view release on metacpan or  search on metacpan

lib/AnyData2/Format/FileSystem.pm  view on Meta::CPAN

package AnyData2::Format::FileSystem;

use 5.008001;
use strict;
use warnings FATAL => 'all';

use base qw(AnyData2::Format);

use Carp 'croak';
use File::Spec ();

=head1 NAME

AnyData2::Format::FileSystem - FileSystem format class for AnyData2

=cut

our $VERSION = '0.002';

=head1 METHODS

=head2 new

  # pure
  my $af = AnyData2::Format::FileSystem->new(
    AnyData2::Storage::FileSystem->new( dirname => $ENV{HOME} )
  );

constructs a filesystem format

=cut

sub new
{
    my ( $class, $storage, %options ) = @_;
    my $self = $class->SUPER::new($storage);

    $self->{fs_cols} = [qw(entry dev ino mode nlink uid gid rdev size atime mtime ctime blksize blocks)];

    $self;
}

=head2 cols

Return column names

=cut

sub cols
{
    my $self = shift;
    defined $self->{fs_cols} or croak "Should not been here ...";
    $self->{fs_cols};
}

=head2 fetchrow

Fetch next directory entry and return name and stat values

=cut

sub fetchrow
{
    my $self  = shift;
    my $entry = $self->{storage}->read();
    defined $entry or return;
    my $fqpn = File::Spec->catfile( $self->{storage}->{dirname}, $entry );
    [ $entry, stat $fqpn ];
}

=head2 pushrow

No idea how this can be reasonable implemented

=cut

sub pushrow
{
    croak "read-only format ...";
}

=head1 LICENSE AND COPYRIGHT

Copyright 2015,2016 Jens Rehsack.

This program is free software; you can redistribute it and/or modify it
under the terms of either: the GNU General Public License as published
by the Free Software Foundation; or the Artistic License.

See http://dev.perl.org/licenses/ for more information.

If your Modified Version has been derived from a Modified Version made
by someone other than you, you are nevertheless required to ensure that
your Modified Version complies with the requirements of this license.

This license does not grant you the right to use any trademark, service