update PHP Excel
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inc/PHPExcel/Worksheet/RowCellIterator.php
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225
inc/PHPExcel/Worksheet/RowCellIterator.php
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<?php
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/**
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* PHPExcel_Worksheet_RowCellIterator
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*
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* Copyright (c) 2006 - 2015 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 - 2015 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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class PHPExcel_Worksheet_RowCellIterator extends PHPExcel_Worksheet_CellIterator implements Iterator
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{
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/**
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* Row index
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*
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* @var int
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*/
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protected $rowIndex;
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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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protected $startColumn = 0;
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/**
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* End position
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*
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* @var int
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*/
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protected $endColumn = 0;
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/**
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* Create a new column iterator
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*
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* @param PHPExcel_Worksheet $subject The worksheet to iterate over
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* @param integer $rowIndex The row that we want to iterate
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* @param string $startColumn The column address at which to start iterating
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* @param string $endColumn Optionally, the column address at which to stop iterating
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*/
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public function __construct(PHPExcel_Worksheet $subject = null, $rowIndex = 1, $startColumn = 'A', $endColumn = null)
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{
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// Set subject and row index
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$this->subject = $subject;
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$this->rowIndex = $rowIndex;
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$this->resetEnd($endColumn);
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$this->resetStart($startColumn);
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}
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/**
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* Destructor
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*/
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public function __destruct()
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{
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unset($this->subject);
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}
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/**
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* (Re)Set the start column and the current column pointer
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*
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* @param integer $startColumn The column address at which to start iterating
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* @return PHPExcel_Worksheet_RowCellIterator
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* @throws PHPExcel_Exception
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*/
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public function resetStart($startColumn = 'A')
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{
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$startColumnIndex = PHPExcel_Cell::columnIndexFromString($startColumn) - 1;
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$this->startColumn = $startColumnIndex;
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$this->adjustForExistingOnlyRange();
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$this->seek(PHPExcel_Cell::stringFromColumnIndex($this->startColumn));
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return $this;
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}
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/**
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* (Re)Set the end column
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*
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* @param string $endColumn The column address at which to stop iterating
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* @return PHPExcel_Worksheet_RowCellIterator
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* @throws PHPExcel_Exception
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*/
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public function resetEnd($endColumn = null)
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{
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$endColumn = ($endColumn) ? $endColumn : $this->subject->getHighestColumn();
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$this->endColumn = PHPExcel_Cell::columnIndexFromString($endColumn) - 1;
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$this->adjustForExistingOnlyRange();
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return $this;
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}
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/**
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* Set the column pointer to the selected column
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*
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* @param string $column The column address to set the current pointer at
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* @return PHPExcel_Worksheet_RowCellIterator
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* @throws PHPExcel_Exception
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*/
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public function seek($column = 'A')
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{
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$column = PHPExcel_Cell::columnIndexFromString($column) - 1;
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if (($column < $this->startColumn) || ($column > $this->endColumn)) {
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throw new PHPExcel_Exception("Column $column is out of range ({$this->startColumn} - {$this->endColumn})");
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} elseif ($this->onlyExistingCells && !($this->subject->cellExistsByColumnAndRow($column, $this->rowIndex))) {
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throw new PHPExcel_Exception('In "IterateOnlyExistingCells" mode and Cell does not exist');
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}
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$this->position = $column;
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return $this;
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}
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/**
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* Rewind the iterator to the starting column
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*/
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public function rewind()
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{
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$this->position = $this->startColumn;
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}
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/**
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* Return the current cell in this worksheet row
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*
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* @return PHPExcel_Cell
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*/
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public function current()
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{
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return $this->subject->getCellByColumnAndRow($this->position, $this->rowIndex);
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}
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/**
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* Return the current iterator key
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*
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* @return string
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*/
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public function key()
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{
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return PHPExcel_Cell::stringFromColumnIndex($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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{
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do {
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++$this->position;
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} while (($this->onlyExistingCells) &&
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(!$this->subject->cellExistsByColumnAndRow($this->position, $this->rowIndex)) &&
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($this->position <= $this->endColumn));
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}
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/**
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* Set the iterator to its previous value
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*
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* @throws PHPExcel_Exception
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*/
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public function prev()
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{
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if ($this->position <= $this->startColumn) {
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throw new PHPExcel_Exception(
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"Column is already at the beginning of range (" .
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PHPExcel_Cell::stringFromColumnIndex($this->endColumn) . " - " .
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PHPExcel_Cell::stringFromColumnIndex($this->endColumn) . ")"
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);
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}
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do {
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--$this->position;
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} while (($this->onlyExistingCells) &&
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(!$this->subject->cellExistsByColumnAndRow($this->position, $this->rowIndex)) &&
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($this->position >= $this->startColumn));
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}
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/**
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* Indicate if more columns exist in the worksheet range of columns that we're iterating
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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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{
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return $this->position <= $this->endColumn;
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}
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/**
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* Validate start/end values for "IterateOnlyExistingCells" mode, and adjust if necessary
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*
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* @throws PHPExcel_Exception
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*/
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protected function adjustForExistingOnlyRange()
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{
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if ($this->onlyExistingCells) {
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while ((!$this->subject->cellExistsByColumnAndRow($this->startColumn, $this->rowIndex)) &&
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($this->startColumn <= $this->endColumn)) {
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++$this->startColumn;
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}
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if ($this->startColumn > $this->endColumn) {
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throw new PHPExcel_Exception('No cells exist within the specified range');
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}
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while ((!$this->subject->cellExistsByColumnAndRow($this->endColumn, $this->rowIndex)) &&
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($this->endColumn >= $this->startColumn)) {
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--$this->endColumn;
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}
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if ($this->endColumn < $this->startColumn) {
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throw new PHPExcel_Exception('No cells exist within the specified range');
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}
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}
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}
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}
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