Add dotnet sln and list commands

src/Cake.Common/Tools/DotNet/DotNetAliases.cs

@@ -10,6 +10,7 @@
 using Cake.Common.Tools.DotNet.Clean;
 using Cake.Common.Tools.DotNet.Execute;
 using Cake.Common.Tools.DotNet.Format;
+using Cake.Common.Tools.DotNet.List;
 using Cake.Common.Tools.DotNet.MSBuild;
 using Cake.Common.Tools.DotNet.NuGet.Delete;
 using Cake.Common.Tools.DotNet.NuGet.Push;
@@ -19,6 +20,7 @@
 using Cake.Common.Tools.DotNet.Restore;
 using Cake.Common.Tools.DotNet.Run;
 using Cake.Common.Tools.DotNet.SDKCheck;
+using Cake.Common.Tools.DotNet.Sln;
 using Cake.Common.Tools.DotNet.Test;
 using Cake.Common.Tools.DotNet.Tool;
 using Cake.Common.Tools.DotNet.VSTest;
@@ -1307,6 +1309,145 @@ public static void DotNetMSBuild(this ICakeContext context, string projectOrDire
             builder.Build(projectOrDirectory, settings);
         }
 
+        /// <summary>
+        /// Adds a project to a solution
+        /// </summary>
+        /// <param name="context">The context.</param>
+        /// <param name="solution">Solution file to add to.  Uses working directory if null.</param>
+        /// <param name="project">Project file to add.</param>
+        /// <param name="solutionFolder">Solution folder name to add the reference to. Created if it doesn't exist.  Adds project to solution root if null.</param>
+        /// <param name="settings">The settings.</param>
+        /// <example>
+        /// <code>
+        /// DotNetSlnAdd("MySolution.sln", "MyProject.csproj", null, settings);
+        /// 
+        /// DotNetSlnAdd("MySolution.sln", "MyProject.csproj", "MySolutionFolder", settings);
+        /// </code>
+        /// </example>
+        /// <remarks>
+        /// If a solution file is not specified, dotnet searches the current working directory for a solution file and uses that file.
+        /// </remarks>
+        [CakeMethodAlias]
+        [CakeAliasCategory("Sln")]
+        [CakeNamespaceImport("Cake.Common.Tools.DotNet.Sln")]
+        public static void DotNetSlnAdd(this ICakeContext context, string solution, string project,
+            string solutionFolder, DotNetSlnSettings settings)
+        {
+            if (context is null)
+            {
+                throw new ArgumentNullException(nameof(context));
+            }
+
+            if (settings is null)
+            {
+                settings = new DotNetSlnSettings();
+            }
+
+            var executor = new DotNetSln(context.FileSystem, context.Environment, context.ProcessRunner, context.Tools);
+            executor.Add(solution, project, solutionFolder, settings);
+        }
+
+        /// <summary>
+        /// Removes a project to a solution
+        /// </summary>
+        /// <param name="context">The context.</param>
+        /// <param name="solution">Solution file to remove from.  Searches working directory if null.</param>
+        /// <param name="project">Project file to remove.</param>
+        /// <param name="settings">The settings.</param>
+        /// <example>
+        /// <code>
+        /// DotNetSlnRemove("MySolution.sln", "MyProject.csproj", settings);
+        /// </code>
+        /// </example>
+        /// <remarks>
+        /// If a solution file is not specified, dotnet searches the current working directory for a solution file and uses that file.
+        /// </remarks>
+        [CakeMethodAlias]
+        [CakeAliasCategory("Sln")]
+        [CakeNamespaceImport("Cake.Common.Tools.DotNet.Sln")]
+        public static void DotNetSlnRemove(this ICakeContext context, string solution, string project,
+            DotNetSlnSettings settings)
+        {
+            if (context is null)
+            {
+                throw new ArgumentNullException(nameof(context));
+            }
+
+            if (settings is null)
+            {
+                settings = new DotNetSlnSettings();
+            }
+
+            var executor = new DotNetSln(context.FileSystem, context.Environment, context.ProcessRunner, context.Tools);
+            executor.Remove(solution, project, settings);
+        }
+
+        /// <summary>
+        /// Lists project references in a solution
+        /// </summary>
+        /// <param name="context">The context.</param>
+        /// <param name="solution">Solution file to add to.  Uses working directory if null.</param>
+        /// <param name="settings">The settings.</param>
+        /// <returns>An array of absolute paths to any references found.  These can be .csproj, .fsproj, .dwproj files etc.</returns>
+        /// <example>
+        /// <code>
+        /// DotNetSlnList("MySolution.sln", settings);
+        /// </code>
+        /// </example>
+        /// <remarks>
+        /// If a solution file is not specified, dotnet searches the current working directory for a solution file and uses that file.
+        /// </remarks>
+        [CakeMethodAlias]
+        [CakeAliasCategory("Sln")]
+        [CakeNamespaceImport("Cake.Common.Tools.DotNet.Sln")]
+        public static string[] DotNetSlnList(this ICakeContext context, string solution, DotNetSlnSettings settings)
+        {
+            if (context is null)
+            {
+                throw new ArgumentNullException(nameof(context));
+            }
+
+            if (settings is null)
+            {
+                settings = new DotNetSlnSettings();
+            }
+
+            var executor = new DotNetSln(context.FileSystem, context.Environment, context.ProcessRunner, context.Tools);
+            return executor.List(solution, settings);
+        }
+
+
+        /// <summary>
+        /// Given a project file, lists project references.
+        /// </summary>
+        /// <param name="context">The context.</param>
+        /// <param name="project">The project to inspect for project references.</param>
+        /// <param name="settings">The settings.</param>
+        /// <returns>An array of absolute paths to any project references found.  These can be .csproj, .fsproj, .dwproj files etc.</returns>
+        /// <example>
+        /// <code>
+        /// DotNetListProjectReferences("MyProject.csproj", settings);
+        /// </code>
+        /// </example>
+        [CakeMethodAlias]
+        [CakeAliasCategory("List")]
+        [CakeNamespaceImport("Cake.Common.Tools.DotNet.List")]
+        public static string[] DotNetListProjectReferences(ICakeContext context, string project, DotNetListSettings settings)
+        {
+            if (context is null)
+            {
+                throw new ArgumentNullException(nameof(context));
+            }
+
+            if (settings is null)
+            {
+                settings = new DotNetListSettings();
+            }
+
+            var executor = new DotNetList(context.FileSystem, context.Environment, context.ProcessRunner,
+                context.Tools);
+            return executor.ListProjectReferences(project, settings);
+        }
         /// <summary>
         /// Test one or more projects specified by a path or glob pattern using the VS Test host runner.
         /// </summary>

src/Cake.Common/Tools/DotNet/List/DotNetList.cs

@@ -0,0 +1,86 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.IO;
+using System.Linq;
+using Cake.Common.Tools.DotNet.Format;
+using Cake.Core;
+using Cake.Core.IO;
+using Cake.Core.Tooling;
+
+namespace Cake.Common.Tools.DotNet.List
+{
+    /// <summary>
+    /// 'dotnet list' commands
+    /// </summary>
+    public sealed class DotNetList : DotNetTool<DotNetListSettings>
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="DotNetList" /> class.
+        /// </summary>
+        /// <param name="fileSystem">The file system.</param>
+        /// <param name="environment">The environment.</param>
+        /// <param name="processRunner">The process runner.</param>
+        /// <param name="tools">The tool locator.</param>
+        public DotNetList(
+            IFileSystem fileSystem,
+            ICakeEnvironment environment,
+            IProcessRunner processRunner,
+            IToolLocator tools) : base(fileSystem, environment, processRunner, tools)
+        {
+        }
+
+        /// <summary>
+        /// Given a project, outputs all project references
+        /// </summary>
+        /// <param name="project">The target project path.</param>
+        /// <param name="settings">The settings.</param>
+        public string[] ListProjectReferences(string project, DotNetListSettings settings)
+        {
+            if (project == null)
+            {
+                throw new ArgumentNullException(nameof(project));
+            }
+
+            if (settings == null)
+            {
+                throw new ArgumentNullException(nameof(settings));
+            }
+
+            var references = Array.Empty<string>();
+            Run(settings, GetListProjectReferencesArguments(project, settings),
+                new ProcessSettings { RedirectStandardOutput = true },
+                process =>
+                {
+                    var projDir = new FileInfo(project).DirectoryName;
+
+                    references =
+                        process.GetStandardOutput().Skip(2)
+                            .Select(p =>
+                                System.IO.Path.GetFullPath(System.IO.Path.Join(projDir, p)).Replace('/', '\\'))
+                            .ToArray();
+                });
+
+            return references;
+        }
+
+        private ProcessArgumentBuilder GetListProjectReferencesArguments(string project, DotNetListSettings settings)
+        {
+            var builder = CreateArgumentBuilder(settings);
+
+            builder.Append("list");
+
+            // Specific path?
+            if (project != null)
+            {
+                builder.AppendQuoted(project);
+            }
+
+            builder.Append("reference");
+
+            return builder;
+        }
+    }
+}

src/Cake.Common/Tools/DotNet/List/DotNetListSettings.cs

@@ -0,0 +1,13 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace Cake.Common.Tools.DotNet.List
+{
+    /// <summary>
+    /// DotNetListSettings class
+    /// </summary>
+    public class DotNetListSettings : DotNetSettings
+    {
+    }
+}