Meirza
6772c9b8e8
If enabled, the filter will convert text wrapped by language-* style class into a well-styled block of code. The filter uses PrismJS, and it also used by the TinyMCE editor to highlight the code sample plugin.
53 lines
1.7 KiB
PHP
53 lines
1.7 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Code highlighter filter.
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*
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* Filter converting text code into a well-styled block of code.
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*
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* @package filter_codehighlighter
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* @copyright 2023 Meirza <meirza.arson@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class filter_codehighlighter extends moodle_text_filter {
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/**
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* Apply the filter to the text
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*
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* @param string $text to be processed by the text
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* @param array $options filter options
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* @return string text after processing
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*/
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public function filter($text, array $options = []): string {
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global $PAGE;
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if (!isset($options['originalformat'])) {
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return $text;
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}
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// The pattern.
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$re = '/<pre.+?class=".*?language-.*?"><code>/i';
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// Stops looking after the first match.
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preg_match($re, $text, $matches);
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if ($matches) {
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$PAGE->requires->js_call_amd('filter_codehighlighter/prism-init');
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}
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return $text;
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}
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}
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