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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// System.AppContext.GetData is not available in these frameworks
#nullable enable
#if !NETFRAMEWORK
using System;
using System.Diagnostics;
using System.IO;
using System.Runtime.InteropServices;
namespace Microsoft.Extensions.CommandLineUtils;
/// <summary>
/// Utilities for finding the "dotnet.exe" file from the currently running .NET Core application
/// </summary>
internal static class DotNetMuxer
{
private const string MuxerName = "dotnet";
static DotNetMuxer()
{
MuxerPath = TryFindMuxerPath(Process.GetCurrentProcess().MainModule?.FileName);
}
/// <summary>
/// The full filepath to the .NET Core muxer.
/// </summary>
public static string? MuxerPath { get; }
/// <summary>
/// Finds the full filepath to the .NET Core muxer,
/// or returns a string containing the default name of the .NET Core muxer ('dotnet').
/// </summary>
/// <returns>The path or a string named 'dotnet'.</returns>
public static string MuxerPathOrDefault()
=> MuxerPath ?? MuxerName;
internal static string? TryFindMuxerPath(string? mainModule)
{
var fileName = MuxerName;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
fileName += ".exe";
}
if (!string.IsNullOrEmpty(mainModule)
&& string.Equals(Path.GetFileName(mainModule!), fileName, StringComparison.OrdinalIgnoreCase))
{
return mainModule;
}
return null;
}
}
#endif
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