134 lines
4.2 KiB
PHP
134 lines
4.2 KiB
PHP
<?php
|
|
|
|
/**
|
|
* PHPExcel_CachedObjectStorage_MemoryGZip
|
|
*
|
|
* Copyright (c) 2006 - 2015 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 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
|
|
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
|
|
* @version ##VERSION##, ##DATE##
|
|
*/
|
|
class PHPExcel_CachedObjectStorage_MemoryGZip 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 ($this->currentCellIsDirty && !empty($this->currentObjectID)) {
|
|
$this->currentObject->detach();
|
|
|
|
$this->cellCache[$this->currentObjectID] = gzdeflate(serialize($this->currentObject));
|
|
$this->currentCellIsDirty = false;
|
|
}
|
|
$this->currentObjectID = $this->currentObject = null;
|
|
}
|
|
|
|
|
|
/**
|
|
* Add or Update a cell in cache identified by coordinate address
|
|
*
|
|
* @param string $pCoord Coordinate address of the cell to update
|
|
* @param PHPExcel_Cell $cell Cell to update
|
|
* @return PHPExcel_Cell
|
|
* @throws PHPExcel_Exception
|
|
*/
|
|
public function addCacheData($pCoord, PHPExcel_Cell $cell)
|
|
{
|
|
if (($pCoord !== $this->currentObjectID) && ($this->currentObjectID !== null)) {
|
|
$this->storeData();
|
|
}
|
|
|
|
$this->currentObjectID = $pCoord;
|
|
$this->currentObject = $cell;
|
|
$this->currentCellIsDirty = true;
|
|
|
|
return $cell;
|
|
}
|
|
|
|
|
|
/**
|
|
* 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;
|
|
$this->currentObject = unserialize(gzinflate($this->cellCache[$pCoord]));
|
|
// Re-attach this as the cell's parent
|
|
$this->currentObject->attach($this);
|
|
|
|
// Return requested entry
|
|
return $this->currentObject;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get a list of all cell addresses currently held in cache
|
|
*
|
|
* @return string[]
|
|
*/
|
|
public function getCellList()
|
|
{
|
|
if ($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;
|
|
}
|
|
}
|