public IEnumerable <SimpleDirectoryInfo> GetDirectories(string path)
{
FtpListItem[] result = null;
if (!mCache.IsValid("L", path))
{
result = mClient.GetListing(path, FtpListOption.AllFiles);
mCache.ClearAllChildren(path);
mCache.Add("L", path, result);
}
else
{
result = (FtpListItem[])mCache.Get("L", path);
}
foreach (var entry in result)
{
if (entry.Type == FtpFileSystemObjectType.Directory)
{
yield return(GetDirectoryInfoImpl(path, entry));
}
}
}