Add namespaces for translations

Core/src/main/java/com/plotsquared/core/PlotSquared.java

@@ -33,6 +33,9 @@ import com.plotsquared.core.configuration.Settings;
 import com.plotsquared.core.configuration.Storage;
 import com.plotsquared.core.configuration.caption.CaptionLoader;
 import com.plotsquared.core.configuration.caption.CaptionMap;
+import com.plotsquared.core.configuration.caption.DummyCaptionMap;
+import com.plotsquared.core.configuration.caption.LocalizedCaptionMap;
+import com.plotsquared.core.configuration.caption.TranslatableCaption;
 import com.plotsquared.core.configuration.file.YamlConfiguration;
 import com.plotsquared.core.configuration.serialization.ConfigurationSerialization;
 import com.plotsquared.core.database.DBFunc;
@@ -142,7 +145,7 @@ public class PlotSquared {
     public HashMap<String, HashMap<PlotId, Plot>> plots_tmp;
     private YamlConfiguration config;
     // Localization
-    private CaptionMap captionMap;
+    private Map<String, CaptionMap> captionMaps;
     // Platform / Version / Update URL
     private PlotVersion version;
     // Files and configuration
@@ -194,6 +197,8 @@ public class PlotSquared {
                 return;
             }
 
+            this.captionMaps = new HashMap<>();
+
             // Setup localization
             CaptionMap captionMap;
             if (Settings.Enabled_Components.PER_USER_LOCALE) {
@@ -202,8 +207,8 @@ public class PlotSquared {
                 String fileName = "messages_" + Settings.Enabled_Components.DEFAULT_LOCALE + ".json";
                 captionMap = CaptionLoader.loadSingle(Paths.get("lang", fileName));
             }
-            this.captionMap = captionMap;
 
+            this.captionMaps.put(TranslatableCaption.DEFAULT_NAMESPACE, captionMap);
             this.worldedit = WorldEdit.getInstance();
 
             // Create Event utility class
@@ -1471,8 +1476,30 @@ public class PlotSquared {
         return this.worldConfiguration;
     }
 
-    public CaptionMap getCaptionMap() {
+    /**
-        return this.captionMap;
+     * Get the caption map belonging to a namespace. If none exists, a dummy
+     * caption map will be returned.
+     *
+     * @param namespace Namespace
+     * @return Map instance
+     * @see #registerCaptionMap(String, CaptionMap) To register a caption map
+     */
+    @Nonnull public CaptionMap getCaptionMap(@Nonnull final String namespace) {
+        return this.captionMaps.computeIfAbsent(namespace.toLowerCase(Locale.ENGLISH),
+            missingNamespace -> new DummyCaptionMap());
+    }
+
+    /**
+     * Register a caption map
+     *
+     * @param namespace Namespace
+     * @param captionMap Map instance
+     */
+    public void registerCaptionMap(@Nonnull final String namespace, @Nonnull final CaptionMap captionMap) {
+        if (namespace.equalsIgnoreCase(TranslatableCaption.DEFAULT_NAMESPACE)) {
+            throw new IllegalArgumentException("Cannot replace default caption map");
+        }
+        this.captionMaps.put(namespace.toLowerCase(Locale.ENGLISH), captionMap);
     }
 
     public File getJarFile() {

Core/src/main/java/com/plotsquared/core/configuration/caption/CaptionMap.java

@@ -51,7 +51,7 @@ public interface CaptionMap {
      * @return Component
      * @throws NoSuchCaptionException if no caption with the given key exists
      */
-    String getMessage(@Nonnull TranslatableCaption caption, @Nonnull LocaleHolder localeHolder) throws NoSuchCaptionException;
+    @Nonnull String getMessage(@Nonnull TranslatableCaption caption, @Nonnull LocaleHolder localeHolder) throws NoSuchCaptionException;
 
     /**
      * Check if the map supports a given locale
@@ -70,7 +70,7 @@ public interface CaptionMap {
 
     class NoSuchCaptionException extends IllegalArgumentException {
 
-        public NoSuchCaptionException(@Nonnull final KeyedCaption caption) {
+        public NoSuchCaptionException(@Nonnull final NamespacedCaption caption) {
             super(String.format("No caption with the key '%s' exists in the map", caption.getKey()));
         }
 

Core/src/main/java/com/plotsquared/core/configuration/caption/DummyCaptionMap.java

@@ -0,0 +1,54 @@
+/*
+ *       _____  _       _    _____                                _
+ *      |  __ \| |     | |  / ____|                              | |
+ *      | |__) | | ___ | |_| (___   __ _ _   _  __ _ _ __ ___  __| |
+ *      |  ___/| |/ _ \| __|\___ \ / _` | | | |/ _` | '__/ _ \/ _` |
+ *      | |    | | (_) | |_ ____) | (_| | |_| | (_| | | |  __/ (_| |
+ *      |_|    |_|\___/ \__|_____/ \__, |\__,_|\__,_|_|  \___|\__,_|
+ *                                    | |
+ *                                    |_|
+ *            PlotSquared plot management system for Minecraft
+ *                  Copyright (C) 2020 IntellectualSites
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.plotsquared.core.configuration.caption;
+
+import javax.annotation.Nonnull;
+import java.util.Locale;
+
+/**
+ * {@link CaptionMap} implementation that throws exception on all getters
+ */
+public class DummyCaptionMap implements CaptionMap {
+
+    @Override @Nonnull public String getMessage(@Nonnull final TranslatableCaption caption)
+        throws NoSuchCaptionException {
+        throw new NoSuchCaptionException(caption);
+    }
+
+    @Override @Nonnull public String getMessage(@Nonnull final TranslatableCaption caption,
+                                       @Nonnull final LocaleHolder localeHolder) throws NoSuchCaptionException {
+        throw new NoSuchCaptionException(caption);
+    }
+
+    @Override public boolean supportsLocale(@Nonnull Locale locale) {
+        return false;
+    }
+
+    @Override @Nonnull public Locale getLocale() {
+        throw new UnsupportedOperationException("Cannot get locale of DummyCaptionMap");
+    }
+
+}

Core/src/main/java/com/plotsquared/core/configuration/caption/LocalizedCaptionMap.java

@@ -43,7 +43,8 @@ public class LocalizedCaptionMap implements CaptionMap {
         return this.captions.get(caption);
     }
 
-    @Override @Nonnull public String getMessage(@Nonnull final TranslatableCaption caption, @Nonnull final LocaleHolder localeHolder) {
+    @Override @Nonnull public String getMessage(@Nonnull final TranslatableCaption caption,
+                                                @Nonnull final LocaleHolder localeHolder) {
         return getMessage(caption); // use the translation of this locale
     }
 

Core/src/main/java/com/plotsquared/core/configuration/caption/NamespacedCaption.java

@@ -28,9 +28,9 @@ package com.plotsquared.core.configuration.caption;
 import javax.annotation.Nonnull;
 
 /**
- * A {@link Caption} that can be identified by a key
+ * A {@link Caption} that can be identified by a namespace-key pair
  */
-public interface KeyedCaption extends Caption {
+public interface NamespacedCaption extends Caption {
 
     /**
      * Get the key that identifies this caption
@@ -39,4 +39,11 @@ public interface KeyedCaption extends Caption {
      */
     @Nonnull String getKey();
 
+    /**
+     * Get the namespace that this caption belongs to
+     *
+     * @return Namespace
+     */
+    @Nonnull String getNamespace();
+
 }

Core/src/main/java/com/plotsquared/core/configuration/caption/TranslatableCaption.java

@@ -25,37 +25,92 @@
  */
 package com.plotsquared.core.configuration.caption;
 
+import com.google.common.base.Objects;
 import com.plotsquared.core.PlotSquared;
 
 import javax.annotation.Nonnull;
 import java.util.Locale;
+import java.util.regex.Pattern;
 
 /**
  * Caption that is user modifiable
  */
-public final class TranslatableCaption implements KeyedCaption {
+public final class TranslatableCaption implements NamespacedCaption {
 
+    /**
+     * Default caption namespace
+     */
+    public static final String DEFAULT_NAMESPACE = "plotsquared";
+
+    private final String namespace;
     private final String key;
 
-    private TranslatableCaption(@Nonnull final String key) {
+    private TranslatableCaption(@Nonnull final String namespace, @Nonnull final String key) {
+        this.namespace = namespace;
         this.key = key;
     }
 
     /**
      * Get a new {@link TranslatableCaption} instance
      *
-     * @param key Caption key
+     * @param rawKey Caption key in the format namespace:key. If no namespace is
+     *               included, {@link #DEFAULT_NAMESPACE} will be used.
      * @return Caption instance
      */
-    @Nonnull public static TranslatableCaption of(@Nonnull final String key) {
+    @Nonnull public static TranslatableCaption of(@Nonnull final String rawKey) {
-        return new TranslatableCaption(key.toLowerCase(Locale.ENGLISH));
+        final String namespace;
+        final String key;
+        if (rawKey.contains(":")) {
+            final String[] split = rawKey.split(Pattern.quote(":"));
+            namespace = split[0];
+            key = split[1];
+        } else {
+            namespace = DEFAULT_NAMESPACE;
+            key = rawKey;
+        }
+        return new TranslatableCaption(namespace.toLowerCase(Locale.ENGLISH),
+            key.toLowerCase(Locale.ENGLISH));
+    }
+
+    /**
+     * Get a new {@link TranslatableCaption} instance
+     *
+     * @param namespace Caption namespace
+     * @param key       Caption key
+     * @return Caption instance
+     */
+    @Nonnull public static TranslatableCaption of(@Nonnull final String namespace,
+        @Nonnull final String key) {
+        return new TranslatableCaption(namespace.toLowerCase(Locale.ENGLISH),
+            key.toLowerCase(Locale.ENGLISH));
     }
 
     @Override @Nonnull public String getComponent(@Nonnull final LocaleHolder localeHolder) {
-        return PlotSquared.get().getCaptionMap().getMessage(this, localeHolder);
+        return PlotSquared.get().getCaptionMap(this.namespace).getMessage(this, localeHolder);
     }
 
-    @Nonnull public String getKey() {
+    @Override @Nonnull public String getKey() {
         return this.key;
     }
+
+    @Override @Nonnull public String getNamespace() {
+        return this.namespace;
+    }
+
+    @Override public boolean equals(final Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || this.getClass() != o.getClass()) {
+            return false;
+        }
+        final TranslatableCaption that = (TranslatableCaption) o;
+        return Objects.equal(this.getNamespace(), that.getNamespace()) && Objects
+            .equal(this.getKey(), that.getKey());
+    }
+
+    @Override public int hashCode() {
+        return Objects.hashCode(this.getNamespace(), this.getKey());
+    }
+
 }

Core/src/main/java/com/plotsquared/core/util/ChunkUtil.java

@@ -1,3 +1,28 @@
+/*
+ *       _____  _       _    _____                                _
+ *      |  __ \| |     | |  / ____|                              | |
+ *      | |__) | | ___ | |_| (___   __ _ _   _  __ _ _ __ ___  __| |
+ *      |  ___/| |/ _ \| __|\___ \ / _` | | | |/ _` | '__/ _ \/ _` |
+ *      | |    | | (_) | |_ ____) | (_| | |_| | (_| | | |  __/ (_| |
+ *      |_|    |_|\___/ \__|_____/ \__, |\__,_|\__,_|_|  \___|\__,_|
+ *                                    | |
+ *                                    |_|
+ *            PlotSquared plot management system for Minecraft
+ *                  Copyright (C) 2020 IntellectualSites
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package com.plotsquared.core.util;
 
 /**