dotnet-migrate

src/dotnet/AppliedOptionExtensions.cs

@@ -0,0 +1,21 @@
+// 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 System;
+using System.Linq;
+using Microsoft.DotNet.Cli.CommandLine;
+
+namespace Microsoft.DotNet.Cli
+{
+    public static class AppliedOptionExtensions
+    {
+        public static T ValueOrDefault<T>(this AppliedOption parseResult, string alias)
+        {
+            return parseResult
+                .AppliedOptions
+                .Where(o => o.HasAlias(alias))
+                .Select(o => o.Value<T>())
+                .SingleOrDefault();
+        }
+    }
+}

src/dotnet/commands/dotnet-migrate/MigrateCommandParser.cs

@@ -1,29 +1,48 @@
 // 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 System.Linq;
 using Microsoft.DotNet.Cli.CommandLine;
+using Microsoft.DotNet.Tools.Migrate;
+using LocalizableStrings = Microsoft.DotNet.Tools.Migrate.LocalizableStrings;
 
 namespace Microsoft.DotNet.Cli
 {
     internal static class MigrateCommandParser
     {
         public static Command Migrate() =>
-            Create.Command("migrate",
-                           ".NET Migrate Command",
-                           CommonOptions.HelpOption(),
-                           Create.Option("-t|--template-file",
-                                         "Base MSBuild template to use for migrated app. The default is the project included in dotnet new."),
-                           Create.Option("-v|--sdk-package-version",
-                                         "The version of the SDK package that will be referenced in the migrated app. The default is the version of the SDK in dotnet new."),
-                           Create.Option("-x|--xproj-file",
-                                         "The path to the xproj file to use. Required when there is more than one xproj in a project directory."),
-                           Create.Option("-s|--skip-project-references",
-                                         "Skip migrating project references. By default, project references are migrated recursively."),
-                           Create.Option("-r|--report-file",
-                                         "Output migration report to the given file in addition to the console."),
-                           Create.Option("--format-report-file-json",
-                                         "Output migration report file as json rather than user messages."),
-                           Create.Option("--skip-backup",
-                                         "Skip moving project.json, global.json, and *.xproj to a `backup` directory after successful migration."));
+            Create.Command(
+                "migrate",
+                ".NET Migrate Command",
+                Accept.ZeroOrOneArgument
+                    .MaterializeAs(o =>
+                    {            
+                        return new MigrateCommand(
+                            o.ValueOrDefault<string>("--template-file"),
+                            o.Arguments.FirstOrDefault(),
+                            o.ValueOrDefault<string>("--sdk-package-version"),
+                            o.ValueOrDefault<string>("--xproj-file"),
+                            o.ValueOrDefault<string>("--report-file"),
+                            o.ValueOrDefault<bool>("--skip-project-references"),
+                            o.ValueOrDefault<bool>("--format-report-file-json"),
+                            o.ValueOrDefault<bool>("--skip-backup"));
+                    })
+                .With(name: LocalizableStrings.CmdProjectArgument,
+                    description: LocalizableStrings.CmdProjectArgumentDescription),
+                CommonOptions.HelpOption(),
+                Create.Option("-t|--template-file",
+                                LocalizableStrings.CmdTemplateDescription),
+                Create.Option("-v|--sdk-package-version",
+                                LocalizableStrings.CmdVersionDescription),
+                Create.Option("-x|--xproj-file",
+                                LocalizableStrings.CmdXprojFileDescription),
+                Create.Option("-s|--skip-project-references",
+                                LocalizableStrings.CmdSkipProjectReferencesDescription),
+                Create.Option("-r|--report-file",
+                                LocalizableStrings.CmdReportFileDescription),
+                Create.Option("--format-report-file-json",
+                                LocalizableStrings.CmdReportOutputDescription),
+                Create.Option("--skip-backup",
+                                LocalizableStrings.CmdSkipBackupDescription));
     }
 }

src/dotnet/commands/dotnet-migrate/Program.cs

@@ -2,13 +2,32 @@
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
 using System;
+using System.Collections.Generic;
+using Microsoft.DotNet.Cli;
 using Microsoft.DotNet.Cli.CommandLine;
 using Microsoft.DotNet.Cli.Utils;
+using Parser = Microsoft.DotNet.Cli.Parser;
 
 namespace Microsoft.DotNet.Tools.Migrate
 {
     public partial class MigrateCommand
     {
+        public static MigrateCommand FromArgs(string[] args, string msbuildPath = null)
+        {
+            var msbuildArgs = new List<string>();
+
+            var parser = Parser.Instance;
+
+            var result = parser.ParseFrom("dotnet migrate", args);
+
+            Reporter.Output.WriteLine(result.Diagram());
+
+            result.ShowHelpIfRequested();
+
+            return result["dotnet"]["migrate"].Value<MigrateCommand>();
+        }
+
+
         public static int Run(string[] args)
         {
 
@@ -19,64 +38,19 @@ namespace Microsoft.DotNet.Tools.Migrate
 
             DebugHelper.HandleDebugSwitch(ref args);
 
-            CommandLineApplication app = new CommandLineApplication();
-            app.Name = "dotnet migrate";
-            app.FullName = LocalizableStrings.AppFullName;
-            app.Description = LocalizableStrings.AppDescription;
-            app.HandleResponseFiles = true;
-            app.HelpOption("-h|--help");
-
-            CommandArgument projectArgument = app.Argument(
-                $"<{LocalizableStrings.CmdProjectArgument}>",
-                LocalizableStrings.CmdProjectArgumentDescription);
-
-            CommandOption template = app.Option(
-                "-t|--template-file",
-                LocalizableStrings.CmdTemplateDescription,
-                CommandOptionType.SingleValue);
-            CommandOption sdkVersion = app.Option(
-                "-v|--sdk-package-version", 
-                LocalizableStrings.CmdVersionDescription, 
-                CommandOptionType.SingleValue);
-            CommandOption xprojFile = app.Option(
-                "-x|--xproj-file", 
-                LocalizableStrings.CmdXprojFileDescription, 
-                CommandOptionType.SingleValue);
-            CommandOption skipProjectReferences = app.Option(
-                "-s|--skip-project-references", 
-                LocalizableStrings.CmdSkipProjectReferencesDescription, 
-                CommandOptionType.BoolValue);
-
-            CommandOption reportFile = app.Option(
-                "-r|--report-file", 
-                LocalizableStrings.CmdReportFileDescription, 
-                CommandOptionType.SingleValue);
-            CommandOption structuredReportOutput = app.Option(
-                "--format-report-file-json", 
-                LocalizableStrings.CmdReportOutputDescription, 
-                CommandOptionType.BoolValue);
-            CommandOption skipBackup = app.Option("--skip-backup", 
-                LocalizableStrings.CmdSkipBackupDescription, 
-                CommandOptionType.BoolValue);
-
-            app.OnExecute(() =>
+            MigrateCommand cmd;
+            try
             {
-                MigrateCommand migrateCommand = new MigrateCommand(
-                    template.Value(),
-                    projectArgument.Value,
-                    sdkVersion.Value(),
-                    xprojFile.Value(),
-                    reportFile.Value(),
-                    skipProjectReferences.BoolValue.HasValue ? skipProjectReferences.BoolValue.Value : false,
-                    structuredReportOutput.BoolValue.HasValue ? structuredReportOutput.BoolValue.Value : false,
-                    skipBackup.BoolValue.HasValue ? skipBackup.BoolValue.Value : false);
-
-                return migrateCommand.Execute();
-            });
+                cmd = FromArgs(args);
+            }
+            catch (CommandCreationException e)
+            {
+                return e.ExitCode;
+            }
 
             try
             {
-                return app.Execute(args);
+                return cmd.Execute();
             }
             catch (GracefulException e)
             {