Rewriting code to use program_options library (pending ext-boost PR)

CMakeLists.txt

@@ -99,7 +99,7 @@ string(TIMESTAMP BUILD_DATE "%Y-%m-%d %H:%M:%S")
 
 configure_file("${CMAKE_CURRENT_SOURCE_DIR}/src/common/scm_rev.cpp.in" "${CMAKE_CURRENT_SOURCE_DIR}/src/common/scm_rev.cpp" @ONLY)
 
-find_package(Boost 1.84.0 CONFIG)
+find_package(Boost 1.84.0 CONFIG COMPONENTS program_options)
 find_package(FFmpeg 5.1.2 MODULE)
 find_package(fmt 10.2.0 CONFIG)
 find_package(glslang 14.2.0 CONFIG)
@@ -762,7 +762,7 @@ endif()
 create_target_directory_groups(shadps4)
 
 target_link_libraries(shadps4 PRIVATE magic_enum::magic_enum fmt::fmt toml11::toml11 tsl::robin_map xbyak::xbyak Tracy::TracyClient RenderDoc::API FFmpeg::ffmpeg Dear_ImGui gcn)
-target_link_libraries(shadps4 PRIVATE Boost::headers GPUOpen::VulkanMemoryAllocator sirit Vulkan::Headers xxHash::xxhash Zydis::Zydis glslang::SPIRV glslang::glslang SDL3::SDL3 pugixml::pugixml)
+target_link_libraries(shadps4 PRIVATE Boost::headers Boost::program_options GPUOpen::VulkanMemoryAllocator sirit Vulkan::Headers xxHash::xxhash Zydis::Zydis glslang::SPIRV glslang::glslang SDL3::SDL3 pugixml::pugixml)
 
 target_compile_definitions(shadps4 PRIVATE IMGUI_USER_CONFIG="imgui/imgui_config.h")
 target_compile_definitions(Dear_ImGui PRIVATE IMGUI_USER_CONFIG="${PROJECT_SOURCE_DIR}/src/imgui/imgui_config.h")

src/common/config.cpp

@@ -2,7 +2,9 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include <fstream>
+#include <iostream>
 #include <string>
+#include <boost/program_options.hpp>
 #include <common/version.h>
 #include <fmt/core.h>
 #include <fmt/xchar.h> // for wstring support
@@ -28,8 +30,13 @@ std::filesystem::path find_fs_path_or(const basic_value<TC>& v, const K& ky,
 }
 } // namespace toml
 
+namespace po = boost::program_options;
+
 namespace Config {
 
+// Program options map
+static po::variables_map optionMap;
+
 static bool isNeo = false;
 static bool isFullscreen = false;
 static bool playBGM = false;
@@ -42,7 +49,6 @@ static std::string logFilter;
 static std::string logType = "async";
 static std::string userName = "shadPS4";
 static std::string updateChannel;
-static std::string patchFile = "";
 static std::string backButtonBehavior = "left";
 static bool useSpecialPad = false;
 static int specialPadClass = 1;
@@ -89,6 +95,10 @@ bool isNeoMode() {
 }
 
 bool isFullscreenMode() {
+    if (optionMap.count("fullscreen")) {
+        return true;
+    }
+
     return isFullscreen;
 }
 
@@ -141,7 +151,11 @@ std::string getUpdateChannel() {
 }
 
 std::string getPatchFile() {
-    return patchFile;
+    if (optionMap.contains("patch-file")) {
+        return optionMap["patch-file"].as<std::string>();
+    }
+
+    return "";
 }
 
 std::string getBackButtonBehavior() {
@@ -312,10 +326,6 @@ void setUpdateChannel(const std::string& type) {
     updateChannel = type;
 }
 
-void setPatchFile(const std::string& fileName) {
-    patchFile = fileName;
-}
-
 void setBackButtonBehavior(const std::string& type) {
     backButtonBehavior = type;
 }
@@ -576,15 +586,24 @@ void load(const std::filesystem::path& path) {
     }
 }
 
-void loadArgs(int& argc, char* argv[]) {
+bool loadArgs(int argc, char* argv[]) {
-    for (int i = 0; i < argc; i++) {
+    // Declare the supported options.
-        const std::string arg = argv[i];
+    std::string description = fmt::format("Usage: {} [options] <elf or eboot.bin path>", argv[0]);
-        if (arg == "-p") {
+    po::options_description desc(description);
-            patchFile = argv[i + 1];
+    auto options = desc.add_options();
-        } else if (arg == "-f" || arg == "--fullscreen") {
+    options("help", "Shows this help message");
-            isFullscreen = true;
+    options("patch-file,p", po::value<std::string>(), "Specifies the patch file");
-        }
+    options("fullscreen,f", "Switches the emulator to fullscreen mode");
+
+    po::store(po::parse_command_line(argc, argv, desc), optionMap);
+    po::notify(optionMap);
+
+    if (argc == 1 || optionMap.count("help")) {
+        std::cout << desc << "\n";
+        return false;
     }
+
+    return true;
 }
 
 void save(const std::filesystem::path& path) {
@@ -690,7 +709,6 @@ void setDefaultValues() {
     } else {
         updateChannel = "Nightly";
     }
-    patchFile = "";
     cursorState = HideCursorState::Idle;
     cursorHideTimeout = 5;
     backButtonBehavior = "left";

src/common/config.h

@@ -13,7 +13,7 @@ enum HideCursorState : s16 { Never, Idle, Always };
 
 void load(const std::filesystem::path& path);
 void save(const std::filesystem::path& path);
-void loadArgs(int& argc, char* argv[]);
+bool loadArgs(int argc, char* argv[]);
 
 bool isNeoMode();
 bool isFullscreenMode();

src/emulator.cpp

@@ -256,14 +256,6 @@ void Emulator::Run(const std::filesystem::path& file) {
     std::exit(0);
 }
 
-void Emulator::Run(int& argc, char* argv[]) {
-    // Load config options from arguments
-    Config::loadArgs(argc, argv);
-    MemoryPatcher::patchFile = Config::getPatchFile();
-
-    this->Run(argv[1]);
-}
-
 void Emulator::LoadSystemModules(const std::filesystem::path& file) {
     constexpr std::array<SysModules, 13> ModulesToLoad{
         {{"libSceNgs2.sprx", &Libraries::Ngs2::RegisterlibSceNgs2},

src/emulator.h

@@ -26,7 +26,6 @@ public:
     ~Emulator();
 
     void Run(const std::filesystem::path& file);
-    void Run(int& argc, char* argv[]);
     void UpdatePlayTime(const std::string& serial);
 
 private:

src/main.cpp

@@ -2,6 +2,8 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include <fmt/core.h>
+#include "common/config.h"
+#include "common/memory_patcher.h"
 #include "emulator.h"
 
 #ifdef _WIN32
@@ -13,6 +15,13 @@ int main(int argc, char* argv[]) {
     SetConsoleOutputCP(CP_UTF8);
 #endif
 
+    // Parse command line arguments
+    if (!Config::loadArgs(argc, argv)) {
+        return 0;
+    }
+
+    MemoryPatcher::patchFile = Config::getPatchFile();
+
     if (argc == 1) {
         fmt::print("Usage: {} <elf or eboot.bin path>\n", argv[0]);
         return -1;
@@ -24,7 +33,7 @@ int main(int argc, char* argv[]) {
     }
 
     Core::Emulator emulator;
-    emulator.Run(argc, argv);
+    emulator.Run(argv[argc - 1]);
 
     return 0;
 }

src/qt_gui/main.cpp

@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include "common/config.h"
+#include "common/memory_patcher.h"
 #include "core/file_sys/fs.h"
 #include "emulator.h"
 #include "game_install_dialog.h"
@@ -18,13 +19,19 @@ int main(int argc, char* argv[]) {
 #ifdef _WIN32
     SetConsoleOutputCP(CP_UTF8);
 #endif
+    // Parse command line arguments
+    if (!Config::loadArgs(argc, argv)) {
+        return 0;
+    }
 
-    QApplication a(argc, argv);
+    MemoryPatcher::patchFile = Config::getPatchFile();
 
     // Load configurations and initialize Qt application
     const auto user_dir = Common::FS::GetUserPath(Common::FS::PathType::UserDir);
     Config::load(user_dir / "config.toml");
 
+    QApplication a(argc, argv);
+
     // Check if elf or eboot.bin path was passed as a command line argument
     bool has_command_line_argument = argc > 1;
 
@@ -44,7 +51,7 @@ int main(int argc, char* argv[]) {
     // Check for command line arguments
     if (has_command_line_argument) {
         Core::Emulator emulator;
-        emulator.Run(argc, argv);
+        emulator.Run(argv[argc - 1]);
     }
 
     // Run the Qt application