Command executor

commander/build.gradle

@@ -0,0 +1,7 @@
+group 'mc'
+version '1.0-SNAPSHOT'
+
+dependencies {
+    /* Core */
+    compile_excludeCopy project(':core')
+}

commander/src/main/java/mc/commander/CommandExecutor.java

@@ -0,0 +1,11 @@
+/*
+ * DmitriyMX <dimon550@gmail.com>
+ * 2018-05-22
+ */
+package mc.commander;
+
+import mc.core.player.Player;
+
+public interface CommandExecutor {
+    void execute(Player sender, String command, String... args);
+}

commander/src/main/java/mc/commander/Commander.java

@@ -0,0 +1,44 @@
+/*
+ * DmitriyMX <dimon550@gmail.com>
+ * 2018-05-22
+ */
+package mc.commander;
+
+import lombok.extern.slf4j.Slf4j;
+import mc.core.chat.ChatStyle;
+import mc.core.chat.SimpleChatProcessor;
+import mc.core.player.Player;
+import org.slf4j.Marker;
+import org.slf4j.helpers.BasicMarkerFactory;
+
+import java.util.Collections;
+import java.util.Map;
+
+@Slf4j
+public class Commander extends SimpleChatProcessor {
+    private static final Marker COMMAND_MARKER = new BasicMarkerFactory().getMarker("Command");
+    private static final String UNKNOW_COMMAND_MSG = ChatStyle.RED + "Unknown command \"" + ChatStyle.WHITE + "%s" + ChatStyle.RED + "\"";
+    private Map<String, CommandExecutor> commands = Collections.emptyMap();
+
+    @Override
+    public void process(Player player, String message) {
+        if (message.startsWith("/")) {
+            log.info(COMMAND_MARKER, "<{}> {}", player.getName(), message);
+
+            int idx = message.indexOf(' ');
+            if (idx == -1) {
+                idx = message.length();
+            }
+
+            String command = message.substring(1, idx).toLowerCase();
+            if (commands.containsKey(command)) {
+                String[] args = message.substring(idx).split(" ");
+                commands.get(command).execute(player, command, args);
+            } else {
+                player.getChannel().sendChatMessage(String.format(UNKNOW_COMMAND_MSG, command));
+            }
+        } else {
+            super.process(player, message);
+        }
+    }
+}

settings.gradle

@@ -4,3 +4,4 @@ include('core') // Core
 include('proto125') // Protocol 1.2.5
 include('proto125_netty') // Protocol 1.2.5 (Netty impl.)
 include('flat_world')
+include('commander')