view release on metacpan or  search on metacpan

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

      (?:\w+(?:::|\'))*  # Foo::Bar:: ...
    )?
    VERSION
  )\b
}x;

my $VERS_REGEXP = qr{ # match a VERSION definition
  (?:
    \(\s*$VARNAME_REGEXP\s*\) # with parens
  |
    $VARNAME_REGEXP           # without parens
  )
  \s*
  =[^=~]  # = but not ==, nor =~
}x;


sub new_from_file {
  my $class    = shift;
  my $filename = File::Spec->rel2abs( shift );

  return undef unless defined( $filename ) && -f $filename;
  return $class->_init(undef, $filename, @_);
}

sub new_from_module {
  my $class   = shift;
  my $module  = shift;
  my %props   = @_;

  $props{inc} ||= \@INC;
  my $filename = $class->find_module_by_name( $module, $props{inc} );
  return undef unless defined( $filename ) && -f $filename;
  return $class->_init($module, $filename, %props);
}

sub _init {
  my $class    = shift;
  my $module   = shift;
  my $filename = shift;
  my %props = @_;

  my( %valid_props, @valid_props );
  @valid_props = qw( collect_pod inc );
  @valid_props{@valid_props} = delete( @props{@valid_props} );
  warn "Unknown properties: @{[keys %props]}\n" if scalar( %props );

  my %data = (
    module       => $module,
    filename     => $filename,
    version      => undef,
    packages     => [],
    versions     => {},
    pod          => {},
    pod_headings => [],
    collect_pod  => 0,

    %valid_props,
  );

  my $self = bless(\%data, $class);

  $self->_parse_file();

  unless($self->{module} and length($self->{module})) {
    my ($v, $d, $f) = File::Spec->splitpath($self->{filename});
    if($f =~ /\.pm$/) {
      $f =~ s/\..+$//;
      my @candidates = grep /$f$/, @{$self->{packages}};
      $self->{module} = shift(@candidates); # punt
    }
    else {
      if(grep /main/, @{$self->{packages}}) {
        $self->{module} = 'main';
      }
      else {
        $self->{module} = $self->{packages}[0] || '';
      }
    }
  }

  $self->{version} = $self->{versions}{$self->{module}}
      if defined( $self->{module} );

  return $self;
}

# class method
sub _do_find_module {
  my $class   = shift;
  my $module  = shift || die 'find_module_by_name() requires a package name';
  my $dirs    = shift || \@INC;

  my $file = File::Spec->catfile(split( /::/, $module));
  foreach my $dir ( @$dirs ) {
    my $testfile = File::Spec->catfile($dir, $file);
    return [ File::Spec->rel2abs( $testfile ), $dir ]
	if -e $testfile and !-d _;  # For stuff like ExtUtils::xsubpp
    return [ File::Spec->rel2abs( "$testfile.pm" ), $dir ]
	if -e "$testfile.pm";
  }
  return;
}

# class method
sub find_module_by_name {
  my $found = shift()->_do_find_module(@_) or return;
  return $found->[0];
}

# class method
sub find_module_dir_by_name {
  my $found = shift()->_do_find_module(@_) or return;
  return $found->[1];
}


# given a line of perl code, attempt to parse it if it looks like a
# $VERSION assignment, returning sigil, full name, & package name
sub _parse_version_expression {
  my $self = shift;