43 lines
1.6 KiB
C#
43 lines
1.6 KiB
C#
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// Copyright (c) .NET Foundation and contributors. All rights reserved.
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// Licensed under the MIT license. See LICENSE file in the project root for full license information.
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using System;
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using System.Collections.Generic;
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using System.Collections.Immutable;
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using System.Diagnostics;
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using System.IO;
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namespace Microsoft.DotNet.Tools.Test.Utilities
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{
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/// <summary>
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/// The collection of extension methods for the <see cref="ImmutableArray{T}"/> type
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/// </summary>
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public static class ImmutableArrayTestExtensions
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{
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/// <summary>
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/// Writes read-only array of bytes to the specified file.
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/// </summary>
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/// <param name="bytes">Data to write to the file.</param>
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/// <param name="path">File path.</param>
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internal static void WriteToFile(this ImmutableArray<byte> bytes, string path)
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{
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Debug.Assert(!bytes.IsDefault);
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const int bufferSize = 4096;
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using (FileStream fileStream = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read, bufferSize))
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{
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// PERF: Consider using an ObjectPool<byte[]> here
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byte[] buffer = new byte[Math.Min(bufferSize, bytes.Length)];
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int offset = 0;
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while (offset < bytes.Length)
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{
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int length = Math.Min(bufferSize, bytes.Length - offset);
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bytes.CopyTo(offset, buffer, 0, length);
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fileStream.Write(buffer, 0, length);
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offset += length;
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}
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}
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}
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}
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}
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