Watches the current directory for file additions or removals. In a very simple and stupid manner.
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package Dir::Watch;
use warnings;
use strict;
use Cwd;
=head1 NAME
Dir::Watch - Watches the current directory for file additions or removals.
=head1 VERSION
Version 0.0.0
=cut
our $VERSION = '0.0.0';
=head1 SYNOPSIS
use Dir::Watch;
$dirwatch=Dir::Watch->new;
if($dirwatch->check){
print "There are new items\n";
}
=head1 METHODS
=head2 new
This initiates the object.
$dirwatch=Dir::Watch->new;
=cut
sub new{
my %args;
# if (defined($_[1])) {
# %args=%{$_[1]};
# }
$args{dir}=cwd;
my $self={ dir=>$args{dir} };
bless $self;
#get the stuff in the current directory
opendir(NEWREAD, $args{dir});
my @direntries=readdir(NEWREAD);
closedir(NEWREAD);
#builds the hash that will be used for checking
my %dirhash;
my $int=0;
while(defined($direntries[$int])){
$dirhash{$direntries[$int]}=1;
$int++;
}
$self->{dirhash}=\%dirhash;
return $self;
}
=head2 check
This checks for a new directories or files.
If any thing has been added or removed, true is returned.
If nothing has been added or removed, false is returned.
if(!$dirwatch->check){
print "There have been either files/directories added or removed.\n";
}
=cut
sub check{
my $self=$_[0];
#get the stuff in the current directory
opendir(CHECKREAD, $self->{dir});
my @direntries=readdir(CHECKREAD);
closedir(CHECKREAD);
#builds the hash that will be used for checking
my %dirhash;
my $int=0;
while(defined($direntries[$int])){
$dirhash{$direntries[$int]}=1;
$int++;
}
#check for anything new
$int=0;
while (defined($direntries[$int])) {
if (!defined( $self->{dirhash}{ $direntries[$int] } )) {
$self->{dirhash}=\%dirhash;
return 1;
}
$int++;
}
#check for any thing removed
$int=0;
my @keys=keys(%{ $self->{dirhash} });
while (defined( $keys[$int] )) {
if (!defined( $dirhash{ $keys[$int] } )) {
$self->{dirhash}=\%dirhash;
return 1;
}
$int++;
}
#saves the dir hash for checking later
$self->{dirhash}=\%dirhash;
#return false as if we got here nothing new was found or old was removed
return 0;
}
=head1 AUTHOR
Zane C. Bowers, C<< <vvelox at vvelox.net> >>
=head1 BUGS
Please report any bugs or feature requests to C<bug-dir-watch at rt.cpan.org>, or through
the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Dir-Watch>. I will be notified, and then you'll
automatically be notified of progress on your bug as I make changes.
=head1 SUPPORT
You can find documentation for this module with the perldoc command.
perldoc Dir::Watch
You can also look for information at:
=over 4
=item * RT: CPAN's request tracker
L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Dir-Watch>
=item * AnnoCPAN: Annotated CPAN documentation
L<http://annocpan.org/dist/Dir-Watch>
=item * CPAN Ratings
L<http://cpanratings.perl.org/d/Dir-Watch>
=item * Search CPAN
L<http://search.cpan.org/dist/Dir-Watch/>
=back
=head1 ACKNOWLEDGEMENTS
=head1 COPYRIGHT & LICENSE
Copyright 2009 Zane C. Bowers, all rights reserved.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
=cut
1; # End of Dir::Watch