From ba3f605f5f025c199ed81de9747dbc6786c02c8d Mon Sep 17 00:00:00 2001
From: Ralph Ronnquist <rrq@rrq.au>
Date: Mon, 9 Oct 2023 16:29:22 +1100
Subject: [PATCH] Add --exclude patterns for configured subtree backups.

---
 duplicity-daily | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/duplicity-daily b/duplicity-daily
index ce659ce..2232092 100755
--- a/duplicity-daily
+++ b/duplicity-daily
@@ -20,6 +20,17 @@ TARGET="$(grep ^TARGET= -m1 $CONFIG | sed 's/^TARGET=//')"
 # /opt/other/x=user@host/backup/x
 
 SRCS=( $(grep ^/ $CONFIG) )
+
+# add --exlude option for any path of $SRCS that extends $1
+excludes() {
+    local SRC X
+    for SRC in "${SRCS[@]}" ; do
+	SRC=${SRC%%=*}
+	[ "$SRC" = "$1" ] && continue
+	[ -z "${SRC%$1*}" ] && echo -n " --exclude $SRC"
+    done
+}
+
 for SRC in "${SRCS[@]}" ; do
     if [ "${SRC#*=}" = "$SRC" ] ; then
 	DST=$TARGET$SRC
@@ -28,5 +39,6 @@ for SRC in "${SRCS[@]}" ; do
 	SRC="${SRC%%=*}"
     fi
     echo "** Backing up $SRC to $DST" 
-    dupltool ${OPTIONS[*]} $SRC pexpect+scp://$DST
+    echo dupltool $(excludes "$SRC") ${OPTIONS[*]} $SRC pexpect+scp://$DST
+    dupltool $(excludes "$SRC") ${OPTIONS[*]} $SRC pexpect+scp://$DST
 done |& logger -t backup
-- 
2.39.2