bool FDataTableImporterJSON::ReadRow(const TSharedRef<FJsonObject>& ParsedTableRowObject, const int32 RowIdx)
{
// Get row name
FName RowName = DataTableUtils::MakeValidName(ParsedTableRowObject->GetStringField(TEXT("Name")));
// Check its not 'none'
if (RowName.IsNone())
{
ImportProblems.Add(FString::Printf(TEXT("Row '%d' missing a name."), RowIdx));
return false;
}
// Check its not a duplicate
if (DataTable->RowMap.Find(RowName) != nullptr)
{
ImportProblems.Add(FString::Printf(TEXT("Duplicate row name '%s'."), *RowName.ToString()));
return false;
}
// Allocate data to store information, using UScriptStruct to know its size
uint8* RowData = (uint8*)FMemory::Malloc(DataTable->RowStruct->PropertiesSize);
DataTable->RowStruct->InitializeStruct(RowData);
// And be sure to call DestroyScriptStruct later
if (auto UDStruct = Cast<const UUserDefinedStruct>(DataTable->RowStruct))
{
UDStruct->InitializeDefaultValue(RowData);
}
// Add to row map
DataTable->RowMap.Add(RowName, RowData);
// Now read in each property
for (TFieldIterator<UProperty> It(DataTable->RowStruct); It; ++It)
{
UProperty* BaseProp = *It;
check(BaseProp);
const FString PropertyName = BaseProp->GetName();
TSharedPtr<FJsonValue> ParsedPropertyValue = ParsedTableRowObject->TryGetField(PropertyName);
if (!ParsedPropertyValue.IsValid())
{
ImportProblems.Add(FString::Printf(TEXT("Row '%s' is missing an entry for '%s'."), *RowName.ToString(), *PropertyName));
continue;
}
void* Data = BaseProp->ContainerPtrToValuePtr<void>(RowData, 0);
ReadStructEntry(ParsedPropertyValue.ToSharedRef(), RowName, RowData, BaseProp, Data);
}
return true;
}
bool FDataTableImporterJSON::ReadStruct(const TSharedRef<FJsonObject>& InParsedObject, UScriptStruct* InStruct, const FName InRowName, void* InStructData)
{
// Now read in each property
for (TFieldIterator<UProperty> It(InStruct); It; ++It)
{
UProperty* BaseProp = *It;
check(BaseProp);
const FString ColumnName = DataTableUtils::GetPropertyDisplayName(BaseProp, BaseProp->GetName());
TSharedPtr<FJsonValue> ParsedPropertyValue;
for (const FString& PropertyName : DataTableUtils::GetPropertyImportNames(BaseProp))
{
ParsedPropertyValue = InParsedObject->TryGetField(PropertyName);
if (ParsedPropertyValue.IsValid())
{
break;
}
}
if (!ParsedPropertyValue.IsValid())
{
ImportProblems.Add(FString::Printf(TEXT("Row '%s' is missing an entry for '%s'."), *InRowName.ToString(), *ColumnName));
continue;
}
if (BaseProp->ArrayDim == 1)
{
void* Data = BaseProp->ContainerPtrToValuePtr<void>(InStructData, 0);
ReadStructEntry(ParsedPropertyValue.ToSharedRef(), InRowName, ColumnName, InStructData, BaseProp, Data);
}
else
{
const TCHAR* const ParsedPropertyType = JSONTypeToString(ParsedPropertyValue->Type);
const TArray< TSharedPtr<FJsonValue> >* PropertyValuesPtr;
if (!ParsedPropertyValue->TryGetArray(PropertyValuesPtr))
{
ImportProblems.Add(FString::Printf(TEXT("Property '%s' on row '%s' is the incorrect type. Expected Array, got %s."), *ColumnName, *InRowName.ToString(), ParsedPropertyType));
return false;
}
if (BaseProp->ArrayDim != PropertyValuesPtr->Num())
{
ImportProblems.Add(FString::Printf(TEXT("Property '%s' on row '%s' is a static sized array with %d elements, but we have %d values to import"), *ColumnName, *InRowName.ToString(), BaseProp->ArrayDim, PropertyValuesPtr->Num()));
}
for (int32 ArrayEntryIndex = 0; ArrayEntryIndex < BaseProp->ArrayDim; ++ArrayEntryIndex)
{
if (PropertyValuesPtr->IsValidIndex(ArrayEntryIndex))
{
void* Data = BaseProp->ContainerPtrToValuePtr<void>(InStructData, ArrayEntryIndex);
const TSharedPtr<FJsonValue>& PropertyValueEntry = (*PropertyValuesPtr)[ArrayEntryIndex];
ReadArrayEntry(PropertyValueEntry.ToSharedRef(), InRowName, ColumnName, ArrayEntryIndex, BaseProp, Data);
}
}
}
}
return true;
}