meta: Switch from ranger to joshuto

Joshuto is *significantly* faster than ranger and is written in Rust
instead of Python. Although both ranger and joshuto have not seen a new
release in a while, the future of joshuto seems more promising.

Joshuto is additionally faster than lf and, similar to lf, does not hang
when previewing images with kitty.

terminal/default.nix

@@ -7,7 +7,7 @@
     ./gpg
     ./ncmpcpp
     ./neovim
-    ./ranger
+    ./joshuto
   ];
 
   environment.systemPackages = with pkgs; [

terminal/fish-starship/default.nix

@@ -68,7 +68,7 @@
       e = "exit";
       k = "kitty @ set-colors -c -a ~/.cache/wal/kitty";
       l = "ls -l";
-      r = "ranger";
+      j = "joshuto";
       w = "wal -o ~/.config/wal/done.sh";
       T = "tree";
     };

terminal/joshuto/default.nix

@@ -0,0 +1,28 @@
+{ pkgs, ... }:
+
+{
+  environment.systemPackages = [
+    (pkgs.callPackage ./package {})
+  ];
+
+  home-manager.sharedModules = [{
+    xdg.configFile."joshuto/joshuto.toml".text = ''
+      [display]
+      automatically_count_files = true
+      show_borders = false
+      show_hidden = true
+      line_number_style = "absolute"
+      collapse_preview = false
+
+      [preview]
+      max_preview_size = 104857600
+      preview_script = "~/.config/joshuto/preview.sh"
+      preview_shown_hook_script = "~/.config/joshuto/kitty-show.sh"
+      preview_removed_hook_script = "~/.config/joshuto/kitty-remove.sh"
+    '';
+
+    xdg.configFile."joshuto/preview.sh".source = ./preview.sh;
+    xdg.configFile."joshuto/kitty-show.sh".source = ./kitty-show.sh;
+    xdg.configFile."joshuto/kitty-remove.sh".source = ./kitty-remove.sh;
+  }];
+}

terminal/joshuto/kitty-remove.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+kitty +kitten icat \
+	--transfer-mode=file \
+	--clear 2>/dev/null

terminal/joshuto/kitty-show.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+FILE_PATH="$1"			# Full path of the previewed file
+PREVIEW_X_COORD="$2"		# x coordinate of upper left cell of preview area
+PREVIEW_Y_COORD="$3"		# y coordinate of upper left cell of preview area
+PREVIEW_WIDTH="$4"		# Width of the preview pane (number of fitting characters)
+PREVIEW_HEIGHT="$5"		# Height of the preview pane (number of fitting characters)
+
+TMP_FILE="$HOME/.cache/joshuto/thumbcache.png"
+
+mimetype=$(file --mime-type -Lb "$FILE_PATH")
+
+function image {
+	kitty +kitten icat \
+		--transfer-mode=file \
+		--clear 2>/dev/null
+	kitty +kitten icat \
+		--transfer-mode=file \
+		--place "${PREVIEW_WIDTH}x${PREVIEW_HEIGHT}@${PREVIEW_X_COORD}x${PREVIEW_Y_COORD}" \
+		"$1" 2>/dev/null
+}
+
+case "$mimetype" in
+	image/*)
+		image "${FILE_PATH}"
+		;;
+	*)
+		kitty +kitten icat \
+			--transfer-mode=file \
+			--clear 2>/dev/null
+		;;
+esac

terminal/joshuto/package/default.nix

@@ -0,0 +1,22 @@
+{ lib, rustPlatform, fetchFromGitHub }:
+
+rustPlatform.buildRustPackage rec {
+  pname = "joshuto";
+  version = "493af3185092036cbbae81ae620b101f66cf4e9a";
+
+  src = fetchFromGitHub {
+    owner = "kamiyaa";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-jLlDMV03eFWDB1D6pFEq2MFAfoVwFTy8ZpweS9syDB0=";
+  };
+
+  cargoSha256 = "sha256-dffKMgXhm4VpDSEzFW5d4oGCBKY/ppj1gx29Iw3Msc8=";
+
+  meta = with lib; {
+    description = "Ranger-like terminal file manager written in Rust";
+    homepage = "https://github.com/kamiyaa/joshuto";
+    license = licenses.lgpl3Only;
+    maintainers = with maintainers; [ figsoda totoroot ];
+  };
+}

terminal/joshuto/preview.sh

@@ -0,0 +1,89 @@
+#!/usr/bin/env bash
+
+IFS=$'\n'
+set -o noclobber -o noglob -o nounset -o pipefail
+
+FILE_PATH=""
+PREVIEW_WIDTH=10
+PREVIEW_HEIGHT=10
+
+while [ "$#" -gt 0 ]; do
+	case "$1" in
+		"--path")
+			shift
+			FILE_PATH="$1"
+			;;
+		"--preview-width")
+			shift
+			PREVIEW_WIDTH="$1"
+			;;
+		"--preview-height")
+			shift
+			PREVIEW_HEIGHT="$1"
+			;;
+	esac
+	shift
+done
+
+realpath=$(realpath "$FILE_PATH")
+
+handle_extension() {
+    case "${FILE_EXTENSION_LOWER}" in
+        rar)
+            unrar lt -p- -- "${FILE_PATH}" && exit 0
+            exit 1;;
+        7z)
+            7z l -p -- "${FILE_PATH}" && exit 0
+            exit 1;;
+
+        pdf)
+            pdftotext -l 10 -nopgbrk -q -- "${FILE_PATH}" - | \
+                fmt -w "${PREVIEW_WIDTH}" && exit 0
+            mutool draw -F txt -i -- "${FILE_PATH}" 1-10 | \
+                fmt -w "${PREVIEW_WIDTH}" && exit 0
+            exiftool "${FILE_PATH}" && exit 0
+            exit 1;;
+
+        torrent)
+            transmission-show -- "${FILE_PATH}" && exit 0
+            exit 1;;
+
+        json)
+            jq --color-output . "${FILE_PATH}" && exit 0
+            ;;
+    esac
+}
+
+handle_mime() {
+	local mimetype="${1}"
+
+	case "${mimetype}" in
+        ## Text
+        text/* | */xml)
+            bat --color=always --paging=never \
+		--style=plain \
+		--terminal-width="${PREVIEW_WIDTH}" \
+		 "${FILE_PATH}" && exit 0
+            cat "${FILE_PATH}" && exit 0
+            exit 1;;
+
+        ## Image
+        image/*)
+            exit 5;;
+
+        ## Video and audio
+        video/* | audio/*)
+            echo "$realpath"
+            mediainfo "${FILE_PATH}" && exit 0
+            exiftool "${FILE_PATH}" && exit 0
+            exit 1;;
+    esac
+}
+
+FILE_EXTENSION="${FILE_PATH##*.}"
+FILE_EXTENSION_LOWER="$(printf "%s" "${FILE_EXTENSION}" | tr '[:upper:]' '[:lower:]')"
+handle_extension
+MIMETYPE="$( file --dereference --brief --mime-type -- "${FILE_PATH}" )"
+handle_mime "${MIMETYPE}"
+
+exit 1

terminal/ranger/default.nix

@@ -1,28 +0,0 @@
-{ pkgs, ... }:
-
-{
-  environment.systemPackages = [ pkgs.ranger ];
-
-  home-manager.sharedModules = [{
-    xdg.configFile."ranger/rc.conf".text = ''
-      set line_numbers absolute
-      set padding_right false
-      set vcs_aware true
-      set show_hidden true
-      set confirm_on_delete always
-      set save_console_history false
-      set mouse_enabled false
-      set tilde_in_titlebar true
-
-      alias r rename
-      alias d delete
-
-      map DD shell trash %s
-
-      set use_preview_script true
-      set preview_files true
-      set preview_images true
-      set preview_images_method kitty
-    '';
-  }];
-}