EmbedAppNameInHost.cs

// Copyright (c) .NET Foundation and contributors. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

using Microsoft.Build.Framework;
using System.IO;
using System.Text;

namespace Microsoft.NET.Build.Tasks
{
    /// <summary>
    /// Embeds the App Name into the AppHost.exe  
    /// </summary>
    public class EmbedAppNameInHost : TaskBase
    {
        [Required]
        public string AppHostSourcePath { get; set; }

        [Required]
        public string AppHostDestinationDirectoryPath { get; set; }

        [Required]
        public string AppBinaryName { get; set; }

        [Output]
        public string ModifiedAppHostPath { get; set; }

        protected override void ExecuteCore()
        {
            var hostExtension = Path.GetExtension(AppHostSourcePath);
            var appbaseName = Path.GetFileNameWithoutExtension(AppBinaryName);
            var destinationDirectory = Path.GetFullPath(AppHostDestinationDirectoryPath);
            ModifiedAppHostPath = Path.Combine(destinationDirectory, $"{appbaseName}{hostExtension}");

            AppHost.Create(
                AppHostSourcePath,
                ModifiedAppHostPath,
                AppBinaryName);
        }
    }
}