Add optional prefix value to plugin.yml. Addresses BUKKIT-838

By: Aidan Matzko <amatzko48@gmail.com>

paper-api/src/main/java/org/bukkit/plugin/PluginDescriptionFile.java

@@ -30,6 +30,7 @@ public final class PluginDescriptionFile {
     private String description = null;
     private List<String> authors = null;
     private String website = null;
+    private String prefix = null;
     private boolean database = false;
     private PluginLoadOrder order = PluginLoadOrder.POSTWORLD;
     private List<Permission> permissions = null;
@@ -159,6 +160,10 @@ public final class PluginDescriptionFile {
     public String getClassLoaderOf() {
         return classLoaderOf;
     }
+    
+    public String getPrefix() {
+        return prefix;
+    }
 
     private void loadMap(Map<?, ?> map) throws InvalidDescriptionException {
         try {
@@ -311,6 +316,9 @@ public final class PluginDescriptionFile {
         } else {
             permissions = ImmutableList.<Permission>of();
         }
+        if (map.containsKey("prefix")) {
+            prefix = map.get("prefix").toString();
+        }
     }
 
     private Map<String, Object> saveMap() {
@@ -348,6 +356,10 @@ public final class PluginDescriptionFile {
         if (classLoaderOf != null) {
             map.put("class-loader-of", classLoaderOf);
         }
+        
+        if (prefix != null) {
+            map.put("prefix", prefix);
+        }
 
         return map;
     }

paper-api/src/main/java/org/bukkit/plugin/PluginLogger.java

@@ -11,7 +11,6 @@ import java.util.logging.Logger;
  * The API for PluginLogger is exactly the same as {@link java.util.logging.Logger}.
  */
 public class PluginLogger extends Logger {
-
     private String pluginName;
 
     /**
@@ -20,7 +19,8 @@ public class PluginLogger extends Logger {
      */
     public PluginLogger(Plugin context) {
         super(context.getClass().getCanonicalName(), null);
-        pluginName = "[" + context.getDescription().getName() + "] ";
+        String prefix = context.getDescription().getPrefix();
+        pluginName = prefix != null ? new StringBuilder().append("[").append(prefix).append("] ").toString() : "[" + context.getDescription().getName() + "] ";
         setParent(context.getServer().getLogger());
         setLevel(Level.ALL);
     }