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<?php
namespace {
/**
* 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_Session
* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Abstract.php 23775 2011-03-01 17:25:24Z ralph $
* @since Preview Release 0.2
*/
/**
* Zend_Session_Abstract
*
* @category Zend
* @package Zend_Session
* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
abstract class Zend_Session_Abstract
{
/**
* Whether or not session permits writing (modification of $_SESSION[])
*
* @var bool
*/
protected static $_writable = \false;
/**
* Whether or not session permits reading (reading data in $_SESSION[])
*
* @var bool
*/
protected static $_readable = \false;
/**
* Since expiring data is handled at startup to avoid __destruct difficulties,
* the data that will be expiring at end of this request is held here
*
* @var array
*/
protected static $_expiringData = array();
/**
* Error message thrown when an action requires modification,
* but current Zend_Session has been marked as read-only.
*/
const _THROW_NOT_WRITABLE_MSG = 'Zend_Session is currently marked as read-only.';
/**
* Error message thrown when an action requires reading session data,
* but current Zend_Session is not marked as readable.
*/
const _THROW_NOT_READABLE_MSG = 'Zend_Session is not marked as readable.';
/**
* namespaceIsset() - check to see if a namespace or a variable within a namespace is set
*
* @param string $namespace
* @param string $name
* @return bool
*/
protected static function _namespaceIsset($namespace, $name = null)
{
if (self::$_readable === \false) {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception(self::_THROW_NOT_READABLE_MSG);
}
if ($name === null) {
return isset($_SESSION[$namespace]) || isset(self::$_expiringData[$namespace]);
} else {
return isset($_SESSION[$namespace][$name]) || isset(self::$_expiringData[$namespace][$name]);
}
}
/**
* namespaceUnset() - unset a namespace or a variable within a namespace
*
* @param string $namespace
* @param string $name
* @throws Zend_Session_Exception
* @return void
*/
protected static function _namespaceUnset($namespace, $name = null)
{
if (self::$_writable === \false) {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception(self::_THROW_NOT_WRITABLE_MSG);
}
$name = (string) $name;
// check to see if the api wanted to remove a var from a namespace or a namespace
if ($name === '') {
unset($_SESSION[$namespace]);
unset(self::$_expiringData[$namespace]);
} else {
unset($_SESSION[$namespace][$name]);
unset(self::$_expiringData[$namespace]);
}
// if we remove the last value, remove namespace.
if (empty($_SESSION[$namespace])) {
unset($_SESSION[$namespace]);
}
}
/**
* namespaceGet() - Get $name variable from $namespace, returning by reference.
*
* @param string $namespace
* @param string $name
* @return mixed
*/
protected static function &_namespaceGet($namespace, $name = null)
{
if (self::$_readable === \false) {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception(self::_THROW_NOT_READABLE_MSG);
}
if ($name === null) {
if (isset($_SESSION[$namespace])) {
// check session first for data requested
return $_SESSION[$namespace];
} elseif (isset(self::$_expiringData[$namespace])) {
// check expiring data for data reqeusted
return self::$_expiringData[$namespace];
} else {
return $_SESSION[$namespace];
// satisfy return by reference
}
} else {
if (isset($_SESSION[$namespace][$name])) {
// check session first
return $_SESSION[$namespace][$name];
} elseif (isset(self::$_expiringData[$namespace][$name])) {
// check expiring data
return self::$_expiringData[$namespace][$name];
} else {
return $_SESSION[$namespace][$name];
// satisfy return by reference
}
}
}
/**
* namespaceGetAll() - Get an array containing $namespace, including expiring data.
*
* @param string $namespace
* @param string $name
* @return mixed
*/
protected static function _namespaceGetAll($namespace)
{
$currentData = isset($_SESSION[$namespace]) && \is_array($_SESSION[$namespace]) ? $_SESSION[$namespace] : array();
$expiringData = isset(self::$_expiringData[$namespace]) && \is_array(self::$_expiringData[$namespace]) ? self::$_expiringData[$namespace] : array();
return \array_merge($currentData, $expiringData);
}
}
}