1 files changed, 21 insertions, 2 deletions
diff --git a/internal/file.go b/internal/file.go
index 069e68f..81fe43d 100644
--- a/internal/file.go
+++ b/internal/file.go
@@ -5,12 +5,16 @@ import (
 	"strings"
 )
 
-type file struct {
+type file interface {
+	String() string
+}
+
+type fdFile struct {
 	fd   int32
 	name string
 }
 
-func (f file) String() string {
+func (f fdFile) String() string {
 	var sb strings.Builder
 
 	if len(f.name) == 0 {
@@ -24,3 +28,18 @@ func (f file) String() string {
 
 	return sb.String()
 }
+
+type oldnameNewnameFile struct {
+	oldname, newname string
+}
+
+func (f oldnameNewnameFile) String() string {
+	var sb strings.Builder
+
+	sb.WriteString("old:")
+	sb.WriteString(f.oldname)
+	sb.WriteString(" ->new:")
+	sb.WriteString(f.newname)
+
+	return sb.String()
+}