On Tue, May 03, 2022 at 11:28:58PM +0200, Ralf Hemmecke wrote:
> I am currently working on the jfricas interface.
> Unfortunately, there are some rather unsafe elements in it,
> I must patch the functions |mathprintWithNumber| and OBEY
>
> https://github.com/hemmecke/jfricas/blob/master/jfricas/webspad.lisp#L84
>
> ;;; Override a FriCAS function in order to remove the equation number.
> (DEFUN |mathprintWithNumber| (|x|)
> (PROG ()
> (RETURN
> (PROGN
> ;(|ioHook| '|startAlgebraOutput|)
> (|saySpadMsg| '|--FORMAT:BEG:Algebra|)
> (|maprin| (|outputTran2| |x|))
> (|saySpadMsg| '|--FORMAT:END:Algebra|)
> ;(|ioHook| '|endOfAlgebraOutput|)
> ))))
I do not see why you are doing this. If you want to call
'saySpadMsg' appropriate io hook should be enough. For
skipping line numbers setting '$IOindex' to NIL should
be enough.
>
> (defun OBEY (S)
> (sb-ext::process-exit-code
> (sb-ext::run-program "/bin/sh" (list "-c" S) :input t
> :output *standard-output* :error *standard-output*)))
>
> and would be somehow happy if I wouldn't have to do this.
That looks reasonable. Currently we have 't' which means
'*termianl-io*'. Usualy termial IO is the same as standard
output, but sometimes sbcl is doing crazy things with it.
AFAICS we _never_ want sbcl '*termianl-io*'.
> I do not know whether it's a good idea to integrate jfricas (in for sbcl)
> into the FriCAS sources. That would require to ask to include the
> hunchentoot webserver (or a nice and simple way possible without root
> access) to install hunchentoot at the start of jfricas.
If we can:
- integrate it into build system so that FriCAS builds when using
other lisp (so hunchentoot would be built conditionaly)
- actually works on reasonably large subset of Linux distributions
- does not break/interfere with users Lisp setup,
then this would be reasonable.
OTOH it is not clear what you _really_ need. Simple web server
is few hundred lines. Do you need any fancy features? I would
guess that you do not need TLS/SSL (for local use this adds essentially
no extra security). Can hunchentoot be stripped of unneeded
parts?
--
Waldek Hebisch
--
You received this message because you are subscribed to the Google Groups
"FriCAS - computer algebra system" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/fricas-devel/20220504012344.GC22656%40fricas.math.uni.wroc.pl.
