Getopt::Lucid 0.16

Getopt::Lucid is a clear, readable syntax for command line processing.
SYNOPSIS
use Getopt::Lucid qw( :all );
# basic option specifications with aliases
@specs = (
Switch("version|V"),
Counter("verbose|v"),
Param("config|C"),
List("lib|l|I"),
Keypair("define"),
Switch("help|h")
);
$opt = Getopt::Lucid->getopt( @specs );
$verbosity = $opt->get_verbose;
@libs = $opt->get_lib;
%defs = $opt->get_define;
%all_options = $opt->options;
# advanced option specifications
@adv_spec = (
Param("input")->required, # required
Param("mode")->default("tcp"), # defaults
Param("host")->needs("port"), # dependencies
Param("port", qr/d+/ )->required, # regex validation
Param("config", sub { -r } ), # custom validation
Param("help")->anycase, # case insensitivity
);
# example with a config file
use Config::Std;
if ( -r $opt->get_config ) {
read_config( $opt->get_config() => my %config_hash );
$opt->merge_defaults( $config_hash{} );
}
The goal of this module is providing good code readability and clarity of intent for command-line option processing. While readability is a subjective standard, Getopt::Lucid relies on a more verbose, plain-English option specification as compared against the more symbolic approach of Getopt::Long.
Main features:
- Five option types: switches, counters, parameters, lists, and keypairs
- Three option styles: long, short (including bundled), and bare (without dashes)
- Specification of defaults, required options and option dependencies
- Validation of options with regexes or subroutines
- Negation of options on the command line
- Support for parsing any array, not just the default @ARGV
- Incorporation of external defaults (e.g. from a config file) with user control of precedence