1$OpenBSD: Getopt.pod,v 1.2 2023/05/21 13:44:56 espie Exp $ 2 3=head1 NAME 4 5OpenBSD::Getopt - Process single-characters switches 6 7=head1 SYNOPSIS 8 9 use OpenBSD::Getopt; 10 11 my $h = { 'v' => 12 sub() { 13 ++$opt_v; 14 }; 15 }; 16 getopts('oifv:', $h); 17 18=head1 DESCRIPTION 19 20This is similar to L<getopt(3)>. One call to C<getopts($optstring, $h)> parses 21all the options using the C<$optstring> as a list of simple switches 22(letter) and switches with arguments (letter followed by C<:>). 23 24Option values are written into the hash C<$h>. 25Contrary to L<getopt(3)>, C<$h-E<gt>{v}> is incremented each time the switch is 26seen, to allow for stuff like C<-vv>. 27 28Alternately, a code ref can be put into the hash for a given switch. 29When a switch is seen, the sub C<$foo> is called as 30C<&$foo()> for a simple switch and as C<&$foo(option_value)> for a switch 31with argument. 32