/// <summary>
/// Loads the XML files for each processor.
/// </summary>
/// <returns>All XML processors that were loaded successfully.</returns>
private IEnumerable <XMLProcessor> SetupXMLProcessors()
{
foreach (var xmlProcessor in XMLProcessors.ToArray())
{
if (xmlProcessor.LoadXMLFile() != ImproverStatus.LoadError)
{
yield return(xmlProcessor);
}
}
}
/// <summary>
/// Creates the XML Processors and adds them to the XMLProcessors collection.
/// </summary>
/// <param name="filenames">A list of the names of XML files to load.</param>
public async Task AddFilesAsync(IEnumerable <string>?filenames)
{
if (filenames is null)
{
return;
}
#if DEBUG
stopwatch.Restart();
#endif
string errorMessage = string.Empty;
var skippedFiles = new ConcurrentBag <string>();
var currentlyLoaded = XMLProcessors.ToArray();
var blockingCollection = new BlockingCollection <XMLProcessor>();
var loadingErrorMessageLock = new object();
var cd = new CompositeDisposable(XMLProcessors.SuspendCount(), blockingCollection);
// Consumer
blockingCollection.GetConsumingEnumerable()
.ToObservable(TaskPoolScheduler.Default)
.Buffer(5)
.ObserveOn(RxApp.MainThreadScheduler)
.Subscribe(
onNext: xmlProcessors => XMLProcessors.AddRange(xmlProcessors),
onCompleted: () => cd.Dispose()
);
// Producers
var loadingTasks = filenames.Select(fileFullPath => Task.Run(() =>
{
if (!fileFullPath.EndsWith(".xml", StringComparison.OrdinalIgnoreCase))
{
return;
}
string filename = Path.GetFileName(fileFullPath);
if (filename.Contains("VOCAL") || filename.StartsWith("DDC") || filename.StartsWith("DD_"))
{
skippedFiles.Add(filename);
return;
}
// Skip files that are already loaded
if (currentlyLoaded.Any(f => f.XMLFileFullPath == fileFullPath))
{
skippedFiles.Add(filename);
return;
}
var processor = new XMLProcessor(fileFullPath);
if (processor.Status == ImproverStatus.LoadError)
{
lock (loadingErrorMessageLock)
{
errorMessage += $"Error loading file {processor.XMLFileName}:{Environment.NewLine}{processor.StatusMessages[0].Message}{Environment.NewLine}";
}
return;
}
blockingCollection.Add(processor);
}));
var completeTasks = Task.WhenAll(loadingTasks.ToArray())
.ContinueWith(_ => blockingCollection.CompleteAdding());
await completeTasks;
#if DEBUG
stopwatch.Stop();
ShowInStatusbar($"Loading time: {stopwatch.ElapsedMilliseconds} ms");
#endif
if (!skippedFiles.IsEmpty)
{
UpdateStatusBarForSkippedFiles(skippedFiles);
}
if (errorMessage.Length > 0)
{
services.NotifyUser(errorMessage, "Error");
}
}