use strict;
use warnings;
-our $VERSION = '0.08';
+=head1 NAME
+
+CPANPLUS::Dist::Gentoo::Atom - Gentoo atom object.
+
+=head1 VERSION
+
+Version 0.10
+
+=cut
+
+our $VERSION = '0.10';
+
+=head1 DESCRIPTION
+
+This class models Gentoo atoms.
+
+=cut
use Carp ();
use Scalar::Util ();
use overload (
- '<=>' => \&cmp,
- '""' => \&as_string,
+ '<=>' => \&_spaceship,
+ 'cmp' => \&_cmp,
+ '""' => \&_stringify,
);
use CPANPLUS::Dist::Gentoo::Version;
my $version_rx = $CPANPLUS::Dist::Gentoo::Version::version_rx;
+=head1 METHODS
+
+=head2 C<< new category => $category, name => $name [, version => $version, range => $range, ebuild => $ebuild ] >>
+
+Creates a new L<CPANPLUS::Dist::Gentoo::Atom> object from the supplied C<$category>, C<$name>, C<$version>, C<$range> and C<$ebuild>.
+
+=cut
+
sub new {
my $class = shift;
$class = ref($class) || $class;
my %args = @_;
- my ($name, $category, $version);
+ my ($range, $category, $name, $version);
if (defined $args{name}) {
- ($name, $category, $version) = @args{qw/name category version/};
+ ($range, $category, $name, $version) = @args{qw/range category name version/};
Carp::confess('Category unspecified') unless defined $category;
/[^\w-]/ and Carp::confess('Invalid argument') for $name, $category;
} elsif (defined $args{atom}) {
my $atom = $args{atom};
- $atom =~ m{^([\w-]+)/([\w-]+)-v?($version_rx)$}
+ $atom =~ m{^(<|<=|=|>=|>)?([\w-]+)/([\w-]+)(?:-v?($version_rx))?$}
or Carp::confess('Invalid atom');
- ($name, $category, $version) = ($1, $2, $3);
- } elsif (defined $args{ebuild}) {
- my $ebuild = $args{ebuild};
- $ebuild =~ m{/([\w-]+)/([\w-]+)-v?($version_rx)\.ebuild$}
- or Carp::confess('Invalid ebuild');
- ($name, $category, $version) = ($1, $2, $3);
+ ($range, $category, $name, $version) = ($1, $2, $3, $4);
} else {
Carp::confess('Not enough information for building an atom object');
}
}
}
- Carp::confess('Minimum atoms require a valid version') if not defined $version
- and $args{minimum};
+ if (defined $version) {
+ if (defined $range) {
+ Carp::confess("Invalid range $range")
+ unless grep $range eq $_, qw|< <= = >= >|;
+ } else {
+ $range = '>=';
+ }
+ } else {
+ Carp::confess('Range atoms require a valid version')
+ if defined $range and length $range;
+ }
bless {
category => $category,
name => $name,
version => $version,
- minimum => $args{minimum},
+ range => $range,
ebuild => $args{ebuild},
}, $class;
}
+=head2 C<new_from_ebuild $ebuild>
+
+Creates a new L<CPANPLUS::Dist::Gentoo::Atom> object by inferring the category, name and version from the given C<$ebuild>
+
+=cut
+
+sub new_from_ebuild {
+ my $class = shift;
+ $class = ref($class) || $class;
+
+ my $ebuild = shift;
+ $ebuild = '' unless defined $ebuild;
+
+ $ebuild =~ m{/([\w-]+)/([\w-]+)/\2-v?($version_rx)\.ebuild$}
+ or Carp::confess('Invalid ebuild');
+ my ($category, $name, $version) = ($1, $2, $3);
+
+ return $class->new(
+ category => $category,
+ name => $name,
+ version => $version,
+ ebuild => $ebuild,
+ );
+}
+
BEGIN {
- eval "sub $_ { \$_[0]->{$_} }" for qw/category name version minimum ebuild/;
+ eval "sub $_ { \$_[0]->{$_} }" for qw/category name version range ebuild/;
}
-sub cmp {
+=head2 C<category>
+
+Read-only accessor to the atom category.
+
+=head2 C<name>
+
+Read-only accessor to the atom name.
+
+=head2 C<version>
+
+Read-only accessor to the L<CPANPLUS::Dist::Gentoo::Version> object associated with the atom.
+
+=head2 C<range>
+
+Read-only accessor to the atom range.
+
+=head2 C<ebuild>
+
+Read-only accessor to the path of an optional ebuild associated with the atom.
+
+=head2 C<qualified_name>
+
+Returns the qualified name for the atom, i.e. C<$category/$name>.
+
+=cut
+
+sub qualified_name { join '/', $_[0]->category, $_[0]->name }
+
+sub _spaceship {
my ($a1, $a2, $r) = @_;
my $v1 = $a1->version;
my $v2;
- if (Scalar::Util::blessed($a2) and $a2->isa(__PACKAGE__)) {
- Carp::confess('Can\'t compare atoms of different packages')
- if $a1->category ne $a2->category or $a1->name ne $a2->name;
+ my $blessed = Scalar::Util::blessed($a2);
+ unless ($blessed and $a2->isa(__PACKAGE__)) {
+ if ($blessed and $a2->isa('CPANPLUS::Dist::Gentoo::Version')) {
+ $v2 = $a2;
+ $a2 = undef;
+ } else {
+ my $maybe_atom = eval { __PACKAGE__->new(atom => $a2) };
+ if (my $err = $@) {
+ $v2 = eval { CPANPLUS::Dist::Gentoo::Version->new($a2) };
+ Carp::confess("Can't compare an atom against something that's not an atom, an atom string ($err), a version or a version string ($@)") if $@;
+ $a2 = undef;
+ } else {
+ $a2 = $maybe_atom;
+ }
+ }
+ }
+
+ if (defined $a2) {
$v2 = $a2->version;
- } else {
- $v2 = $a2;
+
+ my $p1 = $a1->qualified_name;
+ my $p2 = $a2->qualified_name;
+ Carp::confess("Atoms for different packages $p1 and $p2") unless $p1 eq $p2;
}
($v1, $v2) = ($v2, $v1) if $r;
+ return (defined $v1 or 0) <=> (defined $v2 or 0) unless defined $v1
+ and defined $v2;
+
return $v1 <=> $v2;
}
-sub as_string {
+sub _cmp {
+ my ($a1, $a2, $r) = @_;
+
+ my $s1 = $a1->qualified_name;
+ my $v1 = $a1->version;
+ $s1 .= "-$v1" if defined $v1;
+
+ my $s2;
+ if (Scalar::Util::blessed($a2) and $a2->isa(__PACKAGE__)) {
+ $s2 = $a2->qualified_name;
+ my $v2 = $a2->version;
+ $s2 .= "-$v2" if defined $v2;
+ } else {
+ $s2 = $a2;
+ }
+
+ $s1 cmp $s2;
+}
+
+sub _stringify {
my ($a) = @_;
- my $atom = $a->category . '/' . $a->name;
+ my $atom = $a->qualified_name;
my $version = $a->version;
- if (defined $version) {
- $atom = "=$atom-$version";
- $atom = ">$atom" if $a->minimum;
- }
+ $atom = $a->range . $atom . '-' . $version if defined $version;
return $atom;
}
+my %order = (
+ '<' => -2,
+ '<=' => -1,
+ '=' => 0,
+ '>=' => 1,
+ '>' => 2,
+);
+
+=head2 C<and @atoms>
+
+Compute the ranged atom representing the logical AND between C<@atoms> with the same category and name.
+
+=cut
+
+sub and {
+ shift unless length ref $_[0];
+
+ my $a1 = shift;
+ return $a1 unless @_;
+
+ my $a2 = shift;
+ $a2 = $a2->and(@_) if @_;
+
+ my $p1 = $a1->qualified_name;
+ my $p2 = $a2->qualified_name;
+ Carp::confess("Atoms for different packages $p1 and $p2") unless $p1 eq $p2;
+
+ my $v1 = $a1->version;
+ return $a2 unless defined $v1;
+ my $r1 = $a1->range; # Defined if $v1 is defined
+
+ my $v2 = $a2->version;
+ return $a1 unless defined $v2;
+ my $r2 = $a2->range; # defined if $v2 is defined
+
+ my $o1 = $order{$r1};
+ my $o2 = $order{$r2};
+
+ Carp::confess("Incompatible ranges $r1$p1 and $r2$p2") if $o1 * $o2 < 0;
+
+ if ($r2 eq '=') {
+ ($a1, $a2) = ($a2, $a1);
+ ($v1, $v2) = ($v2, $v1);
+ ($r1, $r2) = ($r2, $r1);
+ ($o1, $o2) = ($o2, $o1);
+ }
+
+ if ($r1 eq '=') {
+ my $r = $r2 eq '=' ? '==' : $r2;
+ Carp::confess("Version mismatch $v1 $r $v2") unless eval "\$a1 $r \$a2";
+ return $a1;
+ } elsif ($o1 > 0) {
+ return $a1 < $a2 ? $a2 : $a1;
+ } else {
+ return $a1 < $a2 ? $a1 : $a2;
+ }
+}
+
+=head2 C<fold @atoms>
+
+Returns a list built from C<@atoms> but where there's only one atom for a given category and name.
+
+=cut
+
sub fold {
shift unless length ref $_[0];
my %seen;
for my $atom (@_) {
- my ($category, $name, $version) = map $atom->$_, qw/category name version/;
- my $key = join '/', $category, $name;
+ my $key = $atom->qualified_name;
+
my $cur = $seen{$key};
+ $seen{$key} = defined $cur ? $cur->and($atom) : $atom;
+ }
- unless (defined $cur) {
- $seen{$key} = $atom;
- next;
- }
+ return values %seen;
+}
- next unless defined $version;
+=pod
- if (not defined $cur->version) {
- $seen{$key} = $atom;
- next;
- }
+This class provides overloaded methods for numerical comparison, string comparison and strigification.
- if ($atom->minimum) {
- if ($cur->minimum) {
- $seen{$key} = $atom < $cur ? $cur : $atom;
- } else {
- Carp::confess('Version mismatch') if $atom > $cur;
- }
- } elsif ($cur->minimum) {
- Carp::confess('Version mismatch') if $cur > $atom;
- }
- }
+=head1 SEE ALSO
- return values %seen;
-}
+L<CPANPLUS::Dist::Gentoo>, L<CPANPLUS::Dist::Gentoo::Version>.
+
+=head1 AUTHOR
+
+Vincent Pit, C<< <perl at profvince.com> >>, L<http://www.profvince.com>.
+
+You can contact me by mail or on C<irc.perl.org> (vincent).
+
+=head1 BUGS
+
+Please report any bugs or feature requests to C<bug-cpanplus-dist-gentoo at rt.cpan.org>, or through the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=CPANPLUS-Dist-Gentoo>.
+I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.
+
+=head1 SUPPORT
+
+You can find documentation for this module with the perldoc command.
+
+ perldoc CPANPLUS::Dist::Gentoo
+
+=head1 COPYRIGHT & LICENSE
+
+Copyright 2009,2010 Vincent Pit, all rights reserved.
+
+This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
+
+=cut
-1;
+1; # End of CPANPLUS::Dist::Gentoo::Atom
projects / perl / modules / CPANPLUS-Dist-Gentoo.git / blobdiff