1 files changed, 17 insertions, 4 deletions
diff --git a/main.go b/main.go
index b41afa4..588cda3 100644
--- a/main.go
+++ b/main.go
@@ -1,7 +1,9 @@
 package main
 
 import (
+	"encoding/json"
 	"flag"
+	"fmt"
 	"os"
 	"strings"
 
@@ -11,15 +13,15 @@ import (
 var (
 	input         = stringsArray{}
 	output        = ""
-	indent        = 2
 	replaceArrays = false
+	outType       = "yaml"
 )
 
 func main() {
 	flag.Var(&input, "i", "input files")
 	flag.StringVar(&output, "o", "out.yaml", "output file")
-	flag.IntVar(&indent, "indent", 2, "changes the used indentation used when encoding")
 	flag.BoolVar(&replaceArrays, "replace_arrays", false, "replace arrays with same keys. Merge otherwise.")
+	flag.StringVar(&outType, "out_type", "yaml", "output type, 'yaml' (default) or 'json'")
 	flag.Parse()
 
 	result := map[string]any{}
@@ -42,8 +44,15 @@ func main() {
 	}
 	defer fp.Close()
 
-	enc := yaml.NewEncoder(fp)
-	enc.SetIndent(indent)
+	var enc Encoder
+	switch outType {
+	case "yaml":
+		enc = yaml.NewEncoder(fp)
+	case "json":
+		enc = json.NewEncoder(fp)
+	default:
+		panic(fmt.Errorf("unknown output type: %s", outType))
+	}
 	if err := enc.Encode(result); err != nil {
 		panic(err)
 	}
@@ -86,3 +95,7 @@ func (i *stringsArray) Set(value string) error {
 func (i *stringsArray) String() string {
 	return strings.Join(*i, ",")
 }
+
+type Encoder interface {
+	Encode(any) error
+}