1 files changed, 155 insertions, 0 deletions
diff --git a/lib/App/Hashl.pm b/lib/App/Hashl.pm
new file mode 100644
index 0000000..f99406f
--- /dev/null
+++ b/lib/App/Hashl.pm
@@ -0,0 +1,155 @@
+package App::Hashl;
+
+use strict;
+use warnings;
+use autodie;
+use 5.010;
+
+use Digest::SHA qw(sha1_hex);
+use Storable qw(nstore retrieve);
+
+my $VERSION = '0.1';
+
+sub new {
+	my ($obj, %conf) = @_;
+	my $ref = {
+		files => {},
+		ignored => {},
+	};
+
+	$ref->{config} = \%conf;
+	$ref->{config}->{read_size} //=  (2 ** 20) * 4, # 4 MiB
+
+	return bless($ref, $obj);
+}
+
+sub new_from_file {
+	my ($obj, $file) = @_;
+	my $ref = retrieve($file);
+	return bless($ref, $obj);
+}
+
+sub si_size {
+	my ($self, $bytes) = @_;
+	my @post = (' ', qw(k M G T));
+
+	while ($bytes > 1024) {
+		$bytes /= 1024;
+		shift @post;
+	}
+
+	return sprintf("%6.1f%s", $bytes, $post[0]);
+}
+
+sub hash_file {
+	my ($self, $file) = @_;
+	my ($fh, $data);
+
+	open($fh, '<', $file);
+	binmode($fh);
+	read($fh, $data, $self->{config}->{read_size});
+	close($fh);
+
+	return sha1_hex($data);
+}
+
+sub hash_in_db {
+	my ($self, $hash) = @_;
+
+	if ($self->{ignored}->{hashes}) {
+		for my $ihash (@{$self->{ignored}->{hashes}}) {
+			if ($hash eq $ihash) {
+				return '// ignored';
+			}
+		}
+	}
+
+	for my $name ($self->files()) {
+		my $file = $self->file($name);
+
+		if ($file->{hash} eq $hash) {
+			return $name;
+		}
+	}
+	return undef;
+}
+
+sub file_in_db {
+	my ($self, $file) = @_;
+
+	return $self->hash_in_db($self->hash_file($file));
+}
+
+sub read_size {
+	my ($self) = @_;
+	return $self->{config}->{read_size};
+}
+
+sub file {
+	my ($self, $name) = @_;
+	return $self->{files}->{$name};
+}
+
+sub delete_file {
+	my ($self, $name) = @_;
+	delete $self->{files}->{$name};
+}
+
+sub files {
+	my ($self) = @_;
+	return sort keys %{ $self->{files} };
+}
+
+sub add_file {
+	my ($self, $name, $data) = @_;
+	$self->{files}->{$name} = $data;
+}
+
+sub ignored {
+	my ($self) = @_;
+	if (exists $self->{ignored}->{hashes}) {
+		return @{ $self->{ignored}->{hashes} };
+	}
+	else {
+		return ();
+	}
+}
+
+sub ignore {
+	my ($self, $file) = @_;
+
+	push(@{ $self->{ignored}->{hashes} }, $file);
+}
+
+sub save {
+	my ($self, $file) = @_;
+	nstore($self, $file);
+}
+
+1;
+
+__END__
+
+=head1 NAME
+
+=head1 SYNOPSIS
+
+=head1 DESCRIPTION
+
+=head1 METHODS
+
+=over
+
+=back
+
+=head1 DEPENDENCIES
+
+=head1 SEE ALSO
+
+=head1 AUTHOR
+
+Copyright (C) 2011 by Daniel Friesel E<lt>derf@finalrewind.orgE<gt>
+
+=head1 LICENSE
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.