Add all the files

src/config/PermanentStorage.cpp

@@ -0,0 +1,76 @@
+#include "PermanentStorage.h"
+#include "config/CemuConfig.h"
+#include "util/helpers/SystemException.h"
+
+PermanentStorage::PermanentStorage()
+{
+	if (!GetConfig().permanent_storage)
+		throw PSDisabledException();
+	
+	const char* appdata = std::getenv("LOCALAPPDATA");
+	if (!appdata)
+		throw std::runtime_error("can't get LOCALAPPDATA");
+	m_storage_path = appdata;
+	m_storage_path /= "Cemu";
+	
+	fs::create_directories(m_storage_path);
+}
+
+PermanentStorage::~PermanentStorage()
+{
+	if (m_remove_storage)
+	{
+		std::error_code ec;
+		fs::remove_all(m_storage_path, ec);
+		if (ec)
+		{
+			SystemException ex(ec);
+			forceLog_printf("can't remove permanent storage: %s", ex.what());
+		}
+	}
+}
+
+void PermanentStorage::ClearAllFiles() const
+{
+	fs::remove_all(m_storage_path);
+	fs::create_directories(m_storage_path);
+}
+
+void PermanentStorage::RemoveStorage()
+{
+	m_remove_storage = true;
+}
+
+void PermanentStorage::WriteStringToFile(std::string_view filename, std::string_view content)
+{
+	const auto name = m_storage_path.append(filename.data(), filename.data() + filename.size());
+	std::ofstream file(name.string());
+	file.write(content.data(), (uint32_t)content.size());
+}
+
+std::string PermanentStorage::ReadFile(std::string_view filename) noexcept
+{
+	try
+	{
+		const auto name = m_storage_path.append(filename.data(), filename.data() + filename.size());
+		std::ifstream file(name, std::ios::in | std::ios::ate);
+		if (!file.is_open())
+			return {};
+
+		const auto end = file.tellg();
+		file.seekg(0, std::ios::beg);
+		const auto file_size = end - file.tellg();
+		if (file_size == 0)
+			return {};
+
+		std::string result;
+		result.resize(file_size);
+		file.read(result.data(), file_size);
+		return result;
+	}
+	catch (...)
+	{
+		return {};
+	}
+	
+}