using System;

using System.IO;

using CommandLine;

using System.Collections.Generic;

using CommandLine.Text;

​

public class Program

{

    public class Options

    {

        [Value(0)]

        public IEnumerable<FileInfo> Inputs { get; set; }

        [Option("sign-with", Required = false, Separator=',')]

        public IEnumerable<FileInfo> SignWith { get; set; } = new List<FileInfo>();

        [Option("encrypt", Required = false, Separator=',')]

        public IEnumerable<FileInfo> Encrypt { get; set; } = new List<FileInfo>();

    }

    static void Main()

    {

        string[] arguments = new string[]{"--sign-with", "/aaa/bbb/a", "--sign-with", "b", "--encrypt", "c.asc", "--encrypt", "d.pgp", "--", "e.asc"};

        int i;

        for(i=arguments.Length-1; i>=0; --i)

        {

            if (arguments[i].Equals("--"))

                break;

            if (arguments[i].StartsWith("--"))

                break;

        }

        i += 2;

        //Console.WriteLine(arguments[i]);

        foreach (var arg in arguments)

        {

            Console.WriteLine(arg);

        }

​

        Console.WriteLine();

        using Parser parser = new(settings =>

        {

            settings.GetoptMode = true;

            settings.AllowMultiInstance = true;

            settings.EnableDashDash = true;

            settings.CaseInsensitiveEnumValues = true;

            settings.PosixlyCorrect = true;

            //settings.IgnoreUnknownArguments=true;

        });

​

        parser.ParseArguments<Options>(arguments)

       .WithParsed<Options>(o =>

       {

           Console.WriteLine("SignWith");

           foreach(var s in o.SignWith)

               Console.WriteLine(s.FullName);

​

            Console.WriteLine("Encrypt");

           foreach (var s in o.Encrypt)

               Console.WriteLine(s.FullName);

           Console.WriteLine("Inputs");

           foreach (var s in o.Inputs)

               Console.WriteLine(s.FullName);

       }).WithNotParsed(errors =>

            {

                           foreach (var s in errors)

               Console.WriteLine(s);

            });;

    }

}