Function DecodedLengthBinary

phxsqlproxy/phxsqlproxyutil.cpp:205–247

}

uint64_t DecodedLengthBinary(const char * buf, int len, int & len_field_size) {
    uint8_t first_bit = (uint8_t)(buf[0]);
    uint64_t package_len = 0;
    switch (first_bit) {
        case 251: {
            package_len = 0;
            len_field_size = 1;
            break;
        }
        case 252: {
            if (len < 3) {
                package_len = -1;
            } else {
                memcpy(&package_len, buf + 1, sizeof(char) * 2);
                len_field_size = 3;
            }
            break;
        }
        case 253: {
            if (len < 4) {
                package_len = -1;
            } else {
                memcpy(&package_len, buf + 1, sizeof(char) * 3);
                len_field_size = 4;
            }
            break;
        }
        case 254: {
            if (len < 9) {
                package_len = -1;
            } else {
                memcpy(&package_len, buf + 1, sizeof(char) * 8);
                len_field_size = 9;
            }
            break;
        }
        default:
            package_len = first_bit;
            len_field_size = 1;
            break;
    }
    return package_len;
}

std::string UIntToStr(uint32_t i) {
    char buf[16];