Current File : //usr/share/perl5/vendor_perl/Pod/Perldoc/GetOptsOO.pm
package Pod::Perldoc::GetOptsOO;
use strict;
use vars qw($VERSION);
$VERSION = '3.28';
BEGIN { # Make a DEBUG constant ASAP
*DEBUG = defined( &Pod::Perldoc::DEBUG )
? \&Pod::Perldoc::DEBUG
: sub(){10};
}
sub getopts {
my($target, $args, $truth) = @_;
$args ||= \@ARGV;
$target->aside(
"Starting switch processing. Scanning arguments [@$args]\n"
) if $target->can('aside');
return unless @$args;
$truth = 1 unless @_ > 2;
DEBUG > 3 and print " Truth is $truth\n";
my $error_count = 0;
while( @$args and ($_ = $args->[0]) =~ m/^-(.)(.*)/s ) {
my($first,$rest) = ($1,$2);
if ($_ eq '--') { # early exit if "--"
shift @$args;
last;
}
if ($first eq '-' and $rest) { # GNU style long param names
($first, $rest) = split '=', $rest, 2;
}
my $method = "opt_${first}_with";
if( $target->can($method) ) { # it's argumental
if($rest eq '') { # like -f bar
shift @$args;
$target->warn( "Option $first needs a following argument!\n" ) unless @$args;
$rest = shift @$args;
} else { # like -fbar (== -f bar)
shift @$args;
}
DEBUG > 3 and print " $method => $rest\n";
$target->$method( $rest );
# Otherwise, it's not argumental...
} else {
if( $target->can( $method = "opt_$first" ) ) {
DEBUG > 3 and print " $method is true ($truth)\n";
$target->$method( $truth );
# Otherwise it's an unknown option...
} elsif( $target->can('handle_unknown_option') ) {
DEBUG > 3
and print " calling handle_unknown_option('$first')\n";
$error_count += (
$target->handle_unknown_option( $first ) || 0
);
} else {
++$error_count;
$target->warn( "Unknown option: $first\n" );
}
if($rest eq '') { # like -f
shift @$args
} else { # like -fbar (== -f -bar )
DEBUG > 2 and print " Setting args->[0] to \"-$rest\"\n";
$args->[0] = "-$rest";
}
}
}
$target->aside(
"Ending switch processing. Args are [@$args] with $error_count errors.\n"
) if $target->can('aside');
$error_count == 0;
}
1;
__END__
=head1 NAME
Pod::Perldoc::GetOptsOO - Customized option parser for Pod::Perldoc
=head1 SYNOPSIS
use Pod::Perldoc::GetOptsOO ();
Pod::Perldoc::GetOptsOO::getopts( $obj, \@args, $truth )
or die "wrong usage";
=head1 DESCRIPTION
Implements a customized option parser used for
L<Pod::Perldoc>.
Rather like Getopt::Std's getopts:
=over
=item Call Pod::Perldoc::GetOptsOO::getopts($object, \@ARGV, $truth)
=item Given -n, if there's a opt_n_with, it'll call $object->opt_n_with( ARGUMENT )
(e.g., "-n foo" => $object->opt_n_with('foo'). Ditto "-nfoo")
=item Otherwise (given -n) if there's an opt_n, we'll call it $object->opt_n($truth)
(Truth defaults to 1)
=item Otherwise we try calling $object->handle_unknown_option('n')
(and we increment the error count by the return value of it)
=item If there's no handle_unknown_option, then we just warn, and then increment
the error counter
=back
The return value of Pod::Perldoc::GetOptsOO::getopts is true if no errors,
otherwise it's false.
=head1 SEE ALSO
L<Pod::Perldoc>
=head1 COPYRIGHT AND DISCLAIMERS
Copyright (c) 2002-2007 Sean M. Burke.
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
This program is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of
merchantability or fitness for a particular purpose.
=head1 AUTHOR
Current maintainer: Mark Allen C<< <mallen@cpan.org> >>
Past contributions from:
brian d foy C<< <bdfoy@cpan.org> >>
Adriano R. Ferreira C<< <ferreira@cpan.org> >>,
Sean M. Burke C<< <sburke@cpan.org> >>
=cut
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