Re: [Scid-users] 16.7mio game limit

[Fulvio <fb...@li...>]

nl...@gn... wrote:
> Hi, 
> I've found scid has a limit of 16.7 million (2^24) games per database,
> is there an easy way to change this to 32bit or something?
>
>   
Easy: i don't think so.

However the code already use a 32bit uint as gameNumberT.
I looked at src/index.h:
const gameNumberT  MAX_GAMES          = 16777214;
// max. number of games is 2^(3*8)-1-1,
// The "2^(3*8)-1" as si4 only uses three bytes to store this integer,

 From the comment it seems that the three byte is a limit introduced 
with the 4th database version of Scid.
The limit is enforced in Index::WriteHeader():
FilePtr->WriteThreeBytes (Header.numGames);

and it's easy to change, but will make scid incompatible with older version.
Also, i suppose there is a reason why the limit was introduced that i do 
not know.

Hope it helps, and if you decide to tinker with the code, please report 
back your conclusions to the community.

Bye,
Fulvio