1 package MooseX::Getopt::Basic;
4 use MooseX::Getopt::OptionTypeMap;
5 use MooseX::Getopt::Meta::Attribute;
6 use MooseX::Getopt::Meta::Attribute::NoGetopt;
9 use Getopt::Long (); # GLD uses it anyway, doesn't hurt
11 our $VERSION = '0.20';
12 our $AUTHORITY = 'cpan:STEVAN';
14 has ARGV => (is => 'rw', isa => 'ArrayRef', metaclass => "NoGetopt");
15 has extra_argv => (is => 'rw', isa => 'ArrayRef', metaclass => "NoGetopt");
17 # _getopt_spec() and _getoptions() are overrided by MooseX::Getopt::GLD.
20 my ($class, %params) = @_;
21 return $class->_traditional_spec(%params)
25 my ($class, undef, $opt_spec) = @_;
27 Getopt::Long::GetOptions(\%options, @$opt_spec);
28 return ( \%options, undef );
31 sub new_with_options {
32 my ($class, @params) = @_;
35 if($class->meta->does_role('MooseX::ConfigFromFile')) {
39 my $opt_parser = Getopt::Long::Parser->new( config => [ qw( pass_through ) ] );
40 $opt_parser->getoptions( "configfile=s" => \$configfile );
42 if(!defined $configfile) {
43 my $cfmeta = $class->meta->find_attribute_by_name('configfile');
44 $configfile = $cfmeta->default if $cfmeta->has_default;
47 if (defined $configfile) {
48 $config_from_file = eval {
49 $class->get_config_from_file($configfile);
52 die $@ unless $@ =~ /Specified configfile '\Q$configfile\E' does not exist/;
57 my $constructor_params = ( @params == 1 ? $params[0] : {@params} );
59 Carp::croak("Single parameters to new_with_options() must be a HASH ref")
60 unless ref($constructor_params) eq 'HASH';
62 my %processed = $class->_parse_argv(
64 $class->_attrs_to_options( $config_from_file )
66 params => $constructor_params,
69 my $params = $config_from_file ? { %$config_from_file, %{$processed{params}} } : $processed{params};
71 # did the user request usage information?
72 if ( $processed{usage} && ($params->{'?'} or $params->{help} or $params->{usage}) )
74 $class->_exit_with_usage($processed{usage});
78 ARGV => $processed{argv_copy},
79 extra_argv => $processed{argv},
80 %$constructor_params, # explicit params to ->new
81 %$params, # params from CLI
85 sub _exit_with_usage {
86 my ($self, $usage) = @_;
91 my ( $class, %params ) = @_;
93 local @ARGV = @{ $params{params}{argv} || \@ARGV };
95 my ( $opt_spec, $name_to_init_arg ) = $class->_getopt_spec(%params);
97 # Get a clean copy of the original @ARGV
98 my $argv_copy = [ @ARGV ];
102 my ( $parsed_options, $usage ) = eval {
103 local $SIG{__WARN__} = sub { push @err, @_ };
105 return $class->_get_options(\%params, $opt_spec);
108 die join "", grep { defined } @err, $@ if @err or $@;
110 # Get a copy of the Getopt::Long-mangled @ARGV
111 my $argv_mangled = [ @ARGV ];
113 my %constructor_args = (
115 $name_to_init_arg->{$_} => $parsed_options->{$_}
116 } keys %$parsed_options,
120 params => \%constructor_args,
121 argv_copy => $argv_copy,
122 argv => $argv_mangled,
123 ( defined($usage) ? ( usage => $usage ) : () ),
128 return "usage: %c %o";
131 sub _traditional_spec {
132 my ( $class, %params ) = @_;
134 my ( @options, %name_to_init_arg, %options );
136 foreach my $opt ( @{ $params{options} } ) {
137 push @options, $opt->{opt_string};
139 my $identifier = $opt->{name};
140 $identifier =~ s/\W/_/g; # Getopt::Long does this to all option names
142 $name_to_init_arg{$identifier} = $opt->{init_arg};
145 return ( \@options, \%name_to_init_arg );
148 sub _compute_getopt_attrs {
151 $_->does("MooseX::Getopt::Meta::Attribute::Trait")
155 !$_->does('MooseX::Getopt::Meta::Attribute::Trait::NoGetopt')
156 } $class->meta->get_all_attributes
159 sub _get_cmd_flags_for_attr {
160 my ( $class, $attr ) = @_;
162 my $flag = $attr->name;
166 if ($attr->does('MooseX::Getopt::Meta::Attribute::Trait')) {
167 $flag = $attr->cmd_flag if $attr->has_cmd_flag;
168 @aliases = @{ $attr->cmd_aliases } if $attr->has_cmd_aliases;
171 return ( $flag, @aliases );
174 sub _attrs_to_options {
176 my $config_from_file = shift || {};
180 foreach my $attr ($class->_compute_getopt_attrs) {
181 my ( $flag, @aliases ) = $class->_get_cmd_flags_for_attr($attr);
183 my $opt_string = join(q{|}, $flag, @aliases);
185 if ($attr->name eq 'configfile') {
188 elsif ($attr->has_type_constraint) {
189 my $type = $attr->type_constraint;
190 if (MooseX::Getopt::OptionTypeMap->has_option_type($type)) {
191 $opt_string .= MooseX::Getopt::OptionTypeMap->get_option_type($type)
197 init_arg => $attr->init_arg,
198 opt_string => $opt_string,
199 required => $attr->is_required && !$attr->has_default && !$attr->has_builder && !exists $config_from_file->{$attr->name},
201 # this "feature" was breaking because
202 # Getopt::Long::Descriptive would return
203 # the default value as if it was a command
204 # line flag, which would then override the
205 # one passed into a constructor.
206 # See 100_gld_default_bug.t for an example
208 #( ( $attr->has_default && ( $attr->is_default_a_coderef xor $attr->is_lazy ) ) ? ( default => $attr->default({}) ) : () ),
209 ( $attr->has_documentation ? ( doc => $attr->documentation ) : () ),
224 MooseX::Getopt::Basic - role to implement the basic functionality of
225 L<MooseX::Getopt> without GLD.
233 with 'MooseX::Getopt::Basic';
235 has 'out' => (is => 'rw', isa => 'Str', required => 1);
236 has 'in' => (is => 'rw', isa => 'Str', required => 1);
238 # ... rest of the class here
245 my $app = My::App->new_with_options();
246 # ... rest of the script here
248 ## on the command line
249 % perl my_app_script.pl --in file.input --out file.dump
253 This is like L<MooseX::Getopt> and can be used instead except that it
254 doesn't make use of L<Getopt::Long::Descriptive> (or "GLD" for short).
260 =item B<new_with_options>
262 See L<MooseX::Getopt> .
266 This returns the role meta object.
272 All complex software has bugs lurking in it, and this module is no
273 exception. If you find a bug please either email me, or add the bug
278 Stevan Little E<lt>stevan@iinteractive.comE<gt>
280 Brandon L. Black, E<lt>blblack@gmail.comE<gt>
282 Yuval Kogman, E<lt>nothingmuch@woobling.orgE<gt>
286 Ryan D Johnson, E<lt>ryan@innerfence.comE<gt>
288 Drew Taylor, E<lt>drew@drewtaylor.comE<gt>
290 Shlomi Fish E<lt>shlomif@cpan.orgE<gt>
292 =head1 COPYRIGHT AND LICENSE
294 Copyright 2007-2008 by Infinity Interactive, Inc.
296 L<http://www.iinteractive.com>
298 This library is free software; you can redistribute it and/or modify
299 it under the same terms as Perl itself.