private IEnumerable <string> EnumerateFilesInFolder(string targetDirectory)
{
var fileEntries = Directory.GetFiles(targetDirectory);
foreach (var file in fileEntries)
{
FileFinded?.Invoke();
if (_filterPattern.Invoke(file))
{
FilteredFileFinded?.Invoke();
}
yield return(file);
}
var subdirectoryEntries = Directory.GetDirectories(targetDirectory);
foreach (string subdirectory in subdirectoryEntries)
{
DirectoryFinded?.Invoke();
if (_filterPattern.Invoke(subdirectory))
{
FilteredDirectoryFinded?.Invoke();
}
foreach (var file in EnumerateFilesInFolder(subdirectory)
.TakeWhile(file => !_cancelTokenSource.IsCancellationRequested)
.ToList())
{
yield return(file);
}
}
}
//перебирает файлы
private IEnumerable <CatalogItem> FindFiles(FileInfo[] files)
{
foreach (var file in files)
{
//если алгоритм фильтрации задан
if (MyFilter != null)
{
if (MyFilter(file))
{
fileArgs.Extention = file.Extension;
FilteredFileFinded?.Invoke(this, fileArgs);
yield return(new CatalogItem {
Name = file.Name, NestingLevel = nestingLevel, Item = CatalogItems.File
});
}
}
else
{
fileArgs.Extention = file.Extension;
FileFinded?.Invoke(this, fileArgs);
yield return(new CatalogItem {
Name = file.Name, NestingLevel = nestingLevel, Item = CatalogItems.File
});
}
}
}
private DirectoryEntityCollection FilterFiles(DirectoryEntityCollection collection)
{
collection.Files = _filterAction?.Invoke(collection.Files) ?? collection.Files;
for (var i = 0; i < collection.SubEntities.Length; i++)
{
collection.SubEntities[i] = FilterFiles(collection.SubEntities[i]);
}
FilteredFileFinded?.Invoke(ref args);
if (args.RemoveDirectories.Any())
{
collection.RemoveFolder(args.RemoveDirectories);
}
if (args.RemoveFiles.Any())
{
collection.RemoveFiles(args.RemoveFiles);
}
if (args.StopSearching)
{
return(collection);
}
return(collection);
}
protected virtual void OnFileFinded(FileInfo fileInfo, bool isFiltered = false)
{
var arg = new ItemFindedArg <FileSystemInfo>(fileInfo);
_argList.Add(arg);
if (isFiltered)
{
FilteredFileFinded?.Invoke(this, arg);
}
else
{
FileFinded?.Invoke(this, arg);
}
}
protected virtual void OnFilteredFileFinded(FileSystemEventArgs args)
{
FilteredFileFinded?.Invoke(this, args);
}
protected virtual void OnFilteredFileFinded(string path) //запуск события после фильтрации
{
FilteredFileFinded?.Invoke(path);
Console.WriteLine(path);
}
