HTTP header library

[jpf91]

I have some (old) code to parse and format http headers. It uses the ragel (http://www.complang.org/ragel/) parser generator to generate the parsers.

I originally wanted to post this for inclusion into phobos, however Andrei made it pretty clear that he doesn't want code in phobos which depends on external tools. So I currently have no real use for this code, if it's useful for vibe.d I'd be happy to contribute it.

Source code:
https://gist.github.com/2516504#file_http.rl.d

Compilable source code (generated by ragel, compile with deprecated code enabled)
https://gist.github.com/2516504#file_http.d

Documentation:
http://dl.dropbox.com/u/24218791/d/src/http.html
(the interesting part is canParseHeader, isHeader, canFormatHeader, formatHeader, formatHeaderValue, parseHeader, parseHeaderValue)

Some refactoring is probably necessary, but I first want to know if there's some interest in this code.

[s-ludwig]

Looks useful, I will talk to the others to see whats their take on it and how this could be integrated best into the API.