public bool Read(AssetsFileReader reader, bool prefReplacersInMemory = false)
{
reader.bigEndian = false;
magic = reader.ReadStringLength(4);
if (magic != "EMIP")
{
return(false);
}
includesCldb = reader.ReadByte() != 0;
modName = reader.ReadCountStringInt16();
modCreators = reader.ReadCountStringInt16();
modDescription = reader.ReadCountStringInt16();
if (includesCldb)
{
addedTypes = new ClassDatabaseFile();
addedTypes.Read(reader);
//get past the string table since the reader goes back to the beginning
reader.Position = addedTypes.header.stringTablePos + addedTypes.header.stringTableLen;
}
else
{
addedTypes = null;
}
int affectedFilesCount = reader.ReadInt32();
affectedFiles = new List <InstallerPackageAssetsDesc>();
for (int i = 0; i < affectedFilesCount; i++)
{
List <object> replacers = new List <object>();
InstallerPackageAssetsDesc desc = new InstallerPackageAssetsDesc()
{
isBundle = reader.ReadByte() != 0,
path = reader.ReadCountStringInt16()
};
int replacerCount = reader.ReadInt32();
for (int j = 0; j < replacerCount; j++)
{
object repObj = ParseReplacer(reader, prefReplacersInMemory);
if (repObj is AssetsReplacer repAsset)
{
replacers.Add(repAsset);
}
else if (repObj is BundleReplacer repBundle)
{
replacers.Add(repBundle);
}
}
desc.replacers = replacers;
affectedFiles.Add(desc);
}
return(true);
}
public void LoadClassFile(Stream stream)
{
classFile = stream;
initialClassFile = new ClassDatabaseFile();
initialClassFile.Read(new AssetsFileReader(stream));
}
public ClassDatabaseFile LoadClassDatabase(Stream stream)
{
classFile = new ClassDatabaseFile();
classFile.Read(new AssetsFileReader(stream));
return(classFile);
}
private static object ParseReplacer(AssetsFileReader reader, bool prefReplacersInMemory)
{
short replacerType = reader.ReadInt16();
byte fileType = reader.ReadByte();
if (fileType == 0) //BundleReplacer
{
string oldName = reader.ReadCountStringInt16();
string newName = reader.ReadCountStringInt16();
bool hasSerializedData = reader.ReadByte() != 0; //guess
long replacerCount = reader.ReadInt64();
List <AssetsReplacer> replacers = new List <AssetsReplacer>();
for (int i = 0; i < replacerCount; i++)
{
AssetsReplacer assetReplacer = (AssetsReplacer)ParseReplacer(reader, prefReplacersInMemory);
replacers.Add(assetReplacer);
}
if (replacerType == 4) //BundleReplacerFromAssets
{
//we have to null the assetsfile here and call init later
BundleReplacer replacer = new BundleReplacerFromAssets(oldName, newName, null, replacers, 0);
return(replacer);
}
}
else if (fileType == 1) //AssetsReplacer
{
byte unknown01 = reader.ReadByte(); //always 1
int fileId = reader.ReadInt32();
long pathId = reader.ReadInt64();
int classId = reader.ReadInt32();
ushort monoScriptIndex = reader.ReadUInt16();
List <AssetPPtr> preloadDependencies = new List <AssetPPtr>();
int preloadDependencyCount = reader.ReadInt32();
for (int i = 0; i < preloadDependencyCount; i++)
{
AssetPPtr pptr = new AssetPPtr(reader.ReadInt32(), reader.ReadInt64());
preloadDependencies.Add(pptr);
}
if (replacerType == 0) //remover
{
AssetsReplacer replacer = new AssetsRemover(fileId, pathId, classId, monoScriptIndex);
if (preloadDependencyCount != 0)
{
replacer.SetPreloadDependencies(preloadDependencies);
}
return(replacer);
}
else if (replacerType == 2) //adder/replacer?
{
Hash128? propertiesHash = null;
Hash128? scriptHash = null;
ClassDatabaseFile?classData = null;
AssetsReplacer replacer;
bool flag1 = reader.ReadByte() != 0; //no idea, couldn't get it to be 1
if (flag1)
{
throw new NotSupportedException("you just found a file with the mysterious flag1 set, send the file to nes");
}
bool flag2 = reader.ReadByte() != 0; //has properties hash
if (flag2)
{
propertiesHash = new Hash128(reader);
}
bool flag3 = reader.ReadByte() != 0; //has script hash
if (flag3)
{
scriptHash = new Hash128(reader);
}
bool flag4 = reader.ReadByte() != 0; //has cldb
if (flag4)
{
classData = new ClassDatabaseFile();
classData.Read(reader);
}
long bufLength = reader.ReadInt64();
if (prefReplacersInMemory)
{
byte[] buf = reader.ReadBytes((int)bufLength);
replacer = new AssetsReplacerFromMemory(fileId, pathId, classId, monoScriptIndex, buf);
}
else
{
replacer = new AssetsReplacerFromStream(fileId, pathId, classId, monoScriptIndex, reader.BaseStream, reader.Position, bufLength);
}
if (propertiesHash != null)
{
replacer.SetPropertiesHash(propertiesHash.Value);
}
if (scriptHash != null)
{
replacer.SetScriptIDHash(scriptHash.Value);
}
if (scriptHash != null)
{
replacer.SetTypeInfo(classData, null, false); //idk what the last two are supposed to do
}
if (preloadDependencyCount != 0)
{
replacer.SetPreloadDependencies(preloadDependencies);
}
return(replacer);
}
}
return(null);
}
