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lib/Acme/Module/Authors.pm  view on Meta::CPAN

package Acme::Module::Authors;

use strict;
require 5.006;
our $VERSION = 0.01;

my @modules;

# flag if we're in END { }
my $in_end = 0;

sub import {
    shift;
    unshift @INC, sub {
	my($self, $file) = @_;
	return if $in_end;
	push @modules, file2mod($file);
	return;
    };
}

sub file2mod {
    local $_ = shift;
    s/\.pm$//;
    s!/!::!g;
    return $_;
}

sub author_for {
    my $name = shift;
    my $module = CPAN::Shell->expand(Module => $name);

    # ignore perl-core pragmas like overload, constant, strict ...
    return if !$module or
	($name =~ /^[a-z]/ and $module->cpan_file =~ m!perl-[\d\.]+\.tar\.gz$!);

    my $author = CPAN::Shell->expand(Author => $module->userid);
    return $author->name;
}

END {
    $in_end = 1;
    require CPAN;
    local $CPAN::Frontend = 'Acme::Module::Authors::CPAN';
    my %authors;
    for my $module (@modules) {
	my $author = author_for($module) or next;
	push @{$authors{$author}}, $module;
    }
    local $" = ', ';
    print "This program runs thanks to:\n";
    print "  $_ for @{$authors{$_}}\n"
	for sort { @{$authors{$b}} <=> @{$authors{$a}} } keys %authors;
}

@Acme::Module::Authors::CPAN::ISA = qw(CPAN::Shell);
sub Acme::Module::Authors::CPAN::myprint { }

1;
__END__

=head1 NAME

Acme::Module::Authors - Thank you CPAN authors

=head1 SYNOPSIS

  use Acme::Module::Authors;
  # in END phase it'll print out author names of modules used