home-manager/modules/programs/lf.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.programs.lf;
knownSettings = {
anchorfind = types.bool;
color256 = types.bool;
dircounts = types.bool;
dirfirst = types.bool;
drawbox = types.bool;
globsearch = types.bool;
icons = types.bool;
hidden = types.bool;
ignorecase = types.bool;
ignoredia = types.bool;
incsearch = types.bool;
preview = types.bool;
reverse = types.bool;
smartcase = types.bool;
smartdia = types.bool;
wrapscan = types.bool;
wrapscroll = types.bool;
number = types.bool;
relativenumber = types.bool;
findlen = types.int;
period = types.int;
scrolloff = types.int;
tabstop = types.int;
errorfmt = types.str;
filesep = types.str;
ifs = types.str;
promptfmt = types.str;
shell = types.str;
sortby = types.str;
timefmt = types.str;
ratios = types.str;
info = types.str;
shellopts = types.str;
};
lfSettingsType = types.submodule {
options = let
opt = name: type:
mkOption {
type = types.nullOr type;
default = null;
visible = false;
};
in mapAttrs opt knownSettings;
};
in {
meta.maintainers = [ hm.maintainers.owm111 ];
options = {
programs.lf = {
enable = mkEnableOption "lf";
settings = mkOption {
type = lfSettingsType;
default = { };
example = {
tabstop = 4;
number = true;
ratios = "1:1:2";
};
description = ''
An attribute set of lf settings. The attribute names and corresponding
values must be among the following supported options.
<informaltable frame="none"><tgroup cols="1"><tbody>
${concatStringsSep "\n" (mapAttrsToList (n: v: ''
<row>
<entry><varname>${n}</varname></entry>
<entry>${v.description}</entry>
</row>
'') knownSettings)}
</tbody></tgroup></informaltable>
See the lf documentation for detailed descriptions of these options.
Note, use <varname>previewer</varname> to set lf's
<varname>previewer</varname> option, and
<varname>extraConfig</varname> for any other option not listed above.
All string options are quoted with double quotes.
'';
};
commands = mkOption {
type = with types; attrsOf (nullOr str);
default = { };
example = {
get-mime-type = ''%xdg-mime query filetype "$f"'';
open = "$$OPENER $f";
};
description = ''
Commands to declare. Commands set to null or an empty string are
deleted.
'';
};
keybindings = mkOption {
type = with types; attrsOf (nullOr str);
default = { };
example = {
gh = "cd ~";
D = "trash";
i = "$less $f";
U = "!du -sh";
gg = null;
};
description =
"Keys to bind. Keys set to null or an empty string are deleted.";
};
cmdKeybindings = mkOption {
type = with types; attrsOf (nullOr str);
default = { };
example = literalExpression ''{ "<c-g>" = "cmd-escape"; }'';
description = ''
Keys to bind to command line commands which can only be one of the
builtin commands. Keys set to null or an empty string are deleted.
'';
};
previewer.source = mkOption {
type = with types; nullOr path;
default = null;
example = literalExpression ''
pkgs.writeShellScript "pv.sh" '''
#!/bin/sh
case "$1" in
*.tar*) tar tf "$1";;
*.zip) unzip -l "$1";;
*.rar) unrar l "$1";;
*.7z) 7z l "$1";;
*.pdf) pdftotext "$1" -;;
*) highlight -O ansi "$1" || cat "$1";;
esac
'''
'';
description = ''
Script or executable to use to preview files. Sets lf's
<varname>previewer</varname> option.
'';
};
previewer.keybinding = mkOption {
type = with types; nullOr str;
default = null;
example = "i";
description = ''
Key to bind to the script at <varname>previewer.source</varname> and
pipe through less. Setting to null will not bind any key.
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
example = ''
$mkdir -p ~/.trash
'';
description = "Custom lfrc lines.";
};
};
};
config = mkIf cfg.enable {
home.packages = [ pkgs.lf ];
xdg.configFile."lf/lfrc".text = let
fmtSetting = k: v:
optionalString (v != null) "set ${
if isBool v then
"${optionalString (!v) "no"}${k}"
else
"${k} ${if isInt v then toString v else ''"${v}"''}"
}";
settingsStr = concatStringsSep "\n" (remove "" (mapAttrsToList fmtSetting
(builtins.intersectAttrs knownSettings cfg.settings)));
fmtCmdMap = before: k: v:
"${before} ${k}${optionalString (v != null && v != "") " ${v}"}";
fmtCmd = fmtCmdMap "cmd";
fmtMap = fmtCmdMap "map";
fmtCmap = fmtCmdMap "cmap";
commandsStr = concatStringsSep "\n" (mapAttrsToList fmtCmd cfg.commands);
keybindingsStr =
concatStringsSep "\n" (mapAttrsToList fmtMap cfg.keybindings);
cmdKeybindingsStr =
concatStringsSep "\n" (mapAttrsToList fmtCmap cfg.cmdKeybindings);
previewerStr = optionalString (cfg.previewer.source != null) ''
set previewer ${cfg.previewer.source}
${optionalString (cfg.previewer.keybinding != null) ''
map ${cfg.previewer.keybinding} ''$${cfg.previewer.source} "$f" | less -R
''}
'';
in ''
${settingsStr}
${commandsStr}
${keybindingsStr}
${cmdKeybindingsStr}
${previewerStr}
${cfg.extraConfig}
'';
};
}