Function insertFile

tools/brother120tool.cc:345–401

}

void insertFile(const std::string& filename)
{
    auto leafname = getLeafname(filename);
    if (leafname.size() > 8)
        error("filename too long");
    std::cout << fmt::format("Inserting '{}'\n", leafname);

    std::ifstream inputFile(filename, std::ios::in | std::ios::binary);
    if (!inputFile)
        error("unable to open input file: {}", strerror(errno));

    if (directory.find(leafname) != directory.end())
        error("duplicate filename: {}", leafname);

    auto dirent = std::make_unique<Dirent>();
    dirent->filename = leafname;
    dirent->type = (leafname.find('*') != std::string::npos);
    dirent->startSector = 0xffff;
    dirent->sectorCount = 0;

    uint16_t lastSector = 0xffff;
    uint16_t checksum = 0;
    while (!inputFile.eof())
    {
        uint8_t buffer[SECTOR_SIZE] = {};
        inputFile.read((char*)buffer, sizeof(buffer));
        for (int i = 0; i < inputFile.gcount(); i++)
            checksum += buffer[i];
        if (inputFile.gcount() == 0)
            break;
        if (inputFile.bad())
            error("I/O error on read: {}", strerror(errno));

        uint16_t thisSector = allocateSector();
        if (lastSector == 0xffff)
            dirent->startSector = thisSector;
        else
            allocationTable[lastSector] = thisSector;
        dirent->sectorCount++;

        file.seekp((thisSector - 1) * 0x100, std::ifstream::beg);
        file.write((char*)buffer, sizeof(buffer));
        if (file.bad())
            error("I/O error on write: {}", strerror(errno));

        lastSector = thisSector;
    }

    if (leafname == "*boot")
    {
        std::cout << fmt::format(
            "Writing boot sector with checksum 0x{:04x}\n", checksum);
        writeBootSector(*dirent, checksum);
    }

    directory[leafname] = std::move(dirent);
}