feat: remove spectre.console

Replace `Spectre.Console.Cli` with `System.CommandLine`

Directory.Packages.props

@@ -5,7 +5,6 @@
   <ItemGroup>
     <PackageVersion Include="Microsoft.SourceLink.Gitea" Version="10.0.102" />
     <PackageVersion Include="TUnit" Version="1.11.51" />
-    <PackageVersion Include="Spectre.Console" Version="0.53.1" />
-    <PackageVersion Include="Spectre.Console.Cli" Version="0.53.1" />
+    <PackageVersion Include="System.CommandLine" Version="2.0.7" />
   </ItemGroup>
 </Project>

src/process.dummy.app/AsyncOutputCommand.cs

@@ -1,13 +0,0 @@
-// Copyright (c) The Geekeey Authors
-// SPDX-License-Identifier: EUPL-1.2
-
-using Spectre.Console.Cli;
-
-internal abstract class AsyncOutputCommand<T> : AsyncCommand<T> where T : OutputCommandSettings
-{
-}
-
-internal abstract class OutputCommandSettings : CommandSettings
-{
-	[CommandOption("--target")] public OutputTarget Target { get; init; } = OutputTarget.StdOut;
-}

src/process.dummy.app/Geekeey.Process.Dummy.App.csproj

@@ -11,7 +11,6 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Spectre.Console" PrivateAssets="compile" />
-    <PackageReference Include="Spectre.Console.Cli" PrivateAssets="compile" />
+    <PackageReference Include="System.CommandLine" PrivateAssets="compile" />
   </ItemGroup>
 </Project>

src/process.dummy.app/Output.cs

@@ -3,32 +3,17 @@
 
 internal sealed class Output : IDisposable
 {
-	private readonly CancellationTokenSource _cts = new();
-
-	public Output()
-	{
-		Console.CancelKeyPress += Cancel;
-	}
-
 	public StreamReader Stdin { get; } = new(Console.OpenStandardInput(), leaveOpen: false);
 
 	public StreamWriter Stdout { get; } = new(Console.OpenStandardOutput(), leaveOpen: false);
 
 	public StreamWriter Stderr { get; } = new(Console.OpenStandardError(), leaveOpen: false);
 
-	public CancellationToken CancellationToken => _cts.Token;
-
 	public static Output Connect()
 	{
 		return new Output();
 	}
 
-	private void Cancel(object? sender, ConsoleCancelEventArgs args)
-	{
-		args.Cancel = true;
-		_cts.Cancel();
-	}
-
 	public void Dispose()
 	{
 		Stdout.BaseStream.Flush();
@@ -36,7 +21,5 @@ internal sealed class Output : IDisposable
 		Stderr.BaseStream.Flush();
 		Stderr.Dispose();
 		Stdin.Dispose();
-		Console.CancelKeyPress -= Cancel;
-		_cts.Dispose();
 	}
 }

src/process.dummy.app/Program.cs

@@ -1,11 +1,10 @@
 // Copyright (c) The Geekeey Authors
 // SPDX-License-Identifier: EUPL-1.2
 
+using System.CommandLine;
 using System.Reflection;
 using System.Runtime.InteropServices;
 
-using Spectre.Console.Cli;
-
 namespace Geekeey.Process.Testing.Fixture;
 
 public static class Program
@@ -18,28 +17,36 @@ public static class Program
 
 	public static string FilePath { get; } = Path.ChangeExtension(AssemblyPath, FileExtension);
 
-	private static Task<int> Main(string[] args)
+	private static async Task<int> Main(string[] args)
 	{
 		Environment.SetEnvironmentVariable("DOTNET_SYSTEM_CONSOLE_ALLOW_ANSI_COLOR_REDIRECTION", "false");
-		var app = new CommandApp();
-		app.Configure(Configuration);
-		return app.RunAsync(args);
 
-		static void Configuration(IConfigurator configuration)
+		var app = new RootCommand
 		{
-			configuration.AddCommand<EchoCommand>("echo");
-			configuration.AddCommand<EchoStdinCommand>("echo-stdin");
-			configuration.AddCommand<EnvironmentCommand>("env");
-			configuration.AddCommand<WorkingDirectoryCommand>("cwd");
-			configuration.AddCommand<WorkingDirectoryCommand>("cwd");
-			configuration.AddCommand<ExitCommand>("exit");
-			configuration.AddCommand<LengthCommand>("length");
-			configuration.AddCommand<SleepCommand>("sleep");
-			configuration.AddBranch("generate", static generate =>
+			new EchoCommand(),
+			new EchoStdinCommand(),
+			new EnvironmentCommand(),
+			new WorkingDirectoryCommand(),
+			new ExitCommand(),
+			new LengthCommand(),
+			new SleepCommand(),
+			new Command("generate")
 			{
-				generate.AddCommand<GenerateBlobCommand>("blob");
-				generate.AddCommand<GenerateClobCommand>("clob");
-			});
+				new GenerateBlobCommand(), //
+				new GenerateClobCommand()
+			}
+		};
+
+		var cts = new CancellationTokenSource();
+		using (PosixSignalRegistration.Create(PosixSignal.SIGINT, Cancel))
+		{
+			return await app.Parse(args).InvokeAsync(configuration: null, cts.Token);
+		}
+
+		void Cancel(PosixSignalContext context)
+		{
+			context.Cancel = true;
+			cts.Cancel();
 		}
 	}
 }

src/process.dummy.app/_commands/EchoCommand.cs

@@ -1,23 +1,29 @@
 // Copyright (c) The Geekeey Authors
 // SPDX-License-Identifier: EUPL-1.2
 
-using Spectre.Console.Cli;
+using System.CommandLine;
 
-internal sealed class EchoCommand : AsyncOutputCommand<EchoCommand.Settings>
+internal sealed class EchoCommand : Command
 {
-	public sealed class Settings : OutputCommandSettings
+	private static readonly Option<OutputTarget> Target = new("--target") { DefaultValueFactory = _ => OutputTarget.StdOut };
+	private static readonly Option<string> Separator = new("--separator") { DefaultValueFactory = _ => " " };
+	private static readonly Argument<string[]> Items = new("line") { Arity = ArgumentArity.ZeroOrMore, DefaultValueFactory = _ => [] };
+
+	public EchoCommand() : base("echo")
 	{
-		[CommandOption("--separator <char>")] public string Separator { get; init; } = " ";
-		[CommandArgument(0, "[line]")] public string[] Items { get; init; } = [];
+		Add(Target);
+		Add(Separator);
+		Add(Items);
+		SetAction(ExecuteAsync);
 	}
 
-	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	public async Task<int> ExecuteAsync(ParseResult result, CancellationToken cancellationToken)
 	{
 		using var output = Output.Connect();
 
-		foreach (var writer in output.GetWriters(settings.Target))
+		foreach (var writer in output.GetWriters(result.GetValue(Target)))
 		{
-			await writer.WriteLineAsync(string.Join(settings.Separator, settings.Items));
+			await writer.WriteLineAsync(string.Join(result.GetRequiredValue(Separator), result.GetRequiredValue(Items)));
 		}
 
 		return 0;

src/process.dummy.app/_commands/EchoStdinCommand.cs

@@ -2,25 +2,30 @@
 // SPDX-License-Identifier: EUPL-1.2
 
 using System.Buffers;
+using System.CommandLine;
 
-using Spectre.Console.Cli;
+internal sealed class EchoStdinCommand : Command
+{
+	private static readonly Option<OutputTarget> Target = new("--target") { DefaultValueFactory = _ => OutputTarget.StdOut };
+	private static readonly Option<long> Length = new("--length") { DefaultValueFactory = _ => long.MaxValue };
 
-internal sealed class EchoStdinCommand : AsyncOutputCommand<EchoStdinCommand.Settings>
+	public EchoStdinCommand() : base("echo-stdin")
 	{
-	public sealed class Settings : OutputCommandSettings
-	{
-		[CommandOption("--length")] public long Length { get; init; } = long.MaxValue;
+		Add(Target);
+		Add(Length);
+		SetAction(ExecuteAsync);
 	}
 
-	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	public async Task<int> ExecuteAsync(ParseResult result, CancellationToken cancellationToken)
 	{
 		using var output = Output.Connect();
 		using var buffer = MemoryPool<byte>.Shared.Rent(81920);
 
 		var count = 0L;
-		while (count < settings.Length)
+		var max = result.GetRequiredValue(Length);
+		while (count < max)
 		{
-			var bytesWanted = (int)Math.Min(buffer.Memory.Length, settings.Length - count);
+			var bytesWanted = (int)Math.Min(buffer.Memory.Length, max - count);
 
 			var bytesRead = await output.Stdin.BaseStream.ReadAsync(buffer.Memory[..bytesWanted], cancellationToken);
 			if (bytesRead <= 0)
@@ -28,7 +33,7 @@ internal sealed class EchoStdinCommand : AsyncOutputCommand<EchoStdinCommand.Set
 				break;
 			}
 
-			foreach (var writer in output.GetWriters(settings.Target))
+			foreach (var writer in output.GetWriters(result.GetRequiredValue(Target)))
 			{
 				await writer.BaseStream.WriteAsync(buffer.Memory[..bytesRead], cancellationToken);
 			}

src/process.dummy.app/_commands/EnvironmentCommand.cs

@@ -1,24 +1,29 @@
 // Copyright (c) The Geekeey Authors
 // SPDX-License-Identifier: EUPL-1.2
 
-using Spectre.Console.Cli;
+using System.CommandLine;
 
-internal sealed class EnvironmentCommand : AsyncOutputCommand<EnvironmentCommand.Settings>
+internal sealed class EnvironmentCommand : Command
 {
-	public sealed class Settings : OutputCommandSettings
+	private static readonly Option<OutputTarget> Target = new("--target") { DefaultValueFactory = _ => OutputTarget.StdOut };
+	private static readonly Argument<string[]> Variables = new("argument") { Arity = ArgumentArity.ZeroOrMore, DefaultValueFactory = _ => [] };
+
+	public EnvironmentCommand() : base("env")
 	{
-		[CommandArgument(0, "<ARGUMENT>")] public string[] Variables { get; init; } = [];
+		Add(Target);
+		Add(Variables);
+		SetAction(ExecuteAsync);
 	}
 
-	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	public async Task<int> ExecuteAsync(ParseResult result, CancellationToken cancellationToken)
 	{
 		using var output = Output.Connect();
 
-		foreach (var name in settings.Variables)
+		foreach (var name in result.GetRequiredValue(Variables))
 		{
 			var value = Environment.GetEnvironmentVariable(name) ?? string.Empty;
 
-			foreach (var writer in output.GetWriters(settings.Target))
+			foreach (var writer in output.GetWriters(result.GetRequiredValue(Target)))
 			{
 				await writer.WriteLineAsync(value);
 			}

src/process.dummy.app/_commands/ExitCommand.cs

@@ -1,21 +1,23 @@
 // Copyright (c) The Geekeey Authors
 // SPDX-License-Identifier: EUPL-1.2
 
-using Spectre.Console.Cli;
+using System.CommandLine;
 
-internal sealed class ExitCommand : AsyncCommand<ExitCommand.Settings>
+internal sealed class ExitCommand : Command
 {
-	public sealed class Settings : CommandSettings
+	private static readonly Argument<int> Code = new("code");
+
+	public ExitCommand() : base("exit")
 	{
-		[CommandArgument(1, "<code>")] public int Code { get; init; }
+		Add(Code);
+		SetAction(ExecuteAsync);
 	}
 
-	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	public async Task<int> ExecuteAsync(ParseResult result, CancellationToken cancellationToken)
 	{
 		using var output = Output.Connect();
-
-		await output.Stderr.WriteLineAsync($"Exit code set to {settings.Code}");
-
-		return settings.Code;
+		var code = result.GetValue(Code);
+		await output.Stderr.WriteLineAsync($"Exit code set to {code}");
+		return code;
 	}
 }

src/process.dummy.app/_commands/GenerateBlobCommand.cs

@@ -2,32 +2,38 @@
 // SPDX-License-Identifier: EUPL-1.2
 
 using System.Buffers;
+using System.CommandLine;
 
-using Spectre.Console.Cli;
-
-internal sealed class GenerateBlobCommand : AsyncOutputCommand<GenerateBlobCommand.Settings>
+internal sealed class GenerateBlobCommand : Command
 {
 	private readonly Random _random = new(1234567);
 
-	public sealed class Settings : OutputCommandSettings
+	private static readonly Option<OutputTarget> Target = new("--target") { DefaultValueFactory = _ => OutputTarget.StdOut };
+	private static readonly Option<long> Length = new("--length") { DefaultValueFactory = _ => 100_000L };
+	private static readonly Option<int> Buffer = new("--buffer") { DefaultValueFactory = _ => 1024 };
+
+	public GenerateBlobCommand() : base("blob")
 	{
-		[CommandOption("--length")] public long Length { get; init; } = 100_000;
-		[CommandOption("--buffer")] public int BufferSize { get; init; } = 1024;
+		Add(Target);
+		Add(Length);
+		Add(Buffer);
+		SetAction(ExecuteAsync);
 	}
 
-	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	public async Task<int> ExecuteAsync(ParseResult result, CancellationToken cancellationToken)
 	{
 		using var output = Output.Connect();
 
-		using var bytes = MemoryPool<byte>.Shared.Rent(settings.BufferSize);
+		using var bytes = MemoryPool<byte>.Shared.Rent(result.GetRequiredValue(Buffer));
 
 		var total = 0L;
-		while (total < settings.Length)
+		var length = result.GetRequiredValue(Length);
+		while (total < length)
 		{
 			_random.NextBytes(bytes.Memory.Span);
 
-			var count = (int)Math.Min(bytes.Memory.Length, settings.Length - total);
-			foreach (var writer in output.GetWriters(settings.Target))
+			var count = (int)Math.Min(bytes.Memory.Length, length - total);
+			foreach (var writer in output.GetWriters(result.GetRequiredValue(Target)))
 			{
 				await writer.BaseStream.WriteAsync(bytes.Memory[..count], cancellationToken);
 			}

src/process.dummy.app/_commands/GenerateClobCommand.cs

@@ -1,37 +1,42 @@
 // Copyright (c) The Geekeey Authors
 // SPDX-License-Identifier: EUPL-1.2
 
+using System.CommandLine;
 using System.Text;
 
-using Spectre.Console.Cli;
-
-internal sealed class GenerateClobCommand : AsyncOutputCommand<GenerateClobCommand.Settings>
+internal sealed class GenerateClobCommand : Command
 {
 	private readonly Random _random = new(1234567);
 	private readonly char[] _chars = [.. Enumerable.Range(32, 94).Select(i => (char)i)];
 
-	public sealed class Settings : OutputCommandSettings
+	private static readonly Option<OutputTarget> Target = new("--target") { DefaultValueFactory = _ => OutputTarget.StdOut };
+	private static readonly Option<int> Length = new("--length") { DefaultValueFactory = _ => 100_000 };
+	private static readonly Option<int> Lines = new("--lines") { DefaultValueFactory = _ => 1 };
+
+	public GenerateClobCommand() : base("clob")
 	{
-		[CommandOption("--length")] public int Length { get; init; } = 100_000;
-		[CommandOption("--lines")] public int LinesCount { get; init; } = 1;
+		Add(Target);
+		Add(Length);
+		Add(Lines);
+		SetAction(ExecuteAsync);
 	}
 
-	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	public async Task<int> ExecuteAsync(ParseResult result, CancellationToken cancellationToken)
 	{
 		using var output = Output.Connect();
 
-		var buffer = new StringBuilder(settings.Length);
+		var buffer = new StringBuilder(result.GetRequiredValue(Length));
 
-		for (var line = 0; line < settings.LinesCount; line++)
+		for (var line = 0; line < result.GetRequiredValue(Lines); line++)
 		{
 			buffer.Clear();
 
-			for (var i = 0; i < settings.Length; i++)
+			for (var i = 0; i < result.GetRequiredValue(Length); i++)
 			{
 				buffer.Append(_chars[_random.Next(0, _chars.Length)]);
 			}
 
-			foreach (var writer in output.GetWriters(settings.Target))
+			foreach (var writer in output.GetWriters(result.GetRequiredValue(Target)))
 			{
 				await writer.WriteLineAsync(buffer.ToString());
 			}

src/process.dummy.app/_commands/LengthCommand.cs

@@ -2,21 +2,26 @@
 // SPDX-License-Identifier: EUPL-1.2
 
 using System.Buffers;
+using System.CommandLine;
 using System.Globalization;
 
-using Spectre.Console.Cli;
+internal sealed class LengthCommand : Command
+{
+	private static readonly Option<OutputTarget> Target = new("--target") { DefaultValueFactory = _ => OutputTarget.StdOut };
+	private static readonly Option<int> Buffer = new("--buffer") { DefaultValueFactory = _ => 81920 };
 
-internal sealed class LengthCommand : AsyncOutputCommand<LengthCommand.Settings>
-{
-	public sealed class Settings : OutputCommandSettings
+	public LengthCommand() : base("length")
 	{
+		Add(Target);
+		Add(Buffer);
+		SetAction(ExecuteAsync);
 	}
 
-	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	public async Task<int> ExecuteAsync(ParseResult result, CancellationToken cancellationToken)
 	{
 		using var output = Output.Connect();
 
-		using var buffer = MemoryPool<byte>.Shared.Rent(81920);
+		using var buffer = MemoryPool<byte>.Shared.Rent(result.GetRequiredValue(Buffer));
 
 		var count = 0L;
 		while (true)
@@ -30,7 +35,7 @@ internal sealed class LengthCommand : AsyncOutputCommand<LengthCommand.Settings>
 			count += bytesRead;
 		}
 
-		foreach (var writer in output.GetWriters(settings.Target))
+		foreach (var writer in output.GetWriters(result.GetRequiredValue(Target)))
 		{
 			await writer.WriteLineAsync(count.ToString(CultureInfo.InvariantCulture));
 		}

src/process.dummy.app/_commands/SleepCommand.cs

@@ -1,34 +1,37 @@
 // Copyright (c) The Geekeey Authors
 // SPDX-License-Identifier: EUPL-1.2
 
-using Spectre.Console.Cli;
+using System.CommandLine;
 
-internal sealed class SleepCommand : AsyncCommand<SleepCommand.Settings>
+internal sealed class SleepCommand : Command
 {
-	public sealed class Settings : CommandSettings
+	private static readonly Argument<TimeSpan> Duration = new("duration") { DefaultValueFactory = _ => TimeSpan.FromSeconds(1) };
+
+	public SleepCommand() : base("sleep")
 	{
-		[CommandArgument(0, "[duration]")] public TimeSpan Duration { get; init; } = TimeSpan.FromSeconds(1);
+		Add(Duration);
+		SetAction(ExecuteAsync);
 	}
 
-	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	public async Task<int> ExecuteAsync(ParseResult result, CancellationToken cancellationToken)
 	{
 		using var output = Output.Connect();
 
 		try
 		{
-			await Console.Out.WriteLineAsync($"Sleeping for {settings.Duration}...");
-			await Console.Out.FlushAsync(CancellationToken.None);
+			await output.Stdout.WriteLineAsync($"Sleeping for {result.GetRequiredValue(Duration)}...");
+			await output.Stdout.FlushAsync(CancellationToken.None);
 
-			await Task.Delay(settings.Duration, output.CancellationToken);
+			await Task.Delay(result.GetRequiredValue(Duration), cancellationToken);
 		}
 		catch (OperationCanceledException)
 		{
-			await Console.Out.WriteLineAsync("Canceled.");
-			await Console.Out.FlushAsync(CancellationToken.None);
+			await output.Stdout.WriteLineAsync("Canceled.");
+			await output.Stdout.FlushAsync(CancellationToken.None);
 		}
 
-		await Console.Out.WriteLineAsync("Done.");
-		await Console.Out.FlushAsync(CancellationToken.None);
+		await output.Stdout.WriteLineAsync("Done.");
+		await output.Stdout.FlushAsync(CancellationToken.None);
 		return 0;
 	}
 }

src/process.dummy.app/_commands/WorkingDirectoryCommand.cs

@@ -1,19 +1,23 @@
 // Copyright (c) The Geekeey Authors
 // SPDX-License-Identifier: EUPL-1.2
 
-using Spectre.Console.Cli;
+using System.CommandLine;
 
-internal sealed class WorkingDirectoryCommand : AsyncOutputCommand<WorkingDirectoryCommand.Settings>
+internal sealed class WorkingDirectoryCommand : Command
 {
-	public sealed class Settings : OutputCommandSettings
+	private static readonly Option<OutputTarget> Target = new("--target") { DefaultValueFactory = _ => OutputTarget.StdOut };
+
+	public WorkingDirectoryCommand() : base("cwd")
 	{
+		Add(Target);
+		SetAction(ExecuteAsync);
 	}
 
-	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	public async Task<int> ExecuteAsync(ParseResult result, CancellationToken cancellationToken)
 	{
 		using var output = Output.Connect();
 
-		foreach (var writer in output.GetWriters(settings.Target))
+		foreach (var writer in output.GetWriters(result.GetRequiredValue(Target)))
 		{
 			await writer.WriteLineAsync(Directory.GetCurrentDirectory());
 		}