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

MemorySerialized.php in Visualizer – Tables & Charts Manager with Built-in AI Generator 3.1.2, at vendor/phpoffice/phpexcel/Classes/PHPExcel/CachedObjectStorage/MemorySerialized.php

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1	<?php
2
3	/**
4	* PHPExcel_CachedObjectStorage_MemorySerialized
5	*
6	* Copyright (c) 2006 - 2015 PHPExcel
7	*
8	* This library is free software; you can redistribute it and/or
9	* modify it under the terms of the GNU Lesser General Public
10	* License as published by the Free Software Foundation; either
11	* version 2.1 of the License, or (at your option) any later version.
12	*
13	* This library is distributed in the hope that it will be useful,
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16	* Lesser General Public License for more details.
17	*
18	* You should have received a copy of the GNU Lesser General Public
19	* License along with this library; if not, write to the Free Software
20	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21	*
22	* @category PHPExcel
23	* @package PHPExcel_CachedObjectStorage
24	* @copyright Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
25	* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
26	* @version ##VERSION##, ##DATE##
27	*/
28	class PHPExcel_CachedObjectStorage_MemorySerialized extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
29	{
30	/**
31	* Store cell data in cache for the current cell object if it's "dirty",
32	* and the 'nullify' the current cell object
33	*
34	* @return void
35	* @throws PHPExcel_Exception
36	*/
37	protected function storeData()
38	{
39	if ($this->currentCellIsDirty && !empty($this->currentObjectID)) {
40	$this->currentObject->detach();
41
42	$this->cellCache[$this->currentObjectID] = serialize($this->currentObject);
43	$this->currentCellIsDirty = false;
44	}
45	$this->currentObjectID = $this->currentObject = null;
46	}
47
48	/**
49	* Add or Update a cell in cache identified by coordinate address
50	*
51	* @param string $pCoord Coordinate address of the cell to update
52	* @param PHPExcel_Cell $cell Cell to update
53	* @return PHPExcel_Cell
54	* @throws PHPExcel_Exception
55	*/
56	public function addCacheData($pCoord, PHPExcel_Cell $cell)
57	{
58	if (($pCoord !== $this->currentObjectID) && ($this->currentObjectID !== null)) {
59	$this->storeData();
60	}
61
62	$this->currentObjectID = $pCoord;
63	$this->currentObject = $cell;
64	$this->currentCellIsDirty = true;
65
66	return $cell;
67	}
68
69	/**
70	* Get cell at a specific coordinate
71	*
72	* @param string $pCoord Coordinate of the cell
73	* @throws PHPExcel_Exception
74	* @return PHPExcel_Cell Cell that was found, or null if not found
75	*/
76	public function getCacheData($pCoord)
77	{
78	if ($pCoord === $this->currentObjectID) {
79	return $this->currentObject;
80	}
81	$this->storeData();
82
83	// Check if the entry that has been requested actually exists
84	if (!isset($this->cellCache[$pCoord])) {
85	// Return null if requested entry doesn't exist in cache
86	return null;
87	}
88
89	// Set current entry to the requested entry
90	$this->currentObjectID = $pCoord;
91	$this->currentObject = unserialize($this->cellCache[$pCoord]);
92	// Re-attach this as the cell's parent
93	$this->currentObject->attach($this);
94
95	// Return requested entry
96	return $this->currentObject;
97	}
98
99	/**
100	* Get a list of all cell addresses currently held in cache
101	*
102	* @return string[]
103	*/
104	public function getCellList()
105	{
106	if ($this->currentObjectID !== null) {
107	$this->storeData();
108	}
109
110	return parent::getCellList();
111	}
112
113	/**
114	* Clear the cell collection and disconnect from our parent
115	*
116	* @return void
117	*/
118	public function unsetWorksheetCells()
119	{
120	if (!is_null($this->currentObject)) {
121	$this->currentObject->detach();
122	$this->currentObject = $this->currentObjectID = null;
123	}
124	$this->cellCache = array();
125
126	// detach ourself from the worksheet, so that it can then delete this object successfully
127	$this->parent = null;
128	}
129	}
130