cfptr_jni.cpp

std::wstring toFormattedHex(int input) {
    const int max_int_length = 10;
    wchar_t* temp = new wchar_t[max_int_length + 1];
    swprintf( temp, max_int_length, L"%x", input);
    std::wstring hex(temp);
    delete [] temp;

    std::wstring result = L"00 00";
    switch (hex.length()) {
        case 1: {
            result.replace(1, 1, hex.substr(0, 1));
            break;
        }
        case 2: {
            result.replace(0, 2, hex.substr(0, 2));
            break;
        }
        case 3: {
            result.replace(0, 2, hex.substr(1, 2));
            result.replace(3, 1, hex.substr(0, 1));
            break;
        }
        case 4: {
            result.replace(0, 2, hex.substr(2, 2));
            result.replace(3, 2, hex.substr(0, 2));
            break;
        }
        default:
            break;
    }
    return result;
}