/// <summary>
///
/// </summary>
/// <param name="folderToSearchIn"></param>
/// <returns></returns>
/// <exception cref="FolderNotFoundException"></exception>
/// <exception cref="InvalidPathException"></exception>
/// <exception cref="ObjectDisposedException"></exception>
private FileInfo SearchFileInFolderRecursively(FolderInfo folderToSearchIn)
{
try
{
RefreshCurrentFolder(folderToSearchIn);
if (!_idsOfFilesAndFoldersSeenSoFar.Contains(folderToSearchIn.Id))
{
foreach (FileInfo fileInfo in _filesOfCurrentFolder)
{
if (!_idsOfFilesAndFoldersSeenSoFar.Contains(fileInfo.Id))
{
_idsOfFilesAndFoldersSeenSoFar.Add(fileInfo.Id);
if (_wildcardForMatchingNamesOfFiles.CheckStringForMatch(fileInfo.Name))
{
return(fileInfo);
}
}
}
foreach (FolderInfo folder in _subfoldersOfCurrentFolder)
{
if (!_idsOfFilesAndFoldersSeenSoFar.Contains(folder.Id))
{
FileInfo fileFromFolder = SearchFileInFolderRecursively(folder);
if (fileFromFolder != null)
{
return(fileFromFolder);
}
}
}
_idsOfFilesAndFoldersSeenSoFar.Add(folderToSearchIn.Id);
// пошли к parent-y
if (_folderToEnumerateFilesIn.Id != folderToSearchIn.Id)
{
try
{
FolderInfo parent = _filesAndFoldersProvider.GetParentOf(folderToSearchIn.FullPath);
FileInfo fileFromFolder = this.SearchFileInFolderRecursively(parent);
if (fileFromFolder != null)
{
return(fileFromFolder);
}
}
catch (InvalidPathException)
{
return(null);
}
catch (CannotResolvePathException)
{
throw new InvalidPathException();
}
}
}
}
catch (ObjectDisposedException)
{
this.Dispose();
throw new ObjectDisposedException("Продолжение перебора файлов невозможно: файловая система уже была принудительно закрыта (путем вызова метода Dispose()).");
}
catch (FolderNotFoundException)
{
_enumeratedStructureHasChanged = true;
throw CreateEnumerationNotPossibleException();
}
catch (InvalidPathException)
{
_enumeratedStructureHasChanged = true;
throw CreateEnumerationNotPossibleException();
}
return(null);
}
