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use strict;
use warnings;
use Irssi;
use POSIX;
use Time::HiRes qw/sleep/;
my $forked = 0;
sub pipe_and_fork {
my ($read_handle, $write_handle);
pipe($read_handle, $write_handle);
my $oldfh = select($write_handle);
$| = 1;
select $oldfh;
return if $forked;
my $pid = fork();
if (not defined $pid) {
_error("Can't fork: Aborting");
close($read_handle);
close($write_handle);
return;
}
$forked = 1;
if ($pid > 0) { # this is the parent (Irssi)
close ($write_handle);
Irssi::pidwait_add($pid);
my $job = $pid;
my $tag;
my @args = ($read_handle, \$tag, $job);
$tag = Irssi::input_add(fileno($read_handle),
Irssi::INPUT_READ,
\&child_input,
\@args);
} else { # child
# make up some data - block if we like.
for (1..10) {
sleep rand 1;
print $write_handle "Some data: $_\n";
}
print $write_handle "__DONE__\n";
close $write_handle;
POSIX::_exit(1);
}
}
sub child_input {
my $args = shift;
my ($read_handle, $input_tag_ref, $job) = @$args;
my $data = <$read_handle>;
if ($data =~ m/__DONE__/) {
close($read_handle);
Irssi::input_remove($$input_tag_ref);
_msg("child finished");
$forked = 0;
} else {
_msg("Received from child: $data");
}
}
sub _error {
my ($msg) = @_;
my $win = Irssi::active_win();
$win->print($msg, Irssi::MSGLEVEL_CLIENTERROR);
}
sub _msg {
my ($msg) = @_;
my $win = Irssi::active_win();
$win->print($msg, Irssi::MSGLEVEL_CLIENTCRAP);
}
Irssi::command_bind("start_pipes", \&pipe_and_fork);