From 3657a32e0ead55601a2af578abecd65dd2d8b64b Mon Sep 17 00:00:00 2001
From: Javi Fontan <jfontan@gmail.com>
Date: Fri, 27 Jul 2018 12:24:09 +0200
Subject: storage/filesystem: add back IndexStorage

Signed-off-by: Javi Fontan <jfontan@gmail.com>
---
 storage/filesystem/index.go | 47 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 storage/filesystem/index.go

diff --git a/storage/filesystem/index.go b/storage/filesystem/index.go
new file mode 100644
index 0000000..2ebf57e
--- /dev/null
+++ b/storage/filesystem/index.go
@@ -0,0 +1,47 @@
+package filesystem
+
+import (
+	"os"
+
+	"gopkg.in/src-d/go-git.v4/plumbing/format/index"
+	"gopkg.in/src-d/go-git.v4/storage/filesystem/dotgit"
+	"gopkg.in/src-d/go-git.v4/utils/ioutil"
+)
+
+type IndexStorage struct {
+	dir *dotgit.DotGit
+}
+
+func (s *IndexStorage) SetIndex(idx *index.Index) (err error) {
+	f, err := s.dir.IndexWriter()
+	if err != nil {
+		return err
+	}
+
+	defer ioutil.CheckClose(f, &err)
+
+	e := index.NewEncoder(f)
+	err = e.Encode(idx)
+	return err
+}
+
+func (s *IndexStorage) Index() (i *index.Index, err error) {
+	idx := &index.Index{
+		Version: 2,
+	}
+
+	f, err := s.dir.Index()
+	if err != nil {
+		if os.IsNotExist(err) {
+			return idx, nil
+		}
+
+		return nil, err
+	}
+
+	defer ioutil.CheckClose(f, &err)
+
+	d := index.NewDecoder(f)
+	err = d.Decode(idx)
+	return idx, err
+}
-- 
cgit