98 lines
3.5 KiB
C#
98 lines
3.5 KiB
C#
// Copyright (C) 2026, The Duplicati Team
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// https://duplicati.com, hello@duplicati.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#nullable enable
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using System.IO;
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using System.Threading;
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using System.Threading.Tasks;
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namespace Duplicati.Library.Utility;
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/// <summary>
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/// A stream that wraps a temporary file.
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/// The temporary file is automatically deleted when the stream is disposed.
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/// </summary>
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public class TempFileStream : StreamUtil.WrappingAsyncStream
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{
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/// <summary>
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/// The temporary file instance.
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/// </summary>
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private readonly TempFile tempFile;
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/// <summary>
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/// The stream for the temporary file.
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/// </summary>
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private readonly Stream stream;
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/// <summary>
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/// The path to the temporary file.
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/// </summary>
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public string Path => tempFile.Name;
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/// <summary>
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/// Creates a new TempFileStream instance.
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/// </summary>
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/// <param name="tempFile">The temporary file instance.</param>
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/// <param name="stream">The stream for the temporary file.</param>
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private TempFileStream(TempFile tempFile, Stream stream)
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: base(stream)
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{
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this.tempFile = tempFile;
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this.stream = stream;
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}
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/// <summary>
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/// Creates a new TempFileStream instance.
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/// </summary>
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/// <param name="tempFile">The temporary file instance.</param>
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/// <returns>The new TempFileStream instance.</returns>
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public static TempFileStream Create(TempFile tempFile)
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{
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return new TempFileStream(tempFile, File.Open(tempFile.Name, FileMode.Open, FileAccess.ReadWrite, FileShare.None));
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}
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/// <summary>
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/// Creates a new TempFileStream instance.
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/// </summary>
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/// <returns>The new TempFileStream instance.</returns>
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public static TempFileStream Create()
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{
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var tempFile = new TempFile();
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return new TempFileStream(tempFile, File.Open(tempFile.Name, FileMode.Open, FileAccess.ReadWrite, FileShare.None));
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}
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/// <inheritdoc/>
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protected override Task<int> ReadImplAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
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=> stream.ReadAsync(buffer, offset, count, cancellationToken);
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/// <inheritdoc/>
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protected override Task WriteImplAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
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=> stream.WriteAsync(buffer, offset, count, cancellationToken);
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/// <inheritdoc/>
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protected override void Dispose(bool disposing)
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{
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base.Dispose(disposing);
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stream.Dispose();
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tempFile.Dispose();
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}
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}
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