Method loadFromFd

valdi_core/src/valdi_core/cpp/Utils/DiskUtils.cpp:143–169

}

Result<BytesView> DiskUtils::loadFromFd(int fd) {
    auto stat = statFromFd(fd);
    if (!stat.exists()) {
        return onLoadFromFdError(fd, "File does not exist");
    }

    auto fileSize = stat.size();

    auto bytes = makeShared<ByteBuffer>();
    bytes->resize(fileSize);

    size_t totalRead = 0;
    while (totalRead < fileSize) {
        auto result = read(fd, (*bytes)[totalRead], fileSize - totalRead);
        if (result < 0) {
            return onLoadFromFdError(fd, strerror(errno));
        }

        if (result == 0) {
            return onLoadFromFdError(fd, "Unexpectedly reached end of file");
        }

        totalRead += result;
    }

    return bytes->toBytesView();
}

Result<Void> DiskUtils::store(const Path& path, const BytesView& bytes) {
    return store(path, bytes.asStringView());