From 74bf5b55833402b05072cd6ace6fa8a9fc7f2235 Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor@ccxvii.net>
Date: Mon, 30 Oct 2023 15:11:54 +0100
Subject: Only update changed covers.

---
 tools/gencovers.sh | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'tools')

diff --git a/tools/gencovers.sh b/tools/gencovers.sh
index 8d4eacd..5d4d244 100644
--- a/tools/gencovers.sh
+++ b/tools/gencovers.sh
@@ -4,6 +4,9 @@ do
 	B=$(echo $F | sed s/.jpg// | sed s/.png//)
 	D=$(dirname $F)
 
+	if [ $F -nt $D/thumbnail.jpg ]
+	then
+
 	PORTRAIT=$(convert $F -format '%[fx:w<h]' info:)
 	SQUARE=$(convert $F -format '%[fx:w=h]' info:)
 
@@ -38,4 +41,6 @@ do
 	convert -colorspace RGB -resize $SIZE_TH $F -colorspace sRGB $D/thumbnail.png
 	pngtopnm $D/thumbnail.png | cjpeg -progressive -optimize -sample 1x1 -quality 95 > $D/thumbnail.jpg
 	rm -f $D/thumbnail.png
+
+	fi
 done
-- 
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