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package App::ArchLinux::PackagerTools::CPAN;
use strictures;
use autodie;
use CPAN::DistnameInfo;
use CPANPLUS::Backend;
use Carp;
use Function::Parameters;
use IO::Zlib;
use Log::Any qw($log);
use Syntax::Keyword::Try;
use version;
=head1 NAME
App::ArchLinux::PackagerTools::CPAN - Methods to interact with CPAN
=head1 SYNOPSIS
use App::ArchLinux::PackagerTools::CPAN;
# synopsis...
=head1 DESCRIPTION
# longer description...
=head1 METHODS
=head2 new
App::ArchLinux::PackagerTools::CPAN->new();
Returns a new instance.
=cut
method new($class: $deps = {}) {
$deps->{cpanplus_backend} //= CPANPLUS::Backend->new();
return $class->new_no_defaults($deps);
}
method new_no_defaults($class: $deps = {}) {
my $self = {};
bless $self, $class;
$self->{deps} = $deps;
$self->{dist_lc_map} = {};
$self->{dists} = {};
$self->_build_dist_index();
return $self;
}
=head2 Public Methods
=head3 is_newer_version_available
Return 1 if a newer version of the distribution is available, 0 otherwise.
=cut
method is_newer_version_available($dist_name, $version) {
my $dist = $self->get_dist($dist_name);
# TODO compare versions rather than not-equal check
my $dist_version = version->parse($dist->{version});
if ($dist_version > version->parse($version)) {
return 1;
} else {
return 0;
}
}
method _build_dist_index() {
$self->{deps}->{cpanplus_backend}->reload_indices();
# TODO download pacakges list ourselves instead of using cpanplus for it? We may need cpanplus for other features later so keeping it is probably also fine.
my $packages_file = "$ENV{HOME}/.cpanplus/02packages.details.txt.gz";
my $fh = IO::Zlib->new($packages_file, 'r');
my %seen;
my $line_number = 0;
while (<$fh>) {
# skip meta info (first 9 lines)
next if $line_number++ < 9;
#$log->tracef("Parsing line: %s", $_);
my ($module_name, $module_version, $file) = split /\s+/;
next if $seen{$file}++ > 0;
my $dist = CPAN::DistnameInfo->new($file);
if (!defined $dist->{dist}) {
$log->debugf("Failed to parse file: %s", $file);
next;
}
my $dist_name = $dist->{dist};
my $dist_name_lc = lc($dist_name);
my $dist_version;
try {
$dist_version = version->parse($dist->{version});
} catch {
$log->debugf("Skipping dist with invalid version: %s", $@);
$log->debugf("Skipped dist is: %s", $dist);
next;
}
my $index_dist;
my $index_version = version->parse($self->{dists}->{$dist_name}->{version});
my $index_name = $self->{dist_lc_map}->{$dist_name_lc};
$index_dist = $self->{dists}->{$index_name} if defined $index_name;
if (!defined($index_dist)
|| (defined($index_dist) && $index_name eq $dist_name && $dist_version > $index_version)
) {
$self->{dist_lc_map}->{$dist_name_lc} = $dist_name;
$self->{dists}->{$dist_name} = {
dist_name => $dist_name,
version => $dist->{version},
};
} else {
if ($dist_name ne $index_name && $dist_version < $index_version) {
confess $log->errorf("Key '%s' already exists in lc_map. This requires a manual exception to map correctly.\nExisting: %s\nCurrent: %s", $dist_name_lc, $index_dist, {$dist->%{qw(dist version)}});
}
}
}
}
method search_dist($name) {
$name =~ s/::/-/g;
$log->tracef("Searching for CPAN distribution matching '%s'", $name);
my $index_name = $self->{dist_lc_map}->{lc($name)};
if (defined $index_name) {
return $self->{dists}->{$index_name};
}
return;
}
method get_dist($dist_name) {
$dist_name =~ s/::/-/g;
$log->tracef("Getting CPAN data for distribution '%s'", $dist_name);
my $index_name = $self->{dist_lc_map}->{lc($dist_name)};
if (defined $index_name) {
return $self->{dists}->{$index_name};
}
croak $log->errorf("Failed to find distribution with name %s", $dist_name);
}
1;
__END__
|
