diff options
Diffstat (limited to 'admin/survey/excel/PHPExcel/CachedObjectStorage/DiscISAM.php')
| -rw-r--r-- | admin/survey/excel/PHPExcel/CachedObjectStorage/DiscISAM.php | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/admin/survey/excel/PHPExcel/CachedObjectStorage/DiscISAM.php b/admin/survey/excel/PHPExcel/CachedObjectStorage/DiscISAM.php new file mode 100644 index 0000000..d93ab05 --- /dev/null +++ b/admin/survey/excel/PHPExcel/CachedObjectStorage/DiscISAM.php @@ -0,0 +1,205 @@ +<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2012 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 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
+ * @version 1.7.8, 2012-10-12
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_DiscISAM
+ *
+ * @category PHPExcel
+ * @package PHPExcel_CachedObjectStorage
+ * @copyright Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_DiscISAM extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+ /**
+ * Name of the file for this cache
+ *
+ * @var string
+ */
+ private $_fileName = null;
+
+ /**
+ * File handle for this cache file
+ *
+ * @var resource
+ */
+ private $_fileHandle = null;
+
+ /**
+ * Directory/Folder where the cache file is located
+ *
+ * @var string
+ */
+ private $_cacheDirectory = NULL;
+
+
+ /**
+ * Store cell data in cache for the current cell object if it's "dirty",
+ * and the 'nullify' the current cell object
+ *
+ * @return void
+ * @throws Exception
+ */
+ private function _storeData() {
+ if ($this->_currentCellIsDirty) {
+ $this->_currentObject->detach();
+
+ fseek($this->_fileHandle,0,SEEK_END);
+ $offset = ftell($this->_fileHandle);
+ fwrite($this->_fileHandle, serialize($this->_currentObject));
+ $this->_cellCache[$this->_currentObjectID] = array('ptr' => $offset,
+ 'sz' => ftell($this->_fileHandle) - $offset
+ );
+ $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 $cell Cell to update
+ * @return void
+ * @throws Exception
+ */
+ public function addCacheData($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 $pCoord Coordinate of the cell
+ * @throws Exception
+ * @return PHPExcel_Cell Cell that was found, or null if not found
+ */
+ public function getCacheData($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 = $pCoord;
+ fseek($this->_fileHandle,$this->_cellCache[$pCoord]['ptr']);
+ $this->_currentObject = unserialize(fread($this->_fileHandle,$this->_cellCache[$pCoord]['sz']));
+ // Re-attach the parent worksheet
+ $this->_currentObject->attach($this->_parent);
+
+ // Return requested entry
+ return $this->_currentObject;
+ } // function getCacheData()
+
+
+ /**
+ * Clone the cell collection
+ *
+ * @param PHPExcel_Worksheet $parent The new worksheet
+ * @return void
+ */
+ public function copyCellCollection(PHPExcel_Worksheet $parent) {
+ parent::copyCellCollection($parent);
+ // Get a new id for the new file name
+ $baseUnique = $this->_getUniqueID();
+ $newFileName = $this->_cacheDirectory.'/PHPExcel.'.$baseUnique.'.cache';
+ // Copy the existing cell cache file
+ copy ($this->_fileName,$newFileName);
+ $this->_fileName = $newFileName;
+ // Open the copied cell cache file
+ $this->_fileHandle = fopen($this->_fileName,'a+');
+ } // function copyCellCollection()
+
+
+ /**
+ * 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;
+
+ // Close down the temporary cache file
+ $this->__destruct();
+ } // function unsetWorksheetCells()
+
+
+ /**
+ * Initialise this new cell collection
+ *
+ * @param PHPExcel_Worksheet $parent The worksheet for this cell collection
+ * @param array of mixed $arguments Additional initialisation arguments
+ */
+ public function __construct(PHPExcel_Worksheet $parent, $arguments) {
+ $this->_cacheDirectory = ((isset($arguments['dir'])) && ($arguments['dir'] !== NULL))
+ ? $arguments['dir']
+ : PHPExcel_Shared_File::sys_get_temp_dir();
+
+ parent::__construct($parent);
+ if (is_null($this->_fileHandle)) {
+ $baseUnique = $this->_getUniqueID();
+ $this->_fileName = $this->_cacheDirectory.'/PHPExcel.'.$baseUnique.'.cache';
+ $this->_fileHandle = fopen($this->_fileName,'a+');
+ }
+ } // function __construct()
+
+
+ /**
+ * Destroy this cell collection
+ */
+ public function __destruct() {
+ if (!is_null($this->_fileHandle)) {
+ fclose($this->_fileHandle);
+ unlink($this->_fileName);
+ }
+ $this->_fileHandle = null;
+ } // function __destruct()
+
+}
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