use Path::Tiny;
use App::Licensecheck;
my $tempfile = Path::Tiny->tempfile;
$tempfile->spew(<<EOF);
# Dummy file simply stating some copyright and license.
# Copyright (C) 2020, 2022 Foo Bar.
#
# This file is licensed under version 2 or later of the GPL.
EOF
my $app = App::Licensecheck->new( top_lines => 0 ); # Parse whole files
my @output = $app->parse($tempfile);
my $license = $output[0]; # => is "GPL-2.0-or-later"
my $copyrights = $output[1]; # => is "2020, 2022 Foo Bar."
Copyright © 2007, 2008 Adam D. Barratt Copyright © 2012 Francesco Poli Copyright © 2016-2022 Jonas Smedegaard Copyright © 2017-2022 Purism SPC
This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.