<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Tool

 * @subpackage Framework

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Abstract.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/**

 * @see Zend_Tool_Framework_Registry_EnabledInterface

 */

require_once 'Zend/Tool/Framework/Registry/EnabledInterface.php';

require_once 'Zend/Tool/Framework/Loader/Interface.php';

require_once 'Zend/Tool/Framework/Manifest/Interface.php';

require_once 'Zend/Tool/Framework/Provider/Interface.php';

/**

 * @category   Zend

 * @package    Zend_Tool

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

abstract class Zend_Tool_Framework_Loader_Abstract 

    implements Zend_Tool_Framework_Loader_Interface, Zend_Tool_Framework_Registry_EnabledInterface

{

    /**

     * @var Zend_Tool_Framework_Repository_Interface

     */

    protected $_registry = null;

    /**

     * @var array

     */

    private $_retrievedFiles = array();

    /**

     * @var array

     */

    private $_loadedClasses  = array();

    /**

     * _getFiles

     *

     * @return array Array Of Files

     */

    abstract protected function _getFiles();

    /**

     * setRegistry() - required by the enabled interface to get an instance of

     * the registry

     *

     * @param Zend_Tool_Framework_Registry_Interface $registry

     * @return Zend_Tool_Framework_Loader_Abstract

     */

    public function setRegistry(Zend_Tool_Framework_Registry_Interface $registry)

    {

        $this->_registry = $registry;

        return $this;

    }

    /**

     * load() - called by the client initialize routine to load files

     *

     */

    public function load()

    {

        $this->_retrievedFiles = $this->getRetrievedFiles();

        $this->_loadedClasses  = array();

        $manifestRepository = $this->_registry->getManifestRepository();

        $providerRepository = $this->_registry->getProviderRepository();

        $loadedClasses = array();

        // loop through files and find the classes declared by loading the file

        foreach ($this->_retrievedFiles as $file) {

            if(is_dir($file)) {

                continue;

            }

            $classesLoadedBefore = get_declared_classes();

            $oldLevel = error_reporting(E_ALL | ~E_STRICT); // remove strict so that other packages wont throw warnings

            // should we lint the files here? i think so

            include_once $file;

            error_reporting($oldLevel); // restore old error level

            $classesLoadedAfter = get_declared_classes();

            $loadedClasses = array_merge($loadedClasses, array_diff($classesLoadedAfter, $classesLoadedBefore));

        }

        // loop through the loaded classes and ensure that

        foreach ($loadedClasses as $loadedClass) {

            // reflect class to see if its something we want to load

            $reflectionClass = new ReflectionClass($loadedClass);

            if ($reflectionClass->implementsInterface('Zend_Tool_Framework_Manifest_Interface')

                && !$reflectionClass->isAbstract())

            {

                $manifestRepository->addManifest($reflectionClass->newInstance());

                $this->_loadedClasses[] = $loadedClass;

            }

            if ($reflectionClass->implementsInterface('Zend_Tool_Framework_Provider_Interface')

                && !$reflectionClass->isAbstract()

                && !$providerRepository->hasProvider($reflectionClass->getName(), false))

            {

                $providerRepository->addProvider($reflectionClass->newInstance());

                $this->_loadedClasses[] = $loadedClass;

            }

        }

        return $this->_loadedClasses;

    }

    /**

     * getRetrievedFiles()

     *

     * @return array Array of Files Retrieved

     */

    public function getRetrievedFiles()

    {

        if ($this->_retrievedFiles == null) {

            $this->_retrievedFiles = $this->_getFiles();

        }

        return $this->_retrievedFiles;

    }

    /**

     * getLoadedClasses()

     *

     * @return array Array of Loaded Classes

     */

    public function getLoadedClasses()

    {

        return $this->_loadedClasses;

    }

}