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|
module Grep = Grep
module Common = Common
open Notty
module Input_screen = Input_screen
module Help_screen = Help_screen
type state =
{ pos : int * int
; scroll : int
; content : (string * int * string * int) array
; go_back : unit -> unit
; content_pretty : Grep.display_type array
}
let render_line size_x y scroll (el : Grep.display_type) i =
match el with
| Bold el ->
if i == y - scroll
then (
let fill = String.make (max (size_x - String.length el) 0) ' ' in
I.strf "%s%s" ~attr:A.(st bold ++ st reverse) el fill |> I.pad ~l:0 ~t:i)
else I.strf "%s" ~attr:A.(st bold) el |> I.pad ~l:0 ~t:i
| Normal el ->
if i == y - scroll
then (
let fill = String.make (max (size_x - String.length el) 0) ' ' in
I.strf "%s%s" ~attr:A.(st reverse) el fill |> I.pad ~l:0 ~t:i)
else I.strf "%s" el |> I.pad ~l:0 ~t:i
(* TODO: Use grep -l to filter notes by regexp and rerender those files*)
let rec render t ({ pos; scroll; content_pretty; go_back; content } as state) =
let size_x, size_y = Common.Term.size t in
let x, y = pos in
let img =
let elements =
Array.mapi
(fun i el -> render_line size_x y scroll el i)
(* TODO: Fix this ugly slow conversion *)
(Array.to_seq content_pretty |> Seq.drop scroll |> Array.of_seq)
in
let open I in
Array.fold_left (fun sum el -> el </> sum) I.empty elements
in
Common.Term.image t img;
let content_length = Array.length content_pretty in
let scroll_up () =
let scroll = if y - scroll = 0 then max (scroll - 1) 0 else scroll in
render t @@ { state with pos = x, max (y - 1) 0; scroll }
in
let scroll_down () =
let scroll = if y - scroll >= size_y - 1 then scroll + 1 else scroll in
render t @@ { state with pos = x, min (y + 1) (content_length - 1); scroll }
in
match Common.Term.event t with
| `End | `Key (`Escape, []) | `Key (`ASCII 'q', []) | `Key (`ASCII 'C', [ `Ctrl ]) -> ()
| `Mouse (`Press (`Scroll s), _, _) ->
(match s with
| `Down -> scroll_down ()
| `Up -> scroll_up ())
| `Resize _ -> render t state
| `Key (`ASCII 's', []) -> go_back ()
| `Mouse ((`Press _ | `Drag), (_, y), _) ->
render t { state with pos = 0, min y content_length }
| `Key (`ASCII 'j', []) | `Key (`ASCII 'N', [ `Ctrl ]) -> scroll_down ()
| `Key (`ASCII 'k', []) | `Key (`ASCII 'P', [ `Ctrl ]) -> scroll_up ()
| `Key (`ASCII '?', []) -> Help_screen.render t { go_back = (fun () -> render t state) }
| `Key (`ASCII 'e', []) | `Key (`Enter, []) ->
(* Editor might be set with extra args, in that case we need to separate these *)
let[@warning "-8"] (editor :: args) =
String.split_on_char ' ' (Sys.getenv "EDITOR")
in
let selected_file, line_number, _, file_number_offset = Array.get content y in
let full_path_file = Grep.execution_directory ^ "/" ^ selected_file in
(* Because each file title consists of two lines, we need to account for the offset
it adds by removing the file_number *)
let line_number_arg = "+" ^ Int.to_string (line_number - file_number_offset) in
let full_args =
Array.append (Array.of_list args) [| line_number_arg; full_path_file |]
in
Common.Term.cursor t (Some (0, 0));
let _ =
Unix.create_process_env
editor
full_args
(Unix.environment ())
Unix.stdin
Unix.stdout
Unix.stderr
in
let rec run_editor () =
match Unix.wait () with
| _, _ ->
Common.Term.cursor t None;
render t state
(* Capture resizing events *)
| exception Unix.Unix_error (Unix.EINTR, _, _) -> run_editor ()
| exception Unix.Unix_error (_, _, _) -> failwith "ERROR"
in
run_editor ()
| `Key (`Arrow d, _) ->
(match d with
| `Up -> scroll_up ()
| `Down -> scroll_down ()
| _ -> render t state)
| _ -> render t state
|