ODS Writer should accept associative arrays (#232)

src/Spout/Writer/ODS/Internal/Worksheet.php

@@ -134,6 +134,10 @@ class Worksheet implements WorksheetInterface
      */
     public function addRow($dataRow, $style)
     {
+        // $dataRow can be an associative array. We need to transform
+        // it into a regular array, as we'll use the numeric indexes.
+        $dataRowWithNumericIndexes = array_values($dataRow);
+
         $styleIndex = ($style->getId() + 1); // 1-based
         $cellsCount = count($dataRow);
         $this->maxNumColumns = max($this->maxNumColumns, $cellsCount);
@@ -144,10 +148,12 @@ class Worksheet implements WorksheetInterface
         $nextCellIndex = 1;
 
         for ($i = 0; $i < $cellsCount; $i++) {
-            $currentCellValue = $dataRow[$currentCellIndex];
+            $currentCellValue = $dataRowWithNumericIndexes[$currentCellIndex];
 
             // Using isset here because it is way faster than array_key_exists...
-            if (!isset($dataRow[$nextCellIndex]) || $currentCellValue !== $dataRow[$nextCellIndex]) {
+            if (!isset($dataRowWithNumericIndexes[$nextCellIndex]) ||
+                $currentCellValue !== $dataRowWithNumericIndexes[$nextCellIndex]) {
+
                 $numTimesValueRepeated = ($nextCellIndex - $currentCellIndex);
                 $data .= $this->getCellContent($currentCellValue, $styleIndex, $numTimesValueRepeated);