<?php
namespace PhpOffice\PhpSpreadsheet\Worksheet;
use PhpOffice\PhpSpreadsheet\Cell\Cell;
use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;
/**
* @extends CellIterator<string>
*/
class RowCellIterator extends CellIterator
{
/**
* Current iterator position.
*
* @var int
*/
private $currentColumnIndex;
/**
* Row index.
*
* @var int
*/
private $rowIndex = 1;
/**
* Start position.
*
* @var int
*/
private $startColumnIndex = 1;
/**
* End position.
*
* @var int
*/
private $endColumnIndex = 1;
/**
* Create a new column iterator.
*
* @param Worksheet $worksheet The worksheet to iterate over
* @param int $rowIndex The row that we want to iterate
* @param string $startColumn The column address at which to start iterating
* @param string $endColumn Optionally, the column address at which to stop iterating
*/
public function __construct(Worksheet $worksheet, $rowIndex = 1, $startColumn = 'A', $endColumn = null)
{
// Set subject and row index
$this->worksheet = $worksheet;
$this->cellCollection = $worksheet->getCellCollection();
$this->rowIndex = $rowIndex;
$this->resetEnd($endColumn);
$this->resetStart($startColumn);
}
/**
* (Re)Set the start column and the current column pointer.
*
* @param string $startColumn The column address at which to start iterating
*
* @return $this
*/
public function resetStart(string $startColumn = 'A')
{
$this->startColumnIndex = Coordinate::columnIndexFromString($startColumn);
$this->adjustForExistingOnlyRange();
$this->seek(Coordinate::stringFromColumnIndex($this->startColumnIndex));
return $this;
}
/**
* (Re)Set the end column.
*
* @param string $endColumn The column address at which to stop iterating
*
* @return $this
*/
public function resetEnd($endColumn = null)
{
$endColumn = $endColumn ?: $this->worksheet->getHighestColumn();
$this->endColumnIndex = Coordinate::columnIndexFromString($endColumn);
$this->adjustForExistingOnlyRange();
return $this;
}
/**
* Set the column pointer to the selected column.
*
* @param string $column The column address to set the current pointer at
*
* @return $this
*/
public function seek(string $column = 'A')
{
$columnId = Coordinate::columnIndexFromString($column);
if ($this->onlyExistingCells && !($this->cellCollection->has($column . $this->rowIndex))) {
throw new PhpSpreadsheetException('In "IterateOnlyExistingCells" mode and Cell does not exist');
}
if (($columnId < $this->startColumnIndex) || ($columnId > $this->endColumnIndex)) {
throw new PhpSpreadsheetException("Column $column is out of range ({$this->startColumnIndex} - {$this->endColumnIndex})");
}
$this->currentColumnIndex = $columnId;
return $this;
}
/**
* Rewind the iterator to the starting column.
*/
public function rewind(): void
{
$this->currentColumnIndex = $this->startColumnIndex;
}
/**
* Return the current cell in this worksheet row.
*/
public function current(): ?Cell
{
$cellAddress = Coordinate::stringFromColumnIndex($this->currentColumnIndex) . $this->rowIndex;
return $this->cellCollection->has($cellAddress)
? $this->cellCollection->get($cellAddress)
: (
$this->ifNotExists === self::IF_NOT_EXISTS_CREATE_NEW
? $this->worksheet->createNewCell($cellAddress)
: null
);
}
/**
* Return the current iterator key.
*/
public function key(): string
{
return Coordinate::stringFromColumnIndex($this->currentColumnIndex);
}
/**
* Set the iterator to its next value.
*/
public function next(): void
{
do {
++$this->currentColumnIndex;
} while (($this->onlyExistingCells) && (!$this->cellCollection->has(Coordinate::stringFromColumnIndex($this->currentColumnIndex) . $this->rowIndex)) && ($this->currentColumnIndex <= $this->endColumnIndex));
}
/**
* Set the iterator to its previous value.
*/
public function prev(): void
{
do {
--$this->currentColumnIndex;
} while (($this->onlyExistingCells) && (!$this->cellCollection->has(Coordinate::stringFromColumnIndex($this->currentColumnIndex) . $this->rowIndex)) && ($this->currentColumnIndex >= $this->startColumnIndex));
}
/**
* Indicate if more columns exist in the worksheet range of columns that we're iterating.
*/
public function valid(): bool
{
return $this->currentColumnIndex <= $this->endColumnIndex && $this->currentColumnIndex >= $this->startColumnIndex;
}
/**
* Return the current iterator position.
*/
public function getCurrentColumnIndex(): int
{
return $this->currentColumnIndex;
}
/**
* Validate start/end values for "IterateOnlyExistingCells" mode, and adjust if necessary.
*/
protected function adjustForExistingOnlyRange(): void
{
if ($this->onlyExistingCells) {
while ((!$this->cellCollection->has(Coordinate::stringFromColumnIndex($this->startColumnIndex) . $this->rowIndex)) && ($this->startColumnIndex <= $this->endColumnIndex)) {
++$this->startColumnIndex;
}
while ((!$this->cellCollection->has(Coordinate::stringFromColumnIndex($this->endColumnIndex) . $this->rowIndex)) && ($this->endColumnIndex >= $this->startColumnIndex)) {
--$this->endColumnIndex;
}
}
}
}
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