1 files changed, 16 insertions, 0 deletions
diff --git a/internal/errutil/errutil.go b/internal/errutil/errutil.go
new file mode 100644
index 00000000..af658410
--- /dev/null
+++ b/internal/errutil/errutil.go
@@ -0,0 +1,16 @@
+// Copyright 2020 The Gogs Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package errutil
+
+// NotFound represents a not found error.
+type NotFound interface {
+	NotFound() bool
+}
+
+// IsNotFound returns true if the error is a not found error.
+func IsNotFound(err error) bool {
+	e, ok := err.(NotFound)
+	return ok && e.NotFound()
+}