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64 lines
2.1 KiB
C#
64 lines
2.1 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System.IO;
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using System.Threading.Tasks;
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using Android.Content;
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using Android.Net;
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using Android.Provider;
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using osu.Game.Database;
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namespace osu.Android
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{
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public class AndroidImportTask : ImportTask
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{
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private readonly ContentResolver contentResolver;
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private readonly Uri uri;
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private AndroidImportTask(Stream stream, string filename, ContentResolver contentResolver, Uri uri)
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: base(stream, filename)
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{
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this.contentResolver = contentResolver;
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this.uri = uri;
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}
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public override void DeleteFile()
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{
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contentResolver.Delete(uri, null, null);
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}
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public static async Task<AndroidImportTask?> Create(ContentResolver contentResolver, Uri uri)
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{
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// there are more performant overloads of this method, but this one is the most backwards-compatible
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// (dates back to API 1).
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var cursor = contentResolver.Query(uri, null, null, null, null);
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if (cursor == null)
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return null;
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if (!cursor.MoveToFirst())
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return null;
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int filenameColumn = cursor.GetColumnIndex(IOpenableColumns.DisplayName);
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string filename = cursor.GetString(filenameColumn) ?? uri.Path ?? string.Empty;
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// SharpCompress requires archive streams to be seekable, which the stream opened by
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// OpenInputStream() seems to not necessarily be.
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// copy to an arbitrary-access memory stream to be able to proceed with the import.
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var copy = new MemoryStream();
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using (var stream = contentResolver.OpenInputStream(uri))
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{
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if (stream == null)
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return null;
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await stream.CopyToAsync(copy).ConfigureAwait(false);
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}
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return new AndroidImportTask(copy, filename, contentResolver, uri);
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}
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}
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}
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