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# You may distribute under the terms of the GNU General Public License
#
# (C) Paul Evans, 2008-2014 -- leonerd@leonerd.org.uk
package Circle::Command;
use strict;
use warnings;
our $VERSION = '0.173320';
use Attribute::Storage qw( get_subattrs get_subattr find_subs_with_attr );
require mro;
sub _find_commands
{
my ( $obj, $cinv, $containedby ) = @_;
my @ret;
my %commands;
while( $obj ) {
my %subs = find_subs_with_attr( mro::get_linear_isa( ref $obj ), "Command_description",
matching => qr/^command_/,
);
foreach my $name ( keys %subs ) {
( my $commandname = $name ) =~ s/^command_//;
my $cv = $subs{$name};
next if $commands{$commandname};
my $subof = get_subattr( $cv, "Command_subof" );
next if $containedby and !$subof or
!$containedby and $subof or
$containedby and $subof and $containedby ne $subof;
my $attrs = get_subattrs( $cv );
$commands{$commandname} = 1;
push @ret, __PACKAGE__->new( %$attrs,
name => $commandname,
obj => $obj,
cv => $cv,
);
}
# Collect in parent too
$obj = $obj->can( "commandable_parent" ) && $obj->commandable_parent( $cinv );
}
return @ret;
}
sub root_commands
{
my $class = shift;
my ( $cinv ) = @_;
return map { $_->name => $_ } _find_commands( $cinv->invocant, $cinv, undef );
}
# Object stuff
sub new
{
my $class = shift;
my %attrs = @_;
$attrs{name} =~ s/_/ /g;
return bless \%attrs, $class;
}
sub sub_commands
{
my $self = shift;
my ( $cinv ) = @_;
return map { $_->shortname => $_ } _find_commands( $cinv->invocant, $cinv, $self->name );
}
sub name
{
my $self = shift; return $self->{name};
}
sub shortname
{
my $self = shift;
( split m/ /, $self->name )[-1];
}
sub is_default
{
my $self = shift; return $self->{Command_default};
}
sub desc
{
my $self = shift; return $self->{Command_description}[0] || "[no description]";
}
sub detail
{
my $self = shift; return $self->{Command_description}[1];
}
sub args
{
my $self = shift;
return unless $self->{Command_arg};
return @{ $self->{Command_arg} };
}
sub opts
{
my $self = shift;
return $self->{Command_opt};
}
sub default_sub
{
my $self = shift;
my ( $cinv ) = @_;
my %subs = $self->sub_commands( $cinv );
my @defaults = grep { $_->is_default } values %subs;
return $defaults[0] if @defaults == 1; # Only if it's unique
return;
}
sub invoke
{
my $self = shift; $self->{cv}->( $self->{obj}, @_ );
}
0x55AA;
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