Simplify locale package usage (refactoring)

locale/catalog.go

@@ -0,0 +1,36 @@
+// Copyright 2018 Frédéric Guillot. All rights reserved.
+// Use of this source code is governed by the Apache 2.0
+// license that can be found in the LICENSE file.
+
+package locale // import "miniflux.app/locale"
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+type translationDict map[string]interface{}
+type catalog map[string]translationDict
+
+var defaultCatalog catalog
+
+func init() {
+	defaultCatalog = make(catalog)
+
+	for language, data := range translations {
+		messages, err := parseTranslationDict(data)
+		if err != nil {
+			panic(err)
+		}
+
+		defaultCatalog[language] = messages
+	}
+}
+
+func parseTranslationDict(data string) (translationDict, error) {
+	var translations translationDict
+	if err := json.Unmarshal([]byte(data), &translations); err != nil {
+		return nil, fmt.Errorf("invalid translation file: %v", err)
+	}
+	return translations, nil
+}