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Dir : ~/usr/share/doc/perl-Regexp-Assemble/examples/

View File Name : ircwatcher

/usr/bin/perl -w
#
# ircwatcher - watch an IRC stream and do things when
#              interesting things occur
#
# This script demonstrates the use of dispatch table. One
# regular expression matching everthing, and then handing
# off the captured submatches to a callback.
#
# Try changing the read of STDIN to DATA for a quick demo.
#
# Acknowledgements to David "Sniper" Rigaudi�re for the
# idea.
#
# Copyright (C) David Landgren 2005

use strict;
use Regexp::Assemble;

my %dispatch = (
    '^\*\*\* (\S+) joined channel (\S+)$'           => \&joined,
    '^\*\*\* (\S+) left channel (\S+) reason (.*)$' => \&left,
    '^q$' => sub { exit },
);

my $re = Regexp::Assemble->new
    ->track(1)
    ->add(keys %dispatch);

sub joined {
    my ($who, $channel) = @_;
    print "$who joined $channel\n";
}

sub left {
    my ($who, $channel, $reason) = @_;
    print "$who left $channel saying $reason\n";
}

while( <STDIN> ) {
    chomp;
    if ($re->match($_)) {
        $dispatch{$re->matched}->($re->capture);
    }
    else {
        print "ignored <$_>\n";
    }
}

__DATA__
*** david joined channel foo
hello
*** david left channel bar reason that's all folks
q