config loader

config_loader.go

@@ -0,0 +1,36 @@
+package core
+
+import (
+	"io"
+	"io/ioutil"
+
+	"v2ray.com/core/common"
+
+	"github.com/golang/protobuf/proto"
+)
+
+type ConfigLoader func(input io.Reader) (*Config, error)
+
+var configLoaderCache map[ConfigFormat]ConfigLoader
+
+func RegisterConfigLoader(format ConfigFormat, loader ConfigLoader) error {
+	configLoaderCache[format] = loader
+	return nil
+}
+
+func LoadConfig(format ConfigFormat, input io.Reader) (*Config, error) {
+	loader, found := configLoaderCache[format]
+	if !found {
+		return nil, common.ErrBadConfiguration
+	}
+	return loader(input)
+}
+
+func LoadProtobufConfig(input io.Reader) (*Config, error) {
+	config := new(Config)
+	data, _ := ioutil.ReadAll(input)
+	if err := proto.Unmarshal(data, config); err != nil {
+		return nil, err
+	}
+	return config, nil
+}