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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* JSON data format writer
*
* @package dataformat_json
* @copyright 2016 Brendan Heywood (brendan@catalyst-au.net)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace dataformat_json;
defined('MOODLE_INTERNAL') || die();
/**
* JSON data format writer
*
* @package dataformat_json
* @copyright 2016 Brendan Heywood (brendan@catalyst-au.net)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class writer extends \core\dataformat\base {
/** @var $mimetype */
public $mimetype = "application/json";
/** @var $extension */
public $extension = ".json";
/** @var $sheetstarted */
public $sheetstarted = false;
/** @var $sheetdatadded */
public $sheetdatadded = false;
/**
* Write the start of the file.
*/
public function start_output() {
echo "[";
}
/**
* Write the start of the sheet we will be adding data to.
*
* @param array $columns
*/
public function start_sheet($columns) {
if ($this->sheetstarted) {
echo ",";
} else {
$this->sheetstarted = true;
}
$this->sheetdatadded = false;
echo "[";
}
/**
* Write a single record
*
* @param array $record
* @param int $rownum
*/
public function write_record($record, $rownum) {
if ($this->sheetdatadded) {
echo ",";
}
echo json_encode($this->format_record($record), JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
$this->sheetdatadded = true;
}
/**
* Write the end of the sheet containing the data.
*
* @param array $columns
*/
public function close_sheet($columns) {
echo "]";
}
/**
* Write the end of the file.
*/
public function close_output() {
echo "]";
}
}