Initial Commit

src/main/java/emu/nebula/net/NetMsgIdUtils.java

@@ -0,0 +1,55 @@
+package emu.nebula.net;
+
+import java.io.FileWriter;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.util.Map;
+import java.util.TreeMap;
+import java.util.stream.Collectors;
+
+import emu.nebula.GameConstants;
+import emu.nebula.Nebula;
+import emu.nebula.util.JsonUtils;
+import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+
+public class NetMsgIdUtils {
+
+    private static Int2ObjectMap<String> msgIdMap;
+
+    static {
+        msgIdMap = new Int2ObjectOpenHashMap<>();
+
+        Field[] fields = NetMsgId.class.getFields();
+
+        for (Field f : fields) {
+            if (f.getType().equals(int.class)) {
+                try {
+                    msgIdMap.put(f.getInt(null), f.getName());
+                } catch (Exception e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
+
+    public static String getMsgIdName(int msgId) {
+        if (msgId <= 0) return "UNKNOWN";
+        return msgIdMap.getOrDefault(msgId, "UNKNOWN");
+    }
+
+    @SuppressWarnings("unused")
+    public static void dumpPacketIds() {
+        try (FileWriter writer = new FileWriter("./MsgIds_" + GameConstants.VERSION + ".json")) {
+            // Create sorted tree map
+            Map<Integer, String> packetIds = msgIdMap.int2ObjectEntrySet().stream()
+                    .filter(e -> e.getIntKey() > 0)
+                    .collect(Collectors.toMap(Int2ObjectMap.Entry::getIntKey, Int2ObjectMap.Entry::getValue, (k, v) -> v, TreeMap::new));
+            // Write to file
+            writer.write(JsonUtils.encode(packetIds));
+            Nebula.getLogger().info("Dumped packet ids.");
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}