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package Carton::Packer;
use Class::Tiny;
use warnings NONFATAL => 'all';
use App::FatPacker;
use File::pushd ();
use Path::Tiny ();
use CPAN::Meta ();
use File::Find ();
sub fatpack_carton {
my($self, $dir) = @_;
my $temp = Path::Tiny->tempdir;
my $pushd = File::pushd::pushd $temp;
my $file = $temp->child('carton.pre.pl');
$file->spew(<<'EOF');
#!/usr/bin/env perl
use strict;
use 5.008001;
use Carton::CLI;
$Carton::Fatpacked = 1;
exit Carton::CLI->new->run(@ARGV);
EOF
my $fatpacked = $self->do_fatpack($file);
my $executable = $dir->child('carton');
warn "Bundling $executable\n";
$dir->mkpath;
$executable->spew($fatpacked);
chmod 0755, $executable;
}
sub do_fatpack {
my($self, $file) = @_;
my $packer = App::FatPacker->new;
my @modules = split /\r?\n/, $packer->trace(args => [$file], use => $self->required_modules);
my @packlists = $packer->packlists_containing(\@modules);
$packer->packlists_to_tree(Path::Tiny->new('fatlib')->absolute, \@packlists);
my $fatpacked = do {
local $SIG{__WARN__} = sub {};
$packer->fatpack_file($file);
};
# HACK: File::Spec bundled into arch in < 5.16, but is loadable as pure-perl
use Config;
$fatpacked =~ s/\$fatpacked{"$Config{archname}\/(Cwd|File)/\$fatpacked{"$1/g;
$fatpacked;
}
sub required_modules {
my($self, $packer) = @_;
my $meta = $self->installed_meta('Carton')
or die "Couldn't find install metadata for Carton";
my %excludes = (
perl => 1,
'ExtUtils::MakeMaker' => 1,
'Module::Build' => 1,
);
my @requirements = grep !$excludes{$_},
$meta->effective_prereqs->requirements_for('runtime', 'requires')->required_modules;
return \@requirements;
}
sub installed_meta {
my($self, $dist) = @_;
my @meta;
my $finder = sub {
if (m!\b$dist-.*[\\/]MYMETA.json!) {
my $meta = CPAN::Meta->load_file($_);
push @meta, $meta if $meta->name eq $dist;
}
};
my @meta_dirs = grep -d, map "$_/.meta", @INC;
File::Find::find({ wanted => $finder, no_chdir => 1 }, @meta_dirs)
if @meta_dirs;
# return the latest version
@meta = sort { version->new($b->version) cmp version->new($a->version) } @meta;
return $meta[0];
}
1;
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