How do i check assets for references?

Development Pipeline & Plugins Editor Scripting
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1

Hi,
i want to check the assets for references but all referencers/dependencies are always zero. Can anyone help, please?
Here is my code:

void FCleanUp_PluginModule::SearchForAssets()
{
UE_LOG(LogTemp, Warning, TEXT(“Searching For Assets”));

//path to search
const FString DirectoryFolder = FPaths::ProjectContentDir();
//set FileExtension to NULL to get all files with any extension
const FString FileExtension = "";
//array to store found files
TArray<FString> FoundFiles;
//find files in contentbrowser
FPlatformFileManager::Get().GetPlatformFile().FindFiles(FoundFiles, *DirectoryFolder, *FileExtension);

FAssetRegistryModule& AssetRegistryModule = FModuleManager::GetModuleChecked<FAssetRegistryModule>("AssetRegistry");

for (int i = 0; i < FoundFiles.Num(); i++)
{
	//check for dependencies
	TArray<FName> HardDependencies;
	AssetRegistryModule.Get().GetDependencies(*FoundFiles[i], HardDependencies,EAssetRegistryDependencyType::Hard);

	TArray<FName> SoftDependencies;
	AssetRegistryModule.Get().GetDependencies(*FoundFiles[i], SoftDependencies,EAssetRegistryDependencyType::Soft);

	if (HardDependencies.Num() > 0)
	{
		UE_LOG(LogTemp, Warning, TEXT("hard dependencies found for %s"), *FoundFiles[i]);
	}
	if (SoftDependencies.Num() > 0)
	{
		UE_LOG(LogTemp, Warning, TEXT("soft dependencies found for %s"), *FoundFiles[i]);
	}
	//check for references
	TArray<FName> HardReferecers;
	AssetRegistryModule.Get().GetReferencers(*FoundFiles[i], HardReferecers,EAssetRegistryDependencyType::Hard);

	TArray<FName> SoftReferencers;
	AssetRegistryModule.Get().GetReferencers(*FoundFiles[i], SoftReferencers,EAssetRegistryDependencyType::Soft);

	if (HardReferecers.Num() > 0)
	{
		UE_LOG(LogTemp, Warning, TEXT("hard reference found for %s"), *FoundFiles[i]);
	}
	if (SoftReferencers.Num() > 0)
	{
		UE_LOG(LogTemp, Warning, TEXT("soft reference found for %s"), *FoundFiles[i]);
	}
}

}

2

For those who are still looking for an answer to that old but still valid question.

In AssetDataGatherer there is a flag that controls whether the dependencies must be gathered :

bGatherDependsData = (GIsEditor && !FParse::Param( FCommandLine::Get(), TEXT("NoDependsGathering") )) || FParse::Param(FCommandLine::Get(),TEXT("ForceDependsGathering"));

if you are outside of the editor, adding the extra -ForceDependsGathering on the command line will do the trick.

1 Like
3

Hey I know its been a while but do you have more info on how you got that piece of code working?

I’m not sure what the AssetDataGatherer is or how to actually set that flag

4

Actually no worries, I think I got it sorted.

In your code you are passing FStrings to the various GetDependencies/Referencers calls.
Looking at this piece of the docs:

to me it seemed like we were supposed to passing package names. When I swapped in package names for the fstrings it worked for me.