xref: /freebsd-10-stable/contrib/ntp/scripts/ntptrace/ntptrace-opts

# EDIT THIS FILE WITH CAUTION  (ntptrace-opts)
#
# It has been AutoGen-ed  June  2, 2016 at 07:24:57 AM by AutoGen 5.18.5
# From the definitions    ntptrace-opts.def
# and the template file   perlopt

use Getopt::Long qw(GetOptionsFromArray);
Getopt::Long::Configure(qw(no_auto_abbrev no_ignore_case_always));

my $usage;

sub usage {
    my ($ret) = @_;
    print STDERR $usage;
    exit $ret;
}

sub paged_usage {
    my ($ret) = @_;
    my $pager = $ENV{PAGER} || '(less || more)';

    open STDOUT, "| $pager" or die "Can't fork a pager: $!";
    print $usage;

    exit $ret;
}

sub processOptions {
    my $args = shift;

    my $opts = {
        'numeric' => '',
        'max-hosts' => '99',
        'host' => '127.0.0.1',
        'help' => '', 'more-help' => ''
    };
    my $argument = '[host]';
    my $ret = GetOptionsFromArray($args, $opts, (
        'numeric|n', 'max-hosts|m=i', 'host|r=s',
        'help|?', 'more-help'));

    $usage = <<'USAGE';
ntptrace - Trace peers of an NTP server - Ver. 4.2.8p8
USAGE: ntptrace [ -<flag> [<val>] | --<name>[{=| }<val>] ]... [host]

    -n, --numeric                Print IP addresses instead of hostnames
    -m, --max-hosts=num          Maximum number of peers to trace
    -r, --host=str               Single remote host
    -?, --help                   Display usage information and exit
        --more-help              Pass the extended usage text through a pager

Options are specified by doubled hyphens and their name or by a single
hyphen and the flag character.
USAGE

    usage(0)       if $opts->{'help'};
    paged_usage(0) if $opts->{'more-help'};
    $_[0] = $opts;
    return $ret;
}

END { close STDOUT };