public static async Task <IStorageFolder> CreateFolderAsync(
this IStorageProvider storageProvider,
IStoragePath path,
bool recursive = false,
IProgress progress = null,
CancellationToken cancellationToken = default(CancellationToken))
{
if (storageProvider == null)
{
throw new ArgumentNullException(nameof(storageProvider));
}
if (path == null)
{
throw new ArgumentNullException(nameof(path));
}
if (storageProvider.Features.TryGetFeature(out ICreateByPathFeature implmentation))
{
return(await implmentation.CreateFolderAsync(storageProvider, path, recursive, progress, cancellationToken));
}
// Default implementation.
var p = await path.GetParentAsync(cancellationToken);
switch (p)
{
case null:
throw new InvalidOperationException($"Unable to resolve parent of {path.Uri}.");
case IStorageFolder folder:
return(await folder.CreateFolderAsync(path.Name, progress, cancellationToken));
case IStorageRecord _:
throw new InvalidOperationException($"Parent of {path.Uri} is a storage record.");
case IStoragePath parentPath:
if (recursive)
{
var folder = await storageProvider.CreateFolderAsync(parentPath, true, progress, cancellationToken);
return(await folder.CreateFolderAsync(path.Name, progress, cancellationToken));
}
throw new InvalidOperationException($"Parent of {path.Uri} does not exist.");
default:
throw new NotImplementedException($"No implementation provided that handles {p.GetType()}");
}
}
public static IStoragePath GetParent(this IStoragePath path)
{
return(path.GetParentAsync().GetAwaiter().GetResult());
}