reupload

src/main/java/com/loohp/limbo/utils/DeclareCommands.java

@@ -0,0 +1,56 @@
+package com.loohp.limbo.utils;
+
+import java.io.ByteArrayOutputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.util.List;
+
+import com.loohp.limbo.Limbo;
+import com.loohp.limbo.server.packets.PacketPlayOutDeclareCommands;
+import com.loohp.limbo.commands.CommandSender;
+
+public class DeclareCommands {
+	
+	public static PacketPlayOutDeclareCommands getDeclareCommandsPacket(CommandSender sender) throws IOException {
+		List<String> commands = Limbo.getInstance().getPluginManager().getTabOptions(sender, new String[0]);
+		
+		if (commands.isEmpty()) {
+			return null;
+		}
+		
+		ByteArrayOutputStream buffer = new ByteArrayOutputStream();		
+		DataOutputStream output = new DataOutputStream(buffer);
+
+		DataTypeIO.writeVarInt(output, commands.size() * 2 + 1);
+		
+		output.writeByte(0);
+		DataTypeIO.writeVarInt(output, commands.size());
+		for (int i = 1; i <= commands.size() * 2; i++) {
+			DataTypeIO.writeVarInt(output, i++);
+		}
+		
+		int i = 1;
+		for (String label : commands) {
+			output.writeByte(1 | 0x04);
+			DataTypeIO.writeVarInt(output, 1);
+			DataTypeIO.writeVarInt(output, i + 1);
+			DataTypeIO.writeString(output, label, StandardCharsets.UTF_8);
+			i++;
+			
+			output.writeByte(2 | 0x04 | 0x10);
+			DataTypeIO.writeVarInt(output, 1);
+			DataTypeIO.writeVarInt(output, i);
+			DataTypeIO.writeString(output, "arg", StandardCharsets.UTF_8);
+			DataTypeIO.writeString(output, "brigadier:string", StandardCharsets.UTF_8);
+			DataTypeIO.writeVarInt(output, 0);
+			DataTypeIO.writeString(output, "minecraft:ask_server", StandardCharsets.UTF_8);
+			i++;
+		}
+		
+		DataTypeIO.writeVarInt(output, 0);
+		
+		return new PacketPlayOutDeclareCommands(buffer.toByteArray());
+	}
+
+}