Lagarto

Lagarto is an all purpose fast and versatile event-based HTML parser. It can be used to modify or analyze some markup content, allowing to easily assemble custom complex transformations and code analysis tools.

Using Lagarto is very simple. Target HTML code is parsed and each HTML element is visited by user callback methods. For example, the following HTML snippet:

<html>
	<body>Hello</body>
</html>

would fire the following set of events:

start();	// parsing start
tag();		// for opening 'html' tag
text();		// for new line and spaces up to the next tag
tag();		// for opening 'body' tag
text();		// for text 'Hello'
tag();		// for closing 'body' tag
text();		// for new line and spaces up to the next tag
tag();		// for closing 'html' tag
end();		// parsing end

This makes Lagarto very, very fast; in fact it is one of the fastest parsers out there.

Lagarto is to HTML what ASM is to bytecode :)