1 files changed, 29 insertions, 0 deletions
diff --git a/cmd/lulu/duration.go b/cmd/lulu/duration.go
new file mode 100644
index 0000000..a9aa375
--- /dev/null
+++ b/cmd/lulu/duration.go
@@ -0,0 +1,29 @@
+package main
+
+import (
+	"time"
+)
+
+type durationValue struct {
+	p     *time.Duration
+	isSet bool
+}
+
+func (v durationValue) String() string {
+	if v.p != nil {
+		return v.p.String()
+	}
+	return ""
+}
+
+func (v *durationValue) Set(s string) error {
+	d, err := time.ParseDuration(s)
+	if err != nil {
+		return err
+	}
+	*v.p = d
+	v.isSet = true
+	return nil
+}
+
+func (v durationValue) IsSet() bool { return v.isSet }