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# Copyright (c) 1997-2024
# Ewgenij Gawrilow, Michael Joswig, and the polymake team
# Technische Universität Berlin, Germany
# https://polymake.org
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version: http://www.gnu.org/licenses/gpl.txt.
#
# 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 General Public License for more details.
#-------------------------------------------------------------------------------
#
# Creation and reading tarballs containing polymake Objects
use Archive::Tar;
# usage: pack_tarball("tarfilename", Object, ...);
sub pack_tarball {
my $filename = shift;
replace_special_paths($filename);
my $compressed = true;
if ($filename =~ /\.tar$/) {
$compressed = false;
} elsif ($filename !~ /\.(?:tar\.gz|tgz)$/) {
$filename .= ".tar.gz";
}
my $ar = new Archive::Tar();
my $unnamed = "unnamed_0";
foreach my $object (@_) {
$ar->add_data(($object->name // ++$unnamed) . "." . $object->default_file_suffix,
encode_json(Core::Serializer::serialize($object)));
}
$ar->write($filename, $compressed);
}
# usage: @object_list = unpack_tarball("tarfilename", "name", ...);
# "name" arguments are optional; they constrain the output to archive members matching the given names.
sub unpack_tarball {
my $filename = shift;
replace_special_paths($filename);
my $compressed = $filename =~ /\.(?:tar\.gz|tgz)$/;
my $ar = new Archive::Tar($filename, $compressed);
if (my @files = $ar->get_files(@_)) {
map { Core::Datafile::from_string($_->get_content) } @files;
} else {
die "no matching archive members found\n";
}
}
# Local Variables:
# mode: perl
# cperl-indent-level:3
# indent-tabs-mode:nil
# End:
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