Re: [Chicken-users] some progress on zlib

[Felix]

Peter Keller wrote:
> After figuring out I could pass a byte-vector into a foreign-lambda
> declaration where something expects a void* that is treated as a char*,
> my zlib FFI has come into reality.
>
> Here's an example:
> -----------------------------
> (declare (uses zlib))
> (require 'srfi-4)
> (require 'lolevel)
>
> ;; test.gz contains "Hello World" as compressed by gzip
> (let (  (fin (gzopen "test.gz" "r"))
>         (data (make-byte-vector 1024 0)))
>
>     (gzread fin data 12)
>     (print "Read: " (byte-vector->string data))
>     (gzclose fin))
>     
> ;; Wow, actually printed Hello World!
> -----------------------------

Hey, that's nice. I did some minor Zlib stuff with
Chicken, but having a port-like interface is even better.
You should try out `make-input-port'/`make-output-port'
(unit `extras', I think)

> I figure in a week or so(or in a single night, depending on time and
> motivation), I'll have enough of the API to do very, very basic file i/o
> where you can read or write compressed files. When I get to that point,
> I'll package it up nice and release it since it can be useful right away
> to someone.

Wonderful! How about a proper extensions (i.e. "egg") ?

Thanks for your help.


cheers,
felix