transform-attributes.js

function transformAttributes (stats) {
	attrs = parseInt(attrs, 8);
	var others  = attrs & 7;
	var user = attrs >> 3 & 7;
	var owner = attrs >> 6 & 7;
	return [
		owner & 4 ? 'r' : '-',
		owner & 2 ? 'w' : '-',
		owner & 1 ? 'x' : '-',
		user & 4 ? 'r' : '-',
		user & 2 ? 'w' : '-',
		user & 1 ? 'x' : '-',
		others & 4 ? 'r' : '-',
		others & 2 ? 'w' : '-',
		others & 1 ? 'x' : '-',				 
	].join('');
}


transformAttributes('000'); // ---------
transformAttributes('755'); // rwxr-xr-x