lf stuff

fish/.config/fish/config.fish

@@ -14,6 +14,10 @@ function q
     exit
 end
 
+function lf
+    command lfub
+end
+
 function cl 
     command clear && ls
 end

lf/.config/lf/cleaner

@@ -0,0 +1,4 @@
+#!/bin/sh
+if [ -n "$FIFO_UEBERZUG" ]; then
+	printf '{"action": "remove", "identifier": "PREVIEW"}\n' > "$FIFO_UEBERZUG"
+fi

lf/.config/lf/lfrc

@@ -1,6 +1,9 @@
 # Basic Settings
 set preview
 set icons
+set cleaner '~/.config/lf/cleaner'
+set previewer '~/.config/lf/scope'
+set cursorpreviewfmt "\033[7m"
 
 # Commands
 cmd edit-config ${{
@@ -52,10 +55,16 @@ cmd bulkrename ${{
     lf -remote "send $id unselect"
 }}
 
+cmd move-parent &{{
+    dironly="setlocal '$(dirname "$PWD")' dironly"
+    lf -remote "send $id :updir; $dironly true; $1; $dironly false; open"
+}}
+
+
 # Mappings and stuff
 map C edit-config
-map J :updir; down; open
-map K :updir; up; open
+map J move-parent down
+map K move-parent up
 map o open;
 map <c-s> set hidden!
 map B bulkrename

lf/.config/lf/scope

@@ -0,0 +1,61 @@
+#!/bin/sh
+
+# File preview handler for lf.
+
+set -C -f
+IFS="$(printf '%b_' '\n')"; IFS="${IFS%_}"
+
+image() {
+	if [ -f "$1" ] && [ -n "$DISPLAY" ] && [ -z "$WAYLAND_DISPLAY" ] && command -V ueberzug >/dev/null 2>&1; then
+		printf '{"action": "add", "identifier": "PREVIEW", "x": "%s", "y": "%s", "width": "%s", "height": "%s", "scaler": "contain", "path": "%s"}\n' "$4" "$5" "$(($2-1))" "$(($3-1))" "$1" > "$FIFO_UEBERZUG"
+	else
+		mediainfo "$6"
+	fi
+}
+
+# Note that the cache file name is a function of file information, meaning if
+# an image appears in multiple places across the machine, it will not have to
+# be regenerated once seen.
+
+case "$(file --dereference --brief --mime-type -- "$1")" in
+	image/avif) CACHE="${XDG_CACHE_HOME:-$HOME/.cache}/lf/thumb.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$1")" | sha256sum | cut -d' ' -f1)"
+		[ ! -f "$CACHE" ] && convert "$1" "$CACHE.jpg"
+		image "$CACHE.jpg" "$2" "$3" "$4" "$5" "$1" ;;
+	image/vnd.djvu)
+		CACHE="${XDG_CACHE_HOME:-$HOME/.cache}/lf/thumb.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$1")" | sha256sum | cut -d' ' -f1)"
+		[ ! -f "$CACHE" ] && djvused "$1" -e 'select 1; save-page-with /dev/stdout' | convert -density 200 - "$CACHE.jpg" > /dev/null 2>&1
+		image "$CACHE.jpg" "$2" "$3" "$4" "$5" "$1" ;;
+    image/svg+xml)
+	    CACHE="${XDG_CACHE_HOME:-$HOME/.cache}/lf/thumb.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$1")" | sha256sum | cut -d' ' -f1)"
+	    [ ! -f "$CACHE" ] && inkscape --convert-dpi-method=none -o "$CACHE.png" --export-overwrite -D --export-png-color-mode=RGBA_16 "$1"
+	    image "$CACHE.png" "$2" "$3" "$4" "$5" "$1" ;;
+	image/*) 
+        image "$1" "$2" "$3" "$4" "$5" "$1" ;;
+	text/html) 
+        lynx -width="$4" -display_charset=utf-8 -dump "$1" ;;
+	text/troff) 
+        man ./ "$1" | col -b ;;
+	text/* | */xml | application/json | application/x-ndjson) 
+        bat -p --theme nord --terminal-width "$(($4-2))" -f "$1" ;;
+	audio/* | application/octet-stream) 
+        mediainfo "$1" || exit 1 ;;
+	video/* )
+		CACHE="${XDG_CACHE_HOME:-$HOME/.cache}/lf/thumb.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$1")" | sha256sum | cut -d' ' -f1)"
+		[ ! -f "$CACHE" ] && ffmpegthumbnailer -i "$1" -o "$CACHE" -s 0
+		image "$CACHE" "$2" "$3" "$4" "$5" "$1"
+		;;
+	*/pdf)
+		CACHE="${XDG_CACHE_HOME:-$HOME/.cache}/lf/thumb.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$1")" | sha256sum | cut -d' ' -f1)"
+		[ ! -f "$CACHE.jpg" ] && pdftoppm -jpeg -f 1 -singlefile "$1" "$CACHE"
+		image "$CACHE.jpg" "$2" "$3" "$4" "$5" "$1"
+		;;
+	*/epub+zip|*/mobi*)
+		CACHE="${XDG_CACHE_HOME:-$HOME/.cache}/lf/thumb.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$1")" | sha256sum | cut -d' ' -f1)"
+		[ ! -f "$CACHE.jpg" ] && gnome-epub-thumbnailer "$1" "$CACHE.jpg"
+		image "$CACHE.jpg" "$2" "$3" "$4" "$5" "$1"
+		;;
+	application/*zip) atool --list -- "$1" ;;
+	*opendocument*) odt2txt "$1" ;;
+	application/pgp-encrypted) gpg -d -- "$1" ;;
+esac
+exit 1

localbin/.local/bin/lfub

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+# This is a wrapper script for lf that allows it to create image previews with
+# ueberzug. This works in concert with the lf configuration file and the
+# lf-cleaner script.
+
+set -e
+
+cleanup() {
+    exec 3>&-
+	rm "$FIFO_UEBERZUG"
+}
+
+if [ -n "$SSH_CLIENT" ] || [ -n "$SSH_TTY" ]; then
+	lf "$@"
+else
+	[ ! -d "$HOME/.cache/lf" ] && mkdir -p "$HOME/.cache/lf"
+	export FIFO_UEBERZUG="$HOME/.cache/lf/ueberzug-$$"
+	mkfifo "$FIFO_UEBERZUG"
+	ueberzug layer -s <"$FIFO_UEBERZUG" -p json &
+	exec 3>"$FIFO_UEBERZUG"
+	trap cleanup HUP INT QUIT TERM PWR EXIT
+	lf "$@" 3>&-
+fi