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Trouble finding file with FFilehelper

Development Discussion C++ Programming
#1

Hello All,

Can someone please take a look at my code and tell me what I am doing wrong? I am trying to get the hang of loading a .txt (or later .csv) file to an array, so it can then be used to populate items. In my test run, I only want to load to array and print to log. However, no matter where I put the file, or what I do, the ‘else’ statement below fires and ‘no text’ is shown. Can anyone see what I am doing wrong? Where does the file need to be to be accessed? Thanks in advance!!

//Array to store incoming text from file
TArray LevelInfo;
//Filepath
FString fileNameLvl = FString(“Files/LevelTest1.txt”);

//Checking file exists
	if (FFileHelper::LoadFileToStringArray(LevelInfo, *fileNameLvl))
	{
		FString ToBePrinted = " ";
		for (auto& Str : LevelInfo)
		{
			ToBePrinted += Str;

			UE_LOG(LogTemp, Warning, TEXT("ToBePrinted"));

		}
		
	else//File could not be found?
	{
		UE_LOG(LogTemp, Warning, TEXT("No file"));
	}
#2

My guess would be that you need to specify a full path to a file, otherwise it’s probably looking for like Binaries\Win64\Files\LevelTest1.txt or something like that, whatever the CWD of hte process is.

Something like FString fileNameLvl = FPaths::ProjectContentDir() / TEXT(“Files/LevelTest1.txt”)

1 Like
#3

Thank you so much for your help! thanks to your suggestion I can print the entire file path to the log:

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image1514×284 46.6 KB

So I KNOW it can find it, but then when I run if (FPaths::FileExists(*fileNameLvl)) with the SAME variable, it returns negative. I have an If/else statement to check and it always returns else:
TArray LevelInfo;
//Theory from Unreal engine forum
FString fileNameLvl = FPaths::ProjectContentDir()/TEXT(“Dark/Source/Files/LevelTest1.txt”);
//Display full filename to log
UE_LOG(LogTemp, Warning, TEXT(“Text, %s”), *fileNameLvl);

//Checking file exists
if (FPaths::FileExists(*fileNameLvl))
{
	UE_LOG(LogTemp, Warning, TEXT("it exists"));

	if (FFileHelper::LoadFileToStringArray(LevelInfo, *fileNameLvl))
	{
		FString ToBePrinted = " ";
		for (auto& Str : LevelInfo)
		{
			ToBePrinted += Str;

			UE_LOG(LogTemp, Warning, TEXT("ToBePrinted"));

		}
	}
	else//File could not be found?
	{
		UE_LOG(LogTemp, Warning, TEXT("No file"));
	}
}
else
{
	UE_LOG(LogTemp, Warning, TEXT("Try again"));
}

}

Any ideas? Thanks again!

#4

Never mind I figured it out!! Thank you SO much for your help! I had to much being appended to the source directory. By appending this "Dark/Source/Files/LevelTest1.txt” I was actually directing it elsewhere. I moved the text file and it’s source folder “Files” under Content where project directory was looking and it found it!! Thanks again for your help!!!

1 Like