react-shell/examples/commands.php

<?php

use NoccyLabs\React\Shell\CommandHandler;
use React\EventLoop\Loop;

require_once __DIR__."/../vendor/autoload.php";

$shell = new NoccyLabs\React\Shell\Shell();

$commands = new CommandHandler();
// Make it possible to use as few characters as possible as long as they match
// a single command. For example with the commands foo, bar and baz, foo could
// be executed with 'f', 'fo', or 'foo', while both bar and baz would require
// the full name.
$commands->setAllowAbbreviatedCommands(true);
// Add commands
$commands->add('help', function ($args, $shell) {
    $shell->write("This could be usage help :)\n");
    $shell->write("Exit by typing quit or pressing ^C\n");
});
// This is how you terminate the shell. Obviously, you close it :) Using end()
// on the shell differs somewhat between ReactPHP; close() will exit with
// code 0, while end will exit with code 1, and print a friendly message.
$commands->add('quit', function ($args, $shell) {
    $shell->close();
});
// The command handler gets everything that was not matched. Resolve your own
// commands here, or print an error.
$commands->on('command', function ($command, $args, $shell) {
    $shell->write("Bad command '{$command}', try help.\n");
    $shell->write("Arguments passed: ".json_encode($args)."\n");
});


// The prompt event is invoked before every full redraw. Call redrawPrompt()
// to trigger it manually. Set the prompt or the style here.
$shell->on('prompt', function ($shell) {
    $shell->setPrompt(">> ");
});
// This is where we hook the CommandHandler to the shell.
$shell->on('input', $commands);
// And finally, the end event gives you a chance to shut down cleanly. After
// returning from here, the shell will exit.
$shell->on('end', function ($shell) {
    $shell->write("Shutting down...\n");
});