Added byte array serialization/deserialization for PersistentDataContainers (#7505)

patches/api/0393-Added-byte-array-serialization-deserialization-for-P.patch

@@ -0,0 +1,50 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Nex <nex@bits.team>
+Date: Thu, 24 Feb 2022 16:28:08 +0100
+Subject: [PATCH] Added byte array serialization/deserialization for
+ PersistentDataContainers
+
+
+diff --git a/src/main/java/org/bukkit/persistence/PersistentDataContainer.java b/src/main/java/org/bukkit/persistence/PersistentDataContainer.java
+index eebb3da156e2d95efbe22d4afa470b977ce19f10..d30ad7cae1dfbb47ab1a6e3e2fcd6fb76163fe78 100644
+--- a/src/main/java/org/bukkit/persistence/PersistentDataContainer.java
++++ b/src/main/java/org/bukkit/persistence/PersistentDataContainer.java
+@@ -164,5 +164,38 @@ public interface PersistentDataContainer {
+      * @throws NullPointerException if the key to look up is null
+      */
+     boolean has(@NotNull NamespacedKey key);
++
++    /**
++     * Serialize this {@link PersistentDataContainer} instance to a
++     * byte array.
++     *
++     * @return a binary represenation of this container
++     * @throws java.io.IOException if we fail to write this container to a byte array
++     */
++    byte @NotNull [] serializeToBytes() throws java.io.IOException;
++
++    /**
++     * Read values from a serialised byte array into this
++     * {@link PersistentDataContainer} instance.
++     *
++     * @param bytes the byte array to read from
++     * @param clear if true, this {@link PersistentDataContainer} instance
++     *              will be cleared before reading
++     * @throws java.io.IOException if the byte array has an invalid format
++     */
++    void readFromBytes(byte @NotNull [] bytes, boolean clear) throws java.io.IOException;
++
++    /**
++     * Read values from a serialised byte array into this
++     * {@link PersistentDataContainer} instance.
++     * This method has the same effect as
++     * <code>PersistentDataContainer#readFromBytes(bytes, true)</code>
++     *
++     * @param bytes the byte array to read from
++     * @throws java.io.IOException if the byte array has an invalid format
++     */
++    default void readFromBytes(byte @NotNull [] bytes) throws java.io.IOException {
++        this.readFromBytes(bytes, true);
++    }
+     // Paper end
+ }

patches/server/0942-Added-byte-array-serialization-deserialization-for-P.patch

@@ -0,0 +1,38 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Nex <nex@bits.team>
+Date: Thu, 24 Feb 2022 16:28:07 +0100
+Subject: [PATCH] Added byte array serialization/deserialization for
+ PersistentDataContainers
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataContainer.java b/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataContainer.java
+index f0588bec9be09cb8273c310fb3de8bfe72dee9e5..20c7144307ecf1eb5c600f3b84df7bc15fa941d6 100644
+--- a/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataContainer.java
++++ b/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataContainer.java
+@@ -168,5 +168,26 @@ public class CraftPersistentDataContainer implements PersistentDataContainer {
+ 
+         return this.customDataTags.containsKey(key.toString());
+     }
++
++    @Override
++    public byte[] serializeToBytes() throws java.io.IOException {
++        net.minecraft.nbt.CompoundTag root = this.toTagCompound();
++        java.io.ByteArrayOutputStream byteArrayOutput = new java.io.ByteArrayOutputStream();
++        try (java.io.DataOutputStream dataOutput = new java.io.DataOutputStream(byteArrayOutput)) {
++            net.minecraft.nbt.NbtIo.write(root, dataOutput);
++            return byteArrayOutput.toByteArray();
++        }
++    }
++
++    @Override
++    public void readFromBytes(byte[] bytes, boolean clear) throws java.io.IOException {
++        if (clear) {
++            this.clear();
++        }
++        try (java.io.DataInputStream dataInput = new java.io.DataInputStream(new java.io.ByteArrayInputStream(bytes))) {
++            net.minecraft.nbt.CompoundTag compound = net.minecraft.nbt.NbtIo.read(dataInput);
++            this.putAll(compound);
++        }
++    }
+     // Paper end
+ }