NAME

Getopt::Compact::WithCmd - sub-command friendly, like Getopt::Compact

SYNOPSIS

inside foo.pl:

  use Getopt::Compact::WithCmd;
  
  my $go = Getopt::Compact::WithCmd->new(
     name          => 'foo',
     version       => '0.1',
     args          => 'FILE',
     global_struct => [
        [ [qw/f force/], 'force overwrite', '!', \my $force ],
     ],
     command_struct => {
        get => {
            options     => [
                [ [qw/d dir/], 'dest dir', '=s', undef, { default => '.' } ],
                [ [qw/o output/], 'output file name', '=s', undef, { required => 1 }],
            ],
            desc        => 'get file from url',
            args        => 'url',
            other_usage => 'blah blah blah',
        },
        remove => {
            ...
        }
     },
  );
  
  my $opts = $go->opts;
  my $cmd  = $go->command;
  
  if ($cmd eq 'get') {
      my $url = shift @ARGV;
  }

how will be like this:

  $ ./foo.pl -f get -o bar.html http://example.com/

usage, running the command './foo.pl -x' results in the following output:

  $ ./foo.pl -x
  Unknown option: x
  foo v0.1
  usage: foo.pl [options] COMMAND FILE
  
  options:
     -h, --help           This help message
     -f, --force   Bool   Force overwrite
  
  Implemented commands are:
     get   Get file from url
  
  See 'foo.pl help COMMAND' for more information on a specific command.

in addition, running the command './foo.pl get' results in the following output:

  $ ./foo.pl get
  `--output` option must be specified
  foo v0.1
  usage: foo.pl get [options] url
  
  options:
     -h, --help                                     This help message
     -d, --dir      Str            (default: '.')   Dest dir
     -o, --output   Str (required)                  Output file name
  
  blah blah blah

DESCRIPTION

Getopt::Compact::WithCmd is yet another Getopt::* module. This module is respected Getopt::Compact. This module is you can define of git-like option. In addition, usage can be set at the same time.

METHODS

new(%args)

Create an object. The option most Getopt::Compact compatible. But struct is cannot use.

The new %args are:

"global_struct($arrayref)"

This option is sets common options across commands. This option value is Getopt::Compact compatible. In addition, extended to other values can be set.

  use Getopt::Compact::WithCmd;
  my $go = Getopt::Compact::WithCmd->new(
      global_struct => [
          [ $name_spec_arrayref, $description_scalar, $argument_spec_scalar, \$destination_scalar, $opt_hashref ],
          [ ... ]
      ],
  );

And you can also write in hash style.

  use Getopt::Compact::WithCmd;
  my $go = Getopt::Compact::WithCmd->new(
      global_struct => {
          $name_scalar => {
              alias => $name_spec_arrayref,
              desc  => $description_scalar,
              type  => $argument_spec_scalar,
              dest  => \$destination_scalar,
              opts  => $opt_hashref,
          },
          $other_name_scalar => {
              ...
          },
      },
  );

$argument_spec_scalar can be set value are Getopt::Long's option specifications. And you can also specify the following readable style:

  Bool     # eq !
  Incr     # eq +
  Str      # eq =s
  Int      # eq =i
  Num      # eq =f
  ExNum    # eq =o

In addition, Array and Hash type are:

  Array[Str] # eq =s@
  Hash[Int]  # eq =i%
  ...

$opt_hasref are:

  {
      default  => $value, # default value
      required => $bool,
  }

"command_struct($hashref)"

This option is sets sub-command and options.

  use Getopt::Compact::WithCmd;
  my $go = Getopt::Compact::WithCmd->new(
      command_struct => {
          $command => {
              options        => $options,
              args           => $args,
              desc           => $description,
              other_usage    => $other_usage,
              command_struct => $command_struct,
          },
      },
  );

$options

This value is compatible to "global_struct".

$args

command args.

$description

command description.

$other_usage

other usage message. be added to the end of the usage message.

$command_struct

support nesting.

  use Getopt::Compact::WithCmd;
  my $go = Getopt::Compact::WithCmd->new(
      command_struct => {
          $command => {
              options        => $options,
              args           => $args,
              desc           => $description,
              other_usage    => $other_usage,
              command_struct => {
                  $sub_command => {
                      options => ...
                  },
              },
          },
      },
  );

  # will run cmd:
  $ ./foo.pl $command $sub_command ...

add_type($new_type, $src_type, $code_ref);

This method is additional your own type. You must be call before new() method.

  use JSON;
  use Data::Dumper;

  Getopt::Compact::WithCmd->add_type(JSON => Str => sub { decode_json(shift) });
  my $go = Getopt::Compact::WithCmd->new(
      global_struct => {
          from_json => {
              type => 'JSON',
          },
      },
  );
  my $data = $go->opts->{from_json};
  print Dumper $data;

  # will run cmd:
  $ ./add_type.pl --from_json '{"foo":"bar"}'
  $VAR1 = {
            'foo' => 'bar'
          };

new_from_array(\@myopts, %args);

"new_from_array" can be used to parse options from an arbitrary array.

  $go = Getopt::Compact::WithCmd->new_from_array(\@myopts, ...);

new_from_string($option_string, %args);

"new_from_string" can be used to parts options from an arbitrary string.

This method using Text::ParseWords on internal.

  $go = Getopt::Compact::WithCmd->new_from_string('--foo bar baz', ...);

opts

Returns a hashref of options keyed by option name. Return value is merged global options and command options.

command

Gets sub-command name.

  # inside foo.pl
  use Getopt::Compact::WithCmd;
  
  my $go = Getopt::Compact::WithCmd->new(
     command_struct => {
        bar => {},
     },
  );
  
  print "command: ", $go->command, "\n";
  
  # running the command
  $ ./foo.pl bar
  bar

commands

Get sub commands. Returned value is ARRAYREF.

  # inside foo.pl
  use Getopt::Compact::WithCmd;
  
  my $go = Getopt::Compact::WithCmd->new(
     command_struct => {
        bar => {
            command_struct => {
                baz => {},
            },
        },
     },
  );
  
  print join(", ", @{$go->commands}), "\n";
  
  # running the command
  $ ./foo.pl bar baz
  bar, baz

status

This is a true value if the command line was processed successfully. Otherwise it returns a false result.

  $go->status ? "success" : "fail";

is_success

Alias of "status"

  $go->is_success # == $go->status

usage

Gets usage message.

  my $message = $go->usage;
  my $message = $go->usage($target_command_name); # must be implemented command.

show_usage

Display usage message and exit.

  $go->show_usage;
  $go->show_usage($target_command_name);

completion

Gets shell completion string.

  my $comp = $go->completion('bash');

NOTICE: completion() supports only one nested level of "command_struct". completion() supports only bash.

show_completion

Display completion string and exit.

  $go->show_completion('bash');

error

Return value is an error message or empty string.

  $go->error;

args

Return value is array reference to any remaining arguments.

  $go->args # like \@ARGV

pod2usage

Not implemented.

AUTHOR

xaicron <xaicron {at} cpan.org>

COPYRIGHT

LICENSE

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.