From adf13c61233a61c93440b4116ace5e13324ac36c Mon Sep 17 00:00:00 2001
From: Brad Fitzpatrick <brad@danga.com>
Date: Mon, 31 Jan 2011 10:19:37 -0800
Subject: [PATCH] go blobserver: fix crash if short blobrefs requested.

---
 server/go/blobserver/localdisk.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/server/go/blobserver/localdisk.go b/server/go/blobserver/localdisk.go
index 645352929..0de7f92d6 100644
--- a/server/go/blobserver/localdisk.go
+++ b/server/go/blobserver/localdisk.go
@@ -52,6 +52,9 @@ func BlobFileBaseName(b *blobref.BlobRef) string {
 
 func BlobDirectoryName(b *blobref.BlobRef) string {
 	d := b.Digest()
+	if len(d) < 6 {
+		d = d + "______"
+	}
 	return fmt.Sprintf("%s/%s/%s/%s", *flagStorageRoot, b.HashName(), d[0:3], d[3:6])
 }