print_data_len

print_data_len.cpp

void print_data_len(const std::vector<uint8_t>& data, uint16_t target_len = 0x7FFF)
{
    if (data.size() < 4) {
        std::cerr << "数据长度小于4，无法转换为 uint16_t。" << std::endl;
        return;
    }

    std::cout << "print len: " << data.size() << "\n";

    uint16_t p1 = 0;
    p1 = data[0] | (data[1] << 8);
    bool found = false;
    int count = 0;

    // 从第二个字节开始，确保每个 uint16_t 的前一个字节是前一个 uint16_t 的后一个字节
    for (size_t i = 1; i < data.size(); i += 2) {
        // 组合当前字节和前一个字节为 uint16_t
        uint16_t value = static_cast<uint16_t>(data[i]) | (static_cast<uint16_t>(data[i - 1]) << 8);

        // 设置字段宽度和左对齐
        std::cout << std::left << std::setw(10) << value;

        if ((p1 & value) < target_len && !found && i != 1) {
            found = true;
            std::cout << "decode len: " << (p1 & value) << "\n";
        }

        p1 = value;

        count++;
        if (count == 8) { // 每输出8个数值后换行
            std::cout << std::endl;
            count = 0;
        }
    }

    if (count > 0) {
        std::cout << std::endl; // 保证最后一行在输出后有换行
    }
}