bool FCollection::Load(FText& OutError)
{
ObjectSet.Empty();
DiskSnapshot = FCollectionSnapshot();
FString FullFileContentsString;
if (!FFileHelper::LoadFileToString(FullFileContentsString, *SourceFilename))
{
OutError = FText::Format(LOCTEXT("LoadError_FailedToLoadFile", "Failed to load the collection '{0}' from disk."), FText::FromString(SourceFilename));
return false;
}
// Normalize line endings and parse into array
TArray<FString> FileContents;
FullFileContentsString.ReplaceInline(TEXT("\r"), TEXT(""));
FullFileContentsString.ParseIntoArray(FileContents, TEXT("\n"), /*bCullEmpty=*/false);
if ( FileContents.Num() == 0 )
{
// Empty file, assume static collection with no items
return true;
}
// Load the header from the contents array
TMap<FString,FString> HeaderPairs;
while ( FileContents.Num() )
{
// Pop the 0th element from the contents array and read it
const FString Line = FileContents[0].Trim().TrimTrailing();
FileContents.RemoveAt(0);
if (Line.Len() == 0)
{
// Empty line. Done reading headers.
break;
}
FString Key;
FString Value;
if ( Line.Split(TEXT(":"), &Key, &Value) )
{
HeaderPairs.Add(Key, Value);
}
}
// Now process the header pairs to prepare and validate this collection
if ( !LoadHeaderPairs(HeaderPairs) )
{
// Bad header
OutError = FText::Format(LOCTEXT("LoadError_BadHeader", "The collection file '{0}' contains a bad header and could not be loaded."), FText::FromString(SourceFilename));
return false;
}
// Now load the content if the header load was successful
if ( IsDynamic() )
{
// @todo collection Load dynamic collections
}
else
{
// Static collection, a flat list of asset paths
for (FString Line : FileContents)
{
Line.Trim();
Line.TrimTrailing();
if ( Line.Len() )
{
AddObjectToCollection(FName(*Line));
}
}
}
DiskSnapshot.TakeSnapshot(*this);
return true;
}
bool FCollection::LoadFromFile(const FString& InFilename, bool InUseSCC)
{
Clear();
FString FullFileContentsString;
if ( !FFileHelper::LoadFileToString(FullFileContentsString, *InFilename) )
{
return false;
}
// Initialize the FCollection and set up the collection name
bUseSCC = InUseSCC;
SourceFilename = InFilename;
CollectionName = FName(*FPaths::GetBaseFilename(InFilename));
// Normalize line endings and parse into array
TArray<FString> FileContents;
FullFileContentsString.ReplaceInline(TEXT("\r"), TEXT(""));
FullFileContentsString.ParseIntoArray(&FileContents, TEXT("\n"), /*bCullEmpty=*/false);
if ( FileContents.Num() == 0 )
{
// Empty file, assume static collection with no items
return true;
}
// Load the header from the contents array
TMap<FString,FString> HeaderPairs;
while ( FileContents.Num() )
{
// Pop the 0th element from the contents array and read it
const FString Line = FileContents[0].Trim().TrimTrailing();
FileContents.RemoveAt(0);
if (Line.Len() == 0)
{
// Empty line. Done reading headers.
break;
}
FString Key;
FString Value;
if ( Line.Split(TEXT(":"), &Key, &Value) )
{
HeaderPairs.Add(Key, Value);
}
}
// Now process the header pairs to prepare and validate this collection
if ( !LoadHeaderPairs(HeaderPairs) )
{
// Bad header
return false;
}
// Now load the content if the header load was successful
if ( IsDynamic() )
{
// @todo collection Load dynamic collections
}
else
{
// Static collection, a flat list of asset paths
for (int32 LineIdx = 0; LineIdx < FileContents.Num(); ++LineIdx)
{
const FString Line = FileContents[LineIdx].Trim().TrimTrailing();
if ( Line.Len() )
{
AddAssetToCollection(FName(*Line));
}
}
DiskAssetList = AssetList;
}
return true;
}
