NAME¶

SYNOPSIS¶

bool
bson_steal (bson_t *dst,
            bson_t *src);

PARAMETERS¶

dst

An uninitialized bson_t

src

A bson_t

DESCRIPTION¶

Before calling this function, src must be initialized and dst must be uninitialized. After this function returns successfully, src is destroyed, and dst is initialized and must be freed with bson_destroy

For example, if you have a higher‐level structure that wraps a bson_t , use bson_steal to transfer BSON data into it:

typedef struct {
   bson_t bson;
} bson_wrapper_t;
bson_wrapper_t *
wrap_bson (bson_t *b)
{
   bson_wrapper_t *wrapper = bson_malloc (sizeof (bson_wrapper_t));
   if (bson_steal (&wrapper‐>bson, b)) {
      return wrapper;
   }
   bson_free (wrapper);
   return NULL;
}
void
bson_wrapper_destroy (bson_wrapper_t *wrapper)
{
   bson_destroy (&wrapper‐>bson);
   bson_free (wrapper);
}
int
main (int   argc,
      char *argv[])
{
   bson_t bson = BSON_INITIALIZER;
   bson_wrapper_t *wrapper;
   BSON_APPEND_UTF8 (&bson, "key", "value");
   /* now "bson" is destroyed */
   wrapper = wrap_bson (&bson);
   /* clean up */
   bson_wrapper_destroy (wrapper);
}

See also bson_destroy_with_steal , a lower‐level function that returns the raw contents of a bson_t

RETURNS¶

COLOPHON¶