Current File : /home/vacivi36/ava/question/classes/local/bank/context_to_string_translator.php
<?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/>.
namespace core_question\local\bank;
/**
* Converts contextlevels to strings and back to help with reading/writing contexts to/from import/export files.
*
* @package core_question
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @author 2021 Safat Shahin <safatshahin@catalyst-au.net>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class context_to_string_translator {
/**
* @var array used to translate between contextids and strings for this context.
*/
protected $contexttostringarray = [];
/**
* context_to_string_translator constructor.
*
* @param \context[] $contexts
*/
public function __construct($contexts) {
$this->generate_context_to_string_array($contexts);
}
/**
* Context to string.
*
* @param int $contextid
* @return mixed
*/
public function context_to_string($contextid) {
return $this->contexttostringarray[$contextid];
}
/**
* String to context.
*
* @param string $contextname
* @return false|int|string
*/
public function string_to_context($contextname) {
return array_search($contextname, $this->contexttostringarray);
}
/**
* Generate context to array.
*
* @param \context[] $contexts
*/
protected function generate_context_to_string_array($contexts) {
if (!$this->contexttostringarray) {
$catno = 1;
/** @var \context $context */
foreach ($contexts as $context) {
switch ($context->contextlevel) {
case CONTEXT_MODULE :
$contextstring = 'module';
break;
case CONTEXT_COURSE :
$contextstring = 'course';
break;
case CONTEXT_COURSECAT :
$contextstring = "cat$catno";
$catno++;
break;
case CONTEXT_SYSTEM :
$contextstring = 'system';
break;
default:
throw new \coding_exception('Unexpected context level ' .
\context_helper::get_level_name($context->contextlevel) . ' for context ' .
$context->id . ' in generate_context_to_string_array. ' .
'Questions can never exist in this type of context.');
}
$this->contexttostringarray[$context->id] = $contextstring;
}
}
}
}
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