From: David Balmain <dbalmain.ml@...>
Date: 2006-09-23T15:11:32+09:00
Subject: Re: Creating a reference to a ruby variable in a C extension

On 9/23/06, Christer Sandberg <chrsan@gmail.com> wrote:
> Vincent Fourmond wrote:
> > Hello !
> >
> >> The issue with self not being available was that I was calling yyparse()
> >> and hadn't configured bison so that yyparse was given any parameters,
> >> hence self wasn't available in the parser code. I didn't destroy it just
> >> couldn't reach it. Now I have taken a different aproach. yyparse is
> >> called with a parameter and instead of passing the callback instance as
> >> a parameter to initialize I have made it a class/module method instead,
> >> since the only task for my extension is to delegate the parsing routine.
> >
> >   Yes, bison and flex always give great fun. Just out of curiosity, what
> > are you parsing ?
> >
> >> Thanks again, though, for opening my eyes. There's been a long time
> >> since I wrote some C code and I didn't think about this.
> >
> >   I did bump into this not so long ago... I'd rather you didn't ;-) !
> >
> >       Vince
>
> Hi again, Vince!
>
> Maybe I'm well deep over my head here, but my goal is to
> modify/customize the CSS parser/lexer used by KDE and Apple (in Safari)
> and wrap it up as a Ruby extension. My first thing on the TODO list is
> making an implementation of the SAC API, and then move on to make a DOM
> implementation built upon the SAC API. My extension is calling back to a
> document handler SAC implementation which I will make as a module to be
> able to override only the methods interesting if one might want to make
> a customized handling or implementation.
>
> Actually, this idea came to my mind when thinking about doing a Ruby
> Markdown to PDF conversion utility. Then I thought that one should be
> able to customize the fonts, colors etc, and since Markdown converts to
> XHTML and CSS can be used to style that... Well, you get the point.
>
> Cheers,
> Christer
>

Hey Christer,

This sounds like an interesting project. Is it going to be open
source? I could definitely use something like this.

cheers,
Dave