Method rename

libcppcryptfs/filename/casecache.cpp:525–594

// when a directory is renamed, do a search and replace in the cache

bool CaseCache::rename(LPCWSTR oldpath, LPCWSTR newpath)
{
	bool bRet = true;

	wstring ucold;

	if (!touppercase(oldpath, ucold))
		return false;

	wstring ucnew;

	if (!touppercase(newpath, ucnew))
		return false;

	size_t oldlen = ucold.length();

	size_t newlen = ucnew.length();

	wstring newkey;

	list<wstring> toerase;

	list<pair<wstring, CaseCacheNode *>> toinsert;

	lock();

	try {

		for (auto it : m_map) {
			size_t keylen = it.first.length();

			if (keylen < oldlen)
				continue;

			if (wcsncmp(ucold.c_str(), it.first.c_str(), oldlen)) 
				continue;

			newkey = ucnew + it.first.substr(oldlen);

			it.second->m_path = newpath + it.second->m_path.substr(oldlen);

			it.second->m_key = newkey;

			toerase.push_back(it.first);

			toinsert.push_back(make_pair(newkey, it.second));
		} 

		for (auto it : toerase) {
			m_map.erase(it);
		}

		for (auto it : toinsert) {
			auto pr = m_map.insert(it);
			if (!pr.second) {
				// wasn't really inserted
				m_lru_list.erase(it.second->m_list_it);
				it.second->m_files.clear();