pmake/src/js/cmdline.js

const PADDING = 16;
var   action;

for(var i = 1; i < ARGV.length; i++) {
	if(ARGV[i] == "--help") {
		var keys;

		console.log("PMake " + pmake.VERSION + " - Pyrite's build script generator");
		console.log("");
		console.log("Usage: " + ARGV[0] + " [options] action [arguments]");
		console.log("");
		console.log("ACTIONS");

		keys = Object.keys(pmake.actions);
		for(var i = 0; i < keys.length; i++) {
			console.log("  " + keys[i] + " ".repeat(PADDING - keys[i].length) + pmake.actions[keys[i]].description);
		}
		process.exit(0);
	} else if(ARGV[i].startsWith("--")) {
		console.log("Error: invalid option '" + ARGV[i].substr(2) + "'");
		process.exit(1);
	} else if(pmake.actions[ARGV[i]]) {
		action = ARGV[i];
		break;
	} else {
		console.log("Error: no such action '" + ARGV[i] + "'");
		process.exit(1);
	}
}

if(!action) {
	console.log("Type '" + ARGV[0] + " --help' for help");
	process.exit(1);
}