[PHP] Core: CLI

CLI.php

<?php

class CLI {
	const
		BLACK           = "\033[0;30m",
		DARKGRAY        = "\033[1;30m",
		RED             = "\033[0;31m",
		LIGHTRED        = "\033[1;31m",
		GREEN           = "\033[0;32m",
		LIGHTGREEN      = "\033[1;32m",
		BROWN           = "\033[0;33m",
		YELLOW          = "\033[1;33m",
		BLUE            = "\033[0;34m",
		LIGHTBLUE       = "\033[1;34m",
		PURPLE          = "\033[0;35m",
		LIGHTPURPLE     = "\033[1;35m",
		CYAN            = "\033[0;36m",
		LIGHTCYAN       = "\033[1;36m",
		GRAY            = "\033[0;37m",
		WHITE           = "\033[1;37m",
		BOLD            = "\033[1m";

	protected static $args,
					 $commands;
	
	public static function args(){
		if (!static::$args){
			static::$args = (object)['opts'=>(object)[],'args'=>[],'extra'=>''];
			$args = array_slice($GLOBALS['argv'], 1);
			while (list($argi, $arg_x) = each($args)){
				if ($arg_x == '--'){
					// Skip parsing args
					static::$args->extra = implode(" ", array_slice($args, $argi+1));
					break;
				} else if ($arg_x{0} == '-') {
					// Single or Multiple options
					$arg_name = substr($arg_x, 1);
					if ($arg_x{1} == '-') {
						// Named option
						$arg_name = substr($arg_name, 1);
						if (strpos($arg_name, '=') !== false){
							if (substr($arg_name, -1,1)=='='){
								// Direct assignment, quoted value : --option="foo bar"
								$arg_name = rtrim($arg_name,'=');
								$value = current($args);
								next($args);
							} else {
								// Direct assignment : --option=123
								list($arg_name, $value) = explode('=', substr($arg_x,2), 2);
								static::$args->opts->$arg_name = $value;
							}
						} else {
							if (substr($arg_name,0,3)=='no-'){
								// Inverted option (FALSE): --no-option
								$value = false;
								$arg_name = substr($arg_name, 3);
							} else {
								// Simple option (TRUE): --option
								$value = true;
							}
						}
						static::$args->opts->$arg_name = $value;
					} else {
						// Multiple single options : -abCD
						foreach(str_split($arg_name, 1) as $flag){
							static::$args->opts->$flag = true;
						}
					}
				} else {
					// Simple argument
					static::$args->args[] = $arg_x;
				}
			}
		}
		return static::$args;
	}
	
	public static function define($command_name){
		return static::$commands[$command_name] = new CLI_Command($command_name);
	}
}

class CLI_Command {
	public $name,
		   $options,
		   $args,
		   $title,
		   $description,
		   $help,
		   $callback;
			
	public function __construct($name){
		$this->name = $name;
	}
	
	public function option($name, $description=''){
		$this->options[$name] = [
			'name'        => ($optional=substr($name,-1,1)=='?')?substr($name,0,-1):$name,
			'description' => $description,
			'required'    => !$optional,		
		];
		return $this;
	}
	
	public function argument($name, $description=''){
		$this->args[$name] = [
			'name'        => ($optional=substr($name,-1,1)=='?')?substr($name,0,-1):$name,
			'description' => $description,
			'required'    => !$optional,		
		];
		return $this;
	}

	public function title($value){
		$this->title = $value;
		return $this;
	}

	public function description($value){
		$this->description = $value;
		return $this;
	}

	public function help($value){
		$this->help = $value;
		return $this;
	}

	public function run($callback){
		$this->callback = $callback;
		return $this;
	}

	public function switch($arg, $map){
		$caller = $map[CLI::args()->$arg];
		return $this;
	}

}

/*
$x = CLI::define("user")
       ->title("User commands")
	   ->description("Tools for users administration.")
		   ->argument("name", "The user name")
		   ->argument("nickname?", "An optional nickname")
		   ->option("promote","Promote user to next level")
		   ->option("force","Create user if it exists")
		->run(function($cli){
			$cli->write("Hello");
		});
*/

$x = CLI::define("user")
		       ->title("User commands")
			   ->description("Tools for users administration.")
			   ->option("promote","Promote user to next level")
			   ->option("force","Create user if it exists")
			   ->switch('action',[
					'show' => function($args){
						echo "Show " . $args['arg'][0];
					},
					'list' => function($args){
						echo "List";
					},
					'remove' => function($args){
						echo "Remove " . $args['arg'][0];
					},
				]);
var_dump($x);

/*
echo CLI::CYAN;
var_dump(
	CLI::args()
);
*/