Function is_empty_directory

libcppcryptfs/util/fileutil.cpp:704–782

#ifdef _WIN32
bool
is_empty_directory(LPCWSTR path, BOOL bMustReallyBeEmpty, CryptContext *con)
{
	bool bret = true;

	WIN32_FIND_DATAW findData;

	HANDLE hFind = INVALID_HANDLE_VALUE;

	DWORD error = 0;

	try {

		wstring enc_path = path;

		const WCHAR *filePath = &enc_path[0];

		if (!filePath)
			throw((int)ERROR_FILE_NOT_FOUND);

		if (enc_path[enc_path.size() - 1] != '\\')
			enc_path.push_back('\\');

		enc_path.push_back('*');

		filePath = &enc_path[0];

		hFind = FindFirstFile(filePath, &findData);

		if (hFind == INVALID_HANDLE_VALUE) {
			error = GetLastError();
			throw((int)error);
		}

		vector<wstring> dummy;

		auto& deletable_files = con ? con->GetDeletableFiles() : dummy;

		auto can_be_deleted = [](const vector<wstring>& deletable_files, LPCWSTR fname) -> bool {
			auto count = deletable_files.size();
			for (size_t i = 0; i < count; i++) {
				if (lstrcmpi(deletable_files[i].c_str(), fname) == 0)
					return true;
			}
			return false;
		};

		while (hFind != INVALID_HANDLE_VALUE) {
			if (wcscmp(findData.cFileName, L"..") != 0 &&
				wcscmp(findData.cFileName, L".") != 0 &&
				(bMustReallyBeEmpty || !can_be_deleted(deletable_files, findData.cFileName))) {
				throw((int)ERROR_DIR_NOT_EMPTY);
			}
			if (!FindNextFile(hFind, &findData)) {
				break;
			}
		}
		error = GetLastError();