Obtain a pointer to a C char array in Swift

Question

A have a structure like this (defined in bson.h of mongodb c driver):

typedef struct
{
  uint32_t domain;
  uint32_t code;
  char message[504];
} bson_error_         


        

Answer 1

Here my suggestion (similar to rintaro's approach, perhaps slightly simpler):

var err: UnsafeMutablePointer = ...

var msg = err.memory.message
let msgString = withUnsafePointer(&msg) { String.fromCString(UnsafePointer($0)) }
println(msgString)