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package SlackBuild::Registry::Version;
use strict;
use warnings;
use Carp;
use SlackBuild::Base qw(major minor patch tail string:ro);
sub new {
my $class = shift;
my $self = bless {}, $class;
if (my $s = shift) {
croak "too many arguments" if @_;
$self->parse($s);
}
return $self;
}
sub major_number { shift->major || 0 };
sub minor_number { shift->minor || 0 };
sub patch_number { shift->patch || 0 };
sub tail_string { shift->tail || '' };
sub parse {
my ($self, $str) = @_;
$self->{string} = $str;
delete $self->{major};
delete $self->{minor};
delete $self->{patch};
delete $self->{tail};
if ($str =~ s/^(\d+)(.*)/$2/) {
$self->major($1);
if ($str =~ s/^\.(\d+)(.*)/$2/) {
$self->minor($1);
if ($str =~ s/^\.(\d+)(.*)/$2/) {
$self->patch($1);
}
}
}
$self->tail($str);
}
sub cmp {
my ($self, $other) = @_;
$other = __PACKAGE__->new($other) unless ref($other);
foreach my $part (map { "${_}_number" } qw(major minor patch)) {
if (my $d = $self->${\$part} <=> $other->${\$part}) {
return $d;
}
}
return $self->tail_string cmp $other->tail_string;
}
use overload
'""' => sub { shift->string },
'cmp' => sub {
my ($self, $other, $swap) = @_;
my $res = $self->cmp($other);
return $swap ? -$res : $res;
},
'<=>' => sub {
my ($self, $other, $swap) = @_;
my $res = $self->cmp($other);
return $swap ? -$res : $res;
},
'==' => sub {
my ($self, $other) = @_;
my $res = $self->cmp($other) == 0;
},
'!=' => sub {
my ($self, $other) = @_;
my $res = $self->cmp($other) != 0;
},
'<' => sub {
my ($self, $other, $swap) = @_;
my $res = $self->cmp($other) < 0;
return $swap ? !$res : $res;
},
'<=' => sub {
my ($self, $other, $swap) = @_;
my $res = $self->cmp($other) <= 0;
return $swap ? !$res : $res;
},
'>' => sub {
my ($self, $other, $swap) = @_;
my $res = $self->cmp($other) > 0;
return $swap ? !$res : $res;
},
'>=' => sub {
my ($self, $other, $swap) = @_;
my $res = $self->cmp($other) >= 0;
return $swap ? !$res : $res;
};
1;
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