Restore support for datadir CLI argument to specify settings storage folder.

Author: mpaperno

src/BambuStudio.cpp

@@ -8341,8 +8341,6 @@ bool CLI::setup(int argc, char **argv)
         for (const t_optiondef_map::value_type &optdef : *options)
             m_config.option(optdef.first, true);
 
-    //set_data_dir(m_config.opt_string("datadir"));
-
     //FIXME Validating at this stage most likely does not make sense, as the config is not fully initialized yet.
     if (!validity.empty()) {
         boost::nowide::cerr << "Params in command line error: "<< std::endl;
@@ -8351,6 +8349,13 @@ bool CLI::setup(int argc, char **argv)
         return false;
     }
 
+    // Set custom configuration storage location if invoked with --datadir argument.
+    if (m_config.has("datadir") && !m_config.opt_string("datadir").empty()) {
+        // Don't validate existence or create it right now, should be done in GUI_App::init_app_config(), same as for default data dir.
+        // We do want to store the full path in native format because that's how all other sources of the global data_dir are stored.
+        set_data_dir(boost::filesystem::absolute(m_config.opt_string("datadir")).make_preferred().string());
+    }
+
     return true;
 }
 

src/libslic3r/PrintConfig.cpp

@@ -9839,6 +9839,11 @@ CLIMiscConfigDef::CLIMiscConfigDef()
     def->tooltip = L("Automatically export current configuration to the specified file.");
 */
 
+    def = this->add("datadir", coString);
+    def->label = "Configuration data directory";
+    def->tooltip = "Use and store all program settings at the given directory instead of the default location.";
+    def->cli_params = "dir";
+
     def = this->add("outputdir", coString);
     def->label = "Output directory";
     def->tooltip = "Output directory for the exported files.";