/// <summary>
/// Fetches prime numbers from existing result files.
/// </summary>
/// <param name="fileHandler">The object handling the result files.</param>
/// <returns>Container holding information about the loaded prime numbers.</returns>
public ExistingPrimesLoadingResult FetchExistingPrimes(ResultFileHandler fileHandler)
{
//Tell the user the loading has started.
var startingArgs = new LoadingPrimesFromResultFileStartedArgs();
OnLoadingPrimesFromResultFileStarted?.Invoke(this, startingArgs);
//Load the existing primes.
var result = fetchPrimes(fileHandler.ResultFiles);
//Store the index of the last result file with room for more prime numbers.
result.IndexOfLastResultFileToStoreIn = findFirstStorableFileIndex(fileHandler.ResultFiles);
//Tell the user that the loading finished.
int numberOfPrimesLoaded = result.CachedPrimes.Count;
int numberOfResultFilesLoaded = (int)Math.Ceiling(result.CachedPrimes.Count / (decimal)Configuration.NumberOfPrimesInFile);
var loadingFinishedArgs = new LoadingPrimesFromResultFileFinishedArgs(numberOfPrimesLoaded, numberOfResultFilesLoaded);
OnLoadingPrimesFromResultFileFinished?.Invoke(this, loadingFinishedArgs);
//Return the result from the loading.
return(result);
}
/// <summary>
/// Handles the OnLoadingPrimesFromResultFileFinished event for the object loading existing prime numbers.
/// </summary>
/// <param name="loader">The object loading the existing prime numbers.</param>
/// <param name="args">The information about the event.</param>
private void Loader_OnLoadingPrimesFromResultFileFinished(object loader, LoadingPrimesFromResultFileFinishedArgs args)
{
OnLoadingPrimesFromResultFileFinished?.Invoke(loader, args);
}
private static void Generator_OnLoadingPrimesFromResultFileFinished(object generator, LoadingPrimesFromResultFileFinishedArgs args)
{
if (args.NumberOfResultFilesLoaded == 0)
{
Console.WriteLine("No existing result files were found. The generation will start from scratch.");
}
else
{
var format = "Prime number loading finished. {0} primes were loaded from {1} files.";
var message = String.Format(format, args.NumberOfPrimesLoaded, args.NumberOfResultFilesLoaded);
Console.WriteLine(message);
}
}
