visualizer / vendor / phpoffice / phpexcel / Classes / PHPExcel / CachedObjectStorage / MemorySerialized.php

MemorySerialized.php in Visualizer – Tables & Charts Manager with Built-in AI Generator 3.0.3, at vendor/phpoffice/phpexcel/Classes/PHPExcel/CachedObjectStorage/MemorySerialized.php

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1	<?php
2	/**
3	* PHPExcel
4	*
5	* Copyright (c) 2006 - 2014 PHPExcel
6	*
7	* This library is free software; you can redistribute it and/or
8	* modify it under the terms of the GNU Lesser General Public
9	* License as published by the Free Software Foundation; either
10	* version 2.1 of the License, or (at your option) any later version.
11	*
12	* This library is distributed in the hope that it will be useful,
13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15	* Lesser General Public License for more details.
16	*
17	* You should have received a copy of the GNU Lesser General Public
18	* License along with this library; if not, write to the Free Software
19	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20	*
21	* @category PHPExcel
22	* @package PHPExcel_CachedObjectStorage
23	* @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
24	* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
25	* @version ##VERSION##, ##DATE##
26	*/
27
28
29	/**
30	* PHPExcel_CachedObjectStorage_MemorySerialized
31	*
32	* @category PHPExcel
33	* @package PHPExcel_CachedObjectStorage
34	* @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
35	*/
36	class PHPExcel_CachedObjectStorage_MemorySerialized extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
37
38	/**
39	* Store cell data in cache for the current cell object if it's "dirty",
40	* and the 'nullify' the current cell object
41	*
42	* @return void
43	* @throws PHPExcel_Exception
44	*/
45	protected function _storeData() {
46	if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
47	$this->_currentObject->detach();
48
49	$this->_cellCache[$this->_currentObjectID] = serialize($this->_currentObject);
50	$this->_currentCellIsDirty = false;
51	}
52	$this->_currentObjectID = $this->_currentObject = null;
53	} // function _storeData()
54
55
56	/**
57	* Add or Update a cell in cache identified by coordinate address
58	*
59	* @param string $pCoord Coordinate address of the cell to update
60	* @param PHPExcel_Cell $cell Cell to update
61	* @return PHPExcel_Cell
62	* @throws PHPExcel_Exception
63	*/
64	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
65	if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
66	$this->_storeData();
67	}
68
69	$this->_currentObjectID = $pCoord;
70	$this->_currentObject = $cell;
71	$this->_currentCellIsDirty = true;
72
73	return $cell;
74	} // function addCacheData()
75
76
77	/**
78	* Get cell at a specific coordinate
79	*
80	* @param string $pCoord Coordinate of the cell
81	* @throws PHPExcel_Exception
82	* @return PHPExcel_Cell Cell that was found, or null if not found
83	*/
84	public function getCacheData($pCoord) {
85	if ($pCoord === $this->_currentObjectID) {
86	return $this->_currentObject;
87	}
88	$this->_storeData();
89
90	// Check if the entry that has been requested actually exists
91	if (!isset($this->_cellCache[$pCoord])) {
92	// Return null if requested entry doesn't exist in cache
93	return null;
94	}
95
96	// Set current entry to the requested entry
97	$this->_currentObjectID = $pCoord;
98	$this->_currentObject = unserialize($this->_cellCache[$pCoord]);
99	// Re-attach this as the cell's parent
100	$this->_currentObject->attach($this);
101
102	// Return requested entry
103	return $this->_currentObject;
104	} // function getCacheData()
105
106
107	/**
108	* Get a list of all cell addresses currently held in cache
109	*
110	* @return string[]
111	*/
112	public function getCellList() {
113	if ($this->_currentObjectID !== null) {
114	$this->_storeData();
115	}
116
117	return parent::getCellList();
118	}
119
120
121	/**
122	* Clear the cell collection and disconnect from our parent
123	*
124	* @return void
125	*/
126	public function unsetWorksheetCells() {
127	if(!is_null($this->_currentObject)) {
128	$this->_currentObject->detach();
129	$this->_currentObject = $this->_currentObjectID = null;
130	}
131	$this->_cellCache = array();
132
133	// detach ourself from the worksheet, so that it can then delete this object successfully
134	$this->_parent = null;
135	} // function unsetWorksheetCells()
136
137	}
138