From ae879b8cf5a87199802a33d6b15c76afafa8002b Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Sat, 21 Feb 2026 05:35:12 +0800
Subject: objectstore/packed: Add initial pack reading support

---
 objectstore/packed/read_header.go | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 objectstore/packed/read_header.go

(limited to 'objectstore/packed/read_header.go')

diff --git a/objectstore/packed/read_header.go b/objectstore/packed/read_header.go
new file mode 100644
index 00000000..c72188b9
--- /dev/null
+++ b/objectstore/packed/read_header.go
@@ -0,0 +1,19 @@
+package packed
+
+import (
+	"codeberg.org/lindenii/furgit/objectid"
+	"codeberg.org/lindenii/furgit/objecttype"
+)
+
+// ReadHeader reads an object's type and declared content size.
+func (store *Store) ReadHeader(id objectid.ObjectID) (objecttype.Type, int64, error) {
+	loc, err := store.lookup(id)
+	if err != nil {
+		return objecttype.TypeInvalid, 0, err
+	}
+	plan, err := store.deltaPlanFor(loc)
+	if err != nil {
+		return objecttype.TypeInvalid, 0, err
+	}
+	return plan.baseType, plan.declaredSize, nil
+}
-- 
cgit v1.3.1-10-gc9f91