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package Catmandu::Importer::Modules;
use namespace::clean;
use Catmandu::Sane;
use Module::Info;
use File::Spec;
use File::Find::Rule;
use Moo;
with 'Catmandu::Importer';
has inc => (
is => 'ro',
lazy => 1,
default => sub { [@INC] },
coerce => sub {
my $inc = $_[0];
return $inc if ref $inc eq 'ARRAY';
return [split ',', $inc];
},
);
has namespace => (
is => 'ro',
default => sub { "" },
);
has max_depth => (
is => 'ro',
predicate => 1,
);
has pattern => (
is => 'ro',
);
sub generator {
my ($self) = @_;
sub {
state $pattern = $self->pattern;
state $dirs = do {
my @ns = grep length, split(/::/, $self->namespace);
my $inc = $self->inc;
[ map { File::Spec->catdir($_, @ns) } @$inc ];
};
state $dir = shift(@$dirs) // return;
state $rule = do {
my $r = File::Find::Rule->new->file->name('*.pm');
$r->maxdepth($self->max_depth) if $self->has_max_depth;
$r->start($dir);
};
while (1) {
if (defined(my $file = $rule->match)) {
my $name = join('::', File::Spec->splitdir(File::Spec->abs2rel($file, $dir)));
$name =~ s/\.pm$//;
$name = join('::', $self->namespace, $name) if $self->namespace;
next if defined $pattern && $name !~ $pattern;
my $info = Module::Info->new_from_file($file);
my $data = {
file => $file,
name => $name,
};
$data->{version} = $info->version if defined $info->version;
return $data;
} else {
$dir = shift(@$dirs) // return;
$rule->start($dir);
}
}
};
}
=head1 NAME
Catmandu::Importer::Modules - list installed perl modules in a given namespace
=head1 OPTIONS
=over
=item namespace
namespace for the packages to list
=item inc
list of library paths (defaults to C<@INC>)
=item max_depth
maximum depth to recurse into the namespace e.g. if the namespace is
Catmandu::Fix then Catmandu::Fix::add_field has a depth of 1 and
Catmandu::Fix::Condition::exists a depth of 2
=item pattern
filter modules by the given regex pattern
=back
=cut
1;
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