Class Directory

lib/vfs/smaky6fs.cc:135–176

    friend class Directory;
    class Directory
    {
    public:
        /* drStartSector=0 reads the root directory; any other value reads
         * the sub-directory stored in the first 3 sectors of a DR entry. */
        Directory(Smaky6Filesystem* fs, unsigned drStartSector = 0)
        {
            auto bytes = fs->getLogicalSector(drStartSector, 3);
            parseFrom(bytes, drStartSector);
        }

        std::shared_ptr<SmakyDirent> findFile(const std::string& filename)
        {
            for (auto& de : dirents)
                if (de->filename == filename)
                    return de;

            throw FileNotFoundException();
        }

    private:
        void parseFrom(const Bytes& bytes, unsigned sectorBase)
        {
            for (int i = 0; i < 32; i++)
            {
                auto dbuf = bytes.slice(i * 0x18, 0x18);
                /* 0x00 = empty slot; 0xFF = deleted entry */
                if (dbuf[0] && dbuf[0] != 0xff)
                {
                    auto de = std::make_shared<SmakyDirent>(dbuf);
                    /* Sub-directory entries use relative sector numbers;
                     * add the DR container's base sector to get absolute ones. */
                    de->startSector += sectorBase;
                    de->endSector   += sectorBase;
                    dirents.push_back(de);
                }
            }
        }

    public:
        std::vector<std::shared_ptr<SmakyDirent>> dirents;
    };

public:
    Smaky6Filesystem(const Smaky6FsProto& config,