xref: /freebsd/contrib/ntp/scripts/calc_tickadj/calc_tickadj-opts (revision a466cc55373fc3cf86837f09da729535b57e69a1)

# EDIT THIS FILE WITH CAUTION  (calc_tickadj-opts)
#
# It has been AutoGen-ed  March  5, 2023 at 02:05:18 AM by AutoGen 5.18.16
# From the definitions    calc_tickadj-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 = {
        'drift-file' => '/etc/ntp/drift',
        'tick' => '',
        'help' => '', 'more-help' => ''
    };
    my $argument = '';
    my $ret = GetOptionsFromArray($args, $opts, (
        'drift-file|d=s', 'tick|t=i',
        'help|?', 'more-help'));

    $usage = <<'USAGE';
calc_tickadj - Calculates "optimal" value for tick given ntp drift file. - Ver. 4.2.8p15
USAGE: calc_tickadj [ -<flag> [<val>] | --<name>[{=| }<val>] ]...

    -d, --drift-file=str         Ntp drift file to use
    -t, --tick=num               Tick value of this 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 };