[Summary view]

Differences Between: [Versions 310 and 400] [Versions 310 and 401] [Versions 310 and 402] [Versions 310 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * JSON data format writer
  19   *
  20   * @package    dataformat_json
  21   * @copyright  2016 Brendan Heywood (brendan@catalyst-au.net)
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  namespace dataformat_json;
  26  
  27  defined('MOODLE_INTERNAL') || die();
  28  
  29  /**
  30   * JSON data format writer
  31   *
  32   * @package    dataformat_json
  33   * @copyright  2016 Brendan Heywood (brendan@catalyst-au.net)
  34   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  35   */
  36  class writer extends \core\dataformat\base {
  37  
  38      /** @var $mimetype */
  39      public $mimetype = "application/json";
  40  
  41      /** @var $extension */
  42      public $extension = ".json";
  43  
  44      /** @var $sheetstarted */
  45      public $sheetstarted = false;
  46  
  47      /** @var $sheetdatadded */
  48      public $sheetdatadded = false;
  49  
  50      /**
  51       * Write the start of the file.
  52       */
  53      public function start_output() {
  54          echo "[";
  55      }
  56  
  57      /**
  58       * Write the start of the sheet we will be adding data to.
  59       *
  60       * @param array $columns
  61       */
  62      public function start_sheet($columns) {
  63          if ($this->sheetstarted) {
  64              echo ",";
  65          } else {
  66              $this->sheetstarted = true;
  67          }
  68          $this->sheetdatadded = false;
  69          echo "[";
  70      }
  71  
  72      /**
  73       * Write a single record
  74       *
  75       * @param array $record
  76       * @param int $rownum
  77       */
  78      public function write_record($record, $rownum) {
  79          if ($this->sheetdatadded) {
  80              echo ",";
  81          }
  82  
  83          echo json_encode($this->format_record($record), JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
  84  
  85          $this->sheetdatadded = true;
  86      }
  87  
  88      /**
  89       * Write the end of the sheet containing the data.
  90       *
  91       * @param array $columns
  92       */
  93      public function close_sheet($columns) {
  94          echo "]";
  95      }
  96  
  97      /**
  98       * Write the end of the file.
  99       */
 100      public function close_output() {
 101          echo "]";
 102      }
 103  }