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<?php
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namespace PhpOffice\PhpSpreadsheet\Writer\Ods;
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use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
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use PhpOffice\PhpSpreadsheet\DefinedName;
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class Formula
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{
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/** @var array */
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private $definedNames = [];
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/**
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* @param DefinedName[] $definedNames
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*/
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public function __construct(array $definedNames)
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{
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foreach ($definedNames as $definedName) {
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$this->definedNames[] = $definedName->getName();
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}
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}
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public function convertFormula(string $formula, string $worksheetName = ''): string
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{
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$formula = $this->convertCellReferences($formula, $worksheetName);
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$formula = $this->convertDefinedNames($formula);
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if (substr($formula, 0, 1) !== '=') {
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$formula = '=' . $formula;
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}
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return 'of:' . $formula;
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}
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private function convertDefinedNames(string $formula): string
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{
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$splitCount = preg_match_all(
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'/' . Calculation::CALCULATION_REGEXP_DEFINEDNAME . '/mui',
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$formula,
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$splitRanges,
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PREG_OFFSET_CAPTURE
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);
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$lengths = array_map('strlen', array_column($splitRanges[0], 0));
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$offsets = array_column($splitRanges[0], 1);
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$values = array_column($splitRanges[0], 0);
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while ($splitCount > 0) {
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--$splitCount;
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$length = $lengths[$splitCount];
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$offset = $offsets[$splitCount];
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$value = $values[$splitCount];
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if (in_array($value, $this->definedNames, true)) {
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$formula = substr($formula, 0, $offset) . '$$' . $value . substr($formula, $offset + $length);
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}
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}
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return $formula;
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}
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private function convertCellReferences(string $formula, string $worksheetName): string
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{
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$splitCount = preg_match_all(
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'/' . Calculation::CALCULATION_REGEXP_CELLREF_RELATIVE . '/mui',
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$formula,
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$splitRanges,
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PREG_OFFSET_CAPTURE
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);
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$lengths = array_map('strlen', array_column($splitRanges[0], 0));
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$offsets = array_column($splitRanges[0], 1);
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$worksheets = $splitRanges[2];
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$columns = $splitRanges[6];
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$rows = $splitRanges[7];
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// Replace any commas in the formula with semi-colons for Ods
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// If by chance there are commas in worksheet names, then they will be "fixed" again in the loop
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// because we've already extracted worksheet names with our preg_match_all()
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$formula = str_replace(',', ';', $formula);
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while ($splitCount > 0) {
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--$splitCount;
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$length = $lengths[$splitCount];
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$offset = $offsets[$splitCount];
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$worksheet = $worksheets[$splitCount][0];
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$column = $columns[$splitCount][0];
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$row = $rows[$splitCount][0];
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$newRange = '';
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if (empty($worksheet)) {
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if (($offset === 0) || ($formula[$offset - 1] !== ':')) {
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// We need a worksheet
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$worksheet = $worksheetName;
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}
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} else {
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$worksheet = str_replace("''", "'", trim($worksheet, "'"));
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}
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if (!empty($worksheet)) {
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$newRange = "['" . str_replace("'", "''", $worksheet) . "'";
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} elseif (substr($formula, $offset - 1, 1) !== ':') {
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$newRange = '[';
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}
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$newRange .= '.';
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if (!empty($column)) {
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$newRange .= $column;
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}
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if (!empty($row)) {
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$newRange .= $row;
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}
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// close the wrapping [] unless this is the first part of a range
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$newRange .= substr($formula, $offset + $length, 1) !== ':' ? ']' : '';
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$formula = substr($formula, 0, $offset) . $newRange . substr($formula, $offset + $length);
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}
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return $formula;
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}
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}
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