Add LocalizationDB block

Signed-off-by: Knut Ahlers <knut@ahlers.me>

block_localization_db.go

@@ -0,0 +1,41 @@
+package sii
+
+import "strings"
+
+func init() {
+	RegisterBlock(&LocalizationDB{})
+}
+
+type LocalizationDB struct {
+	Keys []string `sii:"key"`
+	Vals []string `sii:"val"`
+
+	blockName string
+}
+
+func (LocalizationDB) Class() string { return "localization_db" }
+
+func (l *LocalizationDB) Init(class, name string) {
+	l.blockName = name
+}
+
+func (l LocalizationDB) Name() string { return l.blockName }
+
+func (l LocalizationDB) GetTranslation(key string) string {
+	key = strings.Trim(key, "@")
+
+	for i, k := range l.Keys {
+		if k == key {
+			val := l.Vals[i]
+
+			if strings.HasPrefix(val, "@@") {
+				// Some translations are translation keys themselves
+				return l.GetTranslation(val)
+			}
+
+			return val
+		}
+	}
+
+	return ""
+}