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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_Worksheet * @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_Worksheet_ColumnCellIterator * * Used to iterate columns in a PHPExcel_Worksheet * * @category PHPExcel * @package PHPExcel_Worksheet * @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel) */ class PHPExcel_Worksheet_ColumnCellIterator extends PHPExcel_Worksheet_CellIterator implements Iterator { /** * Column index * * @var string */ protected $_columnIndex; /** * Start position * * @var int */ protected $_startRow = 1; /** * End position * * @var int */ protected $_endRow = 1; /** * Create a new row iterator * * @param PHPExcel_Worksheet $subject The worksheet to iterate over * @param string $columnIndex The column that we want to iterate * @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 = null, $columnIndex, $startRow = 1, $endRow = null) { // Set subject $this->_subject = $subject; $this->_columnIndex = PHPExcel_Cell::columnIndexFromString($columnIndex) - 1; $this->resetEnd($endRow); $this->resetStart($startRow); } /** * Destructor */ public function __destruct() { unset($this->_subject); } /** * (Re)Set the start row and the current row pointer * * @param integer $startRow The row number at which to start iterating * @return PHPExcel_Worksheet_ColumnCellIterator * @throws PHPExcel_Exception */ public function resetStart($startRow = 1) { $this->_startRow = $startRow; $this->adjustForExistingOnlyRange(); $this->seek($startRow); return $this; } /** * (Re)Set the end row * * @param integer $endRow The row number at which to stop iterating * @return PHPExcel_Worksheet_ColumnCellIterator * @throws PHPExcel_Exception */ public function resetEnd($endRow = null) { $this->_endRow = ($endRow) ? $endRow : $this->_subject->getHighestRow(); $this->adjustForExistingOnlyRange(); return $this; } /** * Set the row pointer to the selected row * * @param integer $row The row number to set the current pointer at * @return PHPExcel_Worksheet_ColumnCellIterator * @throws PHPExcel_Exception */ public function seek($row = 1) { if (($row < $this->_startRow) || ($row > $this->_endRow)) { throw new PHPExcel_Exception("Row $row is out of range ({$this->_startRow} - {$this->_endRow})"); } elseif ($this->_onlyExistingCells && !($this->_subject->cellExistsByColumnAndRow($this->_columnIndex, $row))) { throw new PHPExcel_Exception('In "IterateOnlyExistingCells" mode and Cell does not exist'); } $this->_position = $row; return $this; } /** * Rewind the iterator to the starting row */ public function rewind() { $this->_position = $this->_startRow; } /** * Return the current cell in this worksheet column * * @return PHPExcel_Worksheet_Row */ public function current() { return $this->_subject->getCellByColumnAndRow($this->_columnIndex, $this->_position); } /** * Return the current iterator key * * @return int */ public function key() { return $this->_position; } /** * Set the iterator to its next value */ public function next() { do { ++$this->_position; } while (($this->_onlyExistingCells) && (!$this->_subject->cellExistsByColumnAndRow($this->_columnIndex, $this->_position)) && ($this->_position <= $this->_endRow)); } /** * Set the iterator to its previous value */ public function prev() { if ($this->_position <= $this->_startRow) { throw new PHPExcel_Exception("Row is already at the beginning of range ({$this->_startRow} - {$this->_endRow})"); } do { --$this->_position; } while (($this->_onlyExistingCells) && (!$this->_subject->cellExistsByColumnAndRow($this->_columnIndex, $this->_position)) && ($this->_position >= $this->_startRow)); } /** * Indicate if more rows exist in the worksheet range of rows that we're iterating * * @return boolean */ public function valid() { return $this->_position <= $this->_endRow; } /** * Validate start/end values for "IterateOnlyExistingCells" mode, and adjust if necessary * * @throws PHPExcel_Exception */ protected function adjustForExistingOnlyRange() { if ($this->_onlyExistingCells) { while ((!$this->_subject->cellExistsByColumnAndRow($this->_columnIndex, $this->_startRow)) && ($this->_startRow <= $this->_endRow)) { ++$this->_startRow; } if ($this->_startRow > $this->_endRow) { throw new PHPExcel_Exception('No cells exist within the specified range'); } while ((!$this->_subject->cellExistsByColumnAndRow($this->_columnIndex, $this->_endRow)) && ($this->_endRow >= $this->_startRow)) { --$this->_endRow; } if ($this->_endRow < $this->_startRow) { throw new PHPExcel_Exception('No cells exist within the specified range'); } } } }
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