Subj : last_read and scan_ptr values
To : Nightfox
From : Digital Man
Date : Sun Mar 29 2015 11:45 pm
Re: last_read and scan_ptr values
By: Nightfox to Digital Man on Fri Mar 27 2015 10:49 pm
> Re: last_read and scan_ptr values
> By: Digital Man to Nightfox on Thu Mar 26 2015 21:55:01
>
> If a new message is posted in a sub-board and that's the only message in the
> sub-board, it seems that scan_ptr and last_read would point to that message
> (is that correct?).
Posting a message does not modify either the user's scan_ptr or last_read
values. Only reading messages modifies those values.
> If the currently logged-in user reads that message,
> then scan_ptr and last_read would remain unchanged since that's the only
> message in the sub-board.
No, if the user has never read messages on a sub-board, then their scan_ptr and
last_read values would be 0 (no message).
> During a newscan, how can a JavaScript script
> determine whether the user has read that message (even if it wasn't written
> to the user - so the MSG_READ attribute wouldn't be set)?
The MSG_READ attribute should be set anytime a user reads a message addressed
to them and the attribute is not already set. You don't need to check any
pointers for that. You can see how Synchronet checks/sets the MSG_READ
attribute by searching for MSG_READ in:
http://cvs.synchro.net/cgi-bin/viewcvs.cgi/src/sbbs3/readmsgs.cpp
digital man
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