add files back

src/helper_funcs.cpp

@@ -0,0 +1,34 @@
+#include <csignal>
+#include <curses.h>
+#include <iostream>
+#include <stdio.h>
+#include <string>
+#include <termios.h>
+#include <unistd.h>
+
+void safe_exit(int code) {
+  switch (code) {
+  case SIGTERM:
+    std::cerr << "\nreceived SIGTERM exiting...\n";
+    break;
+  case SIGINT:
+    std::cerr << "\nreceived SIGINT exiting...\n";
+    break;
+  case SIGQUIT:
+    std::cerr << "\nreceived SIGQUIT exiting...\n";
+    break;
+  case SIGHUP:
+    std::cerr << "\nreceived SIGHUP exiting...\n";
+    break;
+
+  case SIGSEGV:
+    std::cerr << "\nreceived SIGSEGV(segmentaiton fault) exiting...\nIf this "
+                 "repeats please report it as bug\n";
+    break;
+
+  default:
+    break;
+  }
+
+  exit(code);
+}