#!/usr/bin/env perl

use strict;
use warnings;

use Pod::Usage;
use Getopt::Long;

use Physics::Unit::Script qw/run_script/;

my %opts;
my $help;

GetOptions(
  types    => \$opts{types},
  units    => \$opts{units},
  export   => \$opts{export},
  'help|?' => \$help,
);

pod2usage(0) if $help;

run_script(\%opts);

__END__

=head1 NAME

physics-unit - Helper script for the Physics::Unit Perl module

=head1 SYNOPSIS

  physics-unit meters            # Returns information about the unit 'meters'
  physics-unit -e                # Exports lists of units as HTML
  physics-unit --help/-h         # Shows a usage message

=head1 DESCRIPTION

L<Physics::Unit> is a Perl module for managing units and unit conversions. The C<physics-unit> script retrieves unit and type information from the main module for reference purposes. Do not use this script from your code, use the L<Physics::Unit> module instead. This script's interface is subject to change, the main module's API is much more stable.

=head1 OPTIONS AND ARGUMENTS

  physics-unit [options] [name(s)|expression(s)]

  If reserved words, unit or type names, or unit expressions, are given on the
  command line, this prints a block of information for each to STDOUT.  The
  options -e, -t, and -u, on the other hand, cause comprehensive lists of
  data to be dumped from the unit library.

  -e
  --export
      Export a complete list of known units and types as HTML documents.
      Prints the names of the created files to STDOUT, this allows:
        firefox `physics-unit -e`

  -h
  --help
      Shows a usage message and exits. Overrides all other options.

  -t
  --types
      Print a list of types (one per line) to STDOUT.

  -u
  --units
      Print a list of units (one per line) to STDOUT.

=head1 SEE ALSO

=over

=item *

L<Physics::Unit>

=back

=head1 AUTHOR

Joel Berger, E<lt>joel.a.berger@gmail.comE<gt>

=cut