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#!/usr/bin/env perl
use warnings;
use strict;
sub PROGRAM () { "/opt/stow/repo/irssi-debug/bin/irssi" }
use POSIX;
use POE qw( Wheel::ReadWrite Wheel::Run Filter::Stream );
use Term::VT102;
use Term::TermInfo;
my $ti = Term::Terminfo->new();
my $vt = Term::VT102->new(rows => 24, cols => 80);
$vt->callback_set('OUTPUT', \&vt_output, undef);
$vt->callback_set('ROWCHANGE', \&vt_rowchange, undef);
sub vt_rowchange {
my ($vt, $cb_name, $arg1, $arg2, $priv_data) = @_;
#print STDERR "Row $arg1 changing: $arg2\n";
print $ti->getstr("clear");
print vt_dump();
}
sub vt_output {
my ($vt, $cb_name, $cb_data, $priv_data) = @_;
#print "X:" . $cb_data;
}
sub vt_dump {
my $str = '';
for my $y (1..24) {
$str .= $vt->row_sgrtext($y) . "\n";
}
return $str;
}
### Handle the _start event. This sets things in motion.
sub handle_start {
my ($kernel, $heap) = @_[KERNEL, HEAP];
save_term_settings($heap);
# Set a signal handler.
$kernel->sig(CHLD => "got_sigchld");
make_raw();
# Start the terminal reader/writer.
$heap->{stdio} = POE::Wheel::ReadWrite->new(
InputHandle => \*STDIN,
OutputHandle => \*STDOUT,
InputEvent => "got_terminal_stdin",
Filter => POE::Filter::Stream->new(),
);
# Start the asynchronous child process.
$heap->{program} = POE::Wheel::Run->new(
Program => PROGRAM,
Conduit => "pty",
StdoutEvent => "got_child_stdout",
StdioFilter => POE::Filter::Stream->new(),
);
}
### Handle the _stop event. This restores the original terminal
### settings when we're done. That's very important.
sub handle_stop {
my $heap = $_[HEAP];
$heap->{stdin_tio}->setattr(0, TCSANOW);
$heap->{stdout_tio}->setattr(1, TCSANOW);
$heap->{stderr_tio}->setattr(2, TCSANOW);
}
### Handle terminal STDIN. Send it to the background program's STDIN.
### If the user presses ^C, then also go berserk a little.
sub handle_terminal_stdin {
my ($heap, $input) = @_[HEAP, ARG0];
while ($input =~ m/\003/g) {
$input = "/echo I like cakes\n";
}
$heap->{program}->put($input);
}
### Handle STDOUT from the child program.
sub handle_child_stdout {
my ($heap, $input) = @_[HEAP, ARG0];
# process via vt
$vt->process($input);
# send to terminal
# $heap->{stdio}->put($input);
}
### Handle SIGCHLD. Shut down if the exiting child process was the
### one we've been managing.
sub handle_sigchld {
my ($heap, $child_pid) = @_[HEAP, ARG1];
if ($child_pid == $heap->{program}->PID) {
delete $heap->{program};
delete $heap->{stdio};
}
return 0;
}
### Start a session to encapsulate the previous features.
POE::Session->create(
inline_states => {
_start => \&handle_start,
_stop => \&handle_stop,
got_terminal_stdin => \&handle_terminal_stdin,
got_child_stdout => \&handle_child_stdout,
got_sigchld => \&handle_sigchld,
},
);
sub make_raw {
# Put the terminal into raw input mode. Otherwise discrete
# keystrokes will not be read immediately.
my $tio = POSIX::Termios->new();
$tio->getattr(0);
my $lflag = $tio->getlflag;
$lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL | ICANON | IEXTEN | ISIG);
$tio->setlflag($lflag);
my $iflag = $tio->getiflag;
$iflag &= ~(BRKINT | INPCK | ISTRIP | IXON);
$tio->setiflag($iflag);
my $cflag = $tio->getcflag;
$cflag &= ~(CSIZE | PARENB);
$tio->setcflag($cflag);
$tio->setattr(0, TCSANOW);
}
sub save_term_settings {
my ($heap) = @_;
# Save the original terminal settings so they can be restored later.
$heap->{stdin_tio} = POSIX::Termios->new();
$heap->{stdin_tio}->getattr(0);
$heap->{stdout_tio} = POSIX::Termios->new();
$heap->{stdout_tio}->getattr(1);
$heap->{stderr_tio} = POSIX::Termios->new();
$heap->{stderr_tio}->getattr(2);
}
### Start POE's main loop, which runs the session until it's done.
$poe_kernel->run();
exit 0;
|
