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<?php
/**
* PHPExcel_Worksheet_RowIterator
*
* Copyright (c) 2006 - 2015 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 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
* @version ##VERSION##, ##DATE##
*/
class PHPExcel_Worksheet_RowIterator implements Iterator
{
/**
* PHPExcel_Worksheet to iterate
*
* @var PHPExcel_Worksheet
*/
private $subject;
/**
* Current iterator position
*
* @var int
*/
private $position = 1;
/**
* Start position
*
* @var int
*/
private $startRow = 1;
/**
* End position
*
* @var int
*/
private $endRow = 1;
/**
* Create a new row iterator
*
* @param PHPExcel_Worksheet $subject The worksheet to iterate over
* @param integer $startRow The row number at which to start iterating
* @param integer $endRow Optionally, the row number at which to stop iterating
*/
public function __construct(PHPExcel_Worksheet $subject, $startRow = 1, $endRow = null)
{
// Set subject
$this->subject = $subject;
$this->resetEnd($endRow);
$this->resetStart($startRow);
}
/**
* Destructor
*/
public function __destruct()
{
unset($this->subject);
}
/**
* (Re)Set the start row and the current row pointer
*
* @param integer $startRow The row number at which to start iterating
* @return PHPExcel_Worksheet_RowIterator
* @throws PHPExcel_Exception
*/
public function resetStart($startRow = 1)
{
if ($startRow > $this->subject->getHighestRow()) {
throw new PHPExcel_Exception("Start row ({$startRow}) is beyond highest row ({$this->subject->getHighestRow()})");
}
$this->startRow = $startRow;
if ($this->endRow < $this->startRow) {
$this->endRow = $this->startRow;
}
$this->seek($startRow);
return $this;
}
/**
* (Re)Set the end row
*
* @param integer $endRow The row number at which to stop iterating
* @return PHPExcel_Worksheet_RowIterator
*/
public function resetEnd($endRow = null)
{
$this->endRow = ($endRow) ? $endRow : $this->subject->getHighestRow();
return $this;
}
/**
* Set the row pointer to the selected row
*
* @param integer $row The row number to set the current pointer at
* @return PHPExcel_Worksheet_RowIterator
* @throws PHPExcel_Exception
*/
public function seek($row = 1)
{
if (($row < $this->startRow) || ($row > $this->endRow)) {
throw new PHPExcel_Exception("Row $row is out of range ({$this->startRow} - {$this->endRow})");
}
$this->position = $row;
return $this;
}
/**
* Rewind the iterator to the starting row
*/
public function rewind()
{
$this->position = $this->startRow;
}
/**
* Return the current row in this worksheet
*
* @return PHPExcel_Worksheet_Row
*/
public function current()
{
return new PHPExcel_Worksheet_Row($this->subject, $this->position);
}
/**
* Return the current iterator key
*
* @return int
*/
public function key()
{
return $this->position;
}
/**
* Set the iterator to its next value
*/
public function next()
{
++$this->position;
}
/**
* Set the iterator to its previous value
*/
public function prev()
{
if ($this->position <= $this->startRow) {
throw new PHPExcel_Exception("Row is already at the beginning of range ({$this->startRow} - {$this->endRow})");
}
--$this->position;
}
/**
* Indicate if more rows exist in the worksheet range of rows that we're iterating
*
* @return boolean
*/
public function valid()
{
return $this->position <= $this->endRow;
}
}