Function pn_string_vaddf

c/src/core/object/string.c:233–254

}

int pn_string_vaddf(pn_string_t *string, const char *format, va_list ap)
{
  va_list copy;

  if (string->size == PNI_NULL_SIZE) {
    return PN_ERR;
  }

  while (true) {
    va_copy(copy, ap);
    int err = vsnprintf(string->bytes + string->size, string->capacity - string->size, format, copy);
    va_end(copy);
    if (err < 0) {
      return err;
    } else if ((size_t) err >= string->capacity - string->size) {
      pn_string_grow(string, string->size + err);
    } else {
      string->size += err;
      return 0;
    }
  }
}

char *pn_string_buffer(pn_string_t *string)
{