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<?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_Worksheet
* @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 1.7.7, 2012-05-19
*/
/**
* PHPExcel_Worksheet_CellIterator
*
* Used to iterate rows in a PHPExcel_Worksheet
*
* @category PHPExcel
* @package PHPExcel_Worksheet
* @copyright Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
*/
class PHPExcel_Worksheet_CellIterator implements Iterator
{
/**
* PHPExcel_Worksheet to iterate
*
* @var PHPExcel_Worksheet
*/
private $_subject;
/**
* Row index
*
* @var int
*/
private $_rowIndex;
/**
* Current iterator position
*
* @var int
*/
private $_position = 0;
/**
* Loop only existing cells
*
* @var boolean
*/
private $_onlyExistingCells = true;
/**
* Create a new cell iterator
*
* @param PHPExcel_Worksheet $subject
* @param int $rowIndex
*/
public function __construct(PHPExcel_Worksheet $subject = null, $rowIndex = 1) {
// Set subject and row index
$this->_subject = $subject;
$this->_rowIndex = $rowIndex;
}
/**
* Destructor
*/
public function __destruct() {
unset($this->_subject);
}
/**
* Rewind iterator
*/
public function rewind() {
$this->_position = 0;
}
/**
* Current PHPExcel_Cell
*
* @return PHPExcel_Cell
*/
public function current() {
return $this->_subject->getCellByColumnAndRow($this->_position, $this->_rowIndex);
}
/**
* Current key
*
* @return int
*/
public function key() {
return $this->_position;
}
/**
* Next value
*/
public function next() {
++$this->_position;
}
/**
* Are there any more PHPExcel_Cell instances available?
*
* @return boolean
*/
public function valid() {
// columnIndexFromString() returns an index based at one,
// treat it as a count when comparing it to the base zero
// position.
$columnCount = PHPExcel_Cell::columnIndexFromString($this->_subject->getHighestColumn());
if ($this->_onlyExistingCells) {
// If we aren't looking at an existing cell, either
// because the first column doesn't exist or next() has
// been called onto a nonexistent cell, then loop until we
// find one, or pass the last column.
while ($this->_position < $columnCount &&
!$this->_subject->cellExistsByColumnAndRow($this->_position, $this->_rowIndex)) {
++$this->_position;
}
}
return $this->_position < $columnCount;
}
/**
* Get loop only existing cells
*
* @return boolean
*/
public function getIterateOnlyExistingCells() {
return $this->_onlyExistingCells;
}
/**
* Set the iterator to loop only existing cells
*
* @param boolean $value
*/
public function setIterateOnlyExistingCells($value = true) {
$this->_onlyExistingCells = $value;
}
}