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package CLI::Framework::Command::Help;
use base qw( CLI::Framework::Command::Meta );
use strict;
use warnings;
our $VERSION = 0.01;
#-------
sub usage_text {
q{
help [command name]: usage information for an individual command or the application itself
}
}
sub run {
my ($self, $opts, @args) = @_;
my $app = $self->get_app(); # metacommand is app-aware
my $usage;
my $command_name = shift @args;
# Recognize help requests that refer to the target command by an alias...
my %alias = $app->command_alias();
$command_name = $alias{$command_name} if $command_name && exists $alias{$command_name};
# First, attempt to get command-specific usage message...
if( $command_name ) {
# (do not show command-specific usage message for non-interactive
# commands when in interactive mode)
$usage = $app->usage( $command_name, @args )
unless( $app->get_interactivity_mode() && ! $app->is_interactive_command($command_name) );
}
# Fall back to application usage message...
$usage ||= $app->usage();
return $usage;
}
#-------
1;
__END__
=pod
=head1 NAME
CLI::Framework::Command::Help - CLIF built-in command to print application or
command-specific usage messages
=head1 SEE ALSO
L<Command usage()|CLI::Framework::Command/usage( $subcommand_name, @subcommand_chain )>
L<Application usage()|CLI::Framework::Application/usage( $command_name, @subcommand_chain )>
L<CLI::Framework::Command>
=cut
|
