File Coverage

blib/lib/Module/Build/PPMMaker.pm

Criterion	Covered	Total	%
statement	55	65	84.6
branch	8	20	40.0
condition	1	3	33.3
subroutine	8	8	100.0
pod	0	2	0.0
total	72	98	73.4

package Module::Build::PPMMaker;

use strict;
use warnings;
use Config;

our $VERSION = '0.42_33';
$VERSION = eval $VERSION;

# This code is mostly borrowed from ExtUtils::MM_Unix 6.10_03, with a
# few tweaks based on the PPD spec at
# http://www.xav.com/perl/site/lib/XML/PPD.html

# The PPD spec is based on

sub new {
  my $package = shift;
  return bless {@_}, $package;
}

sub make_ppd {
  my ($self, %args) = @_;
  my $build = delete $args{build};

  my @codebase;
  if (exists $args{codebase}) {
    @codebase = ref $args{codebase} ? @{$args{codebase}} : ($args{codebase});
  } else {
    my $distfile = $build->ppm_name . '.tar.gz';
    print "Using default codebase '$distfile'\n";
    @codebase = ($distfile);
  }

  my %dist;
  foreach my $info (qw(name author abstract version)) {
    my $method = "dist_$info";
    $dist{$info} = $build->$method() or die "Can't determine distribution's $info\n";
  }

  $self->_simple_xml_escape($_) foreach $dist{abstract}, @{$dist{author}};

  # TODO: could add  tag if we knew what the URLs were for
  # various licenses
  my $ppd = <<"PPD";

    $dist{abstract}
@{[ join "\n", map "    $_", @{$dist{author}} ]}

PPD

  # We don't include recommended dependencies because PPD has no way
  # to distinguish them from normal dependencies.  We don't include
  # build_requires dependencies because the PPM installer doesn't
  # build or test before installing.  And obviously we don't include
  # conflicts either.

  foreach my $type (qw(requires)) {
    my $prereq = $build->$type();
    foreach my $modname (sort keys %$prereq) {
      next if $modname eq 'perl';

      my $min_version = '0.0';
      foreach my $c ($build->_parse_conditions($prereq->{$modname})) {
        my ($op, $version) = $c =~ /^\s*  (<=?|>=?|==|!=)  \s*  ([\w.]+)  \s*$/x;

        # This is a nasty hack because it fails if there is no >= op
        if ($op eq '>=') {
          $min_version = $version;
          last;
        }
      }

      # PPM4 spec requires a '::' for top level modules
      $modname .= '::' unless $modname =~ /::/;

      $ppd .= qq!        \n!;
    }
  }

  # We only include these tags if this module involves XS, on the
  # assumption that pure Perl modules will work on any OS.
  if (keys %{$build->find_xs_files}) {
    my $perl_version = $self->_ppd_version($build->perl_version);
    $ppd .= sprintf(<<'EOF', $self->_varchname($build->config) );

EOF
  }

  foreach my $codebase (@codebase) {
    $self->_simple_xml_escape($codebase);
    $ppd .= sprintf(<<'EOF', $codebase);

EOF
  }

  $ppd .= <<'EOF';


EOF

  my $ppd_file = "$dist{name}.ppd";
  open(my $fh, '>', $ppd_file)
    or die "Cannot write to $ppd_file: $!";

  binmode($fh, ":utf8")
    if $] >= 5.008 && $Config{useperlio};
  print $fh $ppd;
  close $fh;

  return $ppd_file;
}

sub _ppd_version {
  my ($self, $version) = @_;

  # generates something like "0,18,0,0"
  return join ',', (split(/\./, $version), (0)x4)[0..3];
}

sub _varchname {  # Copied from PPM.pm
  my ($self, $config) = @_;
  my $varchname = $config->{archname};
  # Append "-5.8" to architecture name for Perl 5.8 and later
  if ($] >= 5.008) {
      my $vstring = sprintf "%vd", $^V;
      $vstring =~ s/\.\d+$//;
      $varchname .= "-$vstring";
  }
  return $varchname;
}

{
  my %escapes = (
		 "\n" => "\\n",
		 '"' => '"',
		 '&' => '&',
		 '>' => '>',
		 '<' => '<',
		);
  my $rx = join '|', keys %escapes;

  sub _simple_xml_escape {
    $_[1] =~ s/($rx)/$escapes{$1}/go;
  }
}

1;
__END__