1 files changed, 30 insertions, 0 deletions
diff --git a/t/lib-loose.sh b/t/lib-loose.sh
new file mode 100644
index 0000000000..3613631eaf
--- /dev/null
+++ b/t/lib-loose.sh
@@ -0,0 +1,30 @@
+# Support routines for hand-crafting loose objects.
+
+# Write a loose object into the odb at $1, with object type $2 and contents
+# from stdin. Writes the oid to stdout. Example:
+#
+#   oid=$(echo foo | loose_obj .git/objects blob)
+#
+loose_obj () {
+	cat >tmp_loose.content &&
+	size=$(wc -c <tmp_loose.content) &&
+	{
+		# Do not quote $size here; we want the shell
+		# to strip whitespace that "wc" adds on some platforms.
+		printf "%s %s\0" "$2" $size &&
+		cat tmp_loose.content
+	} >tmp_loose.raw &&
+
+	oid=$(test-tool $test_hash_algo <tmp_loose.raw) &&
+	suffix=${oid#??} &&
+	prefix=${oid%$suffix} &&
+	dir=$1/$prefix &&
+	file=$dir/$suffix &&
+
+	test-tool zlib deflate <tmp_loose.raw >tmp_loose.zlib &&
+	mkdir -p "$dir" &&
+	mv tmp_loose.zlib "$file" &&
+
+	rm tmp_loose.raw tmp_loose.content &&
+	echo "$oid"
+}