Re: Get char** global variable

Hi again,

On Thu, Sep 03, 2020 at 04:25:10PM +0200, Ervin Hegedüs wrote:
> I have a global variable with list of C strings:
> 
> char ** custom_variables;
> 
> I'ld like to access to this var, so I followed the documentation:
> 
> http://www.swig.org/Doc4.0/Python.html#Python_nn59
> 
...


okay, looks like I found the right way:

%typemap(varout) char ** {
  int len,i;
  len = 0;
  if ($1) {
    while ($1[len]) len++;
  }
  printf("output: %p\n", $1);
  printf("len: %d\n", len);
  $result = PyList_New(len);
  for (i = 0; i < len; i++) {
    PyList_SetItem($result,i,PyUnicode_FromString($1[i]));
  }
}

Just for the record:

* the "out" typemap isn't good here, the "varout" is the correct
* $input isn't available here, $1 is the "input"
* $result is the product in Python

Now I get what I expect:

print(mytest.cvar.custom_variables)

["FooBar", "BarFoo"]


Thanks.


a.



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