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- Subject: Re: custom file system question
- From: Klaus Ripke <paul-lua@...>
- Date: Wed, 18 May 2005 13:40:50 +0200
On Wed, May 18, 2005 at 12:17:26PM +0100, Terisquas Brothers wrote:
> I'm trying to embed lua in a project where I can only
> have a single
> file resource, containing a custom compressed virtual
> file system.
> I'd like to get require, do_file, ... functions
> working on my file system,
> so that each time i.e. a require is called I can get
> it uncompressed
> and loaded using my FS (otherwise I'd have to expand
> my files into
> bigger files, which I'd prefer not)
sounds like a very nice application for a stdio replacement!
Linking a buffer to the uncompressor should be no problem.
> is there any standar/elegant way to do so or it's just
not, hmm, yet :)
> a matter of
> searching through the lua source and changing the
> opens or fopens to
it's fopens and there are not much of them.
> my custom open function, and so on?
if you can wait another 2-3 weeks,
we should have a reasonably working version.
(as some might have guessed, float printing is the problem,
but you probably use an integer based build?).
> Can be done from lua (for portability's
> sake) instead of modifying lua sources?
at least not all at once, and obviously not for main.
used by loadfile, dofile, require and for the main script,
has a fopen with no means to hook in.
The former, however, could be redefined to fetch scripts
from wherever you like.