FM / Module

/usr/share/perl/5.30.0/Module/

/usr/share/perl/5.30.0/Module

Name	Size	Mode	Actions
CoreList/	-	0755	rm
Load/	-	0755	rm
CoreList.pm	829342	0644	edit dl rm
CoreList.pod	8405	0644	edit dl rm
Load.pm	9097	0644	edit dl rm
Loaded.pm	3348	0644	edit dl rm
Metadata.pm	33676	0644	edit dl rm

Edit: /usr/share/perl/5.30.0/Module/Loaded.pm (3348B)

package Module::Loaded;

use strict;
use Carp qw[carp];

BEGIN { use base 'Exporter';
        use vars qw[@EXPORT $VERSION];

$VERSION = '0.08';
        @EXPORT  = qw[mark_as_loaded mark_as_unloaded is_loaded];
}

=head1 NAME

Module::Loaded - mark modules as loaded or unloaded

=head1 SYNOPSIS

use Module::Loaded;

$bool = mark_as_loaded('Foo');   # Foo.pm is now marked as loaded
    $loc  = is_loaded('Foo');        # location of Foo.pm set to the
                                     # loaders location
    eval "require 'Foo'";            # is now a no-op

$bool = mark_as_unloaded('Foo'); # Foo.pm no longer marked as loaded
    eval "require 'Foo'";            # Will try to find Foo.pm in @INC

=head1 DESCRIPTION

When testing applications, often you find yourself needing to provide
functionality in your test environment that would usually be provided
by external modules. Rather than munging the C<%INC> by hand to mark
these external modules as loaded, so they are not attempted to be loaded
by perl, this module offers you a very simple way to mark modules as
loaded and/or unloaded.

=head1 FUNCTIONS

=head2 $bool = mark_as_loaded( PACKAGE );

Marks the package as loaded to perl. C<PACKAGE> can be a bareword or
string.

If the module is already loaded, C<mark_as_loaded> will carp about
this and tell you from where the C<PACKAGE> has been loaded already.

=cut

sub mark_as_loaded (*) {
    my $pm      = shift;
    my $file    = __PACKAGE__->_pm_to_file( $pm ) or return;
    my $who     = [caller]->[1];

my $where   = is_loaded( $pm );
    if ( defined $where ) {
        carp "'$pm' already marked as loaded ('$where')";

} else {
        $INC{$file} = $who;
    }

return 1;
}

=head2 $bool = mark_as_unloaded( PACKAGE );

Marks the package as unloaded to perl, which is the exact opposite
of C<mark_as_loaded>. C<PACKAGE> can be a bareword or string.

If the module is already unloaded, C<mark_as_unloaded> will carp about
this and tell you the C<PACKAGE> has been unloaded already.

=cut

sub mark_as_unloaded (*) {
    my $pm      = shift;
    my $file    = __PACKAGE__->_pm_to_file( $pm ) or return;

unless( defined is_loaded( $pm ) ) {
        carp "'$pm' already marked as unloaded";

} else {
        delete $INC{ $file };
    }

return 1;
}

=head2 $loc = is_loaded( PACKAGE );

C<is_loaded> tells you if C<PACKAGE> has been marked as loaded yet.
C<PACKAGE> can be a bareword or string.

It returns falls if C<PACKAGE> has not been loaded yet and the location
from where it is said to be loaded on success.

=cut

sub is_loaded (*) {
    my $pm      = shift;
    my $file    = __PACKAGE__->_pm_to_file( $pm ) or return;

return $INC{$file} if exists $INC{$file};

return;
}

sub _pm_to_file {
    my $pkg = shift;
    my $pm  = shift or return;

my $file = join '/', split '::', $pm;
    $file .= '.pm';

return $file;
}

=head1 BUG REPORTS

Please report bugs or other issues to E<lt>bug-module-loaded@rt.cpan.org<gt>.

=head1 AUTHOR

This module by Jos Boumans E<lt>kane@cpan.orgE<gt>.

=head1 COPYRIGHT

This library is free software; you may redistribute and/or modify it
under the same terms as Perl itself.

=cut

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