Add CLI argument to launch the emulator with global config or with default settings (#3688)

* --config-clean, --config-global

* copyright 2025

* fine you win

* copyright 2024

src/common/config.cpp

@@ -8,6 +8,7 @@
 #include <fmt/xchar.h> // for wstring support
 #include <toml.hpp>
 
+#include "common/assert.h"
 #include "common/config.h"
 #include "common/logging/formatter.h"
 #include "common/path_util.h"
@@ -74,18 +75,34 @@ std::optional<T> get_optional(const toml::value& v, const std::string& key) {
 
 namespace Config {
 
+ConfigMode config_mode = ConfigMode::Default;
+
+void setConfigMode(ConfigMode mode) {
+    config_mode = mode;
+}
+
 template <typename T>
 class ConfigEntry {
 public:
+    const T default_value;
     T base_value;
     optional<T> game_specific_value;
-    ConfigEntry(const T& t = T()) : base_value(t), game_specific_value(nullopt) {}
+    ConfigEntry(const T& t = T()) : default_value(t), base_value(t), game_specific_value(nullopt) {}
     ConfigEntry operator=(const T& t) {
         base_value = t;
         return *this;
     }
     const T get() const {
-        return game_specific_value.has_value() ? *game_specific_value : base_value;
+        switch (config_mode) {
+        case ConfigMode::Default:
+            return game_specific_value.value_or(base_value);
+        case ConfigMode::Global:
+            return base_value;
+        case ConfigMode::Clean:
+            return default_value;
+        default:
+            UNREACHABLE();
+        }
     }
     void setFromToml(const toml::value& v, const std::string& key, bool is_game_specific = false) {
         if (is_game_specific) {

src/common/config.h

@@ -9,6 +9,13 @@
 
 namespace Config {
 
+enum class ConfigMode {
+    Default,
+    Global,
+    Clean,
+};
+void setConfigMode(ConfigMode mode);
+
 struct GameInstallDir {
     std::filesystem::path path;
     bool enabled;

src/main.cpp

@@ -62,6 +62,10 @@ int main(int argc, char* argv[]) {
                     "parent of game path\n"
                     "  --wait-for-debugger           Wait for debugger to attach\n"
                     "  --wait-for-pid <pid>          Wait for process with specified PID to stop\n"
+                    "  --config-clean                Run the emulator with the default config "
+                    "values, ignores the config file(s) entirely.\n"
+                    "  --config-global               Run the emulator with the base config file "
+                    "only, ignores game specific configs.\n"
                     "  -h, --help                    Display this help message\n";
              exit(0);
          }},
@@ -151,6 +155,8 @@ int main(int argc, char* argv[]) {
              exit(0);
          }},
         {"--log-append", [&](int& i) { Common::Log::SetAppend(); }},
+        {"--config-clean", [&](int& i) { Config::setConfigMode(Config::ConfigMode::Clean); }},
+        {"--config-global", [&](int& i) { Config::setConfigMode(Config::ConfigMode::Global); }},
         {"--override-root",
          [&](int& i) {
              if (++i >= argc) {
@@ -249,7 +255,6 @@ int main(int argc, char* argv[]) {
     // Run the emulator with the resolved eboot path
     Core::Emulator* emulator = Common::Singleton<Core::Emulator>::Instance();
     emulator->executableName = argv[0];
-    emulator->waitForDebuggerBeforeRun = waitForDebugger;
     emulator->Run(eboot_path, game_args, game_folder);
 
     return 0;

src/qt_gui/main.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 shadPS4 Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include "iostream"
@@ -68,6 +68,10 @@ int main(int argc, char* argv[]) {
                     "parent of game path\n"
                     "  --wait-for-debugger           Wait for debugger to attach\n"
                     "  --wait-for-pid <pid>          Wait for process with specified PID to stop\n"
+                    "  --config-clean                Run the emulator with the default config "
+                    "values, ignores the config file(s) entirely.\n"
+                    "  --config-global               Run the emulator with the base config file "
+                    "only, ignores game specific configs.\n"
                     "  -h, --help                    Display this help message\n";
              exit(0);
          }},
@@ -142,6 +146,8 @@ int main(int argc, char* argv[]) {
              exit(0);
          }},
         {"--log-append", [&](int& i) { Common::Log::SetAppend(); }},
+        {"--config-clean", [&](int& i) { Config::setConfigMode(Config::ConfigMode::Clean); }},
+        {"--config-global", [&](int& i) { Config::setConfigMode(Config::ConfigMode::Global); }},
         {"--override-root",
          [&](int& i) {
              if (++i >= argc) {