show: mark currently selected samplerate item in samplerates lists

Get the current value as well as the list for SR_CONF_SAMPLERATE keys,
and add the "(current)" marker to a list item when a match was found.

  $ sigrok-cli -d fx2lafw --show

diff --git a/show.c b/show.c
index e62f69746358663190d4a8b625871efd79497119..41474b3decfcc7cdea7cdfd92a15129f68998e39 100644 (file)
--- a/show.c
+++ b/show.c
@@ -393,6 +393,7 @@ void show_dev_detail(void)
        gsize num_elements;
        double dlow, dhigh, dcur_low, dcur_high;
        const uint64_t *uint64;
+       uint64_t cur_rate, rate;
        uint64_t p = 0, q = 0, low = 0, high = 0;
        uint64_t tmp_uint64, mask, cur_low, cur_high, cur_p, cur_q;
        GArray *opts;
@@ -535,6 +536,13 @@ void show_dev_detail(void)
                } else if (key == SR_CONF_SAMPLERATE) {
                        /* Supported samplerates */
                        printf("    %s", srci->id);
+                       cur_rate = ~0ull;
+                       if (maybe_config_get(driver, sdi, channel_group,
+                               SR_CONF_SAMPLERATE, &gvar) == SR_OK) {
+                               if (g_variant_is_of_type(gvar, G_VARIANT_TYPE_UINT64))
+                                       cur_rate = g_variant_get_uint64(gvar);
+                               g_variant_unref(gvar);
+                       }
                        if (maybe_config_list(driver, sdi, channel_group, SR_CONF_SAMPLERATE,
                                        &gvar_dict) != SR_OK) {
                                printf("\n");
@@ -546,9 +554,14 @@ void show_dev_detail(void)
                                                &num_elements, sizeof(uint64_t));
                                printf(" - supported samplerates:\n");
                                for (i = 0; i < num_elements; i++) {
-                                       if (!(s = sr_samplerate_string(uint64[i])))
+                                       rate = uint64[i];
+                                       s = sr_samplerate_string(rate);
+                                       if (!s)
                                                continue;
-                                       printf("      %s\n", s);
+                                       printf("      %s", s);
+                                       if (rate == cur_rate)
+                                               printf(" (current)");
+                                       printf("\n");
                                        g_free(s);
                                }
                                g_variant_unref(gvar_list);