On Fri, Jun 17, 2011 at 6:34 PM, Dave Mason <dmason@mason-rose.ca> 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