91 lines
3.1 KiB
C#
91 lines
3.1 KiB
C#
// (c) Copyright Ascensio System SIA 2010-2022
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//
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// This program is a free software product.
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// You can redistribute it and/or modify it under the terms
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// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
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// Foundation. In accordance with Section 7(a) of the GNU AGPL its Section 15 shall be amended
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// to the effect that Ascensio System SIA expressly excludes the warranty of non-infringement of
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// any third-party rights.
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//
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// This program is distributed WITHOUT ANY WARRANTY, without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For details, see
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// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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//
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// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
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//
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// The interactive user interfaces in modified source and object code versions of the Program must
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// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
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//
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// Pursuant to Section 7(b) of the License you must retain the original Product logo when
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// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
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// trademark law for use of our trademarks.
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//
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// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
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// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
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// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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namespace ASC.Data.Storage;
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public class ProgressStream : Stream
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{
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public override bool CanRead => _stream.CanRead;
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public override bool CanSeek => _stream.CanSeek;
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public override bool CanWrite => _stream.CanWrite;
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public override long Length => _length;
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public override long Position
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{
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get => _stream.Position;
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set => _stream.Position = value;
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}
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private readonly Stream _stream;
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private long _length = long.MaxValue;
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public ProgressStream(Stream stream)
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{
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_stream = stream ?? throw new ArgumentNullException(nameof(stream));
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try
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{
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_length = stream.Length;
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}
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catch (Exception) { }
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}
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public event Action<ProgressStream, int> OnReadProgress;
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public void InvokeOnReadProgress(int progress)
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{
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OnReadProgress?.Invoke(this, progress);
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}
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public override void Flush()
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{
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_stream.Flush();
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}
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public override long Seek(long offset, SeekOrigin origin)
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{
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return _stream.Seek(offset, origin);
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}
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public override void SetLength(long value)
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{
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_stream.SetLength(value);
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_length = value;
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}
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public override int Read(byte[] buffer, int offset, int count)
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{
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var readed = _stream.Read(buffer, offset, count);
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OnReadProgress(this, (int)(_stream.Position / (double)_length * 100));
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return readed;
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}
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public override void Write(byte[] buffer, int offset, int count)
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{
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_stream.Write(buffer, offset, count);
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}
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}
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