NAME

Catmandu::Cmd - A base class for extending the Catmandu command line

SYNOPSIS

# to create a command:
$ catmandu hello_world

# you need a package:
package Catmandu::Cmd::hello_world;
use parent 'Catmandu::Cmd';

sub command_opt_spec {
   (
       [ "greeting|g=s", "provide a greeting text" ],
   );
}

sub description {
   <<EOS;
examples:

catmandu hello_world --greeting "Hoi"

options:
EOS
}

sub command {
   my ($self, $opts, $args) = @_;
   my $greeting = $opts->greeting // 'Hello';
   print "$greeting, World!\n"
}

=head1 NAME

Catmandu::Cmd::hello_world - prints a funny line

=cut

DESCRIPTION

Catmandu:Cmd is a base class to extend the commands that can be provided for the 'catmandu' command line tools. New catmandu commands should be defined in the Catmandu::Cmd namespace and extend Catmandu::Cmd.

Every command needs to implement 4 things:

* command_opt_spec - which should return an array of command options with documentation
* description - a long description of the command
* command - the body which is executed
* head1 NAME - a short description of the command

METHODS

log()

Access to the logger

command_opt_spec()

This method should be overridden to provide option specifications. (This is list of arguments passed to describe_options from Getopt::Long::Descriptive, after the first.)

If not overridden, it returns an empty list.

description()

This method should return a string containing the long documentation of the command

command()

This method does whatever it is the command should do! It is passed a hash reference of the parsed command-line options and an array reference of left over arguments.

DOCUMENTATION

At least provide for every command a NAME documentation

SEE ALSO

Catmandu::Cmd::config , Catmandu::Cmd::convert , Catmandu::Cmd::count , Catmandu::Cmd::data , Catmandu::Cmd::delete , Catmandu::Cmd::export, Catmandu::Cmd::import , Catmandu::Cmd::move , Catmandu::Cmd::run