Merge pull request #2 from luke-jr/vt100

Bugfix: Use ANSI/VT100 codes to update status line in a way that actually works

main.cpp

@@ -297,6 +297,7 @@ extern "C" void* ThreadDumper(void*) {
 }
 
 extern "C" void* ThreadStats(void*) {
+  bool first = true;
   do {
     char c[256];
     time_t tim = time(NULL);
@@ -304,7 +305,14 @@ extern "C" void* ThreadStats(void*) {
     strftime(c, 256, "[%y-%m-%d %H:%M:%S]", tmp);
     CAddrDbStats stats;
     db.GetStats(stats);
-    printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
+    if (first)
+    {
+      first = false;
+      printf("\n\n\n\x1b[3A");
+    }
+    else
+      printf("\x1b[2K\x1b[u");
+    printf("\x1b[s");
     uint64_t requests = 0;
     uint64_t queries = 0;
     for (unsigned int i=0; i<dnsThread.size(); i++) {