build: initial project release

src/process.dummy.app/.editorconfig

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+
+[*.{cs,vb}]
+# disable IDE0060: Remove unused parameter
+dotnet_diagnostic.IDE0060.severity = none
+# disable IDE0005: Unnecessary using directive
+dotnet_diagnostic.IDE0005.severity = none

src/process.dummy.app/AsyncOutputCommand.cs

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+// 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

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <RootNamespace>Geekeey.Process</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Spectre.Console" PrivateAssets="compile" />
+    <PackageReference Include="Spectre.Console.Cli" PrivateAssets="compile" />
+  </ItemGroup>
+</Project>

src/process.dummy.app/Output.cs

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+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+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();
+		Stdout.Dispose();
+		Stderr.BaseStream.Flush();
+		Stderr.Dispose();
+		Stdin.Dispose();
+		Console.CancelKeyPress -= Cancel;
+		_cts.Dispose();
+	}
+}

src/process.dummy.app/OutputTarget.cs

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+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+[Flags]
+internal enum OutputTarget
+{
+	StdOut = 1,
+	StdErr = 2,
+	All = StdOut | StdErr
+}
+
+internal static class OutputTargetExtensions
+{
+	public static IEnumerable<StreamWriter> GetWriters(this Output output, OutputTarget target)
+	{
+		if (target.HasFlag(OutputTarget.StdOut))
+		{
+			yield return output.Stdout;
+		}
+
+		if (target.HasFlag(OutputTarget.StdErr))
+		{
+			yield return output.Stderr;
+		}
+	}
+}

src/process.dummy.app/Program.cs

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+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+using System.Reflection;
+using System.Runtime.InteropServices;
+
+using Spectre.Console.Cli;
+
+namespace Geekeey.Process.Testing.Fixture;
+
+public static class Program
+{
+	private static readonly string? FileExtension = RuntimeInformation.IsOSPlatform(OSPlatform.Windows) ? "exe" : null;
+
+#pragma warning disable IL3000 // only for testing where we don't run in single files!
+	private static readonly string AssemblyPath = Assembly.GetExecutingAssembly().Location;
+#pragma warning restore IL3000
+
+	public static string FilePath { get; } = Path.ChangeExtension(AssemblyPath, FileExtension);
+
+	private static 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)
+		{
+			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 =>
+			{
+				generate.AddCommand<GenerateBlobCommand>("blob");
+				generate.AddCommand<GenerateClobCommand>("clob");
+			});
+		}
+	}
+}

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

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+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+using Spectre.Console.Cli;
+
+internal sealed class EchoCommand : AsyncOutputCommand<EchoCommand.Settings>
+{
+	public sealed class Settings : OutputCommandSettings
+	{
+		[CommandOption("--separator <char>")] public string Separator { get; init; } = " ";
+		[CommandArgument(0, "[line]")] public string[] Items { get; init; } = [];
+	}
+
+	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	{
+		using var output = Output.Connect();
+
+		foreach (var writer in output.GetWriters(settings.Target))
+		{
+			await writer.WriteLineAsync(string.Join(settings.Separator, settings.Items));
+		}
+
+		return 0;
+	}
+}

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

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+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+using System.Buffers;
+
+using Spectre.Console.Cli;
+
+internal sealed class EchoStdinCommand : AsyncOutputCommand<EchoStdinCommand.Settings>
+{
+	public sealed class Settings : OutputCommandSettings
+	{
+		[CommandOption("--length")] public long Length { get; init; } = long.MaxValue;
+	}
+
+	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	{
+		using var output = Output.Connect();
+		using var buffer = MemoryPool<byte>.Shared.Rent(81920);
+
+		var count = 0L;
+		while (count < settings.Length)
+		{
+			var bytesWanted = (int)Math.Min(buffer.Memory.Length, settings.Length - count);
+
+			var bytesRead = await output.Stdin.BaseStream.ReadAsync(buffer.Memory[..bytesWanted], cancellationToken);
+			if (bytesRead <= 0)
+			{
+				break;
+			}
+
+			foreach (var writer in output.GetWriters(settings.Target))
+			{
+				await writer.BaseStream.WriteAsync(buffer.Memory[..bytesRead], cancellationToken);
+			}
+
+			count += bytesRead;
+		}
+
+		return 0;
+	}
+}

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

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+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+using Spectre.Console.Cli;
+
+internal sealed class EnvironmentCommand : AsyncOutputCommand<EnvironmentCommand.Settings>
+{
+	public sealed class Settings : OutputCommandSettings
+	{
+		[CommandArgument(0, "<ARGUMENT>")] public string[] Variables { get; init; } = [];
+	}
+
+	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	{
+		using var output = Output.Connect();
+
+		foreach (var name in settings.Variables)
+		{
+			var value = Environment.GetEnvironmentVariable(name) ?? string.Empty;
+
+			foreach (var writer in output.GetWriters(settings.Target))
+			{
+				await writer.WriteLineAsync(value);
+			}
+		}
+
+		return 0;
+	}
+}

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

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+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+using Spectre.Console.Cli;
+
+internal sealed class ExitCommand : AsyncCommand<ExitCommand.Settings>
+{
+	public sealed class Settings : CommandSettings
+	{
+		[CommandArgument(1, "<code>")] public int Code { get; init; }
+	}
+
+	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	{
+		using var output = Output.Connect();
+
+		await output.Stderr.WriteLineAsync($"Exit code set to {settings.Code}");
+
+		return settings.Code;
+	}
+}

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

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+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+using System.Buffers;
+
+using Spectre.Console.Cli;
+
+internal sealed class GenerateBlobCommand : AsyncOutputCommand<GenerateBlobCommand.Settings>
+{
+	private readonly Random _random = new(1234567);
+
+	public sealed class Settings : OutputCommandSettings
+	{
+		[CommandOption("--length")] public long Length { get; init; } = 100_000;
+		[CommandOption("--buffer")] public int BufferSize { get; init; } = 1024;
+	}
+
+	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	{
+		using var output = Output.Connect();
+
+		using var bytes = MemoryPool<byte>.Shared.Rent(settings.BufferSize);
+
+		var total = 0L;
+		while (total < settings.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))
+			{
+				await writer.BaseStream.WriteAsync(bytes.Memory[..count], cancellationToken);
+			}
+
+			total += count;
+		}
+
+		return 0;
+	}
+}

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

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

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

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+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+using System.Buffers;
+using System.Globalization;
+
+using Spectre.Console.Cli;
+
+internal sealed class LengthCommand : AsyncOutputCommand<LengthCommand.Settings>
+{
+	public sealed class Settings : OutputCommandSettings
+	{
+	}
+
+	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	{
+		using var output = Output.Connect();
+
+		using var buffer = MemoryPool<byte>.Shared.Rent(81920);
+
+		var count = 0L;
+		while (true)
+		{
+			var bytesRead = await output.Stdin.BaseStream.ReadAsync(buffer.Memory, cancellationToken);
+			if (bytesRead <= 0)
+			{
+				break;
+			}
+
+			count += bytesRead;
+		}
+
+		foreach (var writer in output.GetWriters(settings.Target))
+		{
+			await writer.WriteLineAsync(count.ToString(CultureInfo.InvariantCulture));
+		}
+
+		return 0;
+	}
+}

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

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+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+using Spectre.Console.Cli;
+
+internal sealed class SleepCommand : AsyncCommand<SleepCommand.Settings>
+{
+	public sealed class Settings : CommandSettings
+	{
+		[CommandArgument(0, "[duration]")] public TimeSpan Duration { get; init; } = TimeSpan.FromSeconds(1);
+	}
+
+	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	{
+		using var output = Output.Connect();
+
+		try
+		{
+			await Console.Out.WriteLineAsync($"Sleeping for {settings.Duration}...");
+			await Console.Out.FlushAsync(CancellationToken.None);
+
+			await Task.Delay(settings.Duration, output.CancellationToken);
+		}
+		catch (OperationCanceledException)
+		{
+			await Console.Out.WriteLineAsync("Canceled.");
+			await Console.Out.FlushAsync(CancellationToken.None);
+		}
+
+		await Console.Out.WriteLineAsync("Done.");
+		await Console.Out.FlushAsync(CancellationToken.None);
+		return 0;
+	}
+}

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

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+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+using Spectre.Console.Cli;
+
+internal sealed class WorkingDirectoryCommand : AsyncOutputCommand<WorkingDirectoryCommand.Settings>
+{
+	public sealed class Settings : OutputCommandSettings
+	{
+	}
+
+	public override async Task<int> ExecuteAsync(CommandContext context, Settings settings, CancellationToken cancellationToken)
+	{
+		using var output = Output.Connect();
+
+		foreach (var writer in output.GetWriters(settings.Target))
+		{
+			await writer.WriteLineAsync(Directory.GetCurrentDirectory());
+		}
+
+		return 0;
+	}
+}