Method mount

lib/vfs/roland.cc:308–347

    }

    void mount()
    {
        init();

        Bytes directory = getRolandBlock(0);
        ByteReader br(directory);
        br.seek(1);
        if (br.read(13) != "ROLAND-GCRDOS")
            throw BadFilesystemException();
        br.seek(32);

        std::map<std::string, std::shared_ptr<RolandDirent>> files;
        for (int i = 0; i < _config.directory_entries(); i++)
        {
            Bytes direntBytes = br.read(32);
            if (direntBytes[0] == 0)
            {
                int extent = direntBytes[15];
                std::string filename =
                    unmangleFilename(direntBytes.slice(1, 13));

                std::shared_ptr<RolandDirent> de;
                auto it = files.find(filename);
                if (it == files.end())
                {
                    files[filename] = de =
                        std::make_shared<RolandDirent>(filename);
                    _dirents.push_back(de);
                }
                else
                    de = it->second;

                de->putBlocks(this, extent * 16, direntBytes);
            }
        }

        br.seek(0xa00);
        for (int i = 0; i < _filesystemBlocks; i++)
            _allocationBitmap[i] = br.read_8();
    }

    std::shared_ptr<RolandDirent> findFileOrReturnNull(
        const std::string filename)