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2388 jpm 1 
<?php
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/**
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 * PHPExcel
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 *
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 * Copyright (c) 2006 - 2013 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_Worksheet
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 * @copyright  Copyright (c) 2006 - 2013 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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/**
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 * PHPExcel_Worksheet_RowIterator
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 *
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 * Used to iterate rows in a PHPExcel_Worksheet
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 *
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 * @category   PHPExcel
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 * @package	PHPExcel_Worksheet
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 * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
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 */
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class PHPExcel_Worksheet_RowIterator implements Iterator
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{
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	/**
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	 * PHPExcel_Worksheet to iterate
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	 *
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	 * @var PHPExcel_Worksheet
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	 */
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	private $_subject;
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	/**
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	 * Current iterator position
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	 *
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	 * @var int
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	 */
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	private $_position = 1;
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	/**
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	 * Start position
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	 *
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	 * @var int
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	 */
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	private $_startRow = 1;
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	/**
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	 * Create a new row iterator
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	 *
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	 * @param	PHPExcel_Worksheet	$subject	The worksheet to iterate over
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	 * @param	integer				$startRow	The row number at which to start iterating
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	 */
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	public function __construct(PHPExcel_Worksheet $subject = null, $startRow = 1) {
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		// Set subject
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		$this->_subject = $subject;
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		$this->resetStart($startRow);
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	}
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	/**
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	 * Destructor
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	 */
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	public function __destruct() {
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		unset($this->_subject);
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	}
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	/**
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	 * (Re)Set the start row and the current row pointer
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	 *
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	 * @param integer	$startRow	The row number at which to start iterating
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	 */
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	public function resetStart($startRow = 1) {
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		$this->_startRow = $startRow;
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		$this->seek($startRow);
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	}
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	/**
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	 * Set the row pointer to the selected row
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	 *
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	 * @param integer	$row	The row number to set the current pointer at
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	 */
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	public function seek($row = 1) {
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		$this->_position = $row;
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	}
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	/**
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	 * Rewind the iterator to the starting row
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	 */
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	public function rewind() {
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		$this->_position = $this->_startRow;
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	}
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	/**
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	 * Return the current row in this worksheet
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	 *
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	 * @return PHPExcel_Worksheet_Row
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	 */
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	public function current() {
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		return new PHPExcel_Worksheet_Row($this->_subject, $this->_position);
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	}
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	/**
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	 * Return the current iterator key
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	 *
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	 * @return int
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	 */
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	public function key() {
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		return $this->_position;
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	}
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	/**
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	 * Set the iterator to its next value
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	 */
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	public function next() {
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		++$this->_position;
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	}
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	/**
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	 * Set the iterator to its previous value
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	 */
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	public function prev() {
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		if ($this->_position > 1)
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			--$this->_position;
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	}
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	/**
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	 * Indicate if more rows exist in the worksheet
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	 *
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	 * @return boolean
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	 */
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	public function valid() {
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		return $this->_position <= $this->_subject->getHighestRow();
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	}
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}