File Coverage

blib/lib/Software/License/PD.pm

Criterion	Covered	Total	%
statement	17	19	89.4
branch			n/a
condition	6	9	66.6
subroutine	8	10	80.0
pod	4	4	100.0
total	35	42	83.3

use strict;
use warnings;

package Software::License::PD;
# ABSTRACT: Public Domain pseudo-license
$Software::License::PD::VERSION = '1.002'; # TRIAL
use base 'Software::License';

require Software::License::MIT;
require Software::License::GPL_3;
require Software::License::Artistic_2_0;


sub name { 'Public Domain pseudo-license (GPL, Artistic, MIT or PD)' }
sub url  { 'http://edwardsamuels.com/copyright/beyond/articles/public.html' }
sub meta_name  { 'unrestricted' }
sub meta2_name { 'unrestricted' }

sub _mit {
  my ($self) = @_;
  return $self->{_mit} ||= Software::License::MIT->new({
    year   => $self->year,
    holder => $self->holder,
  });
}

sub _gpl {
  my ($self) = @_;
  return $self->{_gpl} ||= Software::License::GPL_3->new({
    year   => $self->year,
    holder => $self->holder,
  });
}

sub _tal {
  my ($self) = @_;
  return $self->{_tal} ||= Software::License::Artistic_2_0->new({
    year   => $self->year,
    holder => $self->holder,
  });
}

1;

=pod

=head1 NAME

Software::License::PD - Public Domain pseudo-license

=head1 VERSION

version 1.002

=head1 DESCRIPTION

In legal circles, B is defined as the absence of B
(and therefore precludes the need for any B). Artistic works enter
the Public Domain in two common situations:

=over

=item 1

Where the work carries no license or copyright information, and precedes
the ratification of the I
and Artistic Works>; or

=item 2

Where the term of copyright has lapsed, the length of which varies between
jurisdictions

=back

Some authors have chosen to disclaim all rights to their works and release it
into the Public Domain, which is ideal when authors want to ensure that their
work can be used without any restrictions whatsoever.  However, the notion of
relinquishing work into the Public Domain can be contentious in some cases,
since some jurisdictions may not recognize an author's prerogative to disclaim
all rights to their own work.  In European countries, for example, authors can
abandon their claim to copyright, but not reputation rights (which prevent
people from removing your name from your work, among other things).

While I have researched the issue to some extent, I am not a lawyer and am
not qualified to provide legal advice.  I have used this license for some of
my own packages, but am unsure whether it would stand up in a court of law.

=encoding utf8

=head1 USAGE

This module can be used with L simply by specifying:

    ; authordep Software::License::PD
    license = PD

in your C file.

=head1 WHY NOT CREATIVE COMMONS ZERO?

The B (CC0) license is an extremely liberal license,
which confers rights similar to Public Domain to the extent permissible by
law. However, Creative Commons does not recommend the application of their
licenses to software, see: L
software?|https://wiki.creativecommons.org/wiki/Frequently_Asked_Questions#Can_I_apply_a_Creative_Commons_license_to_software.3F>

=head1 NOTABLE PROJECTS

Several notable Open Source software projects have been released into the
Public Domain, including:

=over

=item *

L, a popular embedded database library included
in many other projects, both open source and proprietary

=item *

L, a small DNS server used in many
embedded devices, along with L
Daniel J. Bernstein|http://cr.yp.to/distributors.html>

=item *

L

=item *

L, as well as the L
implementation|http://burtleburtle.net/bob/rand/isaacafa.html>

=back

=head1 SEE ALSO

=over

=item *

The L
Works|http://wipo.int/treaties/en/ip/berne/index.html>, which provides
automatic internationalised copyright ownership for authors of artistic
works.

=item *

Edward Samuels' exploration of L
Law|http://edwardsamuels.com/copyright/beyond/articles/public.html>,
which describes the nature of copyright and the mechanisms under which
works can enter the public domain (e.g. through expiration or forfeiture
of copyright, or non-copyrightable works.)

=item *

Daniel J. Bernstein's examination, L
domain|http://cr.yp.to/publicdomain.html>

=item *

L, a copyright waiver statement

=item *

L
project|https://softwarefreedom.org/resources/2012/ManagingCopyrightInformation.html>,
published by the Software Freedom Law Center

=back

=head1 AUTHOR

Jonathan Yu

=head1 COPYRIGHT AND LICENSE

Legally speaking, this package and its contents are:

  Copyright (c) 2015 by Jonathan Yu .

But this is really just a legal technicality that allows the author to
offer this package under the public domain and also a variety of licensing
options. For all intents and purposes, this is public domain software,
which means you can do whatever you want with it.

The software is provided "AS IS", without warranty of any kind, express or
implied, including but not limited to the warranties of merchantability,
fitness for a particular purpose and noninfringement. In no event shall the
authors or copyright holders be liable for any claim, damages or other
liability, whether in an action of contract, tort or otherwise, arising from,
out of or in connection with the software or the use or other dealings in
the software.

=cut

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