sort names in groupchat sidepanel

src/groupchat.c

@@ -121,7 +121,7 @@ static void groupchat_onGroupNamelistChange(ToxWindow *self, Tox *m, int groupnu
 
     groupchats[groupnum].num_peers = MIN(tox_group_number_peers(m, groupnum), MAX_GROUP_PEERS);
     tox_group_copy_names(m, groupnum, groupchats[groupnum].peer_names, groupchats[groupnum].num_peers);
-   //qsort(groupchats[groupnum].peer_names,
+    qsort(groupchats[groupnum].peer_names, groupchats[groupnum].num_peers, TOX_MAX_NAME_LENGTH, name_compare);
 }
 
 static void groupchat_onKey(ToxWindow *self, Tox *m, wint_t key)

src/misc_tools.c

@@ -113,3 +113,24 @@ void alert_window(ToxWindow *self)
     self->blink = true;
     beep();
 }
+
+/* case-insensitive string compare function for use with qsort - same return logic as strcmp */
+int name_compare(const void *nick1, const void *nick2)
+{
+    char s[strlen(nick1)];
+    char t[strlen(nick2)];
+    strcpy(s, (const char*) nick1);
+    strcpy(t, (const char*) nick2);
+
+    int i;
+
+    for (i = 0; s[i] != '\0' && t[i] != '\0'; ++i) {
+        s[i] = tolower(s[i]);
+        t[i] = tolower(t[i]);
+
+        if (s[i] != t[i])
+            break;
+    }
+
+    return s[i] - t[i];
+}

src/misc_tools.h

@@ -27,3 +27,6 @@ bool timed_out(uint64_t timestamp, uint64_t timeout, uint64_t curtime);
 
 /* Beeps and makes window tab blink */
 void alert_window(ToxWindow *self);
+
+/* case-insensitive string compare function for use with qsort - same return logic as strcmp */
+int name_compare(const void *nick1, const void *nick2);