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inc/Module/Install.pm  view on Meta::CPAN

sub preload {
	my $self = shift;
	unless ( $self->{extensions} ) {
		$self->load_extensions(
			"$self->{prefix}/$self->{path}", $self
		);
	}

	my @exts = @{$self->{extensions}};
	unless ( @exts ) {
		my $admin = $self->{admin};
		@exts = $admin->load_all_extensions;
	}

	my %seen;
	foreach my $obj ( @exts ) {
		while (my ($method, $glob) = each %{ref($obj) . '::'}) {
			next unless $obj->can($method);
			next if $method =~ /^_/;
			next if $method eq uc($method);
			$seen{$method}++;
		}
	}

	my $who = $self->_caller;
	foreach my $name ( sort keys %seen ) {
		*{"${who}::$name"} = sub {
			${"${who}::AUTOLOAD"} = "${who}::$name";
			goto &{"${who}::AUTOLOAD"};
		};
	}
}

sub new {
	my ($class, %args) = @_;

	# ignore the prefix on extension modules built from top level.
	my $base_path = Cwd::abs_path($FindBin::Bin);
	unless ( Cwd::abs_path(Cwd::cwd()) eq $base_path ) {
		delete $args{prefix};
	}

	return $args{_self} if $args{_self};

	$args{dispatch} ||= 'Admin';
	$args{prefix}   ||= 'inc';
	$args{author}   ||= ($^O eq 'VMS' ? '_author' : '.author');
	$args{bundle}   ||= 'inc/BUNDLES';
	$args{base}     ||= $base_path;
	$class =~ s/^\Q$args{prefix}\E:://;
	$args{name}     ||= $class;
	$args{version}  ||= $class->VERSION;
	unless ( $args{path} ) {
		$args{path}  = $args{name};
		$args{path}  =~ s!::!/!g;
	}
	$args{file}     ||= "$args{base}/$args{prefix}/$args{path}.pm";
	$args{wrote}      = 0;

	bless( \%args, $class );
}

sub call {
	my ($self, $method) = @_;
	my $obj = $self->load($method) or return;
        splice(@_, 0, 2, $obj);
	goto &{$obj->can($method)};
}

sub load {
	my ($self, $method) = @_;

	$self->load_extensions(
		"$self->{prefix}/$self->{path}", $self
	) unless $self->{extensions};

	foreach my $obj (@{$self->{extensions}}) {
		return $obj if $obj->can($method);
	}

	my $admin = $self->{admin} or die <<"END_DIE";
The '$method' method does not exist in the '$self->{prefix}' path!
Please remove the '$self->{prefix}' directory and run $0 again to load it.
END_DIE

	my $obj = $admin->load($method, 1);
	push @{$self->{extensions}}, $obj;

	$obj;
}

sub load_extensions {
	my ($self, $path, $top) = @_;

	unless ( grep { lc $_ eq lc $self->{prefix} } @INC ) {
		unshift @INC, $self->{prefix};
	}

	foreach my $rv ( $self->find_extensions($path) ) {
		my ($file, $pkg) = @{$rv};
		next if $self->{pathnames}{$pkg};

		local $@;
		my $new = eval { require $file; $pkg->can('new') };
		unless ( $new ) {
			warn $@ if $@;
			next;
		}
		$self->{pathnames}{$pkg} = delete $INC{$file};
		push @{$self->{extensions}}, &{$new}($pkg, _top => $top );
	}

	$self->{extensions} ||= [];
}

sub find_extensions {
	my ($self, $path) = @_;

	my @found;
	File::Find::find( sub {