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<?php
namespace PhpOffice\PhpSpreadsheet\Calculation\LookupRef;
use Exception;
use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
use PhpOffice\PhpSpreadsheet\Calculation\Functions;
use PhpOffice\PhpSpreadsheet\Calculation\Information\ExcelError;
use PhpOffice\PhpSpreadsheet\Cell\Cell;
use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
class Indirect
{
/**
* Determine whether cell address is in A1 (true) or R1C1 (false) format.
*
* @param mixed $a1fmt Expect bool Helpers::CELLADDRESS_USE_A1 or CELLADDRESS_USE_R1C1,
* but can be provided as numeric which is cast to bool
*/
private static function a1Format($a1fmt): bool
{
$a1fmt = Functions::flattenSingleValue($a1fmt);
if ($a1fmt === null) {
return Helpers::CELLADDRESS_USE_A1;
}
if (is_string($a1fmt)) {
throw new Exception(ExcelError::VALUE());
}
return (bool) $a1fmt;
}
/**
* Convert cellAddress to string, verify not null string.
*
* @param array|string $cellAddress
*/
private static function validateAddress($cellAddress): string
{
$cellAddress = Functions::flattenSingleValue($cellAddress);
if (!is_string($cellAddress) || !$cellAddress) {
throw new Exception(ExcelError::REF());
}
return $cellAddress;
}
/**
* INDIRECT.
*
* Returns the reference specified by a text string.
* References are immediately evaluated to display their contents.
*
* Excel Function:
* =INDIRECT(cellAddress, bool) where the bool argument is optional
*
* @param array|string $cellAddress $cellAddress The cell address of the current cell (containing this formula)
* @param mixed $a1fmt Expect bool Helpers::CELLADDRESS_USE_A1 or CELLADDRESS_USE_R1C1,
* but can be provided as numeric which is cast to bool
* @param Cell $cell The current cell (containing this formula)
*
* @return array|string An array containing a cell or range of cells, or a string on error
*/
public static function INDIRECT($cellAddress, $a1fmt, Cell $cell)
{
[$baseCol, $baseRow] = Coordinate::indexesFromString($cell->getCoordinate());
try {
$a1 = self::a1Format($a1fmt);
$cellAddress = self::validateAddress($cellAddress);
} catch (Exception $e) {
return $e->getMessage();
}
[$cellAddress, $worksheet, $sheetName] = Helpers::extractWorksheet($cellAddress, $cell);
if (preg_match('/^' . Calculation::CALCULATION_REGEXP_COLUMNRANGE_RELATIVE . '$/miu', $cellAddress, $matches)) {
$cellAddress = self::handleRowColumnRanges($worksheet, ...explode(':', $cellAddress));
} elseif (preg_match('/^' . Calculation::CALCULATION_REGEXP_ROWRANGE_RELATIVE . '$/miu', $cellAddress, $matches)) {
$cellAddress = self::handleRowColumnRanges($worksheet, ...explode(':', $cellAddress));
}
try {
[$cellAddress1, $cellAddress2, $cellAddress] = Helpers::extractCellAddresses($cellAddress, $a1, $cell->getWorkSheet(), $sheetName, $baseRow, $baseCol);
} catch (Exception $e) {
return ExcelError::REF();
}
if (
(!preg_match('/^' . Calculation::CALCULATION_REGEXP_CELLREF . '$/miu', $cellAddress1, $matches)) ||
(($cellAddress2 !== null) && (!preg_match('/^' . Calculation::CALCULATION_REGEXP_CELLREF . '$/miu', $cellAddress2, $matches)))
) {
return ExcelError::REF();
}
return self::extractRequiredCells($worksheet, $cellAddress);
}
/**
* Extract range values.
*
* @return mixed Array of values in range if range contains more than one element.
* Otherwise, a single value is returned.
*/
private static function extractRequiredCells(?Worksheet $worksheet, string $cellAddress)
{
return Calculation::getInstance($worksheet !== null ? $worksheet->getParent() : null)
->extractCellRange($cellAddress, $worksheet, false);
}
private static function handleRowColumnRanges(?Worksheet $worksheet, string $start, string $end): string
{
// Being lazy, we're only checking a single row/column to get the max
if (ctype_digit($start) && $start <= 1048576) {
// Max 16,384 columns for Excel2007
$endColRef = ($worksheet !== null) ? $worksheet->getHighestDataColumn((int) $start) : 'XFD';
return "A{$start}:{$endColRef}{$end}";
} elseif (ctype_alpha($start) && strlen($start) <= 3) {
// Max 1,048,576 rows for Excel2007
$endRowRef = ($worksheet !== null) ? $worksheet->getHighestDataRow($start) : 1048576;
return "{$start}1:{$end}{$endRowRef}";
}
return "{$start}:{$end}";
}
}
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