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Add the wrap_plugin function to allow for plugin wrapping

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git-svn-id: https://svn.perl.org/qpsmtpd/trunk@307 958fd67b-6ff1-0310-b445-bb7760255be9
This commit is contained in:
Robert Spier 2004-09-07 05:07:20 +00:00
parent 4d4baac96e
commit 96d66b8d46
1 changed files with 33 additions and 0 deletions
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33
lib/Qpsmtpd/Plugin.pm
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@ -52,4 +52,37 @@ sub connection {
shift->qp->connection;
}
sub wrap_plugin {
my ($self, $plugin_file, @args) = @_;
# Wrap all of the methods in an existing plugin so that functions
# can easily be replaced. Yes, we could use something like
# Hook::Lexwrap isntead, but since it's only 15 lines of code, might
# as well do it ourself.
# Static methods in plugins will probably not work right in this
# scheme.
# Load the new plugin under our namespace.
my $newPackage = __PACKAGE__."::_wrap_";
Qpsmtpd::_compile($self->plugin_name, $newPackage, $plugin_file)
unless defined &{"${newPackage}::register"};
no strict 'refs';
my $currentPackage = ref $self;
local *{${newPackage}."::register_hook"} = sub {
if (defined &{ $currentPackage . "::$_[2]"}) {
# We're wrapping this hook. Store the old value in $self-{_wrap_FUNC}
$self->{"_wrap_".$_[2]} = \&{${newPackage}."::$_[2]"};
} else {
# We're not wrapping this hook. Alias it into our namespace.
*{$currentPackage."::$_[2]"} = \&{${newPackage}."::$_[2]"};
}
$self->register_hook($_[1],$_[2]);
};
$self->{_wrapped_package} = $newPackage;
$newPackage->register($self->{_qp},@args);
}
1;