1 package CPANPLUS::Dist::Gentoo::Atom;
8 CPANPLUS::Dist::Gentoo::Atom - Gentoo atom object.
16 our $VERSION = '0.12';
20 This class models Gentoo atoms.
28 '<=>' => \&_spaceship,
33 use CPANPLUS::Dist::Gentoo::Version;
35 my $range_rx = qr/(?:<|<=|=|>=|>)/;
36 my $name_rx = qr/[a-zA-Z0-9_+-]+/;
37 my $category_rx = $name_rx;
38 my $version_rx = $CPANPLUS::Dist::Gentoo::Version::version_rx;
44 # Infer everything from $atom :
45 my $cdga = CPANPLUS::Dist::Gentoo::Atom->new(
51 # Or specify the attributes manually :
52 my $cdga = CPANPLUS::Dist::Gentoo::Atom->new(
53 category => $category,
61 Creates a new L<CPANPLUS::Dist::Gentoo::Atom> object from the supplied C<$category>, C<$name>, C<$version>, C<$range> and C<$ebuild>.
67 $class = ref($class) || $class;
71 my ($range, $category, $name, $version);
72 if (defined $args{name}) {
73 ($range, $category, $name, $version) = @args{qw<range category name version>};
74 Carp::confess('Category unspecified') unless defined $category;
75 Carp::confess('Invalid category') unless $category =~ /^$category_rx$/o;
76 Carp::confess('Invalid name') unless $name =~ /^$name_rx$/o;
77 } elsif (defined $args{atom}) {
78 my $atom = $args{atom};
79 $atom =~ m{^($range_rx)?($category_rx)/($name_rx)(?:-($version_rx))?$}o
80 or Carp::confess('Invalid atom');
81 ($range, $category, $name, $version) = ($1, $2, $3, $4);
83 Carp::confess('Not enough information for building an atom object');
86 if (defined $version) {
87 unless (Scalar::Util::blessed($version)
88 and $version->isa('CPANPLUS::Dist::Gentoo::Version')) {
89 $version = CPANPLUS::Dist::Gentoo::Version->new($version);
93 if (defined $version) {
95 Carp::confess("Invalid range $range") unless $range =~ /^$range_rx$/o;
100 Carp::confess('Range atoms require a valid version')
101 if defined $range and length $range;
105 category => $category,
109 ebuild => $args{ebuild},
113 =head2 C<new_from_ebuild>
115 my $cdga = CPANPLUS::Dist::Gentoo::Atom->new_from_ebuild($ebuild);
117 Creates a new L<CPANPLUS::Dist::Gentoo::Atom> object by inferring the category, name and version from the given C<$ebuild>
121 sub new_from_ebuild {
123 $class = ref($class) || $class;
126 $ebuild = '' unless defined $ebuild;
128 $ebuild =~ m{/($category_rx)/($name_rx)/\2-($version_rx)\.ebuild$}o
129 or Carp::confess('Invalid ebuild');
130 my ($category, $name, $version) = ($1, $2, $3);
133 category => $category,
141 eval "sub $_ { \$_[0]->{$_} }" for qw<category name version range ebuild>;
146 Read-only accessor to the atom category.
150 Read-only accessor to the atom name.
154 Read-only accessor to the L<CPANPLUS::Dist::Gentoo::Version> object associated with the atom.
158 Read-only accessor to the atom range.
162 Read-only accessor to the path of an optional ebuild associated with the atom.
164 =head2 C<qualified_name>
166 Returns the qualified name for the atom, i.e. C<$category/$name>.
170 sub qualified_name { join '/', $_[0]->category, $_[0]->name }
173 my ($a1, $a2, $r) = @_;
175 my $v1 = $a1->version;
178 my $blessed = Scalar::Util::blessed($a2);
179 unless ($blessed and $a2->isa(__PACKAGE__)) {
180 if ($blessed and $a2->isa('CPANPLUS::Dist::Gentoo::Version')) {
184 my $maybe_atom = eval { __PACKAGE__->new(atom => $a2) };
186 $v2 = eval { CPANPLUS::Dist::Gentoo::Version->new($a2) };
187 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 $@;
198 my $p1 = $a1->qualified_name;
199 my $p2 = $a2->qualified_name;
200 Carp::confess("Atoms for different packages $p1 and $p2") unless $p1 eq $p2;
203 ($v1, $v2) = ($v2, $v1) if $r;
205 return (defined $v1 or 0) <=> (defined $v2 or 0) unless defined $v1
212 my ($a1, $a2, $r) = @_;
215 my $p1 = $a1->qualified_name;
217 unless (Scalar::Util::blessed($a2) && $a2->isa(__PACKAGE__)) {
218 $a2 = eval { __PACKAGE__->new(atom => $a2) };
219 Carp::confess("Can't compare an atom against something that's not an atom or an atom string ($@)") if $@;
221 my $p2 = $a2->qualified_name;
223 if (my $c = $p1 cmp $p2) {
224 return $r ? -$c : $c;
234 my $atom = $a->qualified_name;
236 my $version = $a->version;
237 $atom = $a->range . $atom . '-' . $version if defined $version;
252 my $cdga = CPANPLUS::Dist::Gentoo::Atom->and(@atoms);
254 Compute the ranged atom representing the logical AND between C<@atoms> with the same category and name.
259 shift unless length ref $_[0];
262 return $a1 unless @_;
265 $a2 = $a2->and(@_) if @_;
267 my $p1 = $a1->qualified_name;
268 my $p2 = $a2->qualified_name;
269 Carp::confess("Atoms for different packages $p1 and $p2") unless $p1 eq $p2;
271 my $v1 = $a1->version;
272 return $a2 unless defined $v1;
273 my $r1 = $a1->range; # Defined if $v1 is defined
275 my $v2 = $a2->version;
276 return $a1 unless defined $v2;
277 my $r2 = $a2->range; # defined if $v2 is defined
279 my $o1 = $order{$r1};
280 my $o2 = $order{$r2};
282 Carp::confess("Incompatible ranges $r1$p1 and $r2$p2") if $o1 * $o2 < 0;
285 ($a1, $a2) = ($a2, $a1);
286 ($v1, $v2) = ($v2, $v1);
287 ($r1, $r2) = ($r2, $r1);
288 ($o1, $o2) = ($o2, $o1);
292 my $r = $r2 eq '=' ? '==' : $r2;
293 Carp::confess("Version mismatch $v1 $r $v2") unless eval "\$a1 $r \$a2";
296 return $a1 < $a2 ? $a2 : $a1;
298 return $a1 < $a2 ? $a1 : $a2;
304 my @folded = CPANPLUS::Dist::Gentoo::Atom->fold(@atoms);
306 Returns a list built from C<@atoms> but where there's only one atom for a given category and name.
311 shift unless length ref $_[0];
315 my $key = $atom->qualified_name;
317 my $cur = $seen{$key};
318 $seen{$key} = defined $cur ? $cur->and($atom) : $atom;
321 return map $seen{$_}, sort keys %seen;
326 This class provides overloaded methods for numerical comparison, string comparison and stringification.
330 L<CPANPLUS::Dist::Gentoo>, L<CPANPLUS::Dist::Gentoo::Version>.
334 Vincent Pit, C<< <perl at profvince.com> >>, L<http://www.profvince.com>.
336 You can contact me by mail or on C<irc.perl.org> (vincent).
340 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>.
341 I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.
345 You can find documentation for this module with the perldoc command.
347 perldoc CPANPLUS::Dist::Gentoo
349 =head1 COPYRIGHT & LICENSE
351 Copyright 2009,2010,2011,2012 Vincent Pit, all rights reserved.
353 This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
357 1; # End of CPANPLUS::Dist::Gentoo::Atom