bool FPackageReader::ReadAssetRegistryDataIfCookedPackage(TArray<FAssetData*>& AssetDataList, TArray<FString>& CookedPackageNamesWithoutAssetData)
{
if (!!(GetPackageFlags() & PKG_FilterEditorOnly))
{
const FString PackageName = FPackageName::FilenameToLongPackageName(PackageFilename);
bool bFoundAtLeastOneAsset = false;
// If the packaged is saved with the right version we have the information
// which of the objects in the export map as the asset.
// Otherwise we need to store a temp minimal data and then force load the asset
// to re-generate its registry data
if (UE4Ver() >= VER_UE4_COOKED_ASSETS_IN_EDITOR_SUPPORT)
{
const FString PackagePath = FPackageName::GetLongPackagePath(PackageName);
TArray<FObjectImport> ImportMap;
TArray<FObjectExport> ExportMap;
SerializeNameMap();
SerializeImportMap(ImportMap);
SerializeExportMap(ExportMap);
for (FObjectExport& Export : ExportMap)
{
if (Export.bIsAsset)
{
FString GroupNames; // Not used for anything
TMap<FName, FString> Tags; // Not used for anything
TArray<int32> ChunkIDs; // Not used for anything
// We need to get the class name from the import/export maps
FName ObjectClassName;
if (Export.ClassIndex.IsNull())
{
ObjectClassName = UClass::StaticClass()->GetFName();
}
else if (Export.ClassIndex.IsExport())
{
const FObjectExport& ClassExport = ExportMap[Export.ClassIndex.ToExport()];
ObjectClassName = ClassExport.ObjectName;
}
else if (Export.ClassIndex.IsImport())
{
const FObjectImport& ClassImport = ImportMap[Export.ClassIndex.ToImport()];
ObjectClassName = ClassImport.ObjectName;
}
AssetDataList.Add(new FAssetData(FName(*PackageName), FName(*PackagePath), FName(*GroupNames), Export.ObjectName, ObjectClassName, Tags, ChunkIDs, GetPackageFlags()));
bFoundAtLeastOneAsset = true;
}
}
}
if (!bFoundAtLeastOneAsset)
{
CookedPackageNamesWithoutAssetData.Add(PackageName);
}
return true;
}
return false;
}
bool FPackageReader::ReadDependencyData (FPackageDependencyData& OutDependencyData)
{
OutDependencyData.PackageName = FName(*FPackageName::FilenameToLongPackageName(PackageFilename));
SerializeNameMap();
SerializeImportMap(OutDependencyData.ImportMap);
SerializeStringAssetReferencesMap(OutDependencyData.StringAssetReferencesMap);
return true;
}
FNameTableArchiveWriter::~FNameTableArchiveWriter()
{
if (FileAr)
{
int64 ActualNameOffset = Tell();
SerializeNameMap();
Seek(NameOffsetLoc);
*this << ActualNameOffset;
delete FileAr;
FileAr = nullptr;
IFileManager::Get().Move(*FinalFilename, *TempFilename);
}
}
bool FNameTableArchiveWriter::SaveToFile(const TCHAR* Filename)
{
int64 ActualNameOffset = Tell();
SerializeNameMap();
Seek(NameOffsetLoc);
*this << ActualNameOffset;
// Save to a temp file first, then move to the destination to avoid corruption
const FString TempFile = FString(Filename) + TEXT(".tmp");
if ( FFileHelper::SaveArrayToFile(Writer, *TempFile) )
{
if ( IFileManager::Get().Move(Filename, *TempFile) )
{
return true;
}
}
return false;
}
bool FNameTableArchiveReader::LoadFile(const TCHAR* Filename, int32 SerializationVersion)
{
if ( FFileHelper::LoadFileToArray(Reader, Filename, FILEREAD_Silent) )
{
int32 MagicNumber = 0;
*this << MagicNumber;
if ( MagicNumber == PACKAGE_FILE_TAG )
{
int32 VersionNumber = 0;
*this << VersionNumber;
if (VersionNumber == SerializationVersion)
{
return SerializeNameMap();
}
}
}
return false;
}
bool FNameTableArchiveReader::LoadFile(const TCHAR* Filename, int32 SerializationVersion)
{
FileAr = IFileManager::Get().CreateFileReader(Filename, FILEREAD_Silent);
if (FileAr && !FileAr->IsError() && FileAr->TotalSize() > 0)
{
int32 MagicNumber = 0;
*this << MagicNumber;
if (!IsError() && MagicNumber == PACKAGE_FILE_TAG)
{
int32 VersionNumber = 0;
*this << VersionNumber;
if (!IsError() && VersionNumber == SerializationVersion)
{
return SerializeNameMap();
}
}
}
return false;
}