Builder.php

<?php
namespace Core\Acl;

use Zend\ServiceManager\ServiceManager;
use Zend\ServiceManager\ServiceManagerAwareInterface;
use Zend\ServiceManager\Exception\ServiceNotFoundException;

use Zend\Permissions\Acl\Acl;
use Zend\Permissions\Acl\Role\GenericRole as Role;
use Zend\Permissions\Acl\Resource\GenericResource as Resource;

class Builder implements ServiceManagerAwareInterface
{
    /**
     * @var ServiceManager
     */
    protected $serviceManager;

    /**
     * @param ServiceManager $serviceManager
     */
    public function setServiceManager(ServiceManager $serviceManager)
    {
        $this->serviceManager = $serviceManager;
        //return $this;
    }

    /**
     * Retrieve serviceManager instance
     *
     * @return ServiceLocatorInterface
     */
    public function getServiceManager()
    {
        return $this->serviceManager;
    }

    /**
     * Constroi a ACL
     * @return Acl 
     */
    public function build()
    {
        $config = $this->getServiceManager()->get('Config');
        $acl = new Acl();
        foreach ($config['acl']['roles'] as $role => $parent) {
            $acl->addRole(new Role($role), $parent);
        }
        foreach ($config['acl']['resources'] as $r) {
            $acl->addResource(new Resource($r));
        }
        foreach ($config['acl']['privilege'] as $role => $privilege) {
            if (isset($privilege['allow'])) {
                foreach ($privilege['allow'] as $p) {
                    $acl->allow($role, $p);
                }
            }
            if (isset($privilege['deny'])) {
                foreach ($privilege['deny'] as $p) {
                    $acl->deny($role, $p);
                }
            }
        }
        return $acl;
    }
}