85 lines
3.2 KiB
Java
85 lines
3.2 KiB
Java
/*
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* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
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* Copyright (C) 2016-2023 ViaVersion and contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package com.viaversion.viaversion.api.type.types.misc;
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import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
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import com.github.steveice10.opennbt.tag.builtin.Tag;
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import com.github.steveice10.opennbt.tag.limiter.TagLimiter;
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import com.viaversion.viaversion.api.type.Type;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.ByteBufInputStream;
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import io.netty.buffer.ByteBufOutputStream;
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import java.io.IOException;
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import org.checkerframework.checker.nullness.qual.Nullable;
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public class NamedCompoundTagType extends Type<CompoundTag> {
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public static final int MAX_NBT_BYTES = 2097152; // 2mb
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public static final int MAX_NESTING_LEVEL = 512;
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public NamedCompoundTagType() {
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super(CompoundTag.class);
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}
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@Override
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public CompoundTag read(final ByteBuf buffer) throws IOException {
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return read(buffer, true);
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}
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@Override
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public void write(final ByteBuf buffer, final CompoundTag object) throws IOException {
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write(buffer, object, "");
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}
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public static CompoundTag read(final ByteBuf buffer, final boolean readName) throws IOException {
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final byte id = buffer.readByte();
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if (id == 0) {
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return null;
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}
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if (id != CompoundTag.ID) {
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throw new IOException(String.format("Expected root tag to be a CompoundTag, was %s", id));
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}
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if (readName) {
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buffer.skipBytes(buffer.readUnsignedShort());
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}
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final TagLimiter tagLimiter = TagLimiter.create(MAX_NBT_BYTES, MAX_NESTING_LEVEL);
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return CompoundTag.read(new ByteBufInputStream(buffer), tagLimiter, 0);
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}
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public static void write(final ByteBuf buffer, final Tag tag, final @Nullable String name) throws IOException {
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if (tag == null) {
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buffer.writeByte(0);
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return;
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}
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final ByteBufOutputStream out = new ByteBufOutputStream(buffer);
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out.writeByte(tag.getTagId());
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if (name != null) {
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out.writeUTF(name);
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}
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tag.write(out);
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}
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}
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