JSON::generateComplex PHP Method

    private function generateComplex($generator, $data, $stripWhitespace)
    {
        $content = "";
        if ($generator->isFirstBatch()) {
            $quotedCols = Utils::enquoteArray($data["colData"]);
            if ($stripWhitespace) {
                $cols = implode(",", $quotedCols);
                $content .= "{\"cols\":[{$cols}],\"data\":[";
            } else {
                $cols = implode(",\n\t\t", $quotedCols);
                $content .= "{\n\t\"cols\": [\n\t\t{$cols}\n\t],\n\t\"data\": [\n";
            }
        }
        $numCols = count($data["colData"]);
        $numRows = count($data["rowData"]);
        for ($i = 0; $i < $numRows; $i++) {
            $rowValsArr = array();
            for ($j = 0; $j < $numCols; $j++) {
                if ($this->numericFields[$j] && is_numeric($data["rowData"][$i][$j])) {
                    $rowValsArr[] = $data["rowData"][$i][$j];
                } else {
                    $rowValsArr[] = "\"" . $data["rowData"][$i][$j] . "\"";
                }
            }
            if ($stripWhitespace) {
                $rowVals = implode(",", $rowValsArr);
                $content .= "[{$rowVals}]";
                if ($i < $numRows - 1) {
                    $content .= ",";
                }
            } else {
                $rowVals = implode(",\n\t\t\t", $rowValsArr);
                $content .= "\t\t[\n\t\t\t{$rowVals}\n\t\t]";
                if ($i < $numRows - 1) {
                    $content .= ",\n";
                } else {
                    if (!$generator->isLastBatch()) {
                        $content .= ",\n";
                    }
                }
            }
        }
        if ($generator->isLastBatch()) {
            if ($stripWhitespace) {
                $content .= "]}";
            } else {
                $content .= "\n\t]\n}";
            }
        }
        return $content;
    }