Fix string_slice with empty value

Currently, if you don't set any value for a StringSliceVar, it will
end-up failing with an EOF error. It fails because the CSV parser for
the value can't read anything.

Special case when the string is empty to return an empty list.

1 files changed, 9 insertions, 2 deletions

diff --git a/string_slice.go b/string_slice.go
index b53648b..f2a49d9 100644
--- a/string_slice.go
+++ b/string_slice.go
@@ -21,10 +21,17 @@ func newStringSliceValue(val []string, p *[]string) *stringSliceValue {
 	return ssv
 }
 
-func (s *stringSliceValue) Set(val string) error {
+func readAsCSV(val string) ([]string, error) {
+	if val == "" {
+		return []string{}, nil
+	}
 	stringReader := strings.NewReader(val)
 	csvReader := csv.NewReader(stringReader)
-	v, err := csvReader.Read()
+	return csvReader.Read()
+}
+
+func (s *stringSliceValue) Set(val string) error {
+	v, err := readAsCSV(val)
 	if err != nil {
 		return err
 	}