Method GetDllPath

TranslucentTB/loadabledll.cpp:11–69

#include "../ProgramLog/error/std.hpp"

std::filesystem::path LoadableDll::GetDllPath(const std::optional<std::filesystem::path> &storageFolder, bool copyDll, std::wstring_view dll)
{
	std::error_code err;

	const auto [loc, hr] = win32::GetExeLocation();
	HresultVerify(hr, spdlog::level::critical, L"Failed to determine executable location!");

	std::filesystem::path dllPath = loc.parent_path() / dll;

	if (copyDll)
	{
		// copy the file over to a place Explorer can read. It can't be injected from WindowsApps.
		// when running portable, copy it to the temp folder anyways, to allow ejecting the device TTB is running from.
		std::filesystem::path tempFolder;
		if (storageFolder)
		{
			tempFolder = *storageFolder / L"TempState";
		}
		else
		{
			tempFolder = std::filesystem::temp_directory_path(err);
			if (!err)
			{
				tempFolder /= APP_NAME;
			}
			else
			{
				StdErrorCodeHandle(err, spdlog::level::critical, L"Failed to get temp folder path.");
			}
		}

		std::filesystem::create_directories(tempFolder, err);
		if (err) [[unlikely]]
		{
			StdErrorCodeHandle(err, spdlog::level::critical, L"Failed to create " APP_NAME " temp folder.");
		}

		auto tempDllPath = tempFolder / dll;
		std::filesystem::copy_file(dllPath, tempDllPath, std::filesystem::copy_options::update_existing, err);
		if (err) [[unlikely]]
		{
			if (err.category() == std::system_category() && err.value() == ERROR_SHARING_VIOLATION)
			{
				Localization::ShowLocalizedMessageBox(IDS_RESTART_REQUIRED, MB_OK | MB_ICONWARNING | MB_SETFOREGROUND).join();
				ExitProcess(1);
			}
			else
			{
				StdErrorCodeHandle(err, spdlog::level::critical, std::format(L"Failed to copy {}", dll));
			}
		}

		return tempDllPath;
	}
	else
	{
		return dllPath;
	}