public async Task <List <FileSystemStorageItemBase> > GetChildItemsAsync(bool IncludeHiddenItems, ItemFilters Filter = ItemFilters.File | ItemFilters.Folder)
{
if (WIN_Native_API.CheckLocationAvailability(Path))
{
return(WIN_Native_API.GetStorageItems(Path, IncludeHiddenItems, Filter));
}
else
{
LogTracer.Log($"Native API could not enum subitems in path: \"{Path}\", fall back to UWP storage API");
try
{
if (await GetStorageItemAsync().ConfigureAwait(true) is StorageFolder Folder)
{
QueryOptions Options = new QueryOptions
{
FolderDepth = FolderDepth.Shallow,
IndexerOption = IndexerOption.UseIndexerWhenAvailable
};
Options.SetThumbnailPrefetch(Windows.Storage.FileProperties.ThumbnailMode.ListView, 150, Windows.Storage.FileProperties.ThumbnailOptions.UseCurrentScale);
Options.SetPropertyPrefetch(Windows.Storage.FileProperties.PropertyPrefetchOptions.BasicProperties, new string[] { "System.Size", "System.DateModified" });
StorageItemQueryResult Query = Folder.CreateItemQueryWithOptions(Options);
uint Count = await Query.GetItemCountAsync();
List <FileSystemStorageItemBase> Result = new List <FileSystemStorageItemBase>(Convert.ToInt32(Count));
for (uint i = 0; i < Count; i += 30)
{
IReadOnlyList <IStorageItem> CurrentList = await Query.GetItemsAsync(i, 30);
foreach (IStorageItem Item in CurrentList.Where((Item) => (Item.IsOfType(StorageItemTypes.Folder) && Filter.HasFlag(ItemFilters.Folder)) || (Item.IsOfType(StorageItemTypes.File) && Filter.HasFlag(ItemFilters.File))))
{
if (Item is StorageFolder SubFolder)
{
Result.Add(new FileSystemStorageFolder(SubFolder, await SubFolder.GetThumbnailBitmapAsync().ConfigureAwait(true), await SubFolder.GetModifiedTimeAsync().ConfigureAwait(true)));
}
else if (Item is StorageFile SubFile)
{
Result.Add(new FileSystemStorageFile(SubFile, await SubFile.GetThumbnailBitmapAsync().ConfigureAwait(true), await SubFile.GetSizeRawDataAsync().ConfigureAwait(true), await SubFile.GetModifiedTimeAsync().ConfigureAwait(true)));
}
}
}
return(Result);
}
else
{
return(new List <FileSystemStorageItemBase>(0));
}
}
catch
{
LogTracer.Log($"UWP API could not enum subitems in path: \"{Path}\"");
return(new List <FileSystemStorageItemBase>(0));
}
}
}
public async IAsyncEnumerable <FileSystemStorageItemBase> SearchAsync(string SearchWord, bool SearchInSubFolders = false, bool IncludeHiddenItem = false, bool IsRegexExpresstion = false, bool IgnoreCase = true, [EnumeratorCancellation] CancellationToken CancelToken = default)
{
if (WIN_Native_API.CheckLocationAvailability(Path))
{
List <FileSystemStorageItemBase> SearchResult = await Task.Run(() =>
{
return(WIN_Native_API.Search(Path, SearchWord, SearchInSubFolders, IncludeHiddenItem, IsRegexExpresstion, IgnoreCase, CancelToken));
});
foreach (FileSystemStorageItemBase Item in SearchResult)
{
yield return(Item);
if (CancelToken.IsCancellationRequested)
{
yield break;
}
}
}
else
{
if (await GetStorageItemAsync().ConfigureAwait(true) is StorageFolder Folder)
{
QueryOptions Options = new QueryOptions
{
FolderDepth = SearchInSubFolders ? FolderDepth.Deep : FolderDepth.Shallow,
IndexerOption = IndexerOption.UseIndexerWhenAvailable
};
Options.SetThumbnailPrefetch(Windows.Storage.FileProperties.ThumbnailMode.ListView, 150, Windows.Storage.FileProperties.ThumbnailOptions.UseCurrentScale);
Options.SetPropertyPrefetch(Windows.Storage.FileProperties.PropertyPrefetchOptions.BasicProperties, new string[] { "System.Size", "System.DateModified" });
if (!IsRegexExpresstion)
{
Options.ApplicationSearchFilter = $"System.FileName:*{SearchWord}*";
}
StorageItemQueryResult Query = Folder.CreateItemQueryWithOptions(Options);
uint FileCount = await Query.GetItemCountAsync();
for (uint Index = 0; Index < FileCount && !CancelToken.IsCancellationRequested; Index += 50)
{
IEnumerable <IStorageItem> Result = IsRegexExpresstion
? (await Query.GetItemsAsync(Index, 50)).Where((Item) => Regex.IsMatch(Item.Name, SearchWord, IgnoreCase ? RegexOptions.IgnoreCase : RegexOptions.None))
: (await Query.GetItemsAsync(Index, 50)).Where((Item) => Item.Name.Contains(SearchWord, IgnoreCase ? StringComparison.OrdinalIgnoreCase : StringComparison.Ordinal));
foreach (IStorageItem Item in Result)
{
switch (Item)
{
case StorageFolder SubFolder:
{
yield return(new FileSystemStorageFolder(SubFolder, await SubFolder.GetThumbnailBitmapAsync().ConfigureAwait(true), await SubFolder.GetModifiedTimeAsync().ConfigureAwait(true)));
break;
}
case StorageFile SubFile:
{
yield return(new FileSystemStorageFile(SubFile, await SubFile.GetThumbnailBitmapAsync().ConfigureAwait(true), await SubFile.GetSizeRawDataAsync().ConfigureAwait(true), await SubFile.GetModifiedTimeAsync().ConfigureAwait(true)));
break;
}
}
if (CancelToken.IsCancellationRequested)
{
yield break;
}
}
}
}
}
}