1 files changed, 49 insertions, 0 deletions
diff --git a/lf/scope b/lf/scope
new file mode 100755
index 0000000..4058543
--- /dev/null
+++ b/lf/scope
@@ -0,0 +1,49 @@
+#!/bin/sh
+
+# File preview handler for lf.
+
+set -C -f
+IFS="$(printf '%b_' '\n')"; IFS="${IFS%_}"
+
+image() {
+	if [ -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 "$1"
+	fi
+}
+
+gencacheimage() {
+	CACHE="${XDG_CACHE_HOME:-$HOME/.cache}/lf/thumb.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$1")" | xxhsum | cut -d' ' -f1)$2"
+}
+
+ifub() {
+	[ -n "$DISPLAY" ] && [ -z "$WAYLAND_DISPLAY" ] && command -V ueberzug >/dev/null 2>&1
+}
+
+# Note that the cache file name is a function of file information, meaning if
+# an image appears in multiple places across the machine, it will not have to
+# be regenerated once seen.
+
+case "$(file --dereference --brief --mime-type -- "$1")" in
+	image/*) image "$1" "$2" "$3" "$4" "$5" ;;
+	text/html) lynx -width="$4" -display_charset=utf-8 -dump "$1"  ;;
+	text/troff) man ./ "$1" | col -b ;;
+	text/* | */xml) bat --theme=Monokai\ Extended --terminal-width "$4" -f "$1" ;;
+	application/zip | application/gzip) atool --list -- "$1" ;;
+        audio/* | application/octet-stream) mediainfo "$1" || exit 1;;
+	video/* )
+		gencacheimage "$1" ".jpg"
+		[ ! -f "$CACHE" ] && ffmpegthumbnailer -i "file:$1" -o "$CACHE" -s 0
+		image "$CACHE" "$2" "$3" "$4" "$5"
+		;;
+        */pdf)
+		gencacheimage "$1"
+		[ ! -f "$CACHE.jpg" ] && pdftoppm -jpeg -f 1 -singlefile "$1" "$CACHE"
+		image "$CACHE.jpg" "$2" "$3" "$4" "$5"
+		;;
+        *opendocument*) odt2txt "$1" ;;
+	application/pgp-encrypted) gpg -d -- "$1" ;;
+	*) mediainfo "$1" || exit 1;;
+esac
+exit 1