From e950559979908f828a903ede8a50bde091566eed Mon Sep 17 00:00:00 2001
From: Bert Vermeulen <bert@biot.com>
Date: Sun, 23 Aug 2015 23:21:14 +0200
Subject: [PATCH] Support SR_T_MQLIST.

---
 session.c | 39 +++++++++++++++++++++++++++++++++++----
 show.c    | 53 ++++++++++++++++++++++++++++++++++++++++++++++++-----
 2 files changed, 83 insertions(+), 9 deletions(-)

diff --git a/session.c b/session.c
index b36072c..6e10178 100644
--- a/session.c
+++ b/session.c
@@ -354,14 +354,15 @@ void datafeed_in(const struct sr_dev_inst *sdi,
 
 int opt_to_gvar(char *key, char *value, struct sr_config *src)
 {
-	const struct sr_key_info *srci;
+	const struct sr_key_info *srci, *srmqi;
 	double tmp_double, dlow, dhigh;
-	uint64_t tmp_u64, p, q, low, high;
-	GVariant *rational[2], *range[2];
+	uint64_t tmp_u64, p, q, low, high, mqflags;
+	uint32_t mq;
+	GVariant *rational[2], *range[2], *gvar, *gtup[2];
 	GVariantBuilder *vbl;
 	gboolean tmp_bool;
 	gchar **keyval;
-	int ret;
+	int ret, i;
 
 	if (!(srci = sr_key_info_name_get(SR_KEY_CONFIG, key))) {
 		g_critical("Unknown device option '%s'.", (char *) key);
@@ -452,6 +453,36 @@ int opt_to_gvar(char *key, char *value, struct sr_config *src)
 			g_strfreev(keyval);
 		}
 		break;
+	case SR_T_MQLIST:
+		/*
+		  Argument is MQ id e.g. ("voltage") optionally followed by one
+		  or more /<mqflag> e.g. "/ac".
+		 */
+		keyval = g_strsplit(value, "/", 0);
+		if (!keyval[0] || !(srmqi = sr_key_info_name_get(SR_KEY_MQ, keyval[0]))) {
+			g_strfreev(keyval);
+			ret = -1;
+			break;
+		}
+		mq = srmqi->key;
+		mqflags = 0;
+		for (i = 1; keyval[i]; i++) {
+			if (!(srmqi = sr_key_info_name_get(SR_KEY_MQFLAGS, keyval[i]))) {
+				ret = -1;
+				break;
+			}
+			mqflags |= srmqi->key;
+		}
+		g_strfreev(keyval);
+		if (ret != -1) {
+			vbl = g_variant_builder_new(G_VARIANT_TYPE_ARRAY);
+			gtup[0] = g_variant_new_uint32(mq);
+			gtup[1] = g_variant_new_uint64(mqflags);
+			gvar = g_variant_new_tuple(gtup, 2);
+			g_variant_builder_add_value(vbl, gvar);
+			src->data = g_variant_builder_end(vbl);
+		}
+		break;
 	default:
 		g_critical("Unknown data type specified for option '%s' "
 			   "(driver implementation bug?).", key);
diff --git a/show.c b/show.c
index e81110a..957560f 100644
--- a/show.c
+++ b/show.c
@@ -263,19 +263,20 @@ void show_dev_detail(void)
 {
 	struct sr_dev_driver *driver_from_opt, *driver;
 	struct sr_dev_inst *sdi;
-	const struct sr_config_info *srci;
+	const struct sr_key_info *srci, *srmqi, *srmqfi;
 	struct sr_channel *ch;
 	struct sr_channel_group *channel_group, *cg;
 	GSList *devices, *cgl, *chl, *channel_groups;
-	GVariant *gvar_opts, *gvar_dict, *gvar_list, *gvar;
+	GVariant *gvar_opts, *gvar_dict, *gvar_list, *gvar, *element;
 	gsize num_opts, num_elements;
 	double dlow, dhigh, dcur_low, dcur_high;
 	const uint64_t *uint64, p, q, low, high;
-	uint64_t tmp_uint64, cur_low, cur_high, cur_p, cur_q;
+	uint64_t tmp_uint64, mask, cur_low, cur_high, cur_p, cur_q;
 	const uint32_t *opts;
 	const int32_t *int32;
-	uint32_t key, o;
-	unsigned int num_devices, i;
+	uint32_t key, o, cur_mq, mq;
+	uint64_t cur_mqflags, mqflags;
+	unsigned int num_devices, i, j;
 	char *tmp_str, *s, c;
 	const char **stropts;
 
@@ -625,6 +626,48 @@ void show_dev_detail(void)
 			}
 			g_variant_unref(gvar_list);
 
+		} else if (srci->datatype == SR_T_MQLIST) {
+			printf("    %s: ", srci->id);
+			if (maybe_config_get(driver, sdi, channel_group, key,
+					&gvar) == SR_OK
+					&& g_variant_is_of_type(gvar, G_VARIANT_TYPE_ARRAY)
+					&& g_variant_n_children(gvar) == 1) {
+				element = g_variant_get_child_value(gvar, 0);
+				g_variant_get(element, "(ut)", &cur_mq, &cur_mqflags);
+				g_variant_unref(element);
+				g_variant_unref(gvar);
+			} else
+				cur_mq = cur_mqflags = 0;
+
+			if (maybe_config_list(driver, sdi, channel_group,
+					key, &gvar_list) != SR_OK) {
+				printf("\n");
+				continue;
+			}
+			printf(" - supported measurements:\n");
+			num_elements = g_variant_n_children(gvar_list);
+			for (i = 0; i < num_elements; i++) {
+				printf("      ");
+				gvar = g_variant_get_child_value(gvar_list, i);
+				g_variant_get(gvar, "(ut)", &mq, &mqflags);
+				if ((srmqi = sr_key_info_get(SR_KEY_MQ, mq)))
+					printf("%s", srmqi->id);
+				else
+					printf("%d", mq);
+				for (j = 0, mask = 1; j < 32; j++, mask <<= 1) {
+					if (!(mqflags & mask))
+						continue;
+					if ((srmqfi = sr_key_info_get(SR_KEY_MQFLAGS, mqflags & mask)))
+						printf("/%s", srmqfi->id);
+					else
+						printf("/%ld", mqflags & mask);
+				}
+				if (mq == cur_mq && mqflags == cur_mqflags)
+					printf(" (current)");
+				printf("\n");
+			}
+			g_variant_unref(gvar_list);
+
 		} else {
 
 			/* Everything else */
-- 
2.30.2