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usr/local/share/perl5/Alien/Build/Plugin/Prefer/_[ Not.Writable ]

File://usr/local/share/perl5/Alien/Build/Plugin/Prefer/BadVersion.pm

package Alien::Build::Plugin::Prefer::BadVersion;

use strict;
use warnings;
use 5.008004;
use Alien::Build::Plugin;
use Carp ();

# ABSTRACT: Plugin to filter out known bad versions
our $VERSION = '2.84'; # VERSION


has '+filter' => sub { Carp::croak("The filter property is required for the Prefer::BadVersion plugin") };

sub init
{
  my($self, $meta) = @_;

  $meta->add_requires('configure', __PACKAGE__, '1.05');

  my $filter;

  if(ref($self->filter) eq '')
  {
    my $string = $self->filter;
    $filter = sub {
      my($file) = @_;
      $file->{version} ne $string;
    };
  }
  elsif(ref($self->filter) eq 'ARRAY')
  {
    my %filter = map { $_ => 1 } @{ $self->filter };
    $filter = sub {
      my($file) = @_;
      ! $filter{$file->{version}};
    };
  }
  elsif(ref($self->filter) eq 'CODE')
  {
    my $code = $self->filter;
    $filter = sub { ! $code->($_[0]) };
  }
  else
  {
    Carp::croak("unknown filter type for Prefer::BadVersion");
  }

  $meta->around_hook(
    prefer => sub {
      my($orig, $build, @therest) = @_;
      my $res1 = $orig->($build, @therest);
      return $res1 unless $res1->{type} eq 'list';

      return {
        type => 'list',
        list => [
          grep { $filter->($_) } @{ $res1->{list} }
        ],
      };
    },
  );
}

1;

__END__

=pod

=encoding UTF-8

=head1 NAME

Alien::Build::Plugin::Prefer::BadVersion - Plugin to filter out known bad versions

=head1 VERSION

version 2.84

=head1 SYNOPSIS

 use alienfile;
 plugin 'Prefer::BadVersion' => '1.2.3';

=head1 DESCRIPTION

This plugin allows you to easily filter out known bad versions of libraries in a share install.
It doesn't affect a system install at all.  You need a Prefer plugin that filters and sorts files
first.  You may specify the filter in one of three ways:

=over

=item as a string

Filter out any files that match the given version.

 use alienfile;
 plugin 'Prefer::BadVersion' => '1.2.3';

=item as an array

Filter out all files that match any of the given versions.

 use alienfile;
 plugin 'Prefer::BadVersion' => [ '1.2.3', '1.2.4' ];

=item as a code reference

Filter out any files return a true value.

 use alienfile;
 plugin 'Prefer::BadVersion' => sub {
   my($file) = @_;
   $file->{version} eq '1.2.3'; # same as the string version above
 };

=back

This plugin can also be used to filter out known bad versions of a library on just one platform.
For example, if you know that version 1.2.3 if bad on windows, but okay on other platforms:

 use alienfile;
 plugin 'Prefer::BadVersion' => '1.2.3' if $^O eq 'MSWin32';

=head1 PROPERTIES

=head2 filter

Filter out entries that match the filter.

=head1 CAVEATS

If you are using the string or array mode, then you need an existing Prefer plugin that sets the
version number for each file candidate, such as L<Alien::Build::Plugin::Prefer::SortVersions>.

Unless you want to exclude the latest version from a share install, this plugin isn't really
that useful.  It has no effect on system installs, which may not be obvious at first.

=head1 SEE ALSO

=over 4

=item L<alienfile>

=item L<Alien::Build>

=item L<Alien::Build::Plugin::Prefer::SortVersions>

=back

=head1 AUTHOR

Author: Graham Ollis E<lt>plicease@cpan.orgE<gt>

Contributors:

Diab Jerius (DJERIUS)

Roy Storey (KIWIROY)

Ilya Pavlov

David Mertens (run4flat)

Mark Nunberg (mordy, mnunberg)

Christian Walde (Mithaldu)

Brian Wightman (MidLifeXis)

Zaki Mughal (zmughal)

mohawk (mohawk2, ETJ)

Vikas N Kumar (vikasnkumar)

Flavio Poletti (polettix)

Salvador Fandiño (salva)

Gianni Ceccarelli (dakkar)

Pavel Shaydo (zwon, trinitum)

Kang-min Liu (劉康民, gugod)

Nicholas Shipp (nshp)

Juan Julián Merelo Guervós (JJ)

Joel Berger (JBERGER)

Petr Písař (ppisar)

Lance Wicks (LANCEW)

Ahmad Fatoum (a3f, ATHREEF)

José Joaquín Atria (JJATRIA)

Duke Leto (LETO)

Shoichi Kaji (SKAJI)

Shawn Laffan (SLAFFAN)

Paul Evans (leonerd, PEVANS)

Håkon Hægland (hakonhagland, HAKONH)

nick nauwelaerts (INPHOBIA)

Florian Weimer

=head1 COPYRIGHT AND LICENSE

This software is copyright (c) 2011-2022 by Graham Ollis.

This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.

=cut

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