Make 'ebuild' a normal accessor for C::D::G::Atom objects

[perl/modules/CPANPLUS-Dist-Gentoo.git] / lib / CPANPLUS / Dist / Gentoo / Atom.pm

diff --git a/lib/CPANPLUS/Dist/Gentoo/Atom.pm b/lib/CPANPLUS/Dist/Gentoo/Atom.pm
index b017e6be25be43e6e26014ab7ac07dc04621ac63..543693e5ab7b8471dfdf10d1f73870fea153074c 100644 (file)
--- a/lib/CPANPLUS/Dist/Gentoo/Atom.pm
+++ b/lib/CPANPLUS/Dist/Gentoo/Atom.pm
@@ -9,8 +9,9 @@ use Carp         ();
 use Scalar::Util ();
 
 use overload (
- '<=>' => \&cmp,
- '""'  => \&as_string,
+ '<=>' => \&_spaceship,
+ 'cmp' => \&_cmp,
+ '""'  => \&_stringify,
 );
 
 use CPANPLUS::Dist::Gentoo::Version;
@@ -23,21 +24,16 @@ sub new {
 
  my %args = @_;
 
- my ($name, $category, $version);
+ my ($category, $name, $version);
  if (defined $args{name}) {
-  ($name, $category, $version) = @args{qw/name category version/};
+  ($category, $name, $version) = @args{qw/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)$}
                                                or Carp::confess('Invalid atom');
-  ($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, $3);
+  ($category, $name, $version) = ($1, $2, $3);
  } else {
   Carp::confess('Not enough information for building an atom object');
  }
@@ -49,18 +45,54 @@ sub new {
   }
  }
 
+ my $range = $args{range};
+ 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  => $name,
+  version  => $version,
+  range    => $range,
+  ebuild   => $args{ebuild},
  }, $class;
 }
 
+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/;
+ eval "sub $_ { \$_[0]->{$_} }" for qw/category name version range ebuild/;
 }
 
-sub cmp {
+sub qualified_name { join '/', $_[0]->category, $_[0]->name }
+
+sub _spaceship {
  my ($a1, $a2, $r) = @_;
 
  my $v1 = $a1->version;
@@ -79,10 +111,98 @@ sub cmp {
  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) = @_;
 
- $a->category . '/' . $a->name . '-' . $a->version;
+ my $atom = $a->qualified_name;
+
+ my $version = $a->version;
+ $atom = $a->range . $atom . '-' . $version if defined $version;
+
+ return $atom;
+}
+
+my %order = (
+ '<'  => -2,
+ '<=' => -1,
+  '=' =>  0,
+ '>=' =>  1,
+ '>'  =>  2,
+);
+
+sub and {
+ shift unless length ref $_[0];
+
+ my $a1 = shift;
+ 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;
+ }
+}
+
+sub fold {
+ shift unless length ref $_[0];
+
+ my %seen;
+ for my $atom (@_) {
+  my $key = $atom->qualified_name;
+
+  my $cur = $seen{$key};
+  $seen{$key} = defined $cur ? $cur->and($atom) : $atom;
+ }
+
+ return values %seen;
 }
 
 1;