Application needed to find line breaks in a div

Hi,

I am looking for someone who can write me an application that can find
where the line breaks occur in a div(from an html page) - it needn't
have a gui as it will be more of a batch process.

This must account for the text being in different styles and sizes.

I am hoping this can be done by someone with knowledge of the mozilla
font rendering engine or any other means that will acheive the result.

Ideally I would like the application to read the div heght, div width,
text string, font size and font style from a database and return a new
text string with line breaks defined.

Any help or other places I could post this request would be much
appreciated.

Regards
Norm Archibald.