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-rw-r--r--storage/filesystem/object.go13
1 files changed, 13 insertions, 0 deletions
diff --git a/storage/filesystem/object.go b/storage/filesystem/object.go
index 846a7b8..e812fe9 100644
--- a/storage/filesystem/object.go
+++ b/storage/filesystem/object.go
@@ -146,6 +146,19 @@ func (s *ObjectStorage) SetEncodedObject(o plumbing.EncodedObject) (h plumbing.H
return o.Hash(), err
}
+// LazyWriter returns a lazy ObjectWriter that is bound to a DotGit file.
+// It first write the header passing on the object type and size, so
+// that the object contents can be written later, without the need to
+// create a MemoryObject and buffering its entire contents into memory.
+func (s *ObjectStorage) LazyWriter() (w io.WriteCloser, wh func(typ plumbing.ObjectType, sz int64) error, err error) {
+ ow, err := s.dir.NewObject()
+ if err != nil {
+ return nil, nil, err
+ }
+
+ return ow, ow.WriteHeader, nil
+}
+
// HasEncodedObject returns nil if the object exists, without actually
// reading the object data from storage.
func (s *ObjectStorage) HasEncodedObject(h plumbing.Hash) (err error) {