From 7ae7080824505b5aef83654c93196da89984a928 Mon Sep 17 00:00:00 2001
From: Iakov Davydov <iakov.davydov@unil.ch>
Date: Mon, 13 Nov 2017 14:46:31 +0100
Subject: [PATCH] FileExists check if a file exists

---
 fs/fs.go | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/fs/fs.go b/fs/fs.go
index e339ed222..a96bff041 100644
--- a/fs/fs.go
+++ b/fs/fs.go
@@ -733,3 +733,16 @@ func CheckClose(c io.Closer, err *error) {
 		*err = cerr
 	}
 }
+
+// FileExists returns true if a file remote exists.
+// If remote is a directory, FileExists returns false.
+func FileExists(fs Fs, remote string) (bool, error) {
+	_, err := fs.NewObject(remote)
+	if err != nil {
+		if err == ErrorObjectNotFound || err == ErrorNotAFile {
+			return false, nil
+		}
+		return false, err
+	}
+	return true, nil
+}