On Fri, Jun 17, 2011 at 6:34 PM, Dave Mason <[email protected]> wrote:
> I'm working on making a clean interface layer on top of FFI (and possibly
> Alien and NativeBoost).
>
> It will look something like:
>
> FFIParse createFFI: #System category: 'My-Category' library:
> 'System'.
> System parseSystemHeader: 'sys/resource.h'.
> rusage := System struct: #rusage.
> System getrusage: 0 with: rusage.
> Transcript show: 'Used ';
> show: rusage ru_utime tv_sec;
> show: '.';
> show: rusage ru_utime tv_usec;
> show: ' seconds of user CPU time';
> cr.
> System parseSystemHeaer: 'unistd.h';
> sleep: 5.
> pid := System getpid
>
> I have a very compact, almost compete C header parser
Hi Dave. Talk to Javier Pimas and Nick Papoylias. They were both trying to
do such parser I think.
> but I need to be able to get the output from
> popen("echo \"#include <unistd.h>\"|gcc -E -","r")
> or equivalent. The popen is easy enough to get at through FFI, but is
> there a way to connect either the FILE* or the file descriptor up to some
> ReadStream. In the worst case, I could probably use FFI to call fread(3)
> but is there a better way?
>
> I'd also appreciate any simple examples of using FFI, especially with
> ExternalStructure subclasses.
>
>
Sorry I cannot help. We did the OpenDBX wrapper with FFI, but we needed only
one ExternalStructure. Anyway, if you want to take a look, load the packages
OpenDBXDriverPharo-Dialect and OpenDBXDriverSmalltalk-Dialect from '
http://www.squeaksource.com/DBXTalk' and browse methods of PharoOpenDBX
subclasses.
> Finally is there a way to get external variables such as 'extern int
> errno;' ?
>
> Thanks in advance!
>
> ../Dave
>
>
--
Mariano
http://marianopeck.wordpress.com
