mirror of https://github.com/pragma-/pbot.git
89 lines
1.7 KiB
Perl
89 lines
1.7 KiB
Perl
# File: Registerable.pm
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# Author: pragma_
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#
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# Purpose: Provides functionality to register and execute one or more subroutines.
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package PBot::Registerable;
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use warnings;
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use strict;
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use Carp ();
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sub new {
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if(ref($_[1]) eq 'HASH') {
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Carp::croak("Options to Registerable should be key/value pairs, not hash reference");
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}
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my ($class, %conf) = @_;
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my $self = bless {}, $class;
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$self->initialize(%conf);
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return $self;
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}
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sub initialize {
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my $self = shift;
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$self->{handlers} = [];
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}
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sub execute_all {
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my $self = shift;
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foreach my $func (@{ $self->{handlers} }) {
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my $result = &{ $func->{subref} }(@_);
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return $result if defined $result;
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}
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return undef;
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}
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sub execute {
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my $self = shift;
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my $ref = shift;
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if(not defined $ref) {
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Carp::croak("Missing reference parameter to Registerable::execute");
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}
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foreach my $func (@{ $self->{handlers} }) {
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if($ref == $func || $ref == $func->{subref}) {
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return &{ $func->{subref} }(@_);
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}
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}
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return undef;
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}
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sub register {
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my $self = shift;
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my $subref;
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if(@_) {
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$subref = shift;
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} else {
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Carp::croak("Must pass subroutine reference to register()");
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}
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my $ref = { subref => $subref };
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push @{ $self->{handlers} }, $ref;
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return $ref;
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}
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sub unregister {
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my $self = shift;
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my $ref;
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if(@_) {
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$ref = shift;
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} else {
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Carp::croak("Must pass subroutine reference to unregister()");
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}
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@{ $self->{handlers} } = grep { $_ != $ref && $_->{subref} != $ref } @{ $self->{handlers} };
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}
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1;
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