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Re: About logging / reporting
Emmanuel Medernach scripsit:
> I don't think you have to thread it through all your code, we have
> modules don't we ?
Yes, that was an irrelevance I shouldn't have brought up.
> The syslog interface is very similar to a port interface (in
> accordance with "Everything is a file"'s Unix philosophy):
> void openlog(const char *ident, int option, int facility);
> void syslog(int priority, const char *format, ...);
> void closelog(void);
But you'll notice that openlog() does not return anything recognizable
as a port, nor does syslog() accept anything like a port (unlike, say,
fprintf). Really, what openlog() does is to override certain parameters
(in the Scheme sense) that syslog() examines; in turn, closelog()
restores the defaults. The names "open" and "close" are very misleading.
> Currying 'syslog' is sufficient to obtain a true port interface :
> (syslog-open ident option facility)
> (syslog-get-port priority)
Yes, I suppose that will work. But I wouldn't like to see it a
requirement of how to do syslog in Scheme, simply because of making this
API less flexible.
> We digress, but for the sake of WG2, I am sure being able to
> create and handle custom ports like with Chicken or Racket's
> 'make-input-port' is a good thing to have.
I've been thinking about that, but I have not been able to come up with a
sufficiently universal and yet usable SPI (service-provider interface) for
such ports. We should move that part of the discussion to scheme-reports
or the WG2 list.
May the hair on your toes never fall out! John Cowan
--Thorin Oakenshield (to Bilbo) cowan@xxxxxxxx