New file |
0,0 → 1,152 |
<?php |
/** |
* PHPExcel |
* |
* Copyright (c) 2006 - 2013 PHPExcel |
* |
* This library is free software; you can redistribute it and/or |
* modify it under the terms of the GNU Lesser General Public |
* License as published by the Free Software Foundation; either |
* version 2.1 of the License, or (at your option) any later version. |
* |
* This library is distributed in the hope that it will be useful, |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
* Lesser General Public License for more details. |
* |
* You should have received a copy of the GNU Lesser General Public |
* License along with this library; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
* |
* @category PHPExcel |
* @package PHPExcel_CachedObjectStorage |
* @copyright Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel) |
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL |
* @version ##VERSION##, ##DATE## |
*/ |
|
|
/** |
* PHPExcel_CachedObjectStorage_Igbinary |
* |
* @category PHPExcel |
* @package PHPExcel_CachedObjectStorage |
* @copyright Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel) |
*/ |
class PHPExcel_CachedObjectStorage_Igbinary extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache { |
|
/** |
* Store cell data in cache for the current cell object if it's "dirty", |
* and the 'nullify' the current cell object |
* |
* @return void |
* @throws PHPExcel_Exception |
*/ |
protected function _storeData() { |
if ($this->_currentCellIsDirty) { |
$this->_currentObject->detach(); |
|
$this->_cellCache[$this->_currentObjectID] = igbinary_serialize($this->_currentObject); |
$this->_currentCellIsDirty = false; |
} |
$this->_currentObjectID = $this->_currentObject = null; |
} // function _storeData() |
|
|
/** |
* Add or Update a cell in cache identified by coordinate address |
* |
* @param string $pCoord Coordinate address of the cell to update |
* @param PHPExcel_Cell $cell Cell to update |
* @return void |
* @throws PHPExcel_Exception |
*/ |
public function addCacheData($pCoord, PHPExcel_Cell $cell) { |
if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) { |
$this->_storeData(); |
} |
|
$this->_currentObjectID = $pCoord; |
$this->_currentObject = $cell; |
$this->_currentCellIsDirty = true; |
|
return $cell; |
} // function addCacheData() |
|
|
/** |
* Get cell at a specific coordinate |
* |
* @param string $pCoord Coordinate of the cell |
* @throws PHPExcel_Exception |
* @return PHPExcel_Cell Cell that was found, or null if not found |
*/ |
public function getCacheData($pCoord) { |
if ($pCoord === $this->_currentObjectID) { |
return $this->_currentObject; |
} |
$this->_storeData(); |
|
// Check if the entry that has been requested actually exists |
if (!isset($this->_cellCache[$pCoord])) { |
// Return null if requested entry doesn't exist in cache |
return null; |
} |
|
// Set current entry to the requested entry |
$this->_currentObjectID = $pCoord; |
$this->_currentObject = igbinary_unserialize($this->_cellCache[$pCoord]); |
// Re-attach this as the cell's parent |
$this->_currentObject->attach($this); |
|
// Return requested entry |
return $this->_currentObject; |
} // function getCacheData() |
|
|
/** |
* Get a list of all cell addresses currently held in cache |
* |
* @return array of string |
*/ |
public function getCellList() { |
if ($this->_currentObjectID !== null) { |
$this->_storeData(); |
} |
|
return parent::getCellList(); |
} |
|
|
/** |
* Clear the cell collection and disconnect from our parent |
* |
* @return void |
*/ |
public function unsetWorksheetCells() { |
if(!is_null($this->_currentObject)) { |
$this->_currentObject->detach(); |
$this->_currentObject = $this->_currentObjectID = null; |
} |
$this->_cellCache = array(); |
|
// detach ourself from the worksheet, so that it can then delete this object successfully |
$this->_parent = null; |
} // function unsetWorksheetCells() |
|
|
/** |
* Identify whether the caching method is currently available |
* Some methods are dependent on the availability of certain extensions being enabled in the PHP build |
* |
* @return boolean |
*/ |
public static function cacheMethodIsAvailable() { |
if (!function_exists('igbinary_serialize')) { |
return false; |
} |
|
return true; |
} |
|
} |