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inc/Module/AutoInstall.pm  view on Meta::CPAN

# load a module and return the version it reports
sub _load {
    my $mod  = pop;    # class/instance doesn't matter
    my $file = $mod;

    $file =~ s|::|/|g;
    $file .= '.pm';

    local $@;
    return eval { require $file; $mod->VERSION } || ( $@ ? undef: 0 );
}

# Load CPAN.pm and it's configuration
sub _load_cpan {
    return if $CPAN::VERSION;
    require CPAN;
    if ( $CPAN::HandleConfig::VERSION ) {
        # Newer versions of CPAN have a HandleConfig module
        CPAN::HandleConfig->load;
    } else {

inc/Module/AutoInstall.pm  view on Meta::CPAN

    $cur =~ s/\s+$//;

    # check for version numbers that are not in decimal format
    if ( ref($cur) or ref($min) or $cur =~ /v|\..*\./ or $min =~ /v|\..*\./ ) {
        if ( ( $version::VERSION or defined( _load('version') )) and
             version->can('new') 
            ) {

            # use version.pm if it is installed.
            return (
                ( version->new($cur) >= version->new($min) ) ? $cur : undef );
        }
        elsif ( $Sort::Versions::VERSION or defined( _load('Sort::Versions') ) )
        {

            # use Sort::Versions as the sorting algorithm for a.b.c versions
            return ( ( Sort::Versions::versioncmp( $cur, $min ) != -1 )
                ? $cur
                : undef );
        }

        warn "Cannot reliably compare non-decimal formatted versions.\n"
          . "Please install version.pm or Sort::Versions.\n";
    }

    # plain comparison
    local $^W = 0;    # shuts off 'not numeric' bugs
    return ( $cur >= $min ? $cur : undef );
}

# nothing; this usage is deprecated.
sub main::PREREQ_PM { return {}; }

sub _make_args {
    my %args = @_;

    $args{PREREQ_PM} = { %{ $args{PREREQ_PM} || {} }, @Existing, @Missing }
      if $UnderCPAN or $TestOnly;