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

	}

      }

    }

  }

  if ( $self->{collect_pod} && length($pod_data) ) {
    $pod{$pod_sect} = $pod_data;
  }

  $self->{versions} = \%vers;
  $self->{packages} = \@pkgs;
  $self->{pod} = \%pod;
  $self->{pod_headings} = \@pod;
}

{
my $pn = 0;
sub _evaluate_version_line {
  my $self = shift;
  my( $sigil, $var, $line ) = @_;

  # Some of this code came from the ExtUtils:: hierarchy.

  # We compile into $vsub because 'use version' would cause
  # compiletime/runtime issues with local()
  my $vsub;
  $pn++; # everybody gets their own package
  my $eval = qq{BEGIN { q#  Hide from _packages_inside()
    #; package Module::Build::ModuleInfo::_version::p$pn;
    use Module::Build::Version;
    no strict;

    local $sigil$var;
    \$$var=undef;
      \$vsub = sub {
        $line;
        \$$var
      };
  }};

  local $^W;
  # Try to get the $VERSION
  eval $eval;
  # some modules say $VERSION = $Foo::Bar::VERSION, but Foo::Bar isn't
  # installed, so we need to hunt in ./lib for it
  if ( $@ =~ /Can't locate/ && -d 'lib' ) {
    local @INC = ('lib',@INC);
    eval $eval;
  }
  warn "Error evaling version line '$eval' in $self->{filename}: $@\n"
    if $@;
  (ref($vsub) eq 'CODE') or
    die "failed to build version sub for $self->{filename}";
  my $result = eval { $vsub->() };
  die "Could not get version from $self->{filename} by executing:\n$eval\n\nThe fatal error was: $@\n"
    if $@;

  # Activestate apparently creates custom versions like '1.23_45_01', which
  # cause M::B::Version to think it's an invalid alpha.  So check for that
  # and strip them
  my $num_dots = () = $result =~ m{\.}g;
  my $num_unders = () = $result =~ m{_}g;
  if ( substr($result,0,1) ne 'v' && $num_dots < 2 && $num_unders > 1 ) {
    $result =~ s{_}{}g;
  }

  # Bless it into our own version class
  eval { $result = Module::Build::Version->new($result) };
  die "Version '$result' from $self->{filename} does not appear to be valid:\n$eval\n\nThe fatal error was: $@\n"
    if $@;

  return $result;
}
}


############################################################

# accessors
sub name            { $_[0]->{module}           }

sub filename        { $_[0]->{filename}         }
sub packages_inside { @{$_[0]->{packages}}      }
sub pod_inside      { @{$_[0]->{pod_headings}}  }
sub contains_pod    { $#{$_[0]->{pod_headings}} }

sub version {
    my $self = shift;
    my $mod  = shift || $self->{module};
    my $vers;
    if ( defined( $mod ) && length( $mod ) &&
	 exists( $self->{versions}{$mod} ) ) {
	return $self->{versions}{$mod};
    } else {
	return undef;
    }
}

sub pod {
    my $self = shift;
    my $sect = shift;
    if ( defined( $sect ) && length( $sect ) &&
	 exists( $self->{pod}{$sect} ) ) {
	return $self->{pod}{$sect};
    } else {
	return undef;
    }
}

1;

__END__

=for :stopwords ModuleInfo

=head1 NAME

ModuleInfo - Gather package and POD information from a perl module file