output: extract iniitializer function

cmd/kubeconform/main.go

@@ -136,19 +136,6 @@ func (ap *arrayParam) Set(value string) error {
 	return nil
 }
 
-func getLogger(outputFormat string, printSummary, verbose bool) (output.Output, error) {
-	w := os.Stdout
-
-	switch {
-	case outputFormat == "text":
-		return output.Text(w, printSummary, verbose), nil
-	case outputFormat == "json":
-		return output.JSON(w, printSummary, verbose), nil
-	default:
-		return nil, fmt.Errorf("-output must be text or json")
-	}
-}
-
 func skipKindsMap(skipKindsCSV string) map[string]bool {
 	splitKinds := strings.Split(skipKindsCSV, ",")
 	skipKinds := map[string]bool{}
@@ -281,7 +268,7 @@ func realMain() int {
 	}()
 
 	var o output.Output
-	if o, err = getLogger(outputFormat, summary, verbose); err != nil {
+	if o, err = output.New(outputFormat, summary, verbose); err != nil {
 		fmt.Fprintln(os.Stderr, err)
 		return 1
 	}

pkg/output/output.go

@@ -18,6 +18,19 @@ type Output interface {
 	Flush() error
 }
 
+func New(outputFormat string, printSummary, verbose bool) (Output, error) {
+	w := os.Stdout
+
+	switch {
+	case outputFormat == "text":
+		return Text(w, printSummary, verbose), nil
+	case outputFormat == "json":
+		return JSON(w, printSummary, verbose), nil
+	default:
+		return nil, fmt.Errorf("`outputFormat` must be 'text' or 'json'")
+	}
+}
+
 func status(kind, name string, err error, skipped bool) int {
 	if name == "" && kind == "" && err == nil && skipped == false {
 		return EMPTY