From 262ba28dec9074069ffcc9fc66f6b58878399e02 Mon Sep 17 00:00:00 2001
From: Nick Craig-Wood <nick@craig-wood.com>
Date: Fri, 30 Aug 2019 11:50:22 +0100
Subject: [PATCH] config: add ReadNonEmptyLine utility function

---
 fs/config/config.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/fs/config/config.go b/fs/config/config.go
index bb636b0e4..d25aabf61 100644
--- a/fs/config/config.go
+++ b/fs/config/config.go
@@ -624,6 +624,16 @@ var ReadLine = func() string {
 	return strings.TrimSpace(line)
 }
 
+// ReadNonEmptyLine prints prompt and calls Readline until non empty
+func ReadNonEmptyLine(prompt string) string {
+	result := ""
+	for result == "" {
+		fmt.Print(prompt)
+		result = strings.TrimSpace(ReadLine())
+	}
+	return result
+}
+
 // Command - choose one
 func Command(commands []string) byte {
 	opts := []string{}