public static async Task <IDirectoryInfo> FindDirectoryAsync(this IDirectoryInfo di, string name, CancellationToken ct)
{
if (di == null)
{
throw new ArgumentNullException(nameof(di));
}
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
var children = await di.GetItemsAsync(ct);
foreach (var child in children.OfType <IDirectoryInfo>())
{
if (!child.IsDirectory())
{
continue;
}
if (string.Equals(child.Name, name, StringComparison.OrdinalIgnoreCase))
{
return(child);
}
}
return(null);
}
public async Task <IReadOnlyCollection <IFileSystemInfo> > GetItemsAsync(CancellationToken ct)
{
var items = await _directoryInfo.GetItemsAsync(ct).ConfigureAwait(false);
return(items.Select(Convert).ToList());
}