From 6d799b169180a1de8b78875e0288776a6ad0d4e2 Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Thu, 2 Apr 2026 08:54:27 +0000
Subject: object/header: Add

---
 object/header/append.go | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 object/header/append.go

(limited to 'object/header/append.go')

diff --git a/object/header/append.go b/object/header/append.go
new file mode 100644
index 00000000..5b062e05
--- /dev/null
+++ b/object/header/append.go
@@ -0,0 +1,29 @@
+package header
+
+import (
+	"strconv"
+
+	"codeberg.org/lindenii/furgit/object/typ"
+)
+
+// Append appends a canonical loose-object header ("type size\x00") to dst.
+func Append(dst []byte, ty typ.Type, size int64) ([]byte, bool) {
+	if size < 0 {
+		return nil, false
+	}
+
+	tyName, ok := ty.Name()
+	if !ok {
+		return nil, false
+	}
+
+	sizeStr := strconv.FormatInt(size, 10)
+	out := make([]byte, 0, len(dst)+len(tyName)+len(sizeStr)+2)
+	out = append(out, dst...)
+	out = append(out, tyName...)
+	out = append(out, ' ')
+	out = append(out, sizeStr...)
+	out = append(out, 0)
+
+	return out, true
+}
-- 
cgit v1.3.1-10-gc9f91