ord: add -no_settings flag to control gui settings

Signed-off-by: Peter Gadfort <[email protected]>

src/Main.cc

@@ -117,7 +117,7 @@ int cmd_argc;
 char** cmd_argv;
 const char* log_filename = nullptr;
 const char* metrics_filename = nullptr;
-bool no_init = false;
+bool no_settings = false;
 
 static const char* init_filename = ".openroad";
 
@@ -258,7 +258,7 @@ int main(int argc, char* argv[])
     remove(metrics_filename);
   }
 
-  no_init = findCmdLineFlag(argc, argv, "-no_init");
+  no_settings = findCmdLineFlag(argc, argv, "-no_settings");
 
   cmd_argc = argc;
   cmd_argv = argv;
@@ -277,7 +277,7 @@ int main(int argc, char* argv[])
       logger->warn(utl::ORD, 38, "-gui is not yet supported with -python");
     }
 
-    if (!no_init) {
+    if (!findCmdLineFlag(cmd_argc, cmd_argv, "-no_init")) {
       logger->warn(utl::ORD, 39, ".openroad ignored with -python");
     }
 
@@ -353,7 +353,7 @@ static int tclAppInit(int& argc,
       ;
     }
 
-    gui::startGui(argc, argv, interp, "", true, !no_init);
+    gui::startGui(argc, argv, interp, "", true, !no_settings);
   } else {
     // init tcl
     if (Tcl_Init(interp) == TCL_ERROR) {
@@ -402,7 +402,7 @@ static int tclAppInit(int& argc,
     const bool gui_enabled = gui::Gui::enabled();
 
     const char* home = getenv("HOME");
-    if (!no_init && home) {
+    if (!findCmdLineFlag(argc, argv, "-no_init") && home) {
       const char* restore_state_cmd = "source -echo -verbose {{{}}}";
 #ifdef USE_STD_FILESYSTEM
       std::filesystem::path init(home);
@@ -476,14 +476,15 @@ static void showUsage(const char* prog, const char* init_filename)
 {
   printf("Usage: %s [-help] [-version] [-no_init] [-no_splash] [-exit] ", prog);
   printf("[-gui] [-threads count|max] [-log file_name] [-metrics file_name] ");
-  printf("cmd_file\n");
+  printf("[-no_settings] cmd_file\n");
   printf("  -help                 show help and exit\n");
   printf("  -version              show version and exit\n");
   printf("  -no_init              do not read %s init file\n", init_filename);
   printf("  -threads count|max    use count threads\n");
   printf("  -no_splash            do not show the license splash at startup\n");
   printf("  -exit                 exit after reading cmd_file\n");
   printf("  -gui                  start in gui mode\n");
+  printf("  -no_settings          do not load the previous gui settings\n");
 #ifdef ENABLE_PYTHON3
   printf(
       "  -python               start with python interpreter [limited to db "