From d8a8970715070f73bcb6333e3fe851b6802ac702 Mon Sep 17 00:00:00 2001
From: poeplva <132710624+poeplva@users.noreply.github.com>
Date: Mon, 24 Jul 2023 02:06:04 +0300
Subject: [PATCH] djvu files cannot be previewed (#1335)

added support for previewing books in djvu format.
---
 .config/lf/scope | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.config/lf/scope b/.config/lf/scope
index 12c1792..cc55669 100755
--- a/.config/lf/scope
+++ b/.config/lf/scope
@@ -25,6 +25,10 @@ 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/*) image "$1" "$2" "$3" "$4" "$5" "$1" ;;
 	text/html) lynx -width="$4" -display_charset=utf-8 -dump "$1" ;;
 	text/troff) man ./ "$1" | col -b ;;