Thanks, Dupéron, that's helpful. On Fri, Jan 20, 2017 at 8:35 PM, Dupéron Georges <[email protected]> wrote: > Le vendredi 20 janvier 2017 19:47:11 UTC+1, David K. Storrs a écrit : >> I see that I can get the event telling me that something changed. As >> far as I can tell the event contains no information about *what* >> changed, it simply alerts that *something* changed. Likewise, the >> monitor is only for the directory that I point it at, not for the >> subdirectories. > > There *should* be a way to know what changed, at least in Linux as inotify > allows this IIRC. Someone already wrote an FFI wrapper for inotify, hopefully > it suits your needs (if it does, it would be cool to send a Pull Request to > turn the repo in a Racket package, so that it can be put on > pkgn.racket-lang.org): > > https://github.com/samdphillips/racket-inotify > > As for monitoring subdirectories, unfortunately (and surprisingly) this is > not possible with inotify on Linux. From the man page: > > Inotify monitoring of directories is not recursive: to monitor > subdirectories under a directory, additional watches must be created. > > Fortunately, this should be easy enough to do in Racket, thanks to the > wonderful in-directory: > > (define (watch-recursively d) > (for ([subnode (in-sequences (in-value d) (in-directory d))]) > (when (directory-exists? subnode) ;; filter out files > (watch-the-directory subnode))) > > This might take a while (and use up some resources) when watching a large > directory :-( . > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout.
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