Current Directory and Parent Directory returned by ListDirectory.

Running sftpClient.ListDirectory(path) returns values . and ...
Whilst this is valid behaviour, special consideration has to be given whenever using this command to determine if we want these "relative-folders". There's also no flag (e.g. IsRelative) to easily filter; rather we have to filter on the folder's name to detect / exclude these.

$client.ListDirectory('/files') | Format-Table Name, Is* -AutoSize

Name                      IsSocket IsSymbolicLink IsRegularFile IsBlockDevice IsDirectory IsCharacterDevice IsNamedPipe
----                      -------- -------------- ------------- ------------- ----------- ----------------- -----------
..                           False          False         False         False        True             False       False
out                          False          False         False         False        True             False       False
.                            False          False         False         False        True             False       False
in                           False          False         False         False        True             False       False

Adding an option to hide these (either on the call to ListDirectory, or as a preference for the SftpClient itself would be helpful; or simply providing an IsRelative property on the SftpFile class to allow easy discrimination.

从 ListDirectory 入口点开始，检查 issue 所示的 SftpFile 表示形式。将请求的过滤选项与 IsRelative 风格的判别器进行比较，然后验证所选行为是否允许调用方在不基于名称进行过滤的情况下排除 . 和 ..。完成的标准是 API 提供一种有文档说明且可测试的方式来隐藏或识别这两个条目。