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- package Module::Build::ConfigData;
- use strict;
- my $arrayref = eval do {local $/; <DATA>}
- or die "Couldn't load ConfigData data: $@";
- close DATA;
- my ($config, $features, $auto_features) = @$arrayref;
-
- sub config { $config->{$_[1]} }
-
- sub set_config { $config->{$_[1]} = $_[2] }
- sub set_feature { $features->{$_[1]} = 0+!!$_[2] } # Constrain to 1 or 0
-
- sub auto_feature_names { grep !exists $features->{$_}, keys %$auto_features }
-
- sub feature_names {
- my @features = (keys %$features, auto_feature_names());
- @features;
- }
-
- sub config_names { keys %$config }
-
- sub write {
- my $me = __FILE__;
- require IO::File;
- require Data::Dumper;
-
- my $mode_orig = (stat $me)[2] & 07777;
- chmod($mode_orig | 0222, $me); # Make it writeable
- my $fh = IO::File->new($me, 'r+') or die "Can't rewrite $me: $!";
- seek($fh, 0, 0);
- while (<$fh>) {
- last if /^__DATA__$/;
- }
- die "Couldn't find __DATA__ token in $me" if eof($fh);
-
- local $Data::Dumper::Terse = 1;
- seek($fh, tell($fh), 0);
- $fh->print( Data::Dumper::Dumper([$config, $features, $auto_features]) );
- truncate($fh, tell($fh));
- $fh->close;
-
- chmod($mode_orig, $me)
- or warn "Couldn't restore permissions on $me: $!";
- }
-
- sub feature {
- my ($package, $key) = @_;
- return $features->{$key} if exists $features->{$key};
-
- my $info = $auto_features->{$key} or return 0;
-
- # Under perl 5.005, each(%$foo) isn't working correctly when $foo
- # was reanimated with Data::Dumper and eval(). Not sure why, but
- # copying to a new hash seems to solve it.
- my %info = %$info;
-
- require Module::Build; # XXX should get rid of this
- while (my ($type, $prereqs) = each %info) {
- next if $type eq 'description' || $type eq 'recommends';
-
- my %p = %$prereqs; # Ditto here.
- while (my ($modname, $spec) = each %p) {
- my $status = Module::Build->check_installed_status($modname, $spec);
- if ((!$status->{ok}) xor ($type =~ /conflicts$/)) { return 0; }
- }
- }
- return 1;
- }
-
-
- =head1 NAME
-
- Module::Build::ConfigData - Configuration for Module::Build
-
-
- =head1 SYNOPSIS
-
- use Module::Build::ConfigData;
- $value = Module::Build::ConfigData->config('foo');
- $value = Module::Build::ConfigData->feature('bar');
-
- @names = Module::Build::ConfigData->config_names;
- @names = Module::Build::ConfigData->feature_names;
-
- Module::Build::ConfigData->set_config(foo => $new_value);
- Module::Build::ConfigData->set_feature(bar => $new_value);
- Module::Build::ConfigData->write; # Save changes
-
-
- =head1 DESCRIPTION
-
- This module holds the configuration data for the C<Module::Build>
- module. It also provides a programmatic interface for getting or
- setting that configuration data. Note that in order to actually make
- changes, you'll have to have write access to the C<Module::Build::ConfigData>
- module, and you should attempt to understand the repercussions of your
- actions.
-
-
- =head1 METHODS
-
- =over 4
-
- =item config($name)
-
- Given a string argument, returns the value of the configuration item
- by that name, or C<undef> if no such item exists.
-
- =item feature($name)
-
- Given a string argument, returns the value of the feature by that
- name, or C<undef> if no such feature exists.
-
- =item set_config($name, $value)
-
- Sets the configuration item with the given name to the given value.
- The value may be any Perl scalar that will serialize correctly using
- C<Data::Dumper>. This includes references, objects (usually), and
- complex data structures. It probably does not include transient
- things like filehandles or sockets.
-
- =item set_feature($name, $value)
-
- Sets the feature with the given name to the given boolean value. The
- value will be converted to 0 or 1 automatically.
-
- =item config_names()
-
- Returns a list of all the names of config items currently defined in
- C<Module::Build::ConfigData>, or in scalar context the number of items.
-
- =item feature_names()
-
- Returns a list of all the names of features currently defined in
- C<Module::Build::ConfigData>, or in scalar context the number of features.
-
- =item auto_feature_names()
-
- Returns a list of all the names of features whose availability is
- dynamically determined, or in scalar context the number of such
- features. Does not include such features that have later been set to
- a fixed value.
-
- =item write()
-
- Commits any changes from C<set_config()> and C<set_feature()> to disk.
- Requires write access to the C<Module::Build::ConfigData> module.
-
- =back
-
-
- =head1 AUTHOR
-
- C<Module::Build::ConfigData> was automatically created using C<Module::Build>.
- C<Module::Build> was written by Ken Williams, but he holds no
- authorship claim or copyright claim to the contents of C<Module::Build::ConfigData>.
-
- =cut
-
- __DATA__
-
- [
- {},
- {},
- {
- 'YAML_support' => {
- 'requires' => {
- 'YAML' => ' >= 0.35, != 0.49_01 '
- },
- 'description' => 'Use YAML.pm to write META.yml files'
- },
- 'manpage_support' => {
- 'requires' => {
- 'Pod::Man' => 0
- },
- 'description' => 'Create Unix man pages'
- },
- 'C_support' => {
- 'requires' => {
- 'ExtUtils::CBuilder' => '0.15'
- },
- 'recommends' => {
- 'ExtUtils::ParseXS' => '1.02'
- },
- 'description' => 'Compile/link C & XS code'
- },
- 'HTML_support' => {
- 'requires' => {
- 'Pod::Html' => 0
- },
- 'description' => 'Create HTML documentation'
- }
- }
- ]
-