virtual Logitech G27 for Gran Turismo 6 (#17135)

rpcs3/Emu/Io/LogitechG27Config.cpp

@@ -0,0 +1,66 @@
+#include "stdafx.h"
+
+#ifdef HAVE_SDL3
+
+#include "Utilities/File.h"
+#include "LogitechG27Config.h"
+
+emulated_logitech_g27_config g_cfg_logitech_g27;
+
+LOG_CHANNEL(cfg_log, "CFG");
+
+emulated_logitech_g27_config::emulated_logitech_g27_config()
+	: m_path(fmt::format("%s%s.yml", fs::get_config_dir(true), "LogitechG27"))
+{
+}
+
+void emulated_logitech_g27_config::reset()
+{
+	const std::lock_guard<std::mutex> lock(m_mutex);
+	cfg::node::from_default();
+}
+
+void emulated_logitech_g27_config::save(bool lock_mutex)
+{
+	std::unique_lock lock(m_mutex, std::defer_lock);
+	if (lock_mutex)
+	{
+		lock.lock();
+	}
+	cfg_log.notice("Saving LogitechG27 config: '%s'", m_path);
+
+	if (!fs::create_path(fs::get_parent_dir(m_path)))
+	{
+		cfg_log.fatal("Failed to create path: '%s' (%s)", m_path, fs::g_tls_error);
+	}
+
+	if (!cfg::node::save(m_path))
+	{
+		cfg_log.error("Failed to save LogitechG27 config to '%s' (error=%s)", m_path, fs::g_tls_error);
+	}
+}
+
+bool emulated_logitech_g27_config::load()
+{
+	const std::lock_guard lock(m_mutex);
+
+	cfg_log.notice("Loading LogitechG27 config: %s", m_path);
+
+	from_default();
+
+	if (fs::file cfg_file{m_path, fs::read})
+	{
+		if (const std::string content = cfg_file.to_string(); !content.empty())
+		{
+			return from_string(content);
+		}
+	}
+	else
+	{
+		save(false);
+	}
+
+	return true;
+}
+
+#endif