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<?php
/**
* @copyright Copyright (c) 2014 Carsten Brandt
* @license https://github.com/cebe/markdown/blob/master/LICENSE
* @link https://github.com/cebe/markdown#readme
*/
namespace cebe\markdown\inline;
// work around https://github.com/facebook/hhvm/issues/1120
defined('ENT_HTML401') || define('ENT_HTML401', 0);
/**
* Adds auto linking for URLs
*/
trait UrlLinkTrait
{
/**
* Parses urls and adds auto linking feature.
* @marker http
* @marker ftp
*/
protected function parseUrl($markdown)
{
$pattern = <<<REGEXP
/(?(R) # in case of recursion match parentheses
\(((?>[^\s()]+)|(?R))*\)
| # else match a link with title
^(https?|ftp):\/\/(([^\s<>()]+)|(?R))+(?<![\.,:;\'"!\?\s])
)/x
REGEXP;
if (!in_array('parseLink', $this->context) && preg_match($pattern, $markdown, $matches)) {
return [
['autoUrl', $matches[0]],
strlen($matches[0])
];
}
return [['text', substr($markdown, 0, 4)], 4];
}
protected function renderAutoUrl($block)
{
$href = htmlspecialchars($block[1], ENT_COMPAT | ENT_HTML401, 'UTF-8');
$decodedUrl = urldecode($block[1]);
$secureUrlText = preg_match('//u', $decodedUrl) ? $decodedUrl : $block[1];
$text = htmlspecialchars($secureUrlText, ENT_NOQUOTES | ENT_SUBSTITUTE, 'UTF-8');
return "<a href=\"$href\">$text</a>";
}
}