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-rwxr-xr-xcontrib/devtools/git-subtree-check.sh37
1 files changed, 27 insertions, 10 deletions
diff --git a/contrib/devtools/git-subtree-check.sh b/contrib/devtools/git-subtree-check.sh
index 2384d66cad..184951715e 100755
--- a/contrib/devtools/git-subtree-check.sh
+++ b/contrib/devtools/git-subtree-check.sh
@@ -18,7 +18,7 @@ find_latest_squash()
sub=
git log --grep="^git-subtree-dir: $dir/*\$" \
--pretty=format:'START %H%n%s%n%n%b%nEND%n' "$COMMIT" |
- while read a b junk; do
+ while read a b _; do
case "$a" in
START) sq="$b" ;;
git-subtree-mainline:) main="$b" ;;
@@ -41,21 +41,17 @@ find_latest_squash()
done
}
+# find latest subtree update
latest_squash="$(find_latest_squash "$DIR")"
if [ -z "$latest_squash" ]; then
echo "ERROR: $DIR is not a subtree" >&2
exit 2
fi
-
set $latest_squash
old=$1
rev=$2
-if [ "d$(git cat-file -t $rev 2>/dev/null)" != dcommit ]; then
- echo "ERROR: subtree commit $rev unavailable. Fetch/update the subtree repository" >&2
- exit 2
-fi
-tree_subtree=$(git show -s --format="%T" $rev)
-echo "$DIR in $COMMIT was last updated to upstream commit $rev (tree $tree_subtree)"
+
+# get the tree in the current commit
tree_actual=$(git ls-tree -d "$COMMIT" "$DIR" | head -n 1)
if [ -z "$tree_actual" ]; then
echo "FAIL: subtree directory $DIR not found in $COMMIT" >&2
@@ -69,9 +65,30 @@ if [ "d$tree_actual_type" != "dtree" ]; then
echo "FAIL: subtree directory $DIR is not a tree in $COMMIT" >&2
exit 1
fi
+
+# get the tree at the time of the last subtree update
+tree_commit=$(git show -s --format="%T" $old)
+echo "$DIR in $COMMIT was last updated in commit $old (tree $tree_commit)"
+
+# ... and compare the actual tree with it
+if [ "$tree_actual_tree" != "$tree_commit" ]; then
+ git diff $tree_commit $tree_actual_tree >&2
+ echo "FAIL: subtree directory was touched without subtree merge" >&2
+ exit 1
+fi
+
+# get the tree in the subtree commit referred to
+if [ "d$(git cat-file -t $rev 2>/dev/null)" != dcommit ]; then
+ echo "subtree commit $rev unavailable: cannot compare" >&2
+ exit
+fi
+tree_subtree=$(git show -s --format="%T" $rev)
+echo "$DIR in $COMMIT was last updated to upstream commit $rev (tree $tree_subtree)"
+
+# ... and compare the actual tree with it
if [ "$tree_actual_tree" != "$tree_subtree" ]; then
- git diff-tree $tree_actual_tree $tree_subtree >&2
- echo "FAIL: subtree directory tree doesn't match subtree commit tree" >&2
+ echo "FAIL: subtree update commit differs from upstream tree!" >&2
exit 1
fi
+
echo "GOOD"