CTextParser::convert_anchor_tag

public function convert_anchor_tag($url, $text)
{
	$url = trim(str_replace(['[nomodify]', '[/nomodify]'], '', $url));
	$text = trim(str_replace(['[nomodify]', '[/nomodify]'], '', $text));
	$text = ($text == '' ? $url : $text);

	$bTextUrl = ($text == $url);
	$bShortUrl = (($this->allow['SHORT_ANCHOR'] ?? '') == 'Y');

	$text = str_replace("\"", """, $text);
	$postfix = "";
	$pattern = "/([.,?!;]|!)$/" . BX_UTF_PCRE_MODIFIER;
	if ($bTextUrl && preg_match($pattern, $url, $match))
	{
		$postfix = $match[1];
		$url = preg_replace($pattern, '', $url);
		$text = preg_replace($pattern, '', $text);
	}

	$url = preg_replace(
		[
			"/&/" . BX_UTF_PCRE_MODIFIER,
			"/javascript:/i" . BX_UTF_PCRE_MODIFIER,
			"/[" . chr(12) . "']/" . BX_UTF_PCRE_MODIFIER,
			"/[/" . BX_UTF_PCRE_MODIFIER,
			"/]/" . BX_UTF_PCRE_MODIFIER,
		],
		[
			"&",
			"java script: ",
			"%27",
			"[",
			"]",
		],
		$url
	);

	if (mb_substr($url, 0, 1) != '/' && !preg_match("/^(" . $this->getAnchorSchemes() . "):/i" . BX_UTF_PCRE_MODIFIER, $url))
	{
		$url = 'http://' . $url;
	}
	$text = preg_replace(
		["/&/i" . BX_UTF_PCRE_MODIFIER, "/javascript:/i" . BX_UTF_PCRE_MODIFIER],
		["&", "javascript: "],
		$text
	);

	if ($bShortUrl &&
		mb_strlen($text) > $this->maxAnchorLength &&
		preg_match("/^(" . $this->getAnchorSchemes() . "):\/\/(\S+)$/i" . BX_UTF_PCRE_MODIFIER, $text, $matches))
	{
		$uri_type = $matches[1];
		$stripped = $matches[2];
		$text = $uri_type . '://' . (mb_strlen($stripped) > $this->maxAnchorLength ?
			mb_substr($stripped, 0, $this->maxAnchorLength - 10) . '...' . mb_substr($stripped, -10) :
			$stripped
		);
	}

	if ($this->anchorType === 'bbcode')
	{
		if ($url === $text)
		{
			$link = '[URL]' . $url . '[/URL]';
		}
		else
		{
			$link = '[URL=' . $url . ']' . $text . '[/URL]';
		}
	}
	else
	{
		$url = $this->defended_tags(htmlspecialcharsbx($url, ENT_COMPAT, false));

		if (strpos($text, "<17") === false)
		{
			// it could be "defended" tag inside URL code
			$text = htmlspecialcharsbx($text, ENT_COMPAT, false);
		}

		$noFollowAttribute = $this->parser_nofollow == 'Y'? ' rel="nofollow"': '';

		$link = '' . $text . '';

		if ($noFollowAttribute)
		{
			$link = '' . $link . '';
		}
	}

	return $link . $postfix;
}