Fix Message again for the final time!

src/de/steamwar/bungeecore/Message.java

@@ -36,7 +36,7 @@ import java.util.*;
 
 public class Message {
 
-    private static Map<Locale, ResourceBundle> bundles = new HashMap<>();
+    private static Map<String, SteamwarResourceBundle> bundles = new HashMap<>();
 
     public static TextComponent parseToComponent(String message, boolean prefixed, CommandSender sender, Object... params){
         return new TextComponent(TextComponent.fromLegacyText(parse(message, prefixed, locale(sender), params)));
@@ -58,29 +58,52 @@ public class Message {
         return sender instanceof ProxiedPlayer ? ((ProxiedPlayer)sender).getLocale() : Locale.getDefault();
     }
 
-    private static Optional<ResourceBundle> createSingle(String name) {
+    private static SteamwarResourceBundle getOrCreateSingle(String name, String cacheKey) {
+        if (bundles.containsKey(cacheKey)) {
+            return bundles.get(cacheKey);
+        }
         InputStream inputStream = Message.class.getResourceAsStream(name);
-        if(inputStream == null) return Optional.empty();
+        if(inputStream == null) return null;
         try {
-            PropertyResourceBundle propertyResourceBundle = new PropertyResourceBundle(inputStream);
-            if (propertyResourceBundle.getKeys().hasMoreElements()) {
-                return Optional.of(propertyResourceBundle);
-            } else {
-                return Optional.empty();
-            }
+            SteamwarResourceBundle steamwarResourceBundle = new SteamwarResourceBundle(inputStream);
+            bundles.put(cacheKey, steamwarResourceBundle);
+            return steamwarResourceBundle;
         } catch (IOException e) {
-            return Optional.empty();
+            return null;
         }
     }
 
     private static ResourceBundle getResourceBundle(String baseName, Locale locale) {
-        return bundles.computeIfAbsent(locale, l -> {
-            String path = baseName.replace('.', '/');
-            return createSingle("/" + path + "_" + locale.toString() + ".properties")
-                    .or(() -> createSingle("/" + path + "_" + locale.getLanguage() + ".properties"))
-                    .or(() -> createSingle("/" + path + ".properties"))
-                    .orElseThrow(() -> new SecurityException("Could not find resource bundle for " + path + " with locale " + locale + " or " + locale.getLanguage()));
-        });
+        if (bundles.containsKey(locale.toString())) {
+            return bundles.get(locale.toString());
+        }
+        String path = baseName.replace('.', '/');
+
+        SteamwarResourceBundle current = null;
+        SteamwarResourceBundle temp = getOrCreateSingle("/" + path + "_" + locale + ".properties", locale.toString());
+        if (temp != null) {
+            current = temp;
+            bundles.put(locale.toString(), temp);
+        }
+
+        temp = getOrCreateSingle("/" + path + "_" + locale.getLanguage() + ".properties", locale.getLanguage());
+        if (current != null) current.setParent(temp);
+        if (temp != null) {
+            current = temp;
+            bundles.put(locale.toString(), temp);
+        }
+
+        temp = getOrCreateSingle("/" + path + ".properties", "");
+        if (current != null) current.setParent(temp);
+        if (temp != null) {
+            current = temp;
+            bundles.put(locale.toString(), temp);
+        }
+
+        if (current == null) {
+            throw new SecurityException("Could not find resource bundle for " + path + " with locale " + locale + " or " + locale.getLanguage());
+        }
+        return bundles.get(locale.toString());
     }
 
     private static String parse(String message, boolean prefixed, Locale locale, Object... params){
@@ -194,4 +217,15 @@ public class Message {
     public Object[] getParams() {
         return params;
     }
+
+    private static class SteamwarResourceBundle extends PropertyResourceBundle {
+        public SteamwarResourceBundle(InputStream stream) throws IOException {
+            super(stream);
+        }
+
+        @Override
+        protected void setParent(ResourceBundle parent) {
+            super.setParent(parent);
+        }
+    }
 }