Function CalculateDataCRC

engine/Poseidon/Network/IntegrityCheck.cpp:47–68

}

unsigned int CalculateDataCRC(const char* path, int offset, int size)
{
    // reject files not inside current directory
    if (!IsRelativePath(path))
    {
        return 0;
    }
    QIFStreamB in;
    in.AutoOpen(path);
    if (in.fail())
    {
        return 0;
    }
    int endCheck = offset + size;
    saturate(offset, 0, in.rest());
    saturate(endCheck, offset, in.rest());

    Poseidon::Foundation::CRCCalculator crc;
    crc.Reset();
    crc.Add(in.act() + offset, endCheck - offset);
    return crc.GetResult();
}