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<?php /** * PHPExcel * * Copyright (c) 2006 - 2014 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 * @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel) * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL * @version ##VERSION##, ##DATE## */ /** * PHPExcel_HashTable * * @category PHPExcel * @package PHPExcel * @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel) */ class PHPExcel_HashTable { /** * HashTable elements * * @var array */ public $_items = array(); /** * HashTable key map * * @var array */ public $_keyMap = array(); /** * Create a new PHPExcel_HashTable * * @param PHPExcel_IComparable[] $pSource Optional source array to create HashTable from * @throws PHPExcel_Exception */ public function __construct($pSource = null) { if ($pSource !== NULL) { // Create HashTable $this->addFromSource($pSource); } } /** * Add HashTable items from source * * @param PHPExcel_IComparable[] $pSource Source array to create HashTable from * @throws PHPExcel_Exception */ public function addFromSource($pSource = null) { // Check if an array was passed if ($pSource == null) { return; } else if (!is_array($pSource)) { throw new PHPExcel_Exception('Invalid array parameter passed.'); } foreach ($pSource as $item) { $this->add($item); } } /** * Add HashTable item * * @param PHPExcel_IComparable $pSource Item to add * @throws PHPExcel_Exception */ public function add(PHPExcel_IComparable $pSource = null) { $hash = $pSource->getHashCode(); if (!isset($this->_items[$hash])) { $this->_items[$hash] = $pSource; $this->_keyMap[count($this->_items) - 1] = $hash; } } /** * Remove HashTable item * * @param PHPExcel_IComparable $pSource Item to remove * @throws PHPExcel_Exception */ public function remove(PHPExcel_IComparable $pSource = null) { $hash = $pSource->getHashCode(); if (isset($this->_items[$hash])) { unset($this->_items[$hash]); $deleteKey = -1; foreach ($this->_keyMap as $key => $value) { if ($deleteKey >= 0) { $this->_keyMap[$key - 1] = $value; } if ($value == $hash) { $deleteKey = $key; } } unset($this->_keyMap[count($this->_keyMap) - 1]); } } /** * Clear HashTable * */ public function clear() { $this->_items = array(); $this->_keyMap = array(); } /** * Count * * @return int */ public function count() { return count($this->_items); } /** * Get index for hash code * * @param string $pHashCode * @return int Index */ public function getIndexForHashCode($pHashCode = '') { return array_search($pHashCode, $this->_keyMap); } /** * Get by index * * @param int $pIndex * @return PHPExcel_IComparable * */ public function getByIndex($pIndex = 0) { if (isset($this->_keyMap[$pIndex])) { return $this->getByHashCode( $this->_keyMap[$pIndex] ); } return null; } /** * Get by hashcode * * @param string $pHashCode * @return PHPExcel_IComparable * */ public function getByHashCode($pHashCode = '') { if (isset($this->_items[$pHashCode])) { return $this->_items[$pHashCode]; } return null; } /** * HashTable to array * * @return PHPExcel_IComparable[] */ public function toArray() { return $this->_items; } /** * Implement PHP __clone to create a deep clone, not just a shallow copy. */ public function __clone() { $vars = get_object_vars($this); foreach ($vars as $key => $value) { if (is_object($value)) { $this->$key = clone $value; } } } }
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