X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMooseX%2FGetopt%2FBasic.pm;h=5473d04abad4114f82bfef6e4c42115a55e8e0f5;hb=a20996695460dc338556f0435299555074c76c34;hp=33d90ef94b9af35d355e2d402c35ec21bb656907;hpb=ef47fe440114bcfc790464f79e476ef7defb0a67;p=gitmo%2FMooseX-Getopt.git diff --git a/lib/MooseX/Getopt/Basic.pm b/lib/MooseX/Getopt/Basic.pm index 33d90ef..5473d04 100644 --- a/lib/MooseX/Getopt/Basic.pm +++ b/lib/MooseX/Getopt/Basic.pm @@ -1,6 +1,21 @@ package MooseX::Getopt::Basic; use Moose::Role; +use MooseX::Getopt::OptionTypeMap; +use MooseX::Getopt::Meta::Attribute; +use MooseX::Getopt::Meta::Attribute::NoGetopt; +use Carp (); + +use Getopt::Long (); # GLD uses it anyway, doesn't hurt + +our $VERSION = '0.20'; +our $AUTHORITY = 'cpan:STEVAN'; + +has ARGV => (is => 'rw', isa => 'ArrayRef', metaclass => "NoGetopt"); +has extra_argv => (is => 'rw', isa => 'ArrayRef', metaclass => "NoGetopt"); + +# _getopt_spec() and _getoptions() are overrided by MooseX::Getopt::GLD. + sub _getopt_spec { my ($class, %params) = @_; return $class->_traditional_spec(%params) @@ -13,6 +28,183 @@ sub _get_options { return ( \%options, undef ); } +sub new_with_options { + my ($class, @params) = @_; + + my $config_from_file; + if($class->meta->does_role('MooseX::ConfigFromFile')) { + local @ARGV = @ARGV; + + my $configfile; + my $opt_parser = Getopt::Long::Parser->new( config => [ qw( pass_through ) ] ); + $opt_parser->getoptions( "configfile=s" => \$configfile ); + + if(!defined $configfile) { + my $cfmeta = $class->meta->find_attribute_by_name('configfile'); + $configfile = $cfmeta->default if $cfmeta->has_default; + } + + if(defined $configfile) { + $config_from_file = $class->get_config_from_file($configfile); + } + } + + my $constructor_params = ( @params == 1 ? $params[0] : {@params} ); + + Carp::croak("Single parameters to new_with_options() must be a HASH ref") + unless ref($constructor_params) eq 'HASH'; + + my %processed = $class->_parse_argv( + options => [ + $class->_attrs_to_options( $config_from_file ) + ], + params => $constructor_params, + ); + + my $params = $config_from_file ? { %$config_from_file, %{$processed{params}} } : $processed{params}; + + # did the user request usage information? + if ( $processed{usage} && ($params->{'?'} or $params->{help} or $params->{usage}) ) + { + $processed{usage}->die(); + } + + $class->new( + ARGV => $processed{argv_copy}, + extra_argv => $processed{argv}, + %$constructor_params, # explicit params to ->new + %$params, # params from CLI + ); +} + +sub _parse_argv { + my ( $class, %params ) = @_; + + local @ARGV = @{ $params{params}{argv} || \@ARGV }; + + my ( $opt_spec, $name_to_init_arg ) = $class->_getopt_spec(%params); + + # Get a clean copy of the original @ARGV + my $argv_copy = [ @ARGV ]; + + my @err; + + my ( $parsed_options, $usage ) = eval { + local $SIG{__WARN__} = sub { push @err, @_ }; + + return $class->_get_options(\%params, $opt_spec); + }; + + die join "", grep { defined } @err, $@ if @err or $@; + + # Get a copy of the Getopt::Long-mangled @ARGV + my $argv_mangled = [ @ARGV ]; + + my %constructor_args = ( + map { + $name_to_init_arg->{$_} => $parsed_options->{$_} + } keys %$parsed_options, + ); + + return ( + params => \%constructor_args, + argv_copy => $argv_copy, + argv => $argv_mangled, + ( defined($usage) ? ( usage => $usage ) : () ), + ); +} + +sub _usage_format { + return "usage: %c %o"; +} + +sub _traditional_spec { + my ( $class, %params ) = @_; + + my ( @options, %name_to_init_arg, %options ); + + foreach my $opt ( @{ $params{options} } ) { + push @options, $opt->{opt_string}; + + my $identifier = $opt->{name}; + $identifier =~ s/\W/_/g; # Getopt::Long does this to all option names + + $name_to_init_arg{$identifier} = $opt->{init_arg}; + } + + return ( \@options, \%name_to_init_arg ); +} + +sub _compute_getopt_attrs { + my $class = shift; + grep { + $_->does("MooseX::Getopt::Meta::Attribute::Trait") + or + $_->name !~ /^_/ + } grep { + !$_->does('MooseX::Getopt::Meta::Attribute::Trait::NoGetopt') + } $class->meta->get_all_attributes +} + +sub _get_cmd_flags_for_attr { + my ( $class, $attr ) = @_; + + my $flag = $attr->name; + + my @aliases; + + if ($attr->does('MooseX::Getopt::Meta::Attribute::Trait')) { + $flag = $attr->cmd_flag if $attr->has_cmd_flag; + @aliases = @{ $attr->cmd_aliases } if $attr->has_cmd_aliases; + } + + return ( $flag, @aliases ); +} + +sub _attrs_to_options { + my $class = shift; + my $config_from_file = shift || {}; + + my @options; + + foreach my $attr ($class->_compute_getopt_attrs) { + my ( $flag, @aliases ) = $class->_get_cmd_flags_for_attr($attr); + + my $opt_string = join(q{|}, $flag, @aliases); + + if ($attr->name eq 'configfile') { + $opt_string .= '=s'; + } + elsif ($attr->has_type_constraint) { + my $type = $attr->type_constraint; + if (MooseX::Getopt::OptionTypeMap->has_option_type($type)) { + $opt_string .= MooseX::Getopt::OptionTypeMap->get_option_type($type) + } + } + + push @options, { + name => $flag, + init_arg => $attr->init_arg, + opt_string => $opt_string, + required => $attr->is_required && !$attr->has_default && !$attr->has_builder && !exists $config_from_file->{$attr->name}, + # NOTE: + # this "feature" was breaking because + # Getopt::Long::Descriptive would return + # the default value as if it was a command + # line flag, which would then override the + # one passed into a constructor. + # See 100_gld_default_bug.t for an example + # - SL + #( ( $attr->has_default && ( $attr->is_default_a_coderef xor $attr->is_lazy ) ) ? ( default => $attr->default({}) ) : () ), + ( $attr->has_documentation ? ( doc => $attr->documentation ) : () ), + } + } + + return @options; +} + +no Moose::Role; 1; + 1; =pod @@ -208,9 +400,6 @@ and then return a newly constructed object. The special parameter C, if specified should point to an array reference with an array to use instead of C<@ARGV>. -The paramater C, if specified and a true value will disable -the use of L . - If L fails (due to invalid arguments), C will throw an exception.