<?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!");
}
}