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81 lines
3.0 KiB
C#
81 lines
3.0 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : NonClosableStream.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Compression.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Overrides MemoryStream to ignore standard close requests.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2023 Natalia Portillo
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// ****************************************************************************/
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using System.Diagnostics.CodeAnalysis;
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using System.IO;
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using Aaru.Helpers;
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namespace Aaru.Compression;
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/// <inheritdoc />
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/// <summary>Creates a MemoryStream that ignores close commands</summary>
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[SuppressMessage("ReSharper", "UnusedMember.Global")]
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sealed class NonClosableStream : Stream
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{
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readonly MemoryStream _baseStream;
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internal NonClosableStream(byte[] buffer) => _baseStream = new MemoryStream(buffer);
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internal NonClosableStream() => _baseStream = new MemoryStream();
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public override bool CanRead => _baseStream.CanRead;
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public override bool CanSeek => _baseStream.CanSeek;
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public override bool CanWrite => _baseStream.CanWrite;
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public override long Length => _baseStream.Length;
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public override long Position
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{
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get => _baseStream.Position;
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set => _baseStream.Position = value;
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}
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public override void Flush() => _baseStream.Flush();
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public override int Read(byte[] buffer, int offset, int count) => _baseStream.EnsureRead(buffer, offset, count);
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public override long Seek(long offset, SeekOrigin origin) => _baseStream.Seek(offset, origin);
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public override void SetLength(long value) => _baseStream.SetLength(value);
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public override void Write(byte[] buffer, int offset, int count) => _baseStream.Write(buffer, offset, count);
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public override void Close()
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{
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// Do nothing
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}
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internal byte[] GetBuffer() => _baseStream.GetBuffer();
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internal byte[] ToArray() => _baseStream.ToArray();
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internal void ReallyClose() => _baseStream.Close();
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} |