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<?php
namespace PhpOffice\PhpSpreadsheet\Cell;
use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
use PhpOffice\PhpSpreadsheet\Calculation\Functions;
use PhpOffice\PhpSpreadsheet\Exception;
/**
* Validate a cell value according to its validation rules.
*/
class DataValidator
{
/**
* Does this cell contain valid value?
*
* @param Cell $cell Cell to check the value
*
* @return bool
*/
public function isValid(Cell $cell)
{
if (!$cell->hasDataValidation()) {
return true;
}
$cellValue = $cell->getValue();
$dataValidation = $cell->getDataValidation();
if (!$dataValidation->getAllowBlank() && ($cellValue === null || $cellValue === '')) {
return false;
}
// TODO: write check on all cases
switch ($dataValidation->getType()) {
case DataValidation::TYPE_LIST:
return $this->isValueInList($cell);
}
return false;
}
/**
* Does this cell contain valid value, based on list?
*
* @param Cell $cell Cell to check the value
*
* @return bool
*/
private function isValueInList(Cell $cell)
{
$cellValue = $cell->getValue();
$dataValidation = $cell->getDataValidation();
$formula1 = $dataValidation->getFormula1();
if (!empty($formula1)) {
// inline values list
if ($formula1[0] === '"') {
return in_array(strtolower($cellValue), explode(',', strtolower(trim($formula1, '"'))), true);
} elseif (strpos($formula1, ':') > 0) {
// values list cells
$matchFormula = '=MATCH(' . $cell->getCoordinate() . ', ' . $formula1 . ', 0)';
$calculation = Calculation::getInstance($cell->getWorksheet()->getParent());
try {
$result = $calculation->calculateFormula($matchFormula, $cell->getCoordinate(), $cell);
return $result !== Functions::NA();
} catch (Exception $ex) {
return false;
}
}
}
return true;
}
}