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<?php # -*- coding: utf-8 -*-
declare(strict_types=1);
namespace Bueltge\Marksimple\Rule;
class Image extends AbstractRegexRule
{
/**
* Get the regex rule to identify the content for the callback.
* Parse image with optional alt string, like 
*
* @return string
*/
public function rule(): string
// (?!`) for don't match with ` on end of line for code lines.
return '#!\[[^\]]*\]\((.*?)(?=\"|\))(\".*\")?\)(?!`)#';
}
* {@inheritdoc}
public function render(array $content): string
$url = filter_var($content[1], FILTER_SANITIZE_URL);
$alt = '';
if (isset($content[2])) {
$content[2] = str_replace('"', '', $content[2]);
$alt = ' alt="' . filter_var($content[2], FILTER_SANITIZE_STRING) . '"';
return sprintf('<img src="%s"%s />', $url, $alt);
bueltge /
marksimple
