abstract type for conf load func

main/json/config_json.go

@@ -3,31 +3,35 @@ package json
 //go:generate errorgen
 
 import (
-	"encoding/json"
 	"io"
-	"io/ioutil"
 
 	"v2ray.com/core"
 	"v2ray.com/core/common"
 	"v2ray.com/core/common/buf"
+	"v2ray.com/core/common/cmdarg"
 	"v2ray.com/core/common/platform/ctlcmd"
+	"v2ray.com/core/infra/conf/serial"
 )
 
 func init() {
 	common.Must(core.RegisterConfigLoader(&core.ConfigFormat{
 		Name:      "JSON",
 		Extension: []string{"json"},
-		Loader: func(input io.Reader) (*core.Config, error) {
-			fns := []string{}
-			data, _ := ioutil.ReadAll(input)
-			json.Unmarshal(data, &fns)
-			jsonContent, err := ctlcmd.Run(append([]string{"config"}, fns...), nil)
-			if err != nil {
-				return nil, newError("failed to execute v2ctl to convert config file.").Base(err).AtWarning()
+		Loader: func(input interface{}) (*core.Config, error) {
+			switch v := input.(type) {
+			case cmdarg.Arg:
+				jsonContent, err := ctlcmd.Run(append([]string{"config"}, v...), nil)
+				if err != nil {
+					return nil, newError("failed to execute v2ctl to convert config file.").Base(err).AtWarning()
+				}
+				return core.LoadConfig("protobuf", "", &buf.MultiBufferContainer{
+					MultiBuffer: jsonContent,
+				})
+			case io.Reader:
+				return serial.LoadJSONConfig(v)
+			default:
+				return nil, newError("unknow type")
 			}
-			return core.LoadConfig("protobuf", "", &buf.MultiBufferContainer{
-				MultiBuffer: jsonContent,
-			})
 		},
 	}))
 }