime.to_date_time ~tz_offset_s ptime
  in
  Printf.sprintf "%04d-%02d-%02d %02d:%02d:%02d" y m d hh ss mm