58 lines
1.5 KiB
C#
58 lines
1.5 KiB
C#
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using System;
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using System.IO;
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using System.Text;
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using LZ4;
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namespace Roblox.BinaryFormat
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{
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public class RobloxBinaryChunk
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{
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public readonly string ChunkType;
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public readonly int CompressedSize;
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public readonly byte[] CompressedData;
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public readonly int Size;
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public readonly int Reserved;
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public readonly byte[] Data;
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public bool HasCompressedData => (CompressedSize > 0);
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public override string ToString()
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{
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return ChunkType + " Chunk [" + Size + ']';
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}
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public RobloxBinaryReader GetReader(string chunkType)
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{
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if (ChunkType == chunkType)
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{
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MemoryStream buffer = new MemoryStream(Data);
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return new RobloxBinaryReader(buffer);
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}
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throw new Exception("Expected " + chunkType + " ChunkType from the input RobloxBinaryChunk");
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}
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public RobloxBinaryChunk(RobloxBinaryReader reader)
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{
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byte[] bChunkType = reader.ReadBytes(4);
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ChunkType = Encoding.ASCII.GetString(bChunkType);
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CompressedSize = reader.ReadInt32();
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Size = reader.ReadInt32();
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Reserved = reader.ReadInt32();
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if (HasCompressedData)
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{
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CompressedData = reader.ReadBytes(CompressedSize);
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Data = LZ4Codec.Decode(CompressedData, 0, CompressedSize, Size);
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}
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else
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{
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Data = reader.ReadBytes(Size);
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}
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}
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}
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}
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