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Mojo.pm

package Alien::Build::Plugin::Decode::Mojo;

use strict;
use warnings;
use 5.008004;
use Alien::Build::Plugin;

# ABSTRACT: Plugin to extract links from HTML using Mojo::DOM or Mojo::DOM58
our $VERSION = '2.80'; # VERSION

sub _load ($;$)
{
  my($class, $version) = @_;
  my $pm = "$class.pm";
  $pm =~ s/::/\//g;
  eval { require $pm };
  return 0 if $@;
  if(defined $version)
  {
    eval { $class->VERSION($version) };
    return 0 if $@;
  }
  return 1;
}

has _class => sub {
  return 'Mojo::DOM58' if _load 'Mojo::DOM58';
  return 'Mojo::DOM'   if _load 'Mojo::DOM' and _load 'Mojolicious', 7.00;
  return 'Mojo::DOM58';
};

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

$meta->add_requires('share' => 'URI' => 0);
  $meta->add_requires('share' => 'URI::Escape' => 0);

my $class = $meta->prop->{plugin_decode_mojo_class} ||= $self->_class;

if($class eq 'Mojo::DOM58')
  {
    $meta->add_requires('share' => 'Mojo::DOM58' => '1.00');
  }
  elsif($class eq 'Mojo::DOM')
  {
    $meta->add_requires('share' => 'Mojolicious' => '7.00');
    $meta->add_requires('share' => 'Mojo::DOM'   => '0');
  }
  else
  {
    die "bad class";
  }

$meta->register_hook( decode => sub {
    my(undef, $res) = @_;

die "do not know how to decode @{[ $res->{type} ]}"
      unless $res->{type} eq 'html';

my $dom = $class->new($res->{content});

my $base = URI->new($res->{base});

if(my $base_element = $dom->find('head base')->first)
    {
      my $href = $base_element->attr('href');
      $base = URI->new($href) if defined $href;
    }

my @list = map {
                 my $url = URI->new_abs($_, $base);
                 my $path = $url->path;
                 $path =~ s{/$}{}; # work around for Perl 5.8.7- gh#8
                 {
                   filename => URI::Escape::uri_unescape(File::Basename::basename($path)),
                   url      => URI::Escape::uri_unescape($url->as_string),
                 }
               }
               grep !/^\.\.?\/?$/,
               map { $_->attr('href') || () }
               @{ $dom->find('a')->to_array };

return {
      type => 'list',
      list => \@list,
    };
  })

}

__END__

=pod

=encoding UTF-8

=head1 NAME

Alien::Build::Plugin::Decode::Mojo - Plugin to extract links from HTML using Mojo::DOM or Mojo::DOM58

=head1 VERSION

version 2.80

=head1 SYNOPSIS

use alienfile;
 plugin 'Decode::Mojo';

Force using C<Decode::Mojo> via the download negotiator:

use alienfile 1.68;
 
 configure {
   requires 'Alien::Build::Plugin::Decode::Mojo';
 };
 
 plugin 'Download' => (
   ...
   decoder => 'Decode::Mojo',
 );

=head1 DESCRIPTION

Note: in most cases you will want to use L<Alien::Build::Plugin::Download::Negotiate>
instead.  It picks the appropriate decode plugin based on your platform and environment.
In some cases you may need to use this plugin directly instead.

This plugin decodes an HTML file listing into a list of candidates for your Prefer plugin.
It works just like L<Alien::Build::Plugin::Decode::HTML> except it uses either L<Mojo::DOM>
or L<Mojo::DOM58> to do its job.

This plugin is much lighter than The C<Decode::HTML> plugin, and doesn't require XS.  It
is the default decode plugin used by L<Alien::Build::Plugin::Download::Negotiate> if it
detects that you need to parse an HTML index.

=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 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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