fixed minor bugs in demo scripts and run_stem

[urisagit/Stem.git] / bin / tail_demo

#!/usr/local/bin/perl -s

$line_cnt = 10 ;
$offset = 175 ;
$base_off = 0 ;
$xskip = ( $^O eq 'solaris' ) ? 600 : 500 ;

use File::Basename qw( basename );
$ENV{PATH} .= ':' . basename( $0 ) . ':.';
for my $prog qw( run_stem xterm telnet ) {
    die "Can't find $prog in PATH\n" if
        system( "which $prog >/dev/null 2>&1" ) != 0;
}

my @children ;

my $tail_dir = 'tail' ;

$SIG{ 'INT' } = \&cleanup ;

if ( $s ) {

	$ssfe = 'ssfe' ;
	$prompt = '-prompt Stem:' ;
	$echo = 'console_echo=1'
}

-d $tail_dir or mkdir $tail_dir, 0722 or
		die "can't create $tail_dir working directory" ;

foreach my $log ( qw( foo bar bar_status ) ) {
	unlink "$tail_dir/$log.log" ;
}


foreach $cmd ( split /\n/, <<EOT ) {
xterm -T Archive -n Archive -geometry 80x35+0+0 -e $ssfe $prompt run_stem $echo archive
xterm -T Monitor -n Monitor -geometry 80x35+$xskip+0 -e $ssfe $prompt run_stem $echo monitor
xterm -T Tail -n Tail -geometry 80x20+275+420
EOT

	print "$cmd\n" ;

	@cmd = split ' ', $cmd ;

	s/:/: / for @cmd ;

	chdir $tail_dir unless $cmd =~ /run_stem/ ;

	fork_exec( @cmd ) ;

	sleep 2 ;
}

1 while wait() != -1;

exit;



sub cleanup {

	print "clean up\n" ;

	kill 9, @children ;
	wait ;	
	exit ;

}

sub fork_exec {

	my( @exec ) = @_ ;

	if ( $pid = fork() ) {

		push @children, $pid ;
		return ;
	}

	exec @exec ;
}