114 lines
2.6 KiB
OCaml
114 lines
2.6 KiB
OCaml
open Core
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type t =
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{
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title: string;
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start_value: float;
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cur_value : float;
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end_value : float;
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bar_length : int;
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init_time : Time.t;
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dirty : bool;
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next : Time.t;
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}
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let init ?(bar_length=20) ?(start_value=0.) ?(end_value=1.) ~title =
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{ title ; start_value ; end_value ; bar_length ; cur_value=start_value ;
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init_time= Time.now () ; dirty = false ; next = Time.now () }
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let update ~cur_value bar =
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{ bar with cur_value ; dirty=true }
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let increment_end bar =
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{ bar with end_value=(bar.end_value +. 1.) ; dirty=false }
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let clear bar =
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Printf.eprintf " \r%!";
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None
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let increment_cur bar =
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{ bar with cur_value=(bar.cur_value +. 1.) ; dirty=true }
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let display_tty bar =
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let percent =
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100. *. (bar.cur_value -. bar.start_value) /.
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(bar.end_value -. bar.start_value)
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in
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let n_hashes =
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(Float.of_int bar.bar_length) *. percent /. 100.
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|> Float.to_int
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in
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let hashes =
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String.init bar.bar_length ~f:(fun i ->
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if (i < n_hashes) then '#'
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else ' '
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)
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in
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let now =
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Time.now ()
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in
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let running_time =
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Time.abs_diff now bar.init_time
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in
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let stop_time =
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let x =
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Time.Span.to_sec running_time
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in
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if (percent > 0.) then
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x *. 100. /. percent -. x
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|> Time.Span.of_sec
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else
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Time.Span.of_sec 0.
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in
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Printf.eprintf "%s : [%s] %4.1f%% | %10s, ~%10s left\r%!"
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bar.title
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hashes
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percent
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(Time.Span.to_string running_time)
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(stop_time |> Time.Span.to_string );
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{ bar with dirty = false ; next = Time.add now (Time.Span.of_sec 0.1) }
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let display_file bar =
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let percent =
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100. *. (bar.cur_value -. bar.start_value) /.
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(bar.end_value -. bar.start_value)
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in
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let running_time =
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Time.abs_diff (Time.now ()) bar.init_time
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in
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let stop_time =
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let x =
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Time.Span.to_sec running_time
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in
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if (percent > 0.) then
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x *. 100. /. percent -. x
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|> Time.Span.of_sec
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else
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Time.Span.of_sec 0.
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in
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Printf.eprintf "%5.2f %% in %20s, ~%20s left\n%!"
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percent
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(Time.Span.to_string running_time)
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(Time.Span.to_string stop_time);
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{ bar with dirty = false ; next = Time.add (Time.now ()) (Time.Span.of_sec 2.) }
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let display bar =
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if (not bar.dirty) then
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bar
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else if (Time.now () < bar.next) then
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bar
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else
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begin
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if (Unix.isatty Unix.stdout) then
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display_tty bar
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else
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display_file bar
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end
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