NAME

Parse::IRC - A parser for the IRC protocol.

SYNOPSIS

General usage:

  use strict;
  use Parse::IRC;

  # Functional interface

  my $hashref = parse_irc( $irc_string );

  # OO interface

  my $irc_parser = Parse::IRC->new();

  my $hashref = $irc_parser->parse( $irc_string );

Using Parse::IRC in a simple IRC bot:

  # A simple IRC bot using Parse::IRC

  use strict;
  use IO::Socket;
  use Parse::IRC;

  my $parser = Parse::IRC->new( public => 1 );

  my %dispatch = ( 'ping' => \&irc_ping, '001' => \&irc_001, 'public' => \&irc_public );

  # The server to connect to and our details.
  my $server = "irc.perl.moo";
  my $nick = "parseirc$$";
  my $login = "simple_bot";

  # The channel which the bot will join.
  my $channel = "#IRC.pm";

  # Connect to the IRC server.
  my $sock = new IO::Socket::INET(PeerAddr => $server,
                                  PeerPort => 6667,
                                  Proto => 'tcp') or
                                    die "Can't connect\n";

  # Log on to the server.
  print $sock "NICK $nick\r\n";
  print $sock "USER $login 8 * :Perl IRC Hacks Robot\r\n";

  # Keep reading lines from the server.
  while (my $input = <$sock>) {
    $input =~ s/\r\n//g;
    my $hashref = $parser->parse( $input );
    SWITCH: {
          my $type = lc $hashref->{command};
          my @args;
          push @args, $hashref->{prefix} if $hashref->{prefix};
          push @args, @{ $hashref->{params} };
          if ( defined $dispatch{$type} ) {
            $dispatch{$type}->(@args);
            last SWITCH;
          }
          print STDOUT join( ' ', "irc_$type:", @args ), "\n";
    }
  }

  sub irc_ping {
    my $server = shift;
    print $sock "PONG :$server\r\n";
    return 1;
  }

  sub irc_001 {
    print STDOUT "Connected to $_[0]\n";
    print $sock "JOIN $channel\r\n";
    return 1;
  }

  sub irc_public {
    my ($who,$where,$what) = @_;
    print "$who -> $where -> $what\n";
    return 1;
  }

DESCRIPTION

Parse::IRC provides a convenient way of parsing lines of text conforming to the IRC protocol ( see RFC1459 or RFC2812 ).

FUNCTION INTERFACE

Using the module automagically imports 'parse_irc' into your namespace.

parse_irc: Takes a string of IRC protcol text. Returns a hashref on success or undef on failure. See below for the format of the hashref returned.

OBJECT INTERFACE

CONSTRUCTOR

new: Creates a new Parse::IRC object. One may specify debug => 1 to enable warnings about non-IRC protcol lines. Specify public => 1 to enable the automatic conversation of privmsgs targeted at channels to 'public' instead of 'privmsg'.

METHODS

parse

Takes a string of IRC protcol text. Returns a hashref on success or undef on failure. The hashref contains the following fields:

  prefix
  command
  params ( this is an arrayref )
  raw_line

For example, if the filter receives the following line, the following hashref is produced:

  LINE: ':moo.server.net 001 lamebot :Welcome to the IRC network lamebot'

  HASHREF: {
             prefix   => ':moo.server.net',
             command  => '001',
             params   => [ 'lamebot', 'Welcome to the IRC network lamebot' ],
             raw_line => ':moo.server.net 001 lamebot :Welcome to the IRC network lamebot',
           }

AUTHOR

Chris 'BinGOs' Williams

Based on code originally developed by Jonathan Steinert