private byte[] Decompress(BinaryReader reader, uint compressedSize, uint uncompressedSize, Header header) { bool chunked = (header.Version >= FileVersion.VerChunkedCompress); byte[] compressed = reader.ReadBytes((int)compressedSize); return(BinUtils.Decompress(compressed, (int)uncompressedSize, header.CompressionFlags, chunked)); }
public StoryDebugInfo Load(byte[] msgPayload) { UInt32 decompressedSize; byte[] lengthBuf = new byte[4]; Array.Copy(msgPayload, msgPayload.Length - 4, lengthBuf, 0, 4); using (var ms = new MemoryStream(lengthBuf)) using (var reader = new BinaryReader(ms, Encoding.UTF8, true)) { decompressedSize = reader.ReadUInt32(); } var compressed = new byte[msgPayload.Length - 4]; Array.Copy(msgPayload, 0, compressed, 0, msgPayload.Length - 4); byte flags = BinUtils.MakeCompressionFlags(LSLib.LS.Enums.CompressionMethod.LZ4, LSLib.LS.Enums.CompressionLevel.FastCompression); byte[] decompressed = BinUtils.Decompress(compressed, (int)decompressedSize, flags); var msg = StoryDebugInfoMsg.Parser.ParseFrom(decompressed); var debugInfo = FromProtobuf(msg); return(debugInfo); }
public Resource Read() { using (var reader = new BinaryReader(Stream)) { var hdr = BinUtils.ReadStruct <Header>(reader); if (hdr.Magic != BitConverter.ToUInt32(Header.Signature, 0)) { var msg = String.Format( "Invalid LSF signature; expected {0,8:X}, got {1,8:X}", BitConverter.ToUInt32(Header.Signature, 0), hdr.Magic ); throw new InvalidDataException(msg); } if (hdr.Version < FileVersion.VerInitial || hdr.Version > FileVersion.CurrentVersion) { var msg = String.Format("LSF version {0} is not supported", hdr.Version); throw new InvalidDataException(msg); } bool isCompressed = BinUtils.CompressionFlagsToMethod(hdr.CompressionFlags) != CompressionMethod.None; if (hdr.StringsSizeOnDisk > 0 || hdr.StringsUncompressedSize > 0) { uint onDiskSize = isCompressed ? hdr.StringsSizeOnDisk : hdr.StringsUncompressedSize; byte[] compressed = reader.ReadBytes((int)onDiskSize); byte[] uncompressed; if (isCompressed) { uncompressed = BinUtils.Decompress(compressed, (int)hdr.StringsUncompressedSize, hdr.CompressionFlags); } else { uncompressed = compressed; } using (var namesStream = new MemoryStream(uncompressed)) { ReadNames(namesStream); } } if (hdr.NodesSizeOnDisk > 0 || hdr.NodesUncompressedSize > 0) { uint onDiskSize = isCompressed ? hdr.NodesSizeOnDisk : hdr.NodesUncompressedSize; var uncompressed = Decompress(reader, onDiskSize, hdr.NodesUncompressedSize, hdr); #if DEBUG_LSF_SERIALIZATION using (var nodesFile = new FileStream("nodes.bin", FileMode.Create, FileAccess.Write)) { nodesFile.Write(uncompressed, 0, uncompressed.Length); } #endif using (var nodesStream = new MemoryStream(uncompressed)) { var longNodes = hdr.Version >= FileVersion.VerExtendedNodes && hdr.Extended == 1; ReadNodes(nodesStream, longNodes); } } if (hdr.AttributesSizeOnDisk > 0 || hdr.AttributesUncompressedSize > 0) { uint onDiskSize = isCompressed ? hdr.AttributesSizeOnDisk : hdr.AttributesUncompressedSize; var uncompressed = Decompress(reader, onDiskSize, hdr.AttributesUncompressedSize, hdr); #if DEBUG_LSF_SERIALIZATION using (var attributesFile = new FileStream("attributes.bin", FileMode.Create, FileAccess.Write)) { attributesFile.Write(uncompressed, 0, uncompressed.Length); } #endif using (var attributesStream = new MemoryStream(uncompressed)) { var longAttributes = hdr.Version >= FileVersion.VerExtendedNodes && hdr.Extended == 1; ReadAttributes(attributesStream, longAttributes); } } if (hdr.ValuesSizeOnDisk > 0 || hdr.ValuesUncompressedSize > 0) { uint onDiskSize = isCompressed ? hdr.ValuesSizeOnDisk : hdr.ValuesUncompressedSize; var uncompressed = Decompress(reader, onDiskSize, hdr.ValuesUncompressedSize, hdr); var valueStream = new MemoryStream(uncompressed); this.Values = valueStream; #if DEBUG_LSF_SERIALIZATION using (var valuesFile = new FileStream("values.bin", FileMode.Create, FileAccess.Write)) { valuesFile.Write(uncompressed, 0, uncompressed.Length); } #endif } else { this.Values = new MemoryStream(); } Resource resource = new Resource(); ReadRegions(resource); resource.Metadata.majorVersion = (hdr.EngineVersion & 0xff000000) >> 24; resource.Metadata.minorVersion = (hdr.EngineVersion & 0xff0000) >> 16; resource.Metadata.revision = (hdr.EngineVersion & 0xff00) >> 8; resource.Metadata.buildNumber = (hdr.EngineVersion & 0xff); return(resource); } }