From a2cd32dfe7f8c4fa0051ae5823552ac5c4cf4cf6 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Paul=20H=C3=A4nsch?= <paul@plutz.net>
Date: Wed, 17 Nov 2021 02:49:59 +0100
Subject: [PATCH] quicker update function

---
 db_meta.sh | 33 ++++++++++++++++++---------------
 1 file changed, 18 insertions(+), 15 deletions(-)

diff --git a/db_meta.sh b/db_meta.sh
index 5b375f7..f1eec4d 100755
--- a/db_meta.sh
+++ b/db_meta.sh
@@ -65,21 +65,24 @@ update_meta(){
   esac; done
 
   if LOCK "$meta_db"; then
-    while read -r LENGTH WIDTH HEIGHT TAGS COMMENT NAME; do
-      if [ "$name" = "${NAME%${CR}}" ]; then
-        printf '%i	%i	%i	tags=%s	comment=%s	%s\r\n' \
-               "${length:-${length-${LENGTH}}${length+0}}" \
-               "${width:-${width-${WIDTH}}${width+0}}" \
-               "${height:-${height-${HEIGHT}}${height+0}}" \
-               "$(STRING "${tags-$(UNSTRING "${TAGS#tags=}")}")" \
-               "$(STRING "${comment-$(UNSTRING "${COMMENT#comment=}")}")" \
-               "$(STRING "${name-$(UNSTRING "${NAME%${CR}}")}")"
-      else
-        printf '%i	%i	%i	tags=%s	comment=%s	%s\r\n' \
-               "$LENGTH" "$WIDTH" "$HEIGHT" "${TAGS#tags=}" \
-               "${COMMENT#comment=}" "${NAME%${CR}}"
-      fi
-    done <"$meta_db" >"${meta_db}.$$"
+    read -r LENGTH WIDTH HEIGHT TAGS COMMENT NAME <<-EOF
+	$(grep -F "	${name}${CR}" "$meta_db")
+	EOF
+    if [ ! "$NAME" ]; then
+      RELEASE "$meta_db"
+      return 1
+    fi
+    printf '%i	%i	%i	tags=%s	comment=%s	%s\r\n' \
+           "${length:-${length-${LENGTH}}${length+0}}" \
+           "${width:-${width-${WIDTH}}${width+0}}" \
+           "${height:-${height-${HEIGHT}}${height+0}}" \
+           "$(STRING "${tags-$(UNSTRING "${TAGS#tags=}")}")" \
+           "$(STRING "${comment-$(UNSTRING "${COMMENT#comment=}")}")" \
+           "${NAME%${CR}}" \
+    >"${meta_db}.$$"
+
+    grep -vF "	${name}${CR}" "$meta_db" >>"${meta_db}.$$"
+
     mv -- "${meta_db}.$$" "${meta_db}"
     RELEASE "$meta_db"
   else
-- 
2.39.2