From 8dea72e22b38432e8a2522fc54894e33c3d2effc Mon Sep 17 00:00:00 2001
From: Gerhard Hoffmann <g.hoffmann@atb-online.eu>
Date: Tue, 25 Apr 2023 11:54:03 +0200
Subject: [PATCH] Update as for branch zg1/zone1

---
 .githooks/post-merge | 26 +++++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

diff --git a/.githooks/post-merge b/.githooks/post-merge
index a564abf..8793b5d 100755
--- a/.githooks/post-merge
+++ b/.githooks/post-merge
@@ -11,15 +11,35 @@ if [ -z $IFS ]; then
     IFS=$'\n'
 fi
 
-GIT_PULL_TMP=/tmp/git_pull
+GIT_PULL_TMP=/tmp/git_changed_files_for_last_pull
 OPKG_CMDS_TMP=/tmp/opkg_commands
 
-rm -f $OPKG_PULL_TMP
+rm -f $GIT_PULL_TMP
 rm -f $OPKG_CMDS_TMP
 
+get_blob () {   # get the blob of the file(name) passed as $1
+                # note: this can be used for any file in the filesystem
+    echo $(git hash-object $1)
+}
+
+get_commit_for_blob () {
+    # search for the blob in all commits for the file(name) $1
+    echo $(git log --all --pretty=format:%H -- $2   |
+           xargs -I{} bash -c "git ls-tree {} -- $2 |
+           grep -q $1 && echo -n {} && head -n 1")
+}
+
 for fn in $(git diff-tree -r HEAD@{1} HEAD --name-only); do
     if grep -E -q "(DC.*json|dc.*hex|dc.*bin|tariff.*json)" <<< $fn; then
-        echo "$fn" >> $GIT_PULL_TMP
+        # called in repository: $fn is e.g. etc/psa_tariff/tariff01.json
+        # add '/' prefix
+        fn=$(echo $fn | awk '{ printf "/"$0 }')
+        if [[ -f "$fn" ]]; then
+            blob=$(get_blob "$fn")
+            commit=$(get_commit_for_blob $blob "$fn")
+            fsize=$(ls -l "$fn" | awk '{ print $5 }')
+            echo "$fn $fsize $blob $commit" >> $GIT_PULL_TMP
+        fi
     fi
     if grep -E -q ".*opkg_commands" <<< $fn; then
         readarray opkg_commands < <(cat $fn)