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#include "../internals.h"
/* `spl_candidates`: candidates to serial ports listing.
* `spl_last_successful_candidate`: last candidate which returned
* a valid iterator. */
typedef TIO_EXTERN_TYPE(int) (*spl_func)
OF((tio_iter_t **));
TIO_LOCAL_DATA(spl_func const * const) spl_candidates[] = {
#ifndef LIBTIO_DISABLED_WINDOWS
&tio_list_windows_serial_ports,
#endif
#ifndef LIBTIO_DISABLED_UNIX
&tio_list_unix_serial_ports_using_dev_serial,
&tio_list_unix_serial_ports_using_cu_devices,
#endif
NULL
};
TIO_LOCAL_DATA(spl_func const *) spl_last_successful_candidate = 0;
/* `tio_list_serial_ports()`: list the serial ports, in an agnostic way. */
TIO_EXTERN(int) tio_list_serial_ports(tio_iter_t **iterp)
{
int err;
if (spl_last_successful_candidate) {
err = (*spl_last_successful_candidate)(iterp);
if (err != tio_error_op)
return (err);
}
{
spl_func const * const *func;
for (func = spl_candidates; func; func++) {
err = (**func)(iterp);
if (err == tio_error_op)
continue ;
spl_last_successful_candidate = *func;
return (err);
}
}
return (tio_error_op);
}
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