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pbot/lib/PBot/Core/Plugins.pm
Pragmatic Software 8d5b992b4c Update copyright
2023-02-20 21:31:52 -08:00

117 lines
3.0 KiB
Perl

# File: Plugins.pm
#
# Purpose: Loads and manages external plugins.
# SPDX-FileCopyrightText: 2015-2023 Pragmatic Software <pragma78@gmail.com>
# SPDX-License-Identifier: MIT
package PBot::Core::Plugins;
use parent 'PBot::Core::Class';
use PBot::Imports;
use File::Basename;
sub initialize {
my ($self, %conf) = @_;
# loaded plugins
$self->{plugins} = {};
# autoload plugins listed in `$data_dir/plugins_autoload` file
$self->autoload(%conf);
}
sub autoload {
my ($self, %conf) = @_;
return if $self->{pbot}->{registry}->get_value('plugins', 'noautoload');
my $data_dir = $self->{pbot}->{registry}->get_value('general', 'data_dir');
my $plugin_count = 0;
my $fh;
if (not open $fh, "<$data_dir/plugin_autoload") {
$self->{pbot}->{logger}->log("Plugins: autoload: file $data_dir/plugin_autoload does not exist; skipping autoloading of Plugins\n");
return;
}
chomp(my @plugins = <$fh>);
close $fh;
$self->{pbot}->{logger}->log("Loading plugins:\n");
$conf{quiet} = 1;
foreach my $plugin (sort @plugins) {
# do not load plugins that begin with a comment
next if $plugin =~ m/^\s*#/;
next if not length $plugin;
$plugin = basename $plugin;
$plugin =~ s/.pm$//;
$self->{pbot}->{logger}->log(" $plugin\n");
if ($self->load($plugin, %conf)) {
$plugin_count++;
} else {
die "Plugin $plugin failed to autoload. You may remove it from $data_dir/plugin_autoload.\n";
}
}
$self->{pbot}->{logger}->log("$plugin_count plugin" . ($plugin_count == 1 ? '' : 's') . " loaded.\n");
}
sub load {
my ($self, $plugin, %conf) = @_;
$self->unload($plugin);
return if $self->{pbot}->{registry}->get_value('plugins', 'disabled');
my $module = "PBot/Plugin/$plugin.pm";
$self->{pbot}->{refresher}->{refresher}->refresh_module($module);
my $ret = eval {
$self->{pbot}->{logger}->log("Loading $plugin\n") unless $conf{quiet};
require "$module";
my $class = "PBot::Plugin::$plugin";
$self->{plugins}->{$plugin} = $class->new(pbot => $self->{pbot}, %conf);
$self->{pbot}->{refresher}->{refresher}->update_cache($module);
return 1;
};
if (my $exception = $@) {
$self->{pbot}->{logger}->log("Error loading $plugin: $exception");
return 0;
}
return $ret;
}
sub unload {
my ($self, $plugin) = @_;
if (exists $self->{plugins}->{$plugin}) {
eval {
$self->{plugins}->{$plugin}->unload;
delete $self->{plugins}->{$plugin};
};
if (my $exception = $@) {
$self->{pbot}->{logger}->log("Warning: got error unloading plugin $plugin: $exception");
}
my $module = "PBot/Plugin/$plugin.pm";
$self->{pbot}->{refresher}->{refresher}->unload_module($module);
$self->{pbot}->{logger}->log("Plugin $plugin unloaded.\n");
return 1;
} else {
return 0;
}
}
1;