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149 lines
4.7 KiB
149 lines
4.7 KiB
<?php |
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/** |
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* PHPExcel_CachedObjectStorage_Igbinary |
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* |
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* Copyright (c) 2006 - 2015 PHPExcel |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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* |
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* @category PHPExcel |
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* @package PHPExcel_CachedObjectStorage |
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* @copyright Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel) |
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* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL |
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* @version ##VERSION##, ##DATE## |
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*/ |
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class PHPExcel_CachedObjectStorage_Igbinary extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache |
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{ |
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/** |
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* Store cell data in cache for the current cell object if it's "dirty", |
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* and the 'nullify' the current cell object |
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* |
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* @return void |
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* @throws PHPExcel_Exception |
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*/ |
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protected function storeData() |
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{ |
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if ($this->currentCellIsDirty && !empty($this->currentObjectID)) { |
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$this->currentObject->detach(); |
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$this->cellCache[$this->currentObjectID] = igbinary_serialize($this->currentObject); |
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$this->currentCellIsDirty = false; |
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} |
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$this->currentObjectID = $this->currentObject = null; |
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} // function _storeData() |
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/** |
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* Add or Update a cell in cache identified by coordinate address |
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* |
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* @param string $pCoord Coordinate address of the cell to update |
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* @param PHPExcel_Cell $cell Cell to update |
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* @return PHPExcel_Cell |
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* @throws PHPExcel_Exception |
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*/ |
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public function addCacheData($pCoord, PHPExcel_Cell $cell) |
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{ |
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if (($pCoord !== $this->currentObjectID) && ($this->currentObjectID !== null)) { |
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$this->storeData(); |
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} |
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$this->currentObjectID = $pCoord; |
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$this->currentObject = $cell; |
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$this->currentCellIsDirty = true; |
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return $cell; |
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} // function addCacheData() |
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/** |
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* Get cell at a specific coordinate |
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* |
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* @param string $pCoord Coordinate of the cell |
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* @throws PHPExcel_Exception |
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* @return PHPExcel_Cell Cell that was found, or null if not found |
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*/ |
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public function getCacheData($pCoord) |
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{ |
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if ($pCoord === $this->currentObjectID) { |
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return $this->currentObject; |
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} |
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$this->storeData(); |
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// Check if the entry that has been requested actually exists |
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if (!isset($this->cellCache[$pCoord])) { |
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// Return null if requested entry doesn't exist in cache |
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return null; |
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} |
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// Set current entry to the requested entry |
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$this->currentObjectID = $pCoord; |
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$this->currentObject = igbinary_unserialize($this->cellCache[$pCoord]); |
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// Re-attach this as the cell's parent |
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$this->currentObject->attach($this); |
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// Return requested entry |
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return $this->currentObject; |
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} // function getCacheData() |
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/** |
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* Get a list of all cell addresses currently held in cache |
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* |
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* @return string[] |
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*/ |
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public function getCellList() |
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{ |
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if ($this->currentObjectID !== null) { |
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$this->storeData(); |
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} |
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return parent::getCellList(); |
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} |
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/** |
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* Clear the cell collection and disconnect from our parent |
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* |
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* @return void |
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*/ |
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public function unsetWorksheetCells() |
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{ |
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if (!is_null($this->currentObject)) { |
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$this->currentObject->detach(); |
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$this->currentObject = $this->currentObjectID = null; |
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} |
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$this->cellCache = array(); |
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// detach ourself from the worksheet, so that it can then delete this object successfully |
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$this->parent = null; |
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} // function unsetWorksheetCells() |
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/** |
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* Identify whether the caching method is currently available |
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* Some methods are dependent on the availability of certain extensions being enabled in the PHP build |
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* |
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* @return boolean |
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*/ |
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public static function cacheMethodIsAvailable() |
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{ |
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if (!function_exists('igbinary_serialize')) { |
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return false; |
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} |
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return true; |
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} |
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}
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