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#!/usr/bin/env perl
## Copyright © 2010 by Daniel Friesel <derf@finalrewind.org>
## License: WTFPL <http://sam.zoy.org/wtfpl>
## 0. You just DO WHAT THE FUCK YOU WANT TO.
use strict;
use warnings;
use 5.010;
use autodie;
use Cwd;
use Digest::SHA qw(sha1_hex);
use File::Find;
use Getopt::Long;
use Storable qw(nstore retrieve);
use Time::Progress;
my $base = getcwd();
my $rel_paths = 1;
my $read_size = (2 ** 20) * 4; # 4 MiB
my $db_file = "$base/hashl.db";
my $total = 0;
my $cur = 0;
my $timer;
my $db;
GetOptions(
'd|database=s' => \$db_file,
);
my $action = $ARGV[0];
if (not defined $action) {
die("Usage: $0 <action>\n");
}
if (-r $db_file) {
$db = retrieve($db_file);
}
sub get_total {
my $file = $File::Find::name;
if (-f $file and $file ne $db_file) {
$total++;
}
}
sub drop_deleted {
for my $file (keys %{$db}) {
if (! -e $file) {
delete $db->{$file};
}
}
}
sub hash_file {
my ($file) = @_;
my ($fh, $data);
open($fh, '<', $file);
binmode($fh);
read($fh, $data, $read_size);
close($fh);
return sha1_hex($data);
}
sub process_file {
my $file = $File::Find::name;
my $path = $file;
my ($size, $mtime) = (stat($file))[7,9];
local $| = 1;
if (not -f $file or $file eq $db_file) {
return;
}
$cur++;
if ($rel_paths) {
$file = substr($file, length($base) + 1);
}
print $timer->report("\r\e[2KUpdating: %p done, %L elapsed, %E remaining", $cur);
if (exists($db->{$file}) and
$db->{$file}->{'mtime'} == $mtime and
$db->{$file}->{'size'} == $size ) {
return;
}
$db->{$file} = {
hash => hash_file($path),
mtime => $mtime,
size => $size,
};
if (($cur % 100) == 0) {
nstore($db, $db_file);
}
}
if ($action eq 'update') {
drop_deleted();
find(\&get_total, $base);
$timer = Time::Progress->new();
$timer->attr(
min => 1,
max => $total
);
find(\&process_file, $base);
print "\n";
nstore($db, $db_file);
}
elsif ($action eq 'list') {
for my $name (sort keys %{$db}) {
my $file = $db->{$name};
printf("%s %s\n", $file->{'hash'}, $name);
}
}
__END__
=head1 NAME
=head1 SYNOPSIS
=head1 DESCRIPTION
=head1 OPTIONS
=head1 EXIT STATUS
=head1 CONFIGURATION
=head1 DEPENDENCIES
=head1 BUGS AND LIMITATIONS
=head1 AUTHOR
Copyright (C) 2010 by Daniel Friesel E<lt>derf@finalrewind.orgE<gt>
=head1 LICENSE
0. You just DO WHAT THE FUCK YOU WANT TO.
|
