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Filename : Transfer.php
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<?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) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd     New BSD License
 * @version   $Id$
 */

/**
 * @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) 2005-2015 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!");
    }
}