public function execute()
 {
     $this->init();
     $this->reader->seek(max(0, waRequest::request('row', 0, waRequest::TYPE_INT)));
     $limit = max(1, waRequest::request('limit', 50, waRequest::TYPE_INT));
     $this->reader->columns(array(array('shopCsvProductviewController', 'tableRowHandler'), array(__CLASS__, 'columns')));
     $n = 0;
     $this->response['tbody'] = '';
     while (++$n <= $limit && $this->reader->next()) {
         $this->response['tbody'] .= $this->reader->getTableRow();
     }
     $this->response['rows_count'] = $this->reader->count();
     $this->response['current'] = $this->reader->key();
 }
 protected function info()
 {
     $interval = 0;
     if (!empty($this->data['timestamp'])) {
         $interval = time() - $this->data['timestamp'];
     }
     $response = array('time' => sprintf('%d:%02d:%02d', floor($interval / 3600), floor($interval / 60) % 60, $interval % 60), 'processId' => $this->processId, 'progress' => 0.0, 'ready' => $this->isDone(), 'count' => empty($this->data['count']) ? false : $this->data['count'], 'memory' => sprintf('%0.2fMByte', $this->data['memory'] / 1048576), 'memory_avg' => sprintf('%0.2fMByte', $this->data['memory_avg'] / 1048576));
     $stage_count = 0;
     //count($this->data['current']);
     foreach ($this->data['current'] as $stage => $current) {
         if ($this->data['count'][$stage]) {
             if ($stage == self::STAGE_SKU) {
                 if ($this->data['drection'] == 'import') {
                     $response['progress'] += 100.0 * (1.0 * $current / $this->data['count'][$stage] - 1.0) / $this->data['count'][self::STAGE_PRODUCT];
                 }
             } else {
                 ++$stage_count;
                 $response['progress'] += 100.0 * (1.0 * $current / $this->data['count'][$stage]);
             }
         }
     }
     $response['progress'] = sprintf('%0.3f%%', $response['progress'] / max(1, $stage_count));
     $response['stage_count'] = $stage_count;
     $response['current_count'] = $this->data['current'];
     $response['processed_count'] = $this->data['processed_count'];
     $this->getResponse()->addHeader('Content-type', 'application/json');
     $this->getResponse()->sendHeaders();
     if ($this->writer) {
         $response['file'] = urlencode(basename($this->writer->file()));
     }
     if ($response['ready']) {
         $response['report'] = $this->report();
         if (!empty($this->data['emulate'])) {
             $callback = create_function('$a', 'return count($a)>1;');
             $emulate = array();
             foreach ($this->data['emulate'] as $row => $key) {
                 if (!isset($emulate[$key])) {
                     $emulate[$key] = array();
                 }
                 $emulate[$key][] = $row;
             }
             $params = array();
             if ($collision = array_filter($emulate, $callback)) {
                 $response['collision'] = array();
                 foreach ($collision as $key => $rows) {
                     $rows = array_map('intval', $rows);
                     asort($rows);
                     $response['collision'][] = array('key' => $key, 'rows' => $rows);
                     $params[$key] = $rows;
                 }
             } else {
                 $response['collision'] = true;
             }
             if (!empty($this->reader)) {
                 $response['rows_count'] = $this->reader->count();
                 shopCsvReader::snapshot($this->reader, $params);
                 unset($params);
             }
         }
     }
     echo $this->json($response);
 }