Function checkVersionAndRead

src/api/c/stream.cpp:258–282

}

static af_array checkVersionAndRead(const char *filename,
                                    const unsigned index) {
    char version = 0;

    std::string filenameStr = std::string(filename);
    std::fstream fs(filenameStr, std::fstream::in | std::fstream::binary);
    // Throw exception if file is not open
    if (!fs.is_open()) {
        std::string errStr = "Failed to open: " + filenameStr;
        AF_ERROR(errStr.c_str(), AF_ERR_ARG);
    }

    if (fs.peek() == std::fstream::traits_type::eof()) {
        std::string errStr = filenameStr + " is empty";
        AF_ERROR(errStr.c_str(), AF_ERR_ARG);
    } else {
        fs.read(&version, sizeof(char));
    }
    fs.close();

    switch (version) {  // NOLINT(hicpp-multiway-paths-covered)
        case 1: return readArrayV1(filename, index);
        default: AF_ERROR("Invalid version", AF_ERR_ARG);
    }
}

int checkVersionAndFindIndex(const char *filename, const char *k) {
    char version = 0;