Parsing bb code

Hello all,

I was wondering how I can use php to parse lists like in the example below where the [*] isn't closed.


[list]
[*]
[*]
[/list]

 

There are hundreds of frameworks for this...

http://www.google.co.uk/search?hl=e...esnum=0&ct=result&cd=1&q=parse+bbcode&spell=1

 

Yea but I can't really find a simple source for this code or something that explains how it actually works. Would like to learn from it .

 

This is how vBulletin parses it...

Im not sure what you will make of it...

/**
	* Handles a [list] tag. Makes a bulleted or ordered list.
	*
	* @param	string	The body of the list.
	* @param	string	If tag has option, the type of list (ordered, etc).
	*
	* @return	string	HTML representation of the tag.
	*/
	function handle_bbcode_list($text, $type = '')
	{
		if ($type)
		{
			switch ($type)
			{
				case 'A':
					$listtype = 'upper-alpha';
					break;
				case 'a':
					$listtype = 'lower-alpha';
					break;
				case 'I':
					$listtype = 'upper-roman';
					break;
				case 'i':
					$listtype = 'lower-roman';
					break;
				case '1': //break missing intentionally
				default:
					$listtype = 'decimal';
					break;
			}
		}
		else
		{
			$listtype = '';
		}

		// emulates ltrim after nl2br
		$text = preg_replace('#^(\s|<br>|<br />)+#si', '', $text);

		$bullets = preg_split('#\s*\[\*\]#s', $text, -1, PREG_SPLIT_NO_EMPTY);
		if (empty($bullets))
		{
			return "\n\n";
		}

		$output = '';
		foreach ($bullets AS $bullet)
		{
			$output .= $this->handle_bbcode_list_element($bullet);
		}

		if ($listtype)
		{
			return '<ol style="list-style-type: ' . $listtype . '">' . $output . '</ol>';
		}
		else
		{
			return "<ul>$output</ul>";
		}
	}

PHP: