add a new type StringArray

1 files changed, 13 insertions, 5 deletions

diff --git a/string_slice.go b/string_slice.go
index 927a440..51e3c5d 100644
--- a/string_slice.go
+++ b/string_slice.go
@@ -31,6 +31,17 @@ func readAsCSV(val string) ([]string, error) {
 	return csvReader.Read()
 }
 
+func writeAsCSV(vals []string) (string, error) {
+	b := &bytes.Buffer{}
+	w := csv.NewWriter(b)
+	err := w.Write(vals)
+	if err != nil {
+		return "", err
+	}
+	w.Flush()
+	return strings.TrimSuffix(b.String(), fmt.Sprintln()), nil
+}
+
 func (s *stringSliceValue) Set(val string) error {
 	v, err := readAsCSV(val)
 	if err != nil {
@@ -50,11 +61,8 @@ func (s *stringSliceValue) Type() string {
 }
 
 func (s *stringSliceValue) String() string {
-	b := &bytes.Buffer{}
-	w := csv.NewWriter(b)
-	w.Write(*s.value)
-	w.Flush()
-	return "[" + strings.TrimSuffix(b.String(), fmt.Sprintln()) + "]"
+	str, _ := writeAsCSV(*s.value)
+	return "[" + str + "]"
 }
 
 func stringSliceConv(sval string) (interface{}, error) {