String To C char** Swift 3

Question

I am trying to call a C function in swift

int getValueFromC(char ** aValue);

In swift I see the "Type" is

UnsafeMutablePointer<UnsafeMutablePointer<Int8>?>

So i would call the function i swift using:

getValueFrom(myStringPointerPointer)

where myStringPointerPointer value would be at least initialised

Do you want to pass Swift strings to the C function, or get strings back from the C function? — Martin R, Nov 09 '17 at 13:35
A swift variable that will "End up" used as String because the c function will override it. — Reimond Hill, Nov 09 '17 at 13:50
Note that you must take care of who is responsible for allocating and releasing the string storage. — Martin R, Nov 09 '17 at 13:55

score 1 · Accepted Answer · answered Nov 16 '17 at 09:11

1

var aVar:UnsafeMutablePointer<CChar>? = nil
let aIntVar = getValueFromC(&aVar)

answered Nov 16 '17 at 09:11

Reimond Hill

1 Answers1