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# This module is part of debbugs, and is released under the terms of
# the GPL version 3, or any later version (at your option). See the
# file README and COPYING for more information.
# Copyright 2017 by Don Armstrong <don@donarmstrong.com>.
package Debbugs::Command;
=head1 NAME
Debbugs::Command -- Handle multiple subcommand-style commands
=head1 SYNOPSIS
use Debbugs::Command;
=head1 DESCRIPTION
=head1 BUGS
None known.
=cut
use warnings;
use strict;
use vars qw($VERSION $DEBUG %EXPORT_TAGS @EXPORT_OK @EXPORT);
use base qw(Exporter);
BEGIN{
$VERSION = '0.1';
$DEBUG = 0 unless defined $DEBUG;
@EXPORT = ();
%EXPORT_TAGS = (commands => [qw(handle_main_arguments),
qw(handle_subcommand_arguments)
],
);
@EXPORT_OK = ();
Exporter::export_ok_tags(keys %EXPORT_TAGS);
$EXPORT_TAGS{all} = [@EXPORT_OK];
}
use Getopt::Long qw(:config no_ignore_case);
use Pod::Usage qw(pod2usage);
=head1 Command processing (:commands)
Functions which parse arguments for commands (exportable with
C<:commands>)
=over
=item handle_main_arguments(
=cut
sub handle_main_arguments {
my ($options,@args) = @_;
Getopt::Long::Configure('pass_through');
GetOptions($options,@args);
Getopt::Long::Configure('default');
return $options;
}
sub handle_subcommand_arguments {
my ($argv,$args,$subopt) = @_;
$subopt //= {};
Getopt::Long::GetOptionsFromArray($argv,
$subopt,
keys %{$args},
);
my @usage_errors;
for my $arg (keys %{$args}) {
next unless $args->{$arg};
my $r_arg = $arg; # real argument name
$r_arg =~ s/[=\|].+//g;
if (not defined $subopt->{$r_arg}) {
push @usage_errors, "You must give a $r_arg option";
}
}
pod2usage(join("\n",@usage_errors)) if @usage_errors;
return $subopt;
}
=back
=cut
1;
__END__
# Local Variables:
# indent-tabs-mode: nil
# cperl-indent-level: 4
# End:
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