inline HRESULT CreateDirectoryDeepNoThrow()

in include/wil/filesystem.h [112:142]

31 lines of code
7 McCabe index (conditional complexity)


    inline HRESULT CreateDirectoryDeepNoThrow(PCWSTR path) WI_NOEXCEPT
    {
        if (::CreateDirectoryW(path, nullptr) == FALSE)
        {
            DWORD lastError = ::GetLastError();
            if (lastError == ERROR_PATH_NOT_FOUND)
            {
                size_t parentLength;
                if (try_get_parent_path_range(path, &parentLength))
                {
                    wistd::unique_ptr<wchar_t[]> parent(new (std::nothrow) wchar_t[parentLength + 1]);
                    RETURN_IF_NULL_ALLOC(parent.get());
                    RETURN_IF_FAILED(StringCchCopyNW(parent.get(), parentLength + 1, path, parentLength));
                    RETURN_IF_FAILED(CreateDirectoryDeepNoThrow(parent.get())); // recurs
                }
                if (::CreateDirectoryW(path, nullptr) == FALSE)
                {
                    lastError = ::GetLastError();
                    if (lastError != ERROR_ALREADY_EXISTS)
                    {
                        RETURN_WIN32(lastError);
                    }
                }
            }
            else if (lastError != ERROR_ALREADY_EXISTS)
            {
                RETURN_WIN32(lastError);
            }
        }
        return S_OK;
    }