static void get_option(void)
{
struct sr_dev_inst *sdi;
struct sr_channel_group *cg;
const struct sr_config_info *ci;
GSList *devices;
GVariant *gvar;
GHashTable *devargs;
int ret;
char *s;
struct sr_dev_driver *driver;
if (!(devices = device_scan())) {
g_critical("No devices found.");
return;
}
sdi = devices->data;
g_slist_free(devices);
driver = sr_dev_inst_driver_get(sdi);
if (sr_dev_open(sdi) != SR_OK) {
g_critical("Failed to open device.");
return;
}
cg = select_channel_group(sdi);
if (!(ci = sr_config_info_name_get(opt_get)))
g_critical("Unknown option '%s'", opt_get);
if ((devargs = parse_generic_arg(opt_config, FALSE)))
set_dev_options(sdi, devargs);
else devargs = NULL;
if ((ret = maybe_config_get(driver, sdi, cg, ci->key, &gvar)) != SR_OK)
g_critical("Failed to get '%s': %s", opt_get, sr_strerror(ret));
s = g_variant_print(gvar, FALSE);
printf("%s\n", s);
g_free(s);
g_variant_unref(gvar);
sr_dev_close(sdi);
if (devargs)
g_hash_table_destroy(devargs);
}
int opt_to_gvar(char *key, char *value, struct sr_config *src)
{
const struct sr_config_info *srci;
double tmp_double, dlow, dhigh;
uint64_t tmp_u64, p, q, low, high;
GVariant *rational[2], *range[2];
gboolean tmp_bool;
int ret;
if (!(srci = sr_config_info_name_get(key))) {
g_critical("Unknown device option '%s'.", (char *) key);
return -1;
}
src->key = srci->key;
if ((value == NULL) &&
(srci->datatype != SR_T_BOOL)) {
g_critical("Option '%s' needs a value.", (char *)key);
return -1;
}
ret = 0;
switch (srci->datatype) {
case SR_T_UINT64:
ret = sr_parse_sizestring(value, &tmp_u64);
if (ret != 0)
break;
src->data = g_variant_new_uint64(tmp_u64);
break;
case SR_T_INT32:
ret = sr_parse_sizestring(value, &tmp_u64);
if (ret != 0)
break;
src->data = g_variant_new_int32(tmp_u64);
break;
case SR_T_STRING:
src->data = g_variant_new_string(value);
break;
case SR_T_BOOL:
if (!value)
tmp_bool = TRUE;
else
tmp_bool = sr_parse_boolstring(value);
src->data = g_variant_new_boolean(tmp_bool);
break;
case SR_T_FLOAT:
tmp_double = strtof(value, NULL);
src->data = g_variant_new_double(tmp_double);
break;
case SR_T_RATIONAL_PERIOD:
if ((ret = sr_parse_period(value, &p, &q)) != SR_OK)
break;
rational[0] = g_variant_new_uint64(p);
rational[1] = g_variant_new_uint64(q);
src->data = g_variant_new_tuple(rational, 2);
break;
case SR_T_RATIONAL_VOLT:
if ((ret = sr_parse_voltage(value, &p, &q)) != SR_OK)
break;
rational[0] = g_variant_new_uint64(p);
rational[1] = g_variant_new_uint64(q);
src->data = g_variant_new_tuple(rational, 2);
break;
case SR_T_UINT64_RANGE:
if (sscanf(value, "%"PRIu64"-%"PRIu64, &low, &high) != 2) {
ret = -1;
break;
} else {
range[0] = g_variant_new_uint64(low);
range[1] = g_variant_new_uint64(high);
src->data = g_variant_new_tuple(range, 2);
}
break;
case SR_T_DOUBLE_RANGE:
if (sscanf(value, "%lf-%lf", &dlow, &dhigh) != 2) {
ret = -1;
break;
} else {
range[0] = g_variant_new_double(dlow);
range[1] = g_variant_new_double(dhigh);
src->data = g_variant_new_tuple(range, 2);
}
break;
default:
ret = -1;
}
return ret;
}
