Perl Advent 2012-12-01: Sweet Path::Class is Coming to Town

[tobyink]

Today's Perl Advent is about Path::Class - definitely my favourite file/directory manipulation tool. I was disappointed to see that it didn't also mention David Golden's Path::Class::Rule.

So anyway, here's my rewrite of the script from "How can i debug compound map/grep statements just using print?" using Path::Class::Rule...

use 5.010;
use strict;
use warnings;

use Getopt::Long qw( :config no_ignore_case );
use Path::Class::Rule;

GetOptions(
    'help|h'   => sub { help(0) },
    'suffix=s' => \(my $suffix = ''),
    'age=i'    => \(my $age    = 0),
    'count'    => \(my $count  = 0),
);

@ARGV or help(1);

my @matches =
    "Path::Class::Rule"
    -> new
    -> file
    -> name(qr{\.$suffix$})
    -> modified(">$age")
    -> all(@ARGV);

if ($count) {
    say "count: ", scalar @matches;
}
else {
    say for @matches;
}

sub help {
    print <<"USAGE"; exit($_[0]);
$0 --suffix=SUFFIX --age=DAYS DIR [DIR ...]
$0 --suffix=SUFFIX --age=DAYS --count DIR [DIR ...]
USAGE
}