Function port_read_generic

src/iofunc.c:609–657

On MinGW32/MSVC/.. the appropriate accessor must be used * depending on the port type, sigh. */

 * depending on the port type, sigh.
 */
static ssize_t port_read_generic(hamlib_port_t *p, void *buf, size_t count,
                                 int direct)
{
    int fd = p->fd;
    int i;
    ssize_t bytes_read;

    if (!direct)
    {
        return port_read_sync_data_pipe(p, buf, count);
    }

    /*
     * Since WIN32 does its special serial read, we have
     * to catch the microHam case to do just "read".
     * Note that we always have RIG_PORT_SERIAL in the
     * microHam case.
     */
    if (is_uh_radio_fd(fd))
    {
        return read(fd, buf, count);
    }

    if (p->type.rig == RIG_PORT_SERIAL)
    {
        bytes_read = win32_serial_read(fd, buf, (int) count);

        if (p->parm.serial.data_bits == 7)
        {
            unsigned char *pbuf = buf;

            /* clear MSB */
            for (i = 0; i < bytes_read; i++)
            {
                pbuf[i] &= ~0x80;
            }
        }

        return bytes_read;
    }
    else if (p->type.rig == RIG_PORT_NETWORK || p->type.rig == RIG_PORT_UDP_NETWORK)
    {
        return recv(fd, buf, count, 0);
    }
    else
    {
        return read(fd, buf, count);
    }
}

static ssize_t port_write(hamlib_port_t *p, const void *buf, size_t count)
{