/// <summary>
/// UDKPackage class constructor. It also load namelist, importlist and exportinfo (not exportdata) from udk file
/// </summary>
/// <param name="UDKPackagePath">full path + file name of desired udk file.</param>
/// <param name="create">Create a file instead of reading from disk</param>
private UDKPackage(string UDKPackagePath, bool create = false) : base(Path.GetFullPath(UDKPackagePath))
{
ME3ExpMemoryAnalyzer.MemoryAnalyzer.AddTrackedMemoryItem($"UDKPackage {Path.GetFileName(UDKPackagePath)}", new WeakReference(this));
if (create)
{
folderName = "None";
engineVersion = 12791;
//reasonable defaults?
Flags = EPackageFlags.AllowDownload | EPackageFlags.NoExportsData;
return;
}
using (var fs = File.OpenRead(FilePath))
{
#region Header
uint magic = fs.ReadUInt32();
if (magic != packageTag)
{
throw new FormatException("Not an Unreal package!");
}
ushort unrealVersion = fs.ReadUInt16();
ushort licenseeVersion = fs.ReadUInt16();
FullHeaderSize = fs.ReadInt32();
int foldernameStrLen = fs.ReadInt32();
//always "None", so don't bother saving result
if (foldernameStrLen > 0)
{
folderName = fs.ReadStringASCIINull(foldernameStrLen);
}
else
{
folderName = fs.ReadStringUnicodeNull(foldernameStrLen * -2);
}
Flags = (EPackageFlags)fs.ReadUInt32();
//if (Flags.HasFlag(EPackageFlags.Compressed))
//{
// throw new FormatException("Cannot read compressed UDK packages!");
//}
NameCount = fs.ReadInt32();
NameOffset = fs.ReadInt32();
ExportCount = fs.ReadInt32();
ExportOffset = fs.ReadInt32();
ImportCount = fs.ReadInt32();
ImportOffset = fs.ReadInt32();
DependencyTableOffset = fs.ReadInt32();
importExportGuidsOffset = fs.ReadInt32();
importGuidsCount = fs.ReadInt32();
exportGuidsCount = fs.ReadInt32();
thumbnailTableOffset = fs.ReadInt32();
PackageGuid = fs.ReadGuid();
uint generationsTableCount = fs.ReadUInt32();
if (generationsTableCount > 0)
{
generationsTableCount--;
Gen0ExportCount = fs.ReadInt32();
Gen0NameCount = fs.ReadInt32();
Gen0NetworkedObjectCount = fs.ReadInt32();
}
//don't care about other gens, so skip them
fs.Skip(generationsTableCount * 12);
engineVersion = fs.ReadInt32();
cookedContentVersion = fs.ReadInt32();
//skip compression type chunks. Decompressor will handle that
long compressionInfoOffset = fs.Position;
fs.SkipInt32();
int numChunks = fs.ReadInt32();
fs.Skip(numChunks * 16);
packageSource = fs.ReadUInt32();
//additional packages to cook, and texture allocation, but we don't care about those, so we won't read them in.
#endregion
Stream inStream = fs;
if (IsCompressed && numChunks > 0)
{
inStream = CompressionHelper.DecompressUDK(fs, compressionInfoOffset);
}
inStream.JumpTo(NameOffset);
for (int i = 0; i < NameCount; i++)
{
names.Add(inStream.ReadUnrealString());
inStream.Skip(8);
}
inStream.JumpTo(ImportOffset);
for (int i = 0; i < ImportCount; i++)
{
ImportEntry imp = new ImportEntry(this, inStream)
{
Index = i
};
imp.PropertyChanged += importChanged;
imports.Add(imp);
}
//read exportTable (ExportEntry constructor reads export data)
inStream.JumpTo(ExportOffset);
for (int i = 0; i < ExportCount; i++)
{
ExportEntry e = new ExportEntry(this, inStream)
{
Index = i
};
e.PropertyChanged += exportChanged;
exports.Add(e);
}
}
}
private static void UpdateME2Offsets(ExportEntry export, int newDataOffset)
{
if (export.IsDefaultObject)
{
return; //this is not actually instance of that class
}
//update offsets for pcc-stored audio in wwisestreams
if (export.ClassName == "WwiseStream" && export.GetProperty <NameProperty>("Filename") == null)
{
byte[] binData = export.getBinaryData();
if (binData.Length < 44)
{
return; //¯\_(ツ)_ /¯
}
binData.OverwriteRange(44, BitConverter.GetBytes(newDataOffset + export.propsEnd() + 48));
export.setBinaryData(binData);
}
//update offsets for pcc-stored mips in Textures
else if (export.ClassName == "WwiseBank")
{
byte[] binData = export.getBinaryData();
binData.OverwriteRange(20, BitConverter.GetBytes(newDataOffset + export.propsEnd() + 24));
export.setBinaryData(binData);
}
//update offsets for pcc-stored mips in Textures
//else if (export.IsTexture())
//{
// int baseOffset = newDataOffset + export.propsEnd();
// MemoryStream binData = new MemoryStream(export.getBinaryData());
// binData.Skip(12);
// binData.WriteInt32(baseOffset + (int)binData.Position + 4);
// for (int i = binData.ReadInt32(); i > 0 && binData.Position < binData.Length; i--)
// {
// var storageFlags = (StorageFlags)binData.ReadInt32();
// if (!storageFlags.HasFlag(StorageFlags.externalFile)) //pcc-stored
// {
// int uncompressedSize = binData.ReadInt32();
// int compressedSize = binData.ReadInt32();
// binData.WriteInt32(baseOffset + (int)binData.Position + 4);//update offset
// binData.Seek((storageFlags == StorageFlags.noFlags ? uncompressedSize : compressedSize) + 8, SeekOrigin.Current); //skip texture and width + height values
// }
// else
// {
// binData.Seek(20, SeekOrigin.Current);//skip whole rest of mip definition
// }
// }
// export.setBinaryData(binData.ToArray());
//}
else if (export.ClassName == "ShaderCache")
{
int oldDataOffset = export.DataOffset;
MemoryStream binData = new MemoryStream(export.Data);
binData.Seek(export.propsEnd() + 1, SeekOrigin.Begin);
int nameList1Count = binData.ReadInt32();
binData.Seek(nameList1Count * 12, SeekOrigin.Current);
int shaderCount = binData.ReadInt32();
for (int i = 0; i < shaderCount; i++)
{
binData.Seek(24, SeekOrigin.Current);
int nextShaderOffset = binData.ReadInt32() - oldDataOffset;
binData.Seek(-4, SeekOrigin.Current);
binData.WriteInt32(nextShaderOffset + newDataOffset);
binData.Seek(nextShaderOffset, SeekOrigin.Begin);
}
int vertexFactoryMapCount = binData.ReadInt32();
binData.Seek(vertexFactoryMapCount * 12, SeekOrigin.Current);
int materialShaderMapCount = binData.ReadInt32();
for (int i = 0; i < materialShaderMapCount; i++)
{
binData.Seek(16, SeekOrigin.Current);
int switchParamCount = binData.ReadInt32();
binData.Seek(switchParamCount * 32, SeekOrigin.Current);
int componentMaskParamCount = binData.ReadInt32();
binData.Seek(componentMaskParamCount * 44, SeekOrigin.Current);
int nextMaterialShaderMapOffset = binData.ReadInt32() - oldDataOffset;
binData.Seek(-4, SeekOrigin.Current);
binData.WriteInt32(nextMaterialShaderMapOffset + newDataOffset);
binData.Seek(nextMaterialShaderMapOffset, SeekOrigin.Begin);
}
export.Data = binData.ToArray();
}
else if (export.ClassName == "StaticMeshComponent")
{
int baseOffset = newDataOffset + export.propsEnd();
MemoryStream bin = new MemoryStream(export.Data);
bin.JumpTo(export.propsEnd());
int lodDataCount = bin.ReadInt32();
for (int i = 0; i < lodDataCount; i++)
{
int shadowMapCount = bin.ReadInt32();
bin.Skip(shadowMapCount * 4);
int shadowVertCount = bin.ReadInt32();
bin.Skip(shadowVertCount * 4);
int lightMapType = bin.ReadInt32();
if (lightMapType == 0)
{
continue;
}
int lightGUIDsCount = bin.ReadInt32();
bin.Skip(lightGUIDsCount * 16);
switch (lightMapType)
{
case 1:
bin.Skip(4 + 8);
int bulkDataSize = bin.ReadInt32();
bin.WriteInt32(baseOffset + (int)bin.Position + 4);
bin.Skip(bulkDataSize);
bin.Skip(12 * 4 + 8);
bulkDataSize = bin.ReadInt32();
bin.WriteInt32(baseOffset + (int)bin.Position + 4);
bin.Skip(bulkDataSize);
break;
case 2:
bin.Skip((16) * 4 + 16);
break;
}
}
}
}
private static void UpdateME3Offsets(ExportEntry export, int newDataOffset)
{
if (export.IsDefaultObject)
{
return; //this is not actually instance of that class
}
//update offsets for pcc-stored audio in wwisestreams
if ((export.ClassName == "WwiseStream" && export.GetProperty <NameProperty>("Filename") == null) || export.ClassName == "WwiseBank")
{
byte[] binData = export.getBinaryData();
binData.OverwriteRange(12, BitConverter.GetBytes(newDataOffset + export.propsEnd() + 16));
export.setBinaryData(binData);
}
//update offsets for pcc-stored movies in texturemovies
else if (export.ClassName == "TextureMovie" && export.GetProperty <NameProperty>("TextureFileCacheName") == null)
{
byte[] binData = export.getBinaryData();
binData.OverwriteRange(12, BitConverter.GetBytes(newDataOffset + export.propsEnd() + 16));
export.setBinaryData(binData);
}
//update offsets for pcc-stored mips in Textures
//Keeping around just in case I somehow forgot something. -Mgamerz
//else if (export.IsTexture())
//{
// int baseOffset = newDataOffset + export.propsEnd();
// MemoryStream binData = new MemoryStream(export.getBinaryData());
// for (int i = binData.ReadInt32(); i > 0 && binData.Position < binData.Length; i--)
// {
// if (binData.ReadInt32() == (int)StorageTypes.pccUnc) //pcc-stored
// {
// int uncompressedSize = binData.ReadInt32();
// binData.Seek(4, SeekOrigin.Current); //skip compressed size
// binData.WriteInt32(baseOffset + (int)binData.Position + 4);//update offset
// binData.Seek(uncompressedSize + 8, SeekOrigin.Current); //skip texture and width + height values
// }
// else
// {
// binData.Seek(20, SeekOrigin.Current);//skip whole rest of mip definition
// }
// }
// export.setBinaryData(binData.ToArray());
//}
else if (export.ClassName == "ShaderCache")
{
int oldDataOffset = export.DataOffset;
MemoryStream binData = new MemoryStream(export.Data);
binData.Seek(export.propsEnd() + 1, SeekOrigin.Begin);
int nameList1Count = binData.ReadInt32();
binData.Seek(nameList1Count * 12, SeekOrigin.Current);
int namelist2Count = binData.ReadInt32();//namelist2
binData.Seek(namelist2Count * 12, SeekOrigin.Current);
int shaderCount = binData.ReadInt32();
for (int i = 0; i < shaderCount; i++)
{
binData.Seek(24, SeekOrigin.Current);
int nextShaderOffset = binData.ReadInt32() - oldDataOffset;
binData.Seek(-4, SeekOrigin.Current);
binData.WriteInt32(nextShaderOffset + newDataOffset);
binData.Seek(nextShaderOffset, SeekOrigin.Begin);
}
int vertexFactoryMapCount = binData.ReadInt32();
binData.Seek(vertexFactoryMapCount * 12, SeekOrigin.Current);
int materialShaderMapCount = binData.ReadInt32();
for (int i = 0; i < materialShaderMapCount; i++)
{
binData.Seek(16, SeekOrigin.Current);
int switchParamCount = binData.ReadInt32();
binData.Seek(switchParamCount * 32, SeekOrigin.Current);
int componentMaskParamCount = binData.ReadInt32();
binData.Seek(componentMaskParamCount * 44, SeekOrigin.Current);
int normalParams = binData.ReadInt32();
binData.Seek(normalParams * 29, SeekOrigin.Current);
binData.Seek(8, SeekOrigin.Current);
int nextMaterialShaderMapOffset = binData.ReadInt32() - oldDataOffset;
binData.Seek(-4, SeekOrigin.Current);
binData.WriteInt32(nextMaterialShaderMapOffset + newDataOffset);
binData.Seek(nextMaterialShaderMapOffset, SeekOrigin.Begin);
}
export.Data = binData.ToArray();
}
else if (export.ClassName == "StaticMeshComponent")
{
int baseOffset = newDataOffset + export.propsEnd();
MemoryStream bin = new MemoryStream(export.Data);
bin.JumpTo(export.propsEnd());
int lodDataCount = bin.ReadInt32();
for (int i = 0; i < lodDataCount; i++)
{
int shadowMapCount = bin.ReadInt32();
bin.Skip(shadowMapCount * 4);
int shadowVertCount = bin.ReadInt32();
bin.Skip(shadowVertCount * 4);
int lightMapType = bin.ReadInt32();
if (lightMapType == 0)
{
continue;
}
int lightGUIDsCount = bin.ReadInt32();
bin.Skip(lightGUIDsCount * 16);
int bulkDataSize;
switch (lightMapType)
{
case 1:
bin.Skip(4 + 8);
bulkDataSize = bin.ReadInt32();
bin.WriteInt32(baseOffset + (int)bin.Position + 4);
bin.Skip(bulkDataSize);
bin.Skip(12 * 3 + 8);
bulkDataSize = bin.ReadInt32();
bin.WriteInt32(baseOffset + (int)bin.Position + 4);
bin.Skip(bulkDataSize);
break;
case 2:
bin.Skip((16) * 3 + 16);
break;
case 3:
bin.Skip(8);
bulkDataSize = bin.ReadInt32();
bin.WriteInt32(baseOffset + (int)bin.Position + 4);
bin.Skip(bulkDataSize);
bin.Skip(24);
break;
case 4:
case 6:
bin.Skip(124);
break;
case 5:
bin.Skip(4 + 8);
bulkDataSize = bin.ReadInt32();
bin.WriteInt32(baseOffset + (int)bin.Position + 4);
bin.Skip(bulkDataSize);
bin.Skip(12);
break;
}
}
}
}
private static void UpdateME1Offsets(ExportEntry export, int newDataOffset)
{
if (export.IsDefaultObject)
{
return; //this is not actually instance of that class
}
if (export.IsTexture())
{
int baseOffset = newDataOffset + export.propsEnd();
MemoryStream binData = new MemoryStream(export.getBinaryData());
binData.Skip(12);
binData.WriteInt32(baseOffset + (int)binData.Position + 4);
for (int i = binData.ReadInt32(); i > 0 && binData.Position < binData.Length; i--)
{
var storageFlags = (StorageFlags)binData.ReadInt32();
if (!storageFlags.HasFlag(StorageFlags.externalFile)) //pcc-stored
{
int uncompressedSize = binData.ReadInt32();
int compressedSize = binData.ReadInt32();
binData.WriteInt32(baseOffset + (int)binData.Position + 4); //update offset
binData.Seek((storageFlags == StorageFlags.noFlags ? uncompressedSize : compressedSize) + 8, SeekOrigin.Current); //skip texture and width + height values
}
else
{
binData.Seek(20, SeekOrigin.Current);//skip whole rest of mip definition
}
}
export.setBinaryData(binData.ToArray());
}
else if (export.ClassName == "StaticMeshComponent")
{
int baseOffset = newDataOffset + export.propsEnd();
MemoryStream bin = new MemoryStream(export.Data);
bin.JumpTo(export.propsEnd());
int lodDataCount = bin.ReadInt32();
for (int i = 0; i < lodDataCount; i++)
{
int shadowMapCount = bin.ReadInt32();
bin.Skip(shadowMapCount * 4);
int shadowVertCount = bin.ReadInt32();
bin.Skip(shadowVertCount * 4);
int lightMapType = bin.ReadInt32();
if (lightMapType == 0)
{
continue;
}
int lightGUIDsCount = bin.ReadInt32();
bin.Skip(lightGUIDsCount * 16);
switch (lightMapType)
{
case 1:
bin.Skip(4 + 8);
int bulkDataSize = bin.ReadInt32();
bin.WriteInt32(baseOffset + (int)bin.Position + 4);
bin.Skip(bulkDataSize);
bin.Skip(12 * 4 + 8);
bulkDataSize = bin.ReadInt32();
bin.WriteInt32(baseOffset + (int)bin.Position + 4);
bin.Skip(bulkDataSize);
break;
case 2:
bin.Skip((16) * 4 + 16);
break;
}
}
}
}
private MEPackage(string filePath, MEGame forceGame = MEGame.Unknown) : base(Path.GetFullPath(filePath))
{
ME3ExpMemoryAnalyzer.MemoryAnalyzer.AddTrackedMemoryItem($"MEPackage {Path.GetFileName(filePath)}", new WeakReference(this));
if (forceGame != MEGame.Unknown)
{
//new Package
Game = forceGame;
//reasonable defaults?
Flags = EPackageFlags.Cooked | EPackageFlags.AllowDownload | EPackageFlags.DisallowLazyLoading | EPackageFlags.RequireImportsAlreadyLoaded;
return;
}
using (var fs = File.OpenRead(filePath))
{
#region Header
uint magic = fs.ReadUInt32();
if (magic != packageTag)
{
throw new FormatException("Not an Unreal package!");
}
ushort unrealVersion = fs.ReadUInt16();
ushort licenseeVersion = fs.ReadUInt16();
switch (unrealVersion)
{
case ME1UnrealVersion when licenseeVersion == ME1LicenseeVersion:
Game = MEGame.ME1;
break;
case ME2UnrealVersion when licenseeVersion == ME2LicenseeVersion:
Game = MEGame.ME2;
break;
case ME3UnrealVersion when licenseeVersion == ME3LicenseeVersion:
Game = MEGame.ME3;
break;
default:
throw new FormatException("Not a Mass Effect Package!");
}
FullHeaderSize = fs.ReadInt32();
int foldernameStrLen = fs.ReadInt32();
//always "None", so don't bother saving result
if (foldernameStrLen > 0)
{
fs.ReadStringASCIINull(foldernameStrLen);
}
else
{
fs.ReadStringUnicodeNull(foldernameStrLen * -2);
}
Flags = (EPackageFlags)fs.ReadUInt32();
if (Game == MEGame.ME3 && Flags.HasFlag(EPackageFlags.Cooked))
{
fs.SkipInt32(); //always 0
}
NameCount = fs.ReadInt32();
NameOffset = fs.ReadInt32();
ExportCount = fs.ReadInt32();
ExportOffset = fs.ReadInt32();
ImportCount = fs.ReadInt32();
ImportOffset = fs.ReadInt32();
DependencyTableOffset = fs.ReadInt32();
if (Game == MEGame.ME3)
{
ImportExportGuidsOffset = fs.ReadInt32();
fs.SkipInt32(); //ImportGuidsCount always 0
fs.SkipInt32(); //ExportGuidsCount always 0
fs.SkipInt32(); //ThumbnailTableOffset always 0
}
PackageGuid = fs.ReadGuid();
uint generationsTableCount = fs.ReadUInt32();
if (generationsTableCount > 0)
{
generationsTableCount--;
Gen0ExportCount = fs.ReadInt32();
Gen0NameCount = fs.ReadInt32();
Gen0NetworkedObjectCount = fs.ReadInt32();
}
//should never be more than 1 generation, but just in case
fs.Skip(generationsTableCount * 12);
fs.SkipInt32(); //engineVersion Like unrealVersion and licenseeVersion, these 2 are determined by what game this is,
fs.SkipInt32(); //cookedContentVersion so we don't have to read them in
if (Game == MEGame.ME2 || Game == MEGame.ME1)
{
fs.SkipInt32(); //always 0
fs.SkipInt32(); //always 47699
unknown4 = fs.ReadInt32();
fs.SkipInt32(); //always 1 in ME1, always 1966080 in ME2
}
unknown6 = fs.ReadInt32();
fs.SkipInt32(); //always -1 in ME1 and ME2, always 145358848 in ME3
if (Game == MEGame.ME1)
{
fs.SkipInt32(); //always -1
}
//skip compression type chunks. Decompressor will handle that
fs.SkipInt32();
int numChunks = fs.ReadInt32();
fs.Skip(numChunks * 16);
packageSource = fs.ReadUInt32();
if (Game == MEGame.ME2 || Game == MEGame.ME1)
{
fs.SkipInt32(); //always 0
}
//Doesn't need to be written out, so it doesn't need to be read in
//keep this here in case one day we learn that this has a purpose
/*if (Game == MEGame.ME2 || Game == MEGame.ME3)
* {
* int additionalPackagesToCookCount = fs.ReadInt32();
* var additionalPackagesToCook = new string[additionalPackagesToCookCount];
* for (int i = 0; i < additionalPackagesToCookCount; i++)
* {
* int strLen = fs.ReadInt32();
* if (strLen > 0)
* {
* additionalPackagesToCook[i] = fs.ReadStringASCIINull(strLen);
* }
* else
* {
* additionalPackagesToCook[i] = fs.ReadStringUnicodeNull(strLen * -2);
* }
* }
* }*/
#endregion
Stream inStream = fs;
if (IsCompressed && numChunks > 0)
{
inStream = Game == MEGame.ME3 ? CompressionHelper.DecompressME3(fs) : CompressionHelper.DecompressME1orME2(fs);
}
//read namelist
inStream.JumpTo(NameOffset);
for (int i = 0; i < NameCount; i++)
{
names.Add(inStream.ReadUnrealString());
if (Game == MEGame.ME1)
{
inStream.Skip(8);
}
else if (Game == MEGame.ME2)
{
inStream.Skip(4);
}
}
//read importTable
inStream.JumpTo(ImportOffset);
for (int i = 0; i < ImportCount; i++)
{
ImportEntry imp = new ImportEntry(this, inStream)
{
Index = i
};
imp.PropertyChanged += importChanged;
imports.Add(imp);
}
//read exportTable (ExportEntry constructor reads export data)
inStream.JumpTo(ExportOffset);
for (int i = 0; i < ExportCount; i++)
{
ExportEntry e = new ExportEntry(this, inStream)
{
Index = i
};
e.PropertyChanged += exportChanged;
exports.Add(e);
}
if (Game == MEGame.ME1)
{
ReadLocalTLKs();
}
}
}
public void RemoveTrailingTrash()
{
ExportEntry trashPackage = exports.FirstOrDefault(exp => exp.ObjectName == TrashPackageName);
if (trashPackage == null)
{
return;
}
int trashPackageUIndex = trashPackage.UIndex;
//make sure the first trashed export is the trashpackage
foreach (ExportEntry exp in exports)
{
if (exp == trashPackage)
{
//trashpackage is the first trashed export, so we're good
break;
}
if (exp.idxLink == trashPackageUIndex)
{
//turn this into trashpackage, turn old trashpackage into regular Trash, and point all trash entries to the new trashpackage
exp.ObjectName = TrashPackageName;
exp.idxLink = 0;
exp.PackageGUID = TrashPackageGuid;
trashPackage.ObjectName = "Trash";
trashPackage.idxLink = exp.UIndex;
trashPackage.PackageGUID = Guid.Empty;
foreach (IEntry entry in trashPackage.GetChildren())
{
entry.idxLink = exp.UIndex;
}
trashPackage = exp;
trashPackageUIndex = trashPackage.UIndex;
break;
}
}
//remove imports
for (int i = ImportCount - 1; i >= 0; i--)
{
ImportEntry lastImport = imports[i];
if (lastImport.idxLink != trashPackageUIndex)
{
//non-trash import, so stop removing
break;
}
imports.RemoveAt(i);
}
if (ImportCount != imports.Count)
{
ImportCount = imports.Count;
OnPropertyChanged(nameof(ImportCount));
}
//remove exports
for (int i = ExportCount - 1; i >= 0; i--)
{
ExportEntry lastExport = exports[i];
if (lastExport.idxLink != trashPackageUIndex)
{
//non-trash export, so stop removing
break;
}
exports.RemoveAt(i);
}
if (ExportCount != exports.Count)
{
ExportCount = exports.Count;
OnPropertyChanged(nameof(ExportCount));
}
//if there are no more trashed imports or exports, and if the TrashPackage is the last export, remove it
if (exports.LastOrDefault() is ExportEntry finalExport && finalExport == trashPackage && trashPackage.GetChildren().IsEmpty())
{
exports.Remove(trashPackage);
}
if (ExportCount != exports.Count)
{
ExportCount = exports.Count;
OnPropertyChanged(nameof(ExportCount));
}
}
public static T GetProperty <T>(this ExportEntry export, string name) where T : UProperty
{
return(export.GetProperties().GetProp <T>(name));
}
public static void setBinaryData(this ExportEntry export, ObjectBinary bin) => export.setBinaryData(bin.ToBytes(export.FileRef, export.DataOffset + export.propsEnd()));