1 files changed, 77 insertions, 0 deletions
diff --git a/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Cell/DataValidator.php b/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Cell/DataValidator.php
new file mode 100644
index 0000000..5ba9e13
--- /dev/null
+++ b/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Cell/DataValidator.php
@@ -0,0 +1,77 @@
+<?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;
+    }
+}