TOptional ResolvePathToFile()

in Source/RiderSourceCodeAccess/Private/RiderSourceCodeAccessor.cpp [30:57]

• 25 lines of code
• 7 McCabe index (conditional complexity)

TOptional<FString> ResolvePathToFile(const FString& FullPath)
{
	FString Path = FullPath;
	if (FPaths::IsRelative(Path))
		Path = FPaths::ConvertRelativePathToFull(Path);

	if (!FPaths::FileExists(Path))
	{
		static const TArray<FString> SubDirs = {
			"/Engine/Source/",
			"/Engine/Plugins/"
		};

		FString EngineRootDir = FPaths::RootDir();
		FPaths::NormalizeFilename(Path);
		int32 Index = INDEX_NONE;
		for (const FString& SubDir : SubDirs)
		{
			Index = Path.Find(SubDir);
			if (Index != INDEX_NONE) break;
		}
		if (Index == INDEX_NONE) return {};

		Path = EngineRootDir.Append(Path.RightChop(Index));
		if (!FPaths::FileExists(Path)) return {};
	}
	return {Path};
}