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<?php /** * PHPExcel_CachedObjectStorage_MemorySerialized * * 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_MemorySerialized 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] = 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; $this->currentObject = unserialize($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; } }
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