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<?php |
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namespace PhpOffice\PhpSpreadsheet\Worksheet; |
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use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException; |
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class RowIterator implements \Iterator |
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{ |
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/** |
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* Worksheet to iterate. |
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* |
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* @var Worksheet |
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*/ |
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private $subject; |
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/** |
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* Current iterator position. |
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* |
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* @var int |
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*/ |
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private $position = 1; |
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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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private $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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private $endRow = 1; |
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/** |
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* Create a new row iterator. |
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* |
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* @param Worksheet $subject The worksheet to iterate over |
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* @param int $startRow The row number at which to start iterating |
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* @param int $endRow Optionally, the row number at which to stop iterating |
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*/ |
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public function __construct(Worksheet $subject, $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->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 int $startRow The row number at which to start iterating |
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* |
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* @throws PhpSpreadsheetException |
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* |
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* @return RowIterator |
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*/ |
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public function resetStart($startRow = 1) |
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{ |
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if ($startRow > $this->subject->getHighestRow()) { |
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throw new PhpSpreadsheetException("Start row ({$startRow}) is beyond highest row ({$this->subject->getHighestRow()})"); |
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} |
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$this->startRow = $startRow; |
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if ($this->endRow < $this->startRow) { |
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$this->endRow = $this->startRow; |
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} |
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$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 int $endRow The row number at which to stop iterating |
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* |
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* @return RowIterator |
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*/ |
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public function resetEnd($endRow = null) |
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{ |
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$this->endRow = ($endRow) ? $endRow : $this->subject->getHighestRow(); |
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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 int $row The row number to set the current pointer at |
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* |
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* @throws PhpSpreadsheetException |
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* |
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* @return RowIterator |
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*/ |
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public function seek($row = 1) |
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{ |
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if (($row < $this->startRow) || ($row > $this->endRow)) { |
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throw new PhpSpreadsheetException("Row $row is out of range ({$this->startRow} - {$this->endRow})"); |
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} |
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$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 = $this->startRow; |
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} |
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/** |
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* Return the current row in this worksheet. |
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* |
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* @return Row |
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*/ |
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public function current() |
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{ |
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return new Row($this->subject, $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 $this->position; |
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} |
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/** |
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* Set the iterator to its next value. |
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*/ |
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public function next() |
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{ |
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++$this->position; |
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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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--$this->position; |
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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 bool |
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*/ |
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public function valid() |
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{ |
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return $this->position <= $this->endRow && $this->position >= $this->startRow; |
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} |
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} |
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PHPOffice /
PhpSpreadsheet
