Hunt Console library eases the creation of beautiful and testable command line interfaces.

It is a port from Symfony's Console component. ( reference here https://symfony.com/doc/current/console.html )

The Application object manages the command-line application:

import hunt.console;

console = new Application();
console.run(new ArgsInput(args));

The run() method parses the arguments and options passed on the command line and executes the right command.

Registering a new command can easily be done via the register() method, which returns a Command instance:

void main(string[] args)
{
 Application app = new Application("Hunt Console", "1.0.0");
 app.setAutoExit(false);
 app.add(new GreetingCommand());

 app.add((new Command("test")).setExecutor(new class CommandExecutor {
     override public int execute(Input input, Output output)
     {
         output.writeln("hello world");
         return 0;
     }
 }));

 if(args.length > 1)
     app.run(args[1..$]);
 else
     app.run([]);
}

You can also register new commands via classes.

The component provides a lot of features like output coloring, input and output abstractions (so that you can easily unit-test your commands), validation, automatic help messages ...

Github repo:
https://github.com/huntlabs/hunt-console

HuntLabs website:
https://www.huntlabs.net/