Add locale support ford deprecated messages

experimental/deprecated/constants.go

@@ -1,8 +1,11 @@
 package deprecated
 
 import (
+	"fmt"
+
 	"github.com/sagernet/sing-box/common/badversion"
 	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/experimental/locale"
 	F "github.com/sagernet/sing/common/format"
 
 	"golang.org/x/mod/semver"
@@ -33,10 +36,11 @@ func (n Note) Impending() bool {
 }
 
 func (n Note) Message() string {
-	return F.ToString(
-		n.Description, " is deprecated in sing-box ", n.DeprecatedVersion,
-		" and will be removed in sing-box ", n.ScheduledVersion, ", please checkout documentation for migration.",
-	)
+	if n.MigrationLink != "" {
+		return fmt.Sprintf(locale.Current().DeprecatedMessage, n.Description, n.DeprecatedVersion, n.ScheduledVersion)
+	} else {
+		return fmt.Sprintf(locale.Current().DeprecatedMessageNoLink, n.Description, n.DeprecatedVersion, n.ScheduledVersion)
+	}
 }
 
 func (n Note) MessageWithLink() string {

experimental/libbox/setup.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/sagernet/sing-box/common/humanize"
 	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/experimental/locale"
 	_ "github.com/sagernet/sing-box/include"
 	"github.com/sagernet/sing-box/log"
 )
@@ -54,6 +55,10 @@ func SetupWithUsername(basePath string, workingPath string, tempPath string, use
 	return nil
 }
 
+func SetLocale(localeId string) {
+	locale.Set(localeId)
+}
+
 func Version() string {
 	return C.Version
 }

experimental/locale/locale.go

@@ -0,0 +1,30 @@
+package locale
+
+var (
+	localeRegistry = make(map[string]*Locale)
+	current        = defaultLocal
+)
+
+type Locale struct {
+	// deprecated messages for graphical clients
+	DeprecatedMessage       string
+	DeprecatedMessageNoLink string
+}
+
+var defaultLocal = &Locale{
+	DeprecatedMessage:       "%s is deprecated in sing-box %s and will be removed in sing-box %s please checkout documentation for migration.",
+	DeprecatedMessageNoLink: "%s is deprecated in sing-box %s and will be removed in sing-box %s.",
+}
+
+func Current() *Locale {
+	return current
+}
+
+func Set(localeId string) bool {
+	locale, loaded := localeRegistry[localeId]
+	if !loaded {
+		return false
+	}
+	current = locale
+	return true
+}

experimental/locale/locale_zh_CN.go

@@ -0,0 +1,10 @@
+package locale
+
+var warningMessageForEndUsers = "\n\n如果您不明白此消息意味着什么：您的配置文件已过时，且将很快不可用。请联系您的配置提供者以更新配置。"
+
+func init() {
+	localeRegistry["zh_CN"] = &Locale{
+		DeprecatedMessage:       "%s 已在 sing-box %s 中被弃用，且将在 sing-box %s 中被移除，请参阅迁移指南。" + warningMessageForEndUsers,
+		DeprecatedMessageNoLink: "%s 已在 sing-box %s 中被弃用，且将在 sing-box %s 中被移除。" + warningMessageForEndUsers,
+	}
+}