Merge pull request #22 from mcuadros/fix-empty

plumbing: transport, fix handling of empty adv-refs on upload-pack

1 files changed, 8 insertions, 0 deletions

diff --git a/plumbing/protocol/packp/advrefs.go b/plumbing/protocol/packp/advrefs.go
index ab286c6..1bd724c 100644
--- a/plumbing/protocol/packp/advrefs.go
+++ b/plumbing/protocol/packp/advrefs.go
@@ -201,3 +201,11 @@ func (a *AdvRefs) addSymbolicRefs(s storer.ReferenceStorer) error {
 func (a *AdvRefs) supportSymrefs() bool {
 	return a.Capabilities.Supports(capability.SymRef)
 }
+
+// IsEmpty returns true if doesn't contain any reference.
+func (a *AdvRefs) IsEmpty() bool {
+	return a.Head == nil &&
+		len(a.References) == 0 &&
+		len(a.Peeled) == 0 &&
+		len(a.Shallows) == 0
+}