commandlineparser / commandline

The best C# command line parser that brings standardized *nix getopt style, for .NET. Includes F# support
MIT License
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Increase the number of verbs supported #914

Open unwobbling opened 4 months ago

unwobbling commented 4 months ago

Would it be a possible to remove the limit on the number of verbs supported?

Currently the limit is 16.

Ideal would be no limit if that's not possible due to the implementation 32 would be great.

In:

ParserExtensions .ParseArguments<>

ParserResultExtensions .MapResult()

quotschmacher commented 4 months ago

I just searched for this topic at Stackoverflow and unlimited / dynamic number is not possible.

But I would like to have more than 16 parameters, too. 32 would be really nice.

Roiskia commented 4 months ago

This is already possible. I stumpled upon this while trying to use dependency injection with commandlineparser. I dont think that there is a real limit on the number of verbs by doing it this way:

using CommandLine;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

var services = new ServiceCollection()
.AddTransient<IController<FooOptions>, FooController>()
// ...
.AddTransient<IController<FooOptions17>, FooController17>()
.BuildServiceProvider();

Type[] optionTypes = [
    typeof(FooOptions),
// ...
    typeof(FooOptions17),
];

Parser.Default.ParseArguments(args, optionTypes)
.MapResult((IOptions o) => {
    Type t = typeof(IController<>).MakeGenericType(o.GetType());
    var controller = services.GetRequiredService(t);
    return t.GetMethod(nameof(IController<IOptions>.Run))?.Invoke(controller, [o]);
},
errs => 1);