Method lookup

libcppcryptfs/filename/casecache.cpp:297–372

int CaseCache::lookup(LPCWSTR path, wstring& result_path, bool force_not_found)
{

	if (!wcscmp(path, L"\\") || !wcscmp(path, L"\\*")) {
		result_path = path;
		return CASE_CACHE_FOUND;
	}

	int ret;

	wstring dir;
	wstring file;

	if (!get_dir_and_file_from_path(path, &dir, &file))
		return CASE_CACHE_ERROR;

	wstring ucdir;
	wstring ucfile;

	if (!touppercase(dir.c_str(), ucdir))
		return CASE_CACHE_ERROR;

	wstring file_without_stream;
	wstring stream;

	get_file_stream(file.c_str(), &file_without_stream, &stream);

	if (!touppercase(file_without_stream.c_str(), ucfile))
		return CASE_CACHE_ERROR;

	lock();

	m_lookups++;

	try {

		auto it = m_map.find(ucdir);

		if (it == m_map.end()) {
			ret = CASE_CACHE_MISS;
		} else {

			CaseCacheNode *node = it->second;

			if (!check_node_clean(node)) {
				remove_node(it);
				ret = CASE_CACHE_MISS;
			} else {

				update_lru(node);

				auto nit = force_not_found ? node->m_files.end() :  node->m_files.find(ucfile);

				bool isRoot = wcscmp(node->m_path.c_str(), L"\\") == 0;

				if (nit != node->m_files.end()) {
					result_path = node->m_path + (isRoot ? L"" : L"\\") + nit->second + stream;
					ret = CASE_CACHE_FOUND;