You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
98 lines
3.6 KiB
98 lines
3.6 KiB
<?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/>.
|
|
|
|
/**
|
|
* XML format exporter class
|
|
*
|
|
* @package core_dtl
|
|
* @copyright 2008 Andrei Bautu
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
*/
|
|
|
|
defined('MOODLE_INTERNAL') || die();
|
|
|
|
/**
|
|
* XML format exporter class.
|
|
* Provides logic for writing XML tags and data inside appropriate callbacks.
|
|
* Subclasses should define XML data sinks.
|
|
*/
|
|
abstract class xml_database_exporter extends database_exporter {
|
|
/**
|
|
* Generic output method. Subclasses should implement it with code specific
|
|
* to the target XML sink.
|
|
*/
|
|
protected abstract function output($text);
|
|
|
|
/**
|
|
* Callback function. Outputs open XML PI and moodle_database opening tag.
|
|
*
|
|
* @param float $version the version of the system which generating the data
|
|
* @param string $release moodle release info
|
|
* @param string $timestamp the timestamp of the data (in ISO 8601) format.
|
|
* @param string $description a user description of the data.
|
|
* @return void
|
|
*/
|
|
public function begin_database_export($version, $release, $timestamp, $description) {
|
|
$this->output('<?xml version="1.0" encoding="utf-8"?>');
|
|
//TODO add xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" and schema information
|
|
$this->output('<moodle_database version="'.$version.'" release="'.$release.'" timestamp="'.$timestamp.'"'.(empty ($description) ? '' : ' comment="'.htmlspecialchars($description, ENT_QUOTES, 'UTF-8').'"').'>');
|
|
}
|
|
|
|
/**
|
|
* Callback function. Outputs table opening tag.
|
|
*
|
|
* @param xmldb_table $table - XMLDB object for the exported table
|
|
* @return void
|
|
*/
|
|
public function begin_table_export(xmldb_table $table) {
|
|
$this->output('<table name="'.$table->getName().'" schemaHash="'.$table->getHash().'">');
|
|
}
|
|
|
|
/**
|
|
* Callback function. Outputs table closing tag.
|
|
*
|
|
* @param xmldb_table $table - XMLDB object for the exported table
|
|
*/
|
|
public function finish_table_export(xmldb_table $table) {
|
|
$this->output('</table>');
|
|
}
|
|
|
|
/**
|
|
* Callback function. Outputs moodle_database closing tag.
|
|
*/
|
|
public function finish_database_export() {
|
|
$this->output('</moodle_database>');
|
|
}
|
|
|
|
/**
|
|
* Callback function. Outputs record tag with field subtags and data.
|
|
*
|
|
* @param xmldb_table $table - XMLDB object of the table from which data was retrieved
|
|
* @param object $data - data object (fields and values from record)
|
|
* @return void
|
|
*/
|
|
public function export_table_data(xmldb_table $table, $data) {
|
|
$this->output('<record>');
|
|
foreach ($data as $key => $value) {
|
|
if (is_null($value)) {
|
|
$this->output('<field name="'.$key.'" value="null" />');
|
|
} else {
|
|
$this->output('<field name="'.$key.'">'.htmlspecialchars($value, ENT_NOQUOTES, 'UTF-8').'</field>');
|
|
}
|
|
}
|
|
$this->output('</record>');
|
|
}
|
|
}
|
|
|