Is there any C++ syntax highlighter that outputs data suitable for pasting into a HTML document?

Anyone know of some tool that given a .cpp or .h file outputs data suitable for pasting into a HTML document?

What I want is something like this:

Input:

//My class
class A
{
};

Output:

<span class="cplusplus-comment">//My class</span>
<span class="cplusplus-keyword">class</span> A
{
};

By having spans marking up the keywords, comments and other parts of the code, it's all about adding some CSS code to the stylesheet to have the c++ code highlighted.