Text::convertHtmlToBbCode

static function convertHtmlToBbCode($html)
{
	if (!is_string($html))
	{
		return $html;
	}

	$html = str_replace(' ', ' ', $html);
	$html = str_replace('
', '------[BR]', $html);
	$html = str_replace('#BR#', '[BR]', $html);

	$replaced = 0;
	do
	{
		$html = preg_replace(
			"/<([busi])[^>a-z]*>(.+?)<\/(\1)[^>a-z]*>/is".BX_UTF_PCRE_MODIFIER,
			"[\1]\2[/\1]",
			$html, -1, $replaced
		);
	}
	while($replaced > 0);

	$html = preg_replace("/\/is".BX_UTF_PCRE_MODIFIER,"[br]", $html);
	$html = preg_replace(
		[
			"#]+href\s*=\s*('|")(.+?)(?:\1)[^>]*>(.*?)]*>#is".BX_UTF_PCRE_MODIFIER,
			"#]+href(\s*=\s*)([^'">]+)>(.*?)]*>#is".BX_UTF_PCRE_MODIFIER
		],
		"[url=\2]\3[/url]", $html
	);
	$html = preg_replace(
		["/]+colors*=[s'"]*#([0-9a-f]{3}|[0-9a-f]{6})[s'"]*>(.+?)]*>/i".BX_UTF_PCRE_MODIFIER],
		["[color=#\1]\2[/color]"],
		$html
	);
	$html = preg_replace(
		["/]+colors*=[s'"]*#([0-9a-f]{3}|[0-9a-f]{6})[s'"]*>(.+?)]*>/i".BX_UTF_PCRE_MODIFIER],
		["[color=#\1]\2[/color]"],
		$html
	);
	$html = preg_replace(
		["/]+sizes*=[s'"]*(d+)[s'"]*>(.+?)]*>/i".BX_UTF_PCRE_MODIFIER],
		["[size=\1]\2[/size]"],
		$html
	);

	$replaced = 0;
	do
	{
		$html = preg_replace(
			"/(.*?)