/// <summary>
/// Asynchronously removes a directory. Used by <see cref="DeleteDirectoryAsync(string)"/> and
/// <see cref="DeleteDirectoryAsync(string, FtpListOption)"/>.
/// </summary>
/// <param name="path">The full or relative path of the directory to delete</param>
/// <param name="deleteContents">Delete the contents before deleting the folder</param>
/// <param name="options">Useful to delete hidden files or dot-files.</param>
/// <param name="token">The token that can be used to cancel the entire process</param>
/// <returns></returns>
private async Task DeleteDirInternalAsync(string path, bool deleteContents, FtpListOption options, CancellationToken token = default(CancellationToken))
{
FtpReply reply;
path = path.GetFtpPath();
// server-specific directory deletion
if (!path.IsFtpRootDirectory())
{
// ask the server handler to delete a directory
if (ServerHandler != null)
{
if (await ServerHandler.DeleteDirectoryAsync(this, path, path, deleteContents, options, token))
{
return;
}
}
}
// DELETE CONTENTS OF THE DIRECTORY
if (deleteContents)
{
// when GetListing is called with recursive option, then it does not
// make any sense to call another DeleteDirectory with force flag set.
// however this requires always delete files first.
var recurse = !WasGetListingRecursive(options);
// items that are deeper in directory tree are listed first,
// then files will be listed before directories. This matters
// only if GetListing was called with recursive option.
FtpListItem[] itemList;
if (recurse)
{
itemList = await GetListingAsync(path, options, token);
}
else
{
itemList = (await GetListingAsync(path, options, token)).OrderByDescending(x => x.FullName.Count(c => c.Equals('/'))).ThenBy(x => x.Type).ToArray();
}
// delete the item based on the type
foreach (var item in itemList)
{
switch (item.Type)
{
case FtpFileSystemObjectType.File:
await DeleteFileAsync(item.FullName, token);
break;
case FtpFileSystemObjectType.Directory:
await DeleteDirInternalAsync(item.FullName, recurse, options, token);
break;
default:
throw new FtpException("Don't know how to delete object type: " + item.Type);
}
}
}
// SKIP DELETING ROOT DIRS
// can't delete the working directory and
// can't delete the server root.
if (path.IsFtpRootDirectory())
{
return;
}
// DELETE ACTUAL DIRECTORY
if (!(reply = await ExecuteAsync("RMD " + path, token)).Success)
{
throw new FtpCommandException(reply);
}
}