From: Vincent Pit <vince@profvince.com>
Date: Sun, 16 Aug 2009 19:01:44 +0000 (+0200)
Subject: Intuit the correct license from the DSLIP or the META file
X-Git-Tag: v0.08~10
X-Git-Url: http://git.vpit.fr/?p=perl%2Fmodules%2FCPANPLUS-Dist-Gentoo.git;a=commitdiff_plain;h=69b45a423d8ce50cc9c3cc8cb22a8822e698fb4f

Intuit the correct license from the DSLIP or the META file
---

diff --git a/MANIFEST b/MANIFEST
index 7e6be1b..64b73d6 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -10,6 +10,7 @@ samples/gengentooisms
 t/00-load.t
 t/11-maps-name.t
 t/12-maps-version.t
+t/13-maps-license.t
 t/91-pod.t
 t/92-pod-coverage.t
 t/95-portability-files.t
diff --git a/Makefile.PL b/Makefile.PL
index 1803ce3..9cb62fc 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -30,14 +30,15 @@ WriteMakefile(
     ABSTRACT_FROM    => 'lib/CPANPLUS/Dist/Gentoo.pm',
     PL_FILES         => {},
     PREREQ_PM        => {
-        'Carp'        => 0,
-        'CPANPLUS'    => 0,
-        'Cwd'         => 0,
-        'File::Copy'  => 0,
-        'File::Path'  => 0,
-        'File::Spec'  => 0,
-        'IPC::Cmd'    => 0,
-        'base'        => 0,
+        'Carp'              => 0,
+        'CPANPLUS'          => 0,
+        'Cwd'               => 0,
+        'File::Copy'        => 0,
+        'File::Path'        => 0,
+        'File::Spec'        => 0,
+        'IPC::Cmd'          => 0,
+        'Parse::CPAN::Meta' => 0,
+        'base'              => 0,
     },
     MIN_PERL_VERSION => 5.006,
     META_MERGE       => \%META,
diff --git a/lib/CPANPLUS/Dist/Gentoo.pm b/lib/CPANPLUS/Dist/Gentoo.pm
index 243253e..51f23d1 100644
--- a/lib/CPANPLUS/Dist/Gentoo.pm
+++ b/lib/CPANPLUS/Dist/Gentoo.pm
@@ -9,6 +9,7 @@ use File::Path ();
 use File::Spec;
 
 use IPC::Cmd qw/run can_run/;
+use Parse::CPAN::Meta ();
 
 use CPANPLUS::Error ();
 
@@ -264,7 +265,7 @@ sub prepare {
  $stat->src("mirror://cpan/modules/by-authors/id/$1/$1$2/$author/"
             . $mod->package);
 
- $stat->license([ qw/Artistic GPL-2/ ]);
+ $stat->license($self->intuit_license);
 
  my $prereqs = $mod->status->prereqs;
  my @depends;
@@ -290,6 +291,49 @@ sub prepare {
  return $OK->();
 }
 
+=head2 C<intuit_license>
+
+Returns an array reference to a list of Gentoo licences identifiers under which the current distribution is released.
+
+=cut
+
+my %dslip_license = (
+ p => 'perl',
+ g => 'gpl',
+ l => 'lgpl',
+ b => 'bsd',
+ a => 'artistic',
+ 2 => 'artistic_2',
+);
+
+sub intuit_license {
+ my $self = shift;
+ my $mod  = $self->parent;
+
+ my $dslip = $mod->dslip;
+ if (defined $dslip and $dslip =~ /\S{4}(\S)/) {
+  my @licenses = CPANPLUS::Dist::Gentoo::Maps::license_c2g($dslip_license{$1});
+  return \@licenses if @licenses;
+ }
+ my $extract_dir = $mod->status->extract;
+
+ for my $meta_file (qw/META.json META.yml/) {
+  my $meta = eval {
+   Parse::CPAN::Meta::LoadFile(File::Spec->catdir(
+    $extract_dir,
+    $meta_file,
+   ));
+  } or next;
+  my $license = $meta->{license};
+  if (defined $license) {
+   my @licenses = CPANPLUS::Dist::Gentoo::Maps::license_c2g($license);
+   return \@licenses if @licenses;
+  }
+ }
+
+ return [ CPANPLUS::Dist::Gentoo::Maps::license_c2g('perl') ];
+}
+
 sub create {
  my $self = shift;
  my $stat = $self->status;
@@ -508,7 +552,7 @@ sub _skip { shift->_notify(@_, '-- skipping') }
 
 Gentoo (L<http://gentoo.org>).
 
-L<CPANPLUS>, L<IPC::Cmd> (core modules since 5.9.5).
+L<CPANPLUS>, L<IPC::Cmd> (core modules since 5.9.5), L<Parse::CPAN::Meta> (since 5.10.1).
 
 L<Cwd>, L<Carp> (since perl 5), L<File::Path> (5.001), L<File::Copy> (5.002), L<File::Spec> (5.00405).
 
diff --git a/lib/CPANPLUS/Dist/Gentoo/Maps.pm b/lib/CPANPLUS/Dist/Gentoo/Maps.pm
index 94d2e16..5ce9f7a 100644
--- a/lib/CPANPLUS/Dist/Gentoo/Maps.pm
+++ b/lib/CPANPLUS/Dist/Gentoo/Maps.pm
@@ -40,6 +40,36 @@ sub name_c2g {
  return $gentooisms{$name} || $name;
 }
 
+=head2 C<license_c2g @licenses>
+
+Maps F<META.yml> C<license> tag values to the corresponding list of Gentoo licenses identifiers.
+Duplicates are stripped off.
+
+The included data was gathered from L<Module::Install> and L<Software::License>.
+
+=cut
+
+my %licenses = (
+ apache     => [ 'Apache-2.0' ],
+ artistic   => [ 'Artistic' ],
+ artistic_2 => [ 'Artistic-2' ],
+ bsd        => [ 'BSD' ],
+ gpl        => [ 'GPL-1' ],
+ gpl2       => [ 'GPL-2' ],
+ gpl3       => [ 'GPL-3' ],
+ lgpl       => [ 'LGPL-2.1' ],
+ lgpl2      => [ 'LGPL-2.1' ],
+ lgpl3      => [ 'LGPL-3' ],
+ mit        => [ 'MIT' ],
+ mozilla    => [ 'MPL-1.1' ],
+ perl       => [ 'Artistic', 'GPL-2' ],
+);
+
+sub license_c2g {
+ my %seen;
+ grep !$seen{$_}++, map @{$licenses{+lc} || []}, @_;
+}
+
 =head2 C<version_c2g $version>
 
 Converts a CPAN version to a Gentoo version.
diff --git a/t/13-maps-license.t b/t/13-maps-license.t
new file mode 100644
index 0000000..0a19d00
--- /dev/null
+++ b/t/13-maps-license.t
@@ -0,0 +1,18 @@
+#!perl -T
+
+use strict;
+use warnings;
+
+use Test::More tests => 4;
+
+use CPANPLUS::Dist::Gentoo::Maps;
+
+sub check_licenses {
+ my @licenses = CPANPLUS::Dist::Gentoo::Maps::license_c2g(@{$_[0]});
+ is_deeply \@licenses, $_[1], $_[2];
+}
+
+check_licenses [ 'woo' ],         [ ],                        'nonexistent';
+check_licenses [ 'perl' ],        [ qw/Artistic GPL-2/ ],     'perl';
+check_licenses [ qw/perl gpl2/ ], [ qw/Artistic GPL-2/ ],     'perl + gpl2';
+check_licenses [ qw/perl bsd/ ],  [ qw/Artistic GPL-2 BSD/ ], 'perl + bsd';