Files
Autobot/modules/Calc.pm
T
2011-02-01 21:38:02 -05:00

129 lines
2.6 KiB
Perl

# Auto IRC Bot. An advanced, lightweight and powerful IRC bot.
# Copyright (C) 2010-2011 Xelhua Development Team (doc/CREDITS)
# This program is free software; rights to this code are stated in doc/LICENSE.
package m_Calc;
use strict;
use warnings;
use API::Std qw(cmd_add cmd_del);
use API::IRC qw(privmsg);
use LWP::UserAgent;
use URI::Escape;
use JSON -support_by_pp;
# Initialization subroutine.
sub _init
{
# Create the CALC command.
cmd_add("CALC", 0, \%m_Calc::SHELP_CALC, \%m_Calc::FHELP_CALC, \&m_Calc::calc) or return 0;
# Success.
return 1;
}
# Void subroutine.
sub _void
{
# Delete the CALC command.
cmd_del("CALC") or return 0;
# Success.
return 1;
}
# Help hashes.
our %SHELP_CALC = (
'en' => "Calculate an expression.",
);
our %FHELP_CALC = (
'en' => "This command will calculate an expression using Google Calculator. Syntax: CALC <expression>",
);
# Callback for CALC command.
sub calc
{
my (%data) = @_;
# Create an instance of LWP::UserAgent.
my $ua = LWP::UserAgent->new();
$ua->agent('Auto IRC Bot');
$ua->timeout(2);
# Create an instance of JSON.
my $json = JSON->new();
# Put together the call to the Google Calculator API.
my @args = @{ $data{args} };
my $expr = join(' ', @args);
my $url = "http://www.google.com/ig/calculator?q=".uri_escape($expr);
# Get the response via HTTP.
my $response = $ua->get($url);
if ($response->is_success) {
# If successful, decode the content.
my $d = $json->allow_nonref->utf8->relaxed->escape_slash->loose->allow_singlequote->allow_barekey->decode($response->decoded_content);
# And send to channel
if ($d->{error} eq "" or $d->{error} == 0) {
privmsg($data{svr}, $data{chan}, "Result: ".$d->{lhs}." = ".$d->{rhs});
}
else {
# Otherwise, send an error message.
privmsg($data{svr}, $data{chan}, "Google calculator sent an error.");
}
}
else {
# Otherwise, send an error message.
privmsg($data{svr}, $data{chan}, "An error occurred while sending your expression to Google Calculator.");
}
return 1;
}
# Start initialization.
API::Std::mod_init("Calc", "Xelhua", "1.00", "3.0d", __PACKAGE__);
__END__
=head1 Calc
=head2 Description
=over
This module adds the CALC command for evaluating an
expression using Google Calculator.
=back
=head2 How To Use
=over
Add Calc to the module autoload.
=back
=head2 Examples
=over
<JohnSmith> !calc 1+1
<Auto> Result: 1+1 = 2
=back
=head2 To Do
=over
* Add Spanish, French and German translations for the help hashes.
=back
=head2 Technical
=over
This module requires LWP::UserAgent, URI::Escape and JSON both obtainable from CPAN (http://cpan.org)
This module is compatible with Auto version 3.0a2+.
=back