objectstore/packed: Add initial pack reading support

1 files changed, 34 insertions, 0 deletions

diff --git a/objectstore/packed/read_bytes.go b/objectstore/packed/read_bytes.go
new file mode 100644
index 00000000..b6f42a0d
--- /dev/null
+++ b/objectstore/packed/read_bytes.go
@@ -0,0 +1,34 @@
+package packed
+
+import (
+	"fmt"
+
+	"codeberg.org/lindenii/furgit/objectheader"
+	"codeberg.org/lindenii/furgit/objectid"
+	"codeberg.org/lindenii/furgit/objecttype"
+)
+
+// ReadBytesContent reads an object's type and content bytes.
+func (store *Store) ReadBytesContent(id objectid.ObjectID) (objecttype.Type, []byte, error) {
+	loc, err := store.lookup(id)
+	if err != nil {
+		return objecttype.TypeInvalid, nil, err
+	}
+	return store.deltaResolveContent(loc)
+}
+
+// ReadBytesFull reads a full serialized object as "type size\0content".
+func (store *Store) ReadBytesFull(id objectid.ObjectID) ([]byte, error) {
+	ty, content, err := store.ReadBytesContent(id)
+	if err != nil {
+		return nil, err
+	}
+	header, ok := objectheader.Encode(ty, int64(len(content)))
+	if !ok {
+		return nil, fmt.Errorf("objectstore/packed: failed to encode object header for type %d", ty)
+	}
+	out := make([]byte, len(header)+len(content))
+	copy(out, header)
+	copy(out[len(header):], content)
+	return out, nil
+}