Today I spent some minutes in seeing what could be done with Linux::Inotify. Actually not much because all you can do with events is print them or know the name of the file affected. I googled a bit and learnt that with C, one can do a switch and test for every possible event in order to do this or that. AFAICT, with Linux::Inotify there's no way of knowing which event occurred, what makes the module pretty useless. Except that I'm missing something, of course. The doc says "An Linux::Inotify::Event object has some interesting data members: mask, cookie and name" but I shouldn't be accessing them directly but through method calls, should I? (I'm pretty newbie to this OO thingy, precisely these days I'm reading on the subject).

So I decided to add this lines to the Event.pm module, where I think they belong:

sub type(%) {
   my $self = shift;
   return $reverse{$self->{mask}};
}
[download]

Now, one can do something more useful than just printing what happened:

## This code has no checking at all.

use strict;
use warnings;
use Linux::Inotify;

my $notifier = Linux::Inotify->new();
my $watch = $notifier->add_watch('.', Linux::Inotify::CREATE);

sub do_create {
    print "File $_[0] created\n";
    unlink $_[0];      ## Just for fun
}

my %dt = (
    create => \&do_create,
);

for (;;) {
    my @events = $notifier->read();
    for (@events) {
        $dt{$_->type()}->($_->fullname());
    }
}
[download]

Now, is there a way of knowing what happened without my sub type?

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.