worktree: Remove and Move methods

2 files changed, 29 insertions, 0 deletions

diff --git a/plumbing/format/index/index.go b/plumbing/format/index/index.go
index 782e3d1..9de4230 100644
--- a/plumbing/format/index/index.go
+++ b/plumbing/format/index/index.go
@@ -62,6 +62,18 @@ func (i *Index) Entry(path string) (*Entry, error) {
 	return nil, ErrEntryNotFound
 }
 
+// Remove remove the entry that match the give path and returns deleted entry.
+func (i *Index) Remove(path string) (*Entry, error) {
+	for index, e := range i.Entries {
+		if e.Name == path {
+			i.Entries = append(i.Entries[:index], i.Entries[index+1:]...)
+			return e, nil
+		}
+	}
+
+	return nil, ErrEntryNotFound
+}
+
 // String is equivalent to `git ls-files --stage --debug`
 func (i *Index) String() string {
 	buf := bytes.NewBuffer(nil)
diff --git a/plumbing/format/index/index_test.go b/plumbing/format/index/index_test.go
index 67286b3..cad5f9c 100644
--- a/plumbing/format/index/index_test.go
+++ b/plumbing/format/index/index_test.go
@@ -20,3 +20,20 @@ func (s *IndexSuite) TestIndexEntry(c *C) {
 	c.Assert(e, IsNil)
 	c.Assert(err, Equals, ErrEntryNotFound)
 }
+
+func (s *IndexSuite) TestIndexRemove(c *C) {
+	idx := &Index{
+		Entries: []*Entry{
+			{Name: "foo", Size: 42},
+			{Name: "bar", Size: 82},
+		},
+	}
+
+	e, err := idx.Remove("foo")
+	c.Assert(err, IsNil)
+	c.Assert(e.Name, Equals, "foo")
+
+	e, err = idx.Remove("foo")
+	c.Assert(e, IsNil)
+	c.Assert(err, Equals, ErrEntryNotFound)
+}