On 4/20/21 5:47 AM, Matt Wette wrote:
On 4/20/21 2:29 AM, Vladimir Zhbanov wrote:
Hi Guile users and devs,
I'm the current maintainer of Lepton EDA suite, an about five year
old fork of geda-gaf with accent to moving more functionality to
Scheme code. I'm not sure if it is acceptable to advertise it
here, please let me know if not. I just know several Guix
packagers are reading this mailing list and would like to announce
a new version of Lepton, 1.9.14 has been released on April, 7:
https://github.com/lepton-eda/lepton-eda/releases/tag/1.9.14-20210407
Sweet. Thanks for posting this. I will take a look at your problem.
It'll require digging into the eda_..._dirs function.
The following should work as a complete program on a system w/ glib.
You need to first convert the result to a bytevector and then access the
elements (pointers) one at a time. Note that we don't know how big the
array returned from the C function is. I pick an oversized value of 100.
(use-modules (system foreign))
(use-modules (rnrs bytevectors))
(define glib (dynamic-link "libglib-2.0"))
(define g-get-system-data-dirs
(let ((f (pointer->procedure
'* (dynamic-func "g_get_system_data_dirs" glib) (list)))
(bv-pointer-ref (cond
((= (sizeof '*) 8) bytevector-u64-native-ref )
((= (sizeof '*) 4) bytevector-u32-native-ref )
(else (error "hmmm"))))
(BIG 100))
(lambda ()
(let* ((r (f))
(p (pointer->bytevector r (* BIG (sizeof '*)))))
(let loop ((ix 0))
(let* ((ad (bv-pointer-ref p ix))
(sp (make-pointer ad)))
(if (equal? %null-pointer sp)
'()
(cons (pointer->string sp) (loop (+ ix (sizeof '*)))))))))))
(simple-format #t "~S" (g-get-system-data-dirs))
