400 lines
14 KiB
C#
400 lines
14 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text.RegularExpressions;
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namespace AssetStudio
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{
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public class SerializedFile
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{
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public AssetsManager assetsManager;
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public EndianBinaryReader reader;
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public string fullName;
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public string originalPath;
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public string fileName;
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public int[] version = { 0, 0, 0, 0 };
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public BuildType buildType;
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public List<Object> Objects;
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public Dictionary<long, Object> ObjectsDic;
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public SerializedFileHeader header;
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private EndianType m_FileEndianess;
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public string unityVersion = "2.5.0f5";
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public BuildTarget m_TargetPlatform = BuildTarget.UnknownPlatform;
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private bool m_EnableTypeTree = true;
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public List<SerializedType> m_Types;
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public List<SerializedType> m_RefTypes;
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public List<ObjectInfo> m_Objects;
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private List<LocalSerializedObjectIdentifier> m_ScriptTypes;
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public List<FileIdentifier> m_Externals;
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public SerializedFile(AssetsManager assetsManager, string fullName, EndianBinaryReader reader)
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{
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this.assetsManager = assetsManager;
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this.reader = reader;
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this.fullName = fullName;
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fileName = Path.GetFileName(fullName);
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//ReadHeader
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header = new SerializedFileHeader();
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header.m_MetadataSize = reader.ReadUInt32();
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header.m_FileSize = reader.ReadUInt32();
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header.m_Version = reader.ReadUInt32();
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header.m_DataOffset = reader.ReadUInt32();
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if (header.m_Version >= 9)
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{
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header.m_Endianess = reader.ReadByte();
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header.m_Reserved = reader.ReadBytes(3);
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m_FileEndianess = (EndianType)header.m_Endianess;
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}
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else
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{
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reader.Position = header.m_FileSize - header.m_MetadataSize;
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m_FileEndianess = (EndianType)reader.ReadByte();
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}
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if (header.m_Version >= 22)
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{
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header.m_MetadataSize = reader.ReadUInt32();
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header.m_FileSize = reader.ReadInt64();
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header.m_DataOffset = reader.ReadInt64();
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reader.ReadInt64(); // unknown
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}
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//ReadMetadata
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if (m_FileEndianess == EndianType.LittleEndian)
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{
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reader.endian = EndianType.LittleEndian;
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}
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if (header.m_Version >= 7)
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{
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unityVersion = reader.ReadStringToNull();
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SetVersion(unityVersion);
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}
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if (header.m_Version >= 8)
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{
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m_TargetPlatform = (BuildTarget)reader.ReadInt32();
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if (!Enum.IsDefined(typeof(BuildTarget), m_TargetPlatform))
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{
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m_TargetPlatform = BuildTarget.UnknownPlatform;
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}
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}
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if (header.m_Version >= 13)
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{
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m_EnableTypeTree = reader.ReadBoolean();
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}
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//ReadTypes
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int typeCount = reader.ReadInt32();
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m_Types = new List<SerializedType>(typeCount);
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for (int i = 0; i < typeCount; i++)
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{
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m_Types.Add(ReadSerializedType());
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}
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var bigIDEnabled = 0;
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if (header.m_Version >= 7 && header.m_Version < 14)
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{
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bigIDEnabled = reader.ReadInt32();
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}
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//ReadObjects
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int objectCount = reader.ReadInt32();
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m_Objects = new List<ObjectInfo>(objectCount);
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Objects = new List<Object>(objectCount);
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ObjectsDic = new Dictionary<long, Object>(objectCount);
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for (int i = 0; i < objectCount; i++)
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{
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var objectInfo = new ObjectInfo();
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if (bigIDEnabled != 0)
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{
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objectInfo.m_PathID = reader.ReadInt64();
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}
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else if (header.m_Version < 14)
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{
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objectInfo.m_PathID = reader.ReadInt32();
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}
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else
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{
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reader.AlignStream();
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objectInfo.m_PathID = reader.ReadInt64();
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}
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if (header.m_Version >= 22)
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objectInfo.byteStart = reader.ReadInt64();
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else
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objectInfo.byteStart = reader.ReadUInt32();
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objectInfo.byteStart += header.m_DataOffset;
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objectInfo.byteSize = reader.ReadUInt32();
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objectInfo.typeID = reader.ReadInt32();
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if (header.m_Version < 16)
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{
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objectInfo.classID = reader.ReadUInt16();
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objectInfo.serializedType = m_Types.Find(x => x.classID == objectInfo.typeID);
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}
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else
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{
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var type = m_Types[objectInfo.typeID];
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objectInfo.serializedType = type;
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objectInfo.classID = type.classID;
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}
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if (header.m_Version < 11)
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{
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var isDestroyed = reader.ReadUInt16();
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}
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if (header.m_Version >= 11 && header.m_Version < 17)
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{
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var m_ScriptTypeIndex = reader.ReadInt16();
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if (objectInfo.serializedType != null)
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objectInfo.serializedType.m_ScriptTypeIndex = m_ScriptTypeIndex;
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}
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if (header.m_Version == 15 || header.m_Version == 16)
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{
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var stripped = reader.ReadByte();
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}
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m_Objects.Add(objectInfo);
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}
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if (header.m_Version >= 11)
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{
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int scriptCount = reader.ReadInt32();
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m_ScriptTypes = new List<LocalSerializedObjectIdentifier>(scriptCount);
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for (int i = 0; i < scriptCount; i++)
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{
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var m_ScriptType = new LocalSerializedObjectIdentifier();
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m_ScriptType.localSerializedFileIndex = reader.ReadInt32();
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if (header.m_Version < 14)
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{
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m_ScriptType.localIdentifierInFile = reader.ReadInt32();
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}
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else
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{
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reader.AlignStream();
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m_ScriptType.localIdentifierInFile = reader.ReadInt64();
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}
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m_ScriptTypes.Add(m_ScriptType);
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}
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}
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int externalsCount = reader.ReadInt32();
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m_Externals = new List<FileIdentifier>(externalsCount);
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for (int i = 0; i < externalsCount; i++)
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{
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var m_External = new FileIdentifier();
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if (header.m_Version >= 6)
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{
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var tempEmpty = reader.ReadStringToNull();
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}
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if (header.m_Version >= 5)
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{
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m_External.guid = new Guid(reader.ReadBytes(16));
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m_External.type = reader.ReadInt32();
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}
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m_External.pathName = reader.ReadStringToNull();
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m_External.fileName = Path.GetFileName(m_External.pathName);
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m_Externals.Add(m_External);
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}
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if (header.m_Version >= 20)
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{
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int refTypesCount = reader.ReadInt32();
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m_RefTypes = new List<SerializedType>(refTypesCount);
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for (int i = 0; i < refTypesCount; i++)
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{
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m_RefTypes.Add(ReadSerializedType());
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}
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}
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if (header.m_Version >= 5)
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{
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var userInformation = reader.ReadStringToNull();
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}
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//reader.AlignStream(16);
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}
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public void SetVersion(string stringVersion)
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{
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unityVersion = stringVersion;
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var buildSplit = Regex.Replace(stringVersion, @"\d", "").Split(new[] { "." }, StringSplitOptions.RemoveEmptyEntries);
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buildType = new BuildType(buildSplit[0]);
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var versionSplit = Regex.Replace(stringVersion, @"\D", ".").Split(new[] { "." }, StringSplitOptions.RemoveEmptyEntries);
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version = versionSplit.Select(int.Parse).ToArray();
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}
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private SerializedType ReadSerializedType()
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{
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var type = new SerializedType();
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type.classID = reader.ReadInt32();
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if (header.m_Version >= 16)
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{
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type.m_IsStrippedType = reader.ReadBoolean();
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}
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if (header.m_Version >= 17)
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{
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type.m_ScriptTypeIndex = reader.ReadInt16();
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}
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if (header.m_Version >= 13)
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{
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if ((header.m_Version < 16 && type.classID < 0) || (header.m_Version >= 16 && type.classID == 114))
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{
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type.m_ScriptID = reader.ReadBytes(16); //Hash128
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}
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type.m_OldTypeHash = reader.ReadBytes(16); //Hash128
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}
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if (m_EnableTypeTree)
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{
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var typeTree = new List<TypeTreeNode>();
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if (header.m_Version >= 12 || header.m_Version == 10)
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{
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TypeTreeBlobRead(typeTree);
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}
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else
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{
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ReadTypeTree(typeTree);
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}
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if (header.m_Version >= 21)
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{
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type.m_TypeDependencies = reader.ReadInt32Array();
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}
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type.m_Nodes = typeTree;
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}
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return type;
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}
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private void ReadTypeTree(List<TypeTreeNode> typeTree, int level = 0)
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{
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var typeTreeNode = new TypeTreeNode();
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typeTree.Add(typeTreeNode);
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typeTreeNode.m_Level = level;
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typeTreeNode.m_Type = reader.ReadStringToNull();
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typeTreeNode.m_Name = reader.ReadStringToNull();
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typeTreeNode.m_ByteSize = reader.ReadInt32();
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if (header.m_Version == 2)
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{
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var variableCount = reader.ReadInt32();
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}
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if (header.m_Version != 3)
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{
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typeTreeNode.m_Index = reader.ReadInt32();
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}
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typeTreeNode.m_IsArray = reader.ReadInt32();
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typeTreeNode.m_Version = reader.ReadInt32();
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if (header.m_Version != 3)
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{
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typeTreeNode.m_MetaFlag = reader.ReadInt32();
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}
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int childrenCount = reader.ReadInt32();
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for (int i = 0; i < childrenCount; i++)
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{
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ReadTypeTree(typeTree, level + 1);
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}
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}
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private void TypeTreeBlobRead(List<TypeTreeNode> typeTree)
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{
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int numberOfNodes = reader.ReadInt32();
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int stringBufferSize = reader.ReadInt32();
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for (int i = 0; i < numberOfNodes; i++)
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{
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var typeTreeNode = new TypeTreeNode();
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typeTree.Add(typeTreeNode);
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typeTreeNode.m_Version = reader.ReadUInt16();
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typeTreeNode.m_Level = reader.ReadByte();
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typeTreeNode.m_IsArray = reader.ReadBoolean() ? 1 : 0;
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typeTreeNode.m_TypeStrOffset = reader.ReadUInt32();
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typeTreeNode.m_NameStrOffset = reader.ReadUInt32();
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typeTreeNode.m_ByteSize = reader.ReadInt32();
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typeTreeNode.m_Index = reader.ReadInt32();
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typeTreeNode.m_MetaFlag = reader.ReadInt32();
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if (header.m_Version >= 19)
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{
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typeTreeNode.m_RefTypeHash = reader.ReadUInt64();
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}
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}
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var m_StringBuffer = reader.ReadBytes(stringBufferSize);
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using (var stringBufferReader = new BinaryReader(new MemoryStream(m_StringBuffer)))
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{
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for (int i = 0; i < numberOfNodes; i++)
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{
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var typeTreeNode = typeTree[i];
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typeTreeNode.m_Type = ReadString(stringBufferReader, typeTreeNode.m_TypeStrOffset);
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typeTreeNode.m_Name = ReadString(stringBufferReader, typeTreeNode.m_NameStrOffset);
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}
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}
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string ReadString(BinaryReader stringBufferReader, uint value)
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{
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var isOffset = (value & 0x80000000) == 0;
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if (isOffset)
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{
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stringBufferReader.BaseStream.Position = value;
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return stringBufferReader.ReadStringToNull();
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}
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var offset = value & 0x7FFFFFFF;
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if (CommonString.StringBuffer.TryGetValue(offset, out var str))
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{
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return str;
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}
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return offset.ToString();
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}
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}
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public void AddObject(Object obj)
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{
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Objects.Add(obj);
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ObjectsDic.Add(obj.m_PathID, obj);
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}
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public static bool IsSerializedFile(EndianBinaryReader reader)
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{
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var fileSize = reader.BaseStream.Length;
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if (fileSize < 20)
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{
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return false;
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}
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var m_MetadataSize = reader.ReadUInt32();
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long m_FileSize = reader.ReadUInt32();
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var m_Version = reader.ReadUInt32();
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long m_DataOffset = reader.ReadUInt32();
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var m_Endianess = reader.ReadByte();
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var m_Reserved = reader.ReadBytes(3);
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if (m_Version >= 22)
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{
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if (fileSize < 48)
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{
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return false;
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}
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m_MetadataSize = reader.ReadUInt32();
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m_FileSize = reader.ReadInt64();
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m_DataOffset = reader.ReadInt64();
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}
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if (m_FileSize != fileSize)
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{
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reader.Position = 0;
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return false;
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}
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if (m_DataOffset > fileSize)
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{
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reader.Position = 0;
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return false;
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}
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reader.Position = 0;
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return true;
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}
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}
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}
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