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Refactor pretty-printing library to support styles
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@ -23,7 +23,7 @@
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(cmdliner (>= "1.2.0"))
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(ezcurl (>= "0.2.4"))
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(minttea (>= "0.0.2"))
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uuseg.string
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uuseg
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)
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(tags
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(tui cli git github)))
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@ -15,7 +15,7 @@ depends: [
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"cmdliner" {>= "1.2.0"}
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"ezcurl" {>= "0.2.4"}
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"minttea" {>= "0.0.2"}
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"uuseg.string"
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"uuseg"
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"odoc" {with-doc}
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]
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build: [
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@ -1,11 +1,16 @@
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(* A simple pretty printing combinator library *)
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type styles = ANSITerminal.style list
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type doc =
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| Empty
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| Str of string
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| Str of styles * string
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| Vertical of doc * doc
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| Horizontal of doc * doc
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let str string = Str ([], string)
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let fmt styles string = Str (styles, string)
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let row = function
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| [] -> Empty
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| hd :: tl -> List.fold_left (fun l r -> Horizontal (l, r)) hd tl
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@ -14,25 +19,71 @@ let col = function
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| [] -> Empty
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| hd :: tl -> List.fold_left (fun l r -> Vertical (l, r)) hd tl
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let zip_lines l r =
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let max_len_l = List.map String_extra.graphemes_len l |> List.fold_left max 0 in
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let padding = String.make max_len_l ' ' in
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type chunk =
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{
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styles: styles;
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string: string;
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}
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let fmt_chunk {styles; string} =
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ANSITerminal.sprintf styles "%s" string
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let mk_padding_chunk n =
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let padding = String.make n ' ' in
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{styles = []; string = padding}
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type line =
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{
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chunks: chunk list
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}
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let fmt_line line =
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line.chunks
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|> List.map fmt_chunk
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|> String.concat ""
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let line_len line =
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List.fold_left
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(fun acc {string; _} -> acc + String_extra.graphemes_len string)
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0
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line.chunks
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let zip_lines (l: line list) (r: line list) =
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let max_len_l = List.map line_len l |> List.fold_left max 0 in
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let rec zip l r =
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match (l, r) with
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| (l, []) ->
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l
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| ([], r) ->
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List.map (fun s -> padding ^ s) r
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(* Optimisation: Add extra chunk only if padding is needed *)
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if max_len_l > 0 then
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let padding_chunk = mk_padding_chunk max_len_l in
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List.map (fun line -> { chunks = padding_chunk :: line.chunks }) r
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else
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r
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| (hd_l :: tl_l, hd_r :: tl_r) ->
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(String_extra.fill_right max_len_l hd_l ^ hd_r) :: zip tl_l tl_r
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let left_len = line_len hd_l in
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(* Optimisation: Combine chunks when left is already max len *)
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if left_len >= max_len_l then
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let new_line = { chunks = hd_l.chunks @ hd_r.chunks } in
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new_line :: zip tl_l tl_r
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else
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let padding_chunk = mk_padding_chunk (max_len_l - left_len) in
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let new_line = { chunks = hd_l.chunks @ [padding_chunk] @ hd_r.chunks } in
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new_line :: zip tl_l tl_r
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in
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zip l r
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let rec render_to_lines = function
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| Empty ->
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[]
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| Str s ->
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[s]
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| Str (styles, string) ->
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[{ chunks = [{styles; string}] }]
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| Vertical (top, bottom) ->
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render_to_lines top @ render_to_lines bottom
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| Horizontal (left, right) ->
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@ -41,4 +92,5 @@ let rec render_to_lines = function
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let render doc =
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doc
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|> render_to_lines
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|> List.map fmt_line
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|> String_extra.unlines
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@ -1,24 +1,21 @@
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let fmt (styles : ANSITerminal.style list) : string -> string =
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ANSITerminal.sprintf styles "%s"
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let style_repo =
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ANSITerminal.([Bold; blue])
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let fmt_repo =
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fmt ANSITerminal.([Bold; blue])
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let fmt_selected =
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fmt ANSITerminal.([Bold; green])
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let style_selected =
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ANSITerminal.([Bold; green])
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let tabs_section cur_tab =
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let open Pretty in
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let p_tab tab txt =
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if cur_tab = tab
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then Str (fmt_selected txt)
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else Str txt
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then fmt style_selected txt
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else str txt
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in
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let sep = col
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[
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Str " ";
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Str " ";
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Str "─";
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str " ";
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str " ";
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str "─";
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]
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in
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render @@ row
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@ -61,7 +58,7 @@ let file_widget ~max_name_len ~selected files =
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|> (fun lines -> [top] @ lines @ [bot])
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|> List.mapi (fun i s ->
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if i = hi_pos - 1 || i = hi_pos || i = hi_pos + 1
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then fmt_selected s
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then ANSITerminal.sprintf style_selected "%s" s
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else s
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)
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|> String_extra.unlines
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@ -81,7 +78,7 @@ let tab_content_section (model: Model.t) =
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| Issues | PullRequests -> ""
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let view (model: Model.t) =
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let repo = fmt_repo model.repo in
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let repo = ANSITerminal.sprintf style_repo "%s" model.repo in
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let tabs = tabs_section model.current_tab in
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let content = tab_content_section model in
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Format.sprintf
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