1 <?php

     2 /**

     3  * Zend Framework

     4  *

     5  * LICENSE

     6  *

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

     8  * with this package in the file LICENSE.txt.

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

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

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

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

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

    14  *

    15  * @category   Zend

    16  * @package    Zend_Http

    17  * @subpackage UserAgent

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

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

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

    21  */

    22 

    23 

    24 /**

    25  * @see Zend_Http_UserAgent_Storage_Interface

    26  */

    27 require_once 'Zend/Http/UserAgent/Storage.php';

    28 

    29 

    30 /**

    31  * Non-Persistent Browser Storage

    32  *

    33  * Since HTTP Browserentication happens again on each request, this will always be

    34  * re-populated. So there's no need to use sessions, this simple value class

    35  * will hold the data for rest of the current request.

    36  *

    37  * @package    Zend_Http

    38  * @subpackage UserAgent

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

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

    41  */

    42 class Zend_Http_UserAgent_Storage_NonPersistent 

    43     implements Zend_Http_UserAgent_Storage

    44 {

    45     /**

    46      * Holds the actual Browser data

    47      * @var mixed

    48      */

    49     protected $_data;

    50 

    51     /**

    52      * Returns true if and only if storage is empty

    53      *

    54      * @throws Zend_Http_UserAgent_Storage_Exception If it is impossible to determine whether storage is empty

    55      * @return boolean

    56      */

    57     public function isEmpty()

    58     {

    59         return empty($this->_data);

    60     }

    61 

    62     /**

    63      * Returns the contents of storage

    64      *

    65      * Behavior is undefined when storage is empty.

    66      *

    67      * @throws Zend_Http_UserAgent_Storage_Exception If reading contents from storage is impossible

    68      * @return mixed

    69      */

    70     public function read()

    71     {

    72         return $this->_data;

    73     }

    74 

    75     /**

    76      * Writes $contents to storage

    77      *

    78      * @param  mixed $contents

    79      * @throws Zend_Http_UserAgent_Storage_Exception If writing $contents to storage is impossible

    80      * @return void

    81      */

    82     public function write($contents)

    83     {

    84         $this->_data = $contents;

    85     }

    86 

    87     /**

    88      * Clears contents from storage

    89      *

    90      * @throws Zend_Http_UserAgent_Storage_Exception If clearing contents from storage is impossible

    91      * @return void

    92      */

    93     public function clear()

    94     {

    95         $this->_data = null;

    96     }

    97 }