-/**
- * Parse a trigger specification string.
- *
- * @param sdi The device instance for which the trigger specification is
- * intended. Must not be NULL. Also, sdi->driver and
- * sdi->driver->info_get must not be NULL.
- * @param triggerstring The string containing the trigger specification for
- * one or more probes of this device. Entries for multiple probes are
- * comma-separated. Triggers are specified in the form key=value,
- * where the key is a probe number (or probe name) and the value is
- * the requested trigger type. Valid trigger types currently
- * include 'r' (rising edge), 'f' (falling edge), 'c' (any pin value
- * change), '0' (low value), or '1' (high value).
- * Example: "1=r,sck=f,miso=0,7=c"
- *
- * @return Pointer to a list of trigger types (strings), or NULL upon errors.
- * The pointer list (if non-NULL) has as many entries as the
- * respective device has probes (all physically available probes,
- * not just enabled ones). Entries of the list which don't have
- * a trigger value set in 'triggerstring' are NULL, the other entries
- * contain the respective trigger type which is requested for the
- * respective probe (e.g. "r", "c", and so on).
- */
-SR_API char **sr_parse_triggerstring(const struct sr_dev_inst *sdi,
- const char *triggerstring)
-{
- GSList *l;
- GVariant *gvar;
- struct sr_probe *probe;
- int max_probes, probenum, i;
- char **tokens, **triggerlist, *trigger, *tc;
- const char *trigger_types;
- gboolean error;
-
- max_probes = g_slist_length(sdi->probes);
- error = FALSE;
-
- if (!(triggerlist = g_try_malloc0(max_probes * sizeof(char *)))) {
- sr_err("%s: triggerlist malloc failed", __func__);
- return NULL;
- }
-
- if (sdi->driver->config_list(SR_CONF_TRIGGER_TYPE,
- &gvar, sdi, NULL) != SR_OK) {
- sr_err("%s: Device doesn't support any triggers.", __func__);
- return NULL;
- }
- trigger_types = g_variant_get_string(gvar, NULL);
-
- tokens = g_strsplit(triggerstring, ",", max_probes);
- for (i = 0; tokens[i]; i++) {
- probenum = -1;
- for (l = sdi->probes; l; l = l->next) {
- probe = (struct sr_probe *)l->data;
- if (probe->enabled
- && !strncmp(probe->name, tokens[i],
- strlen(probe->name))) {
- probenum = probe->index;
- break;
- }
- }
-
- if (probenum < 0 || probenum >= max_probes) {
- sr_err("Invalid probe.");
- error = TRUE;
- break;
- }
-
- if ((trigger = strchr(tokens[i], '='))) {
- for (tc = ++trigger; *tc; tc++) {
- if (strchr(trigger_types, *tc) == NULL) {
- sr_err("Unsupported trigger "
- "type '%c'.", *tc);
- error = TRUE;
- break;
- }
- }
- if (!error)
- triggerlist[probenum] = g_strdup(trigger);
- }
- }
- g_strfreev(tokens);
- g_variant_unref(gvar);
-
- if (error) {
- for (i = 0; i < max_probes; i++)
- g_free(triggerlist[i]);
- g_free(triggerlist);
- triggerlist = NULL;
- }
-
- return triggerlist;
-}
-