<?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_File_Transfer

 * @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: Transfer.php 21201 2010-02-24 22:13:20Z thomas $

 */

/**

 * @see Zend_Loader

 */

require_once 'Zend/Loader.php';

/**

 * Base class for all protocols supporting file transfers

 *

 * @category  Zend

 * @package   Zend_File_Transfer

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

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

 */

class Zend_File_Transfer

{

    /**

     * Array holding all directions

     *

     * @var array

     */

    protected $_adapter = array();

    /**

     * Creates a file processing handler

     *

     * @param  string  $adapter   Adapter to use

     * @param  boolean $direction OPTIONAL False means Download, true means upload

     * @param  array   $options   OPTIONAL Options to set for this adapter

     * @throws Zend_File_Transfer_Exception

     */

    public function __construct($adapter = 'Http', $direction = false, $options = array())

    {

        $this->setAdapter($adapter, $direction, $options);

    }

    /**

     * Sets a new adapter

     *

     * @param  string  $adapter   Adapter to use

     * @param  boolean $direction OPTIONAL False means Download, true means upload

     * @param  array   $options   OPTIONAL Options to set for this adapter

     * @throws Zend_File_Transfer_Exception

     */

    public function setAdapter($adapter, $direction = false, $options = array())

    {

        if (Zend_Loader::isReadable('Zend/File/Transfer/Adapter/' . ucfirst($adapter). '.php')) {

            $adapter = 'Zend_File_Transfer_Adapter_' . ucfirst($adapter);

        }

        if (!class_exists($adapter)) {

            Zend_Loader::loadClass($adapter);

        }

        $direction = (integer) $direction;

        $this->_adapter[$direction] = new $adapter($options);

        if (!$this->_adapter[$direction] instanceof Zend_File_Transfer_Adapter_Abstract) {

            require_once 'Zend/File/Transfer/Exception.php';

            throw new Zend_File_Transfer_Exception("Adapter " . $adapter . " does not extend Zend_File_Transfer_Adapter_Abstract");

        }

        return $this;

    }

    /**

     * Returns all set adapters

     *

     * @param boolean $direction On null, all directions are returned

     *                           On false, download direction is returned

     *                           On true, upload direction is returned

     * @return array|Zend_File_Transfer_Adapter

     */

    public function getAdapter($direction = null)

    {

        if ($direction === null) {

            return $this->_adapter;

        }

        $direction = (integer) $direction;

        return $this->_adapter[$direction];

    }

    /**

     * Calls all methods from the adapter

     *

     * @param  string $method  Method to call

     * @param  array  $options Options for this method

     * @return mixed

     */

    public function __call($method, array $options)

    {

        if (array_key_exists('direction', $options)) {

            $direction = (integer) $options['direction'];

        } else {

            $direction = 0;

        }

        if (method_exists($this->_adapter[$direction], $method)) {

            return call_user_func_array(array($this->_adapter[$direction], $method), $options);

        }

        require_once 'Zend/File/Transfer/Exception.php';

        throw new Zend_File_Transfer_Exception("Unknown method '" . $method . "' called!");

    }

}