Passing C Struct to Ruby

[Mido Peace]

hey !!

I'm newbie in Ruby ,
Actually , I wanna call some C methods and Structure from Ruby , But
Still dont knw how to do


in C ...

int VALUE my_str_new(VALUE arg)
{
my_struct *str =init_Struct(arg) ;
return *str ;
}
...?!

I dont know how to tell Ruby about my C struct and its methods( or
create equivalent struct (keeping the C methods ) in Ruby)

Thx

 

[Roger Pack]

I dont know how to tell Ruby about my C struct and its methods( or
create equivalent struct (keeping the C methods ) in Ruby)

checkout ffi, ruby ffi swig generator, and

http://github.com/remogatto/ffi-inliner

either that or if you want to write a c extension google for "ruby c
extension"

-r

 

[Iñaki Baz Castillo]

El Martes, 19 de Enero de 2010, Mido Peace escribi=C3=B3:

in C ...
=20
int VALUE my_str_new(VALUE arg)
{
my_struct *str =3Dinit_Struct(arg) ;
return *str ;
}

This is wrong. Any Ruby C function must return a VALUE object. This is, a R=
uby=20
method cannot return a C integer or a C struct.

So you need to translate the above C struct into a Ruby hash, Ruby struct o=
r a=20
custom Ruby class instance.

But definitively I recommend you to look for Ruby C extensions tutorials.


=2D-=20
I=C3=B1aki Baz Castillo <[email protected]>