File indexing completed on 2024-12-22 05:36:53

 <?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_Paginator
  * @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    $Id$
  */
 
 /**
  * @category   Zend
  * @package    Zend_Paginator
  * @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_Paginator_SerializableLimitIterator extends LimitIterator implements Serializable, ArrayAccess
 {
 
     /**
      * Offset to first element
      *
      * @var int
      */
     private $_offset;
 
     /**
      * Maximum number of elements to show or -1 for all
      *
      * @var int
      */
     private $_count;
 
     /**
      * Construct a Zend_Paginator_SerializableLimitIterator
      *
      * @param Iterator $it Iterator to limit (must be serializable by un-/serialize)
      * @param int $offset Offset to first element
      * @param int $count Maximum number of elements to show or -1 for all
      * @see LimitIterator::__construct
      */
     public function __construct (Iterator $it, $offset=0, $count=-1)
     {
         parent::__construct($it, $offset, $count);
         $this->_offset = $offset;
         $this->_count = $count;
     }
 
     /**
      * @return string representation of the instance
      */
     public function serialize()
     {
         return serialize(array(
             'it'     => $this->getInnerIterator(),
             'offset' => $this->_offset,
             'count'  => $this->_count,
             'pos'    => $this->getPosition(),
         ));
     }
 
     /**
      * @param string $data representation of the instance
      */
     public function unserialize($data)
     {
         $dataArr = unserialize($data);
         $this->__construct($dataArr['it'], $dataArr['offset'], $dataArr['count']);
         $this->seek($dataArr['pos']+$dataArr['offset']);
     }
 
     /**
      * Returns value of the Iterator
      *
      * @param int $offset
      * @return mixed
      */
     public function offsetGet($offset)
     {
         $currentOffset = $this->key();
         $this->seek($offset);
         $current = $this->current();
         $this->seek($currentOffset);
         return $current;
     }
 
     /**
      * Does nothing
      * Required by the ArrayAccess implementation
      *
      * @param int $offset
      * @param mixed $value
      */
     public function offsetSet($offset, $value)
     {
     }
 
     /**
      * Determine if a value of Iterator is set and is not NULL
      *
      * @param int $offset
      */
     public function offsetExists($offset)
     {
         if ($offset > 0 && $offset < $this->_count) {
             try {
                 $currentOffset = $this->key();
                 $this->seek($offset);
                 $current = $this->current();
                 $this->seek($currentOffset);
                 return null !== $current;
             } catch (OutOfBoundsException $e) {
                 // reset position in case of exception is assigned null
                 $this->rewind();
                 $this->seek($currentOffset);
                 return false;
             }
         }
         return false;
     }
 
     /**
      * Does nothing
      * Required by the ArrayAccess implementation
      *
      * @param int $offset
      */
     public function offsetUnset($offset)
     {
     }
 }