Add i18n util code and update translation files.

i18n/util.go

@@ -0,0 +1,61 @@
+// Copyright 2021 The casbin Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package i18n
+
+import (
+	"fmt"
+
+	"github.com/casbin/casdoor/util"
+)
+
+func getI18nFilePath(language string) string {
+	return fmt.Sprintf("../web/src/locales/%s/data.json", language)
+}
+
+func readI18nFile(language string) *I18nData {
+	s := util.ReadStringFromPath(getI18nFilePath(language))
+
+	data := &I18nData{}
+	err := util.JsonToStruct(s, data)
+	if err != nil {
+		panic(err)
+	}
+	return data
+}
+
+func writeI18nFile(language string, data *I18nData) {
+	s := util.StructToJsonFormatted(data)
+	println(s)
+
+	util.WriteStringToPath(s, getI18nFilePath(language))
+}
+
+func applyData(data1 *I18nData, data2 *I18nData) {
+	for namespace, pairs2 := range *data2 {
+		if _, ok := (*data1)[namespace]; !ok {
+			continue
+		}
+
+		pairs1 := (*data1)[namespace]
+
+		for key, value := range pairs2 {
+			if _, ok := pairs1[key]; !ok {
+				continue
+			}
+
+			pairs1[key] = value
+		}
+	}
+}