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inc/inc_Module-Build/Module/Build/Base.pm  view on Meta::CPAN

  if ($@) {
    $self->log_warn("$@\nWARNING: Possible missing or corrupt 'MANIFEST' file.\n" .
                    "Nothing to enter for 'provides' field in metafile.\n");
  } else {
    $node->{provides} = $pkgs if %$pkgs;
  }
;
  if (exists $p->{no_index}) {
    $add_node->('no_index', $p->{no_index});
  }

  $add_node->('generated_by', "Module::Build version $Module::Build::VERSION");

  $add_node->('meta-spec',
              {version => '1.4',
               url     => 'http://module-build.sourceforge.net/META-spec-v1.4.html',
              });

  while (my($k, $v) = each %{$self->meta_add}) {
    $add_node->($k, $v);
  }

  while (my($k, $v) = each %{$self->meta_merge}) {
    $self->_hash_merge($node, $k, $v);
  }

  return $node;
}

sub _read_manifest {
  my ($self, $file) = @_;
  return undef unless -e $file;

  require ExtUtils::Manifest;  # ExtUtils::Manifest is not warnings clean.
  local ($^W, $ExtUtils::Manifest::Quiet) = (0,1);
  return scalar ExtUtils::Manifest::maniread($file);
}

sub find_dist_packages {
  my $self = shift;

  # Only packages in .pm files are candidates for inclusion here.
  # Only include things in the MANIFEST, not things in developer's
  # private stock.

  my $manifest = $self->_read_manifest('MANIFEST')
    or die "Can't find dist packages without a MANIFEST file\nRun 'Build manifest' to generate one\n";

  # Localize
  my %dist_files = map { $self->localize_file_path($_) => $_ }
                       keys %$manifest;

  my @pm_files = grep { $_ !~ m{^t} } # skip things in t/
                   grep {exists $dist_files{$_}}
                     keys %{ $self->find_pm_files };

  return $self->find_packages_in_files(\@pm_files, \%dist_files);
}

# XXX Do not document this function; mst wrote it and now says the API is
# stupid and needs to be fixed and it shouldn't become a public API until then
sub find_packages_in_files {
  my ($self, $file_list, $filename_map) = @_;

  # First, we enumerate all packages & versions,
  # separating into primary & alternative candidates
  my( %prime, %alt );
  foreach my $file (@{$file_list}) {
    my $mapped_filename = $filename_map->{$file};
    my @path = split( /\//, $mapped_filename );
    (my $prime_package = join( '::', @path[1..$#path] )) =~ s/\.pm$//;

    my $pm_info = Module::Build::ModuleInfo->new_from_file( $file );

    foreach my $package ( $pm_info->packages_inside ) {
      next if $package eq 'main';  # main can appear numerous times, ignore
      next if $package eq 'DB';    # special debugging package, ignore
      next if grep /^_/, split( /::/, $package ); # private package, ignore

      my $version = $pm_info->version( $package );

      if ( $package eq $prime_package ) {
        if ( exists( $prime{$package} ) ) {
          # M::B::ModuleInfo will handle this conflict
          die "Unexpected conflict in '$package'; multiple versions found.\n";
        } else {
          $prime{$package}{file} = $mapped_filename;
          $prime{$package}{version} = $version if defined( $version );
        }
      } else {
        push( @{$alt{$package}}, {
                                  file    => $mapped_filename,
                                  version => $version,
                                 } );
      }
    }
  }

  # Then we iterate over all the packages found above, identifying conflicts
  # and selecting the "best" candidate for recording the file & version
  # for each package.
  foreach my $package ( keys( %alt ) ) {
    my $result = $self->_resolve_module_versions( $alt{$package} );

    if ( exists( $prime{$package} ) ) { # primary package selected

      if ( $result->{err} ) {
        # Use the selected primary package, but there are conflicting
        # errors among multiple alternative packages that need to be
        # reported
        $self->log_warn(
          "Found conflicting versions for package '$package'\n" .
          "  $prime{$package}{file} ($prime{$package}{version})\n" .
          $result->{err}
        );

      } elsif ( defined( $result->{version} ) ) {
        # There is a primary package selected, and exactly one
        # alternative package

        if ( exists( $prime{$package}{version} ) &&