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216 lines
6.4 KiB
216 lines
6.4 KiB
<?php |
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/** |
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* PHPExcel_Worksheet_ColumnCellIterator |
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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_ColumnCellIterator extends PHPExcel_Worksheet_CellIterator implements Iterator |
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{ |
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/** |
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* Column index |
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* |
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* @var string |
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*/ |
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protected $columnIndex; |
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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 $startRow = 1; |
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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 $endRow = 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 string $columnIndex The column that we want to iterate |
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* @param integer $startRow The row number at which to start iterating |
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* @param integer $endRow Optionally, the row number at which to stop iterating |
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*/ |
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public function __construct(PHPExcel_Worksheet $subject = null, $columnIndex = 'A', $startRow = 1, $endRow = null) |
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{ |
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// Set subject |
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$this->subject = $subject; |
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$this->columnIndex = PHPExcel_Cell::columnIndexFromString($columnIndex) - 1; |
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$this->resetEnd($endRow); |
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$this->resetStart($startRow); |
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} |
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/** |
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* Destructor |
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*/ |
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public function __destruct() |
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{ |
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unset($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 $startRow The row number at which to start iterating |
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* @return PHPExcel_Worksheet_ColumnCellIterator |
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* @throws PHPExcel_Exception |
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*/ |
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public function resetStart($startRow = 1) |
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{ |
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$this->startRow = $startRow; |
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$this->adjustForExistingOnlyRange(); |
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$this->seek($startRow); |
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return $this; |
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} |
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/** |
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* (Re)Set the end row |
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* |
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* @param integer $endRow The row number at which to stop iterating |
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* @return PHPExcel_Worksheet_ColumnCellIterator |
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* @throws PHPExcel_Exception |
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*/ |
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public function resetEnd($endRow = null) |
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{ |
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$this->endRow = ($endRow) ? $endRow : $this->subject->getHighestRow(); |
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$this->adjustForExistingOnlyRange(); |
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return $this; |
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} |
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/** |
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* Set the row pointer to the selected row |
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* |
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* @param integer $row The row number to set the current pointer at |
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* @return PHPExcel_Worksheet_ColumnCellIterator |
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* @throws PHPExcel_Exception |
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*/ |
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public function seek($row = 1) |
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{ |
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if (($row < $this->startRow) || ($row > $this->endRow)) { |
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throw new PHPExcel_Exception("Row $row is out of range ({$this->startRow} - {$this->endRow})"); |
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} elseif ($this->onlyExistingCells && !($this->subject->cellExistsByColumnAndRow($this->columnIndex, $row))) { |
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throw new PHPExcel_Exception('In "IterateOnlyExistingCells" mode and Cell does not exist'); |
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} |
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$this->position = $row; |
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return $this; |
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} |
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/** |
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* Rewind the iterator to the starting row |
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*/ |
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public function rewind() |
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{ |
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$this->position = $this->startRow; |
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} |
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/** |
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* Return the current cell in this worksheet column |
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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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{ |
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return $this->subject->getCellByColumnAndRow($this->columnIndex, $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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{ |
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return $this->position; |
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} |
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/** |
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* Set the iterator to its next value |
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*/ |
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public function next() |
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{ |
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do { |
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++$this->position; |
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} while (($this->onlyExistingCells) && |
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(!$this->subject->cellExistsByColumnAndRow($this->columnIndex, $this->position)) && |
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($this->position <= $this->endRow)); |
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} |
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/** |
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* Set the iterator to its previous value |
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*/ |
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public function prev() |
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{ |
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if ($this->position <= $this->startRow) { |
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throw new PHPExcel_Exception("Row is already at the beginning of range ({$this->startRow} - {$this->endRow})"); |
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} |
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do { |
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--$this->position; |
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} while (($this->onlyExistingCells) && |
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(!$this->subject->cellExistsByColumnAndRow($this->columnIndex, $this->position)) && |
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($this->position >= $this->startRow)); |
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} |
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/** |
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* Indicate if more rows exist in the worksheet range of rows 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 <= $this->endRow; |
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} |
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/** |
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* Validate start/end values for "IterateOnlyExistingCells" mode, and adjust if necessary |
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* |
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* @throws PHPExcel_Exception |
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*/ |
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protected function adjustForExistingOnlyRange() |
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{ |
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if ($this->onlyExistingCells) { |
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while ((!$this->subject->cellExistsByColumnAndRow($this->columnIndex, $this->startRow)) && |
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($this->startRow <= $this->endRow)) { |
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++$this->startRow; |
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} |
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if ($this->startRow > $this->endRow) { |
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throw new PHPExcel_Exception('No cells exist within the specified range'); |
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} |
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while ((!$this->subject->cellExistsByColumnAndRow($this->columnIndex, $this->endRow)) && |
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($this->endRow >= $this->startRow)) { |
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--$this->endRow; |
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} |
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if ($this->endRow < $this->startRow) { |
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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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