[perl5.git] / lib / CPAN.pm

package CPAN;
use vars qw{$Try_autoload
            $Revision
	    $META $Signal $Cwd $End
	    $Suppress_readline
	    $Frontend  $Defaultsite
	   }; #};

$VERSION = '1.56';

# $Id: CPAN.pm,v 1.303 2000/08/01 15:57:15 k Exp $

# only used during development:
$Revision = "";
# $Revision = "[".substr(q$Revision: 1.303 $, 10)."]";

use Carp ();
use Config ();
use Cwd ();
use DirHandle;
use Exporter ();
use ExtUtils::MakeMaker (); # $SelfLoader::DEBUG=1;
use File::Basename ();
use File::Copy ();
use File::Find;
use File::Path ();
use FileHandle ();
use Safe ();
use Text::ParseWords ();
use Text::Wrap;
use File::Spec;
no lib "."; # we need to run chdir all over and we would get at wrong
            # libraries there

END { $End++; &cleanup; }

%CPAN::DEBUG = qw[
		  CPAN              1
		  Index             2
		  InfoObj           4
		  Author            8
		  Distribution     16
		  Bundle           32
		  Module           64
		  CacheMgr        128
		  Complete        256
		  FTP             512
		  Shell          1024
		  Eval           2048
		  Config         4096
		  Tarzip         8192
];

$CPAN::DEBUG ||= 0;
$CPAN::Signal ||= 0;
$CPAN::Frontend ||= "CPAN::Shell";
$CPAN::Defaultsite ||= "ftp://ftp.perl.org/pub/CPAN";

package CPAN;
use vars qw($VERSION @EXPORT $AUTOLOAD $DEBUG $META $HAS_USABLE $term);
use strict qw(vars);

@CPAN::ISA = qw(CPAN::Debug Exporter);

@EXPORT = qw(
	     autobundle bundle expand force get cvs_import
	     install make readme recompile shell test clean
	    );

#-> sub CPAN::AUTOLOAD ;
sub AUTOLOAD {
    my($l) = $AUTOLOAD;
    $l =~ s/.*:://;
    my(%EXPORT);
    @EXPORT{@EXPORT} = '';
    CPAN::Config->load unless $CPAN::Config_loaded++;
    if (exists $EXPORT{$l}){
	CPAN::Shell->$l(@_);
    } else {
	my $ok = CPAN::Shell->try_dot_al($AUTOLOAD);
	if ($ok) {
	    goto &$AUTOLOAD;
#	} else {
#	    $CPAN::Frontend->mywarn("Could not autoload $AUTOLOAD");
	}
	$CPAN::Frontend->mywarn(qq{Unknown command "$AUTOLOAD". }.
				qq{Type ? for help.
});
    }
}

#-> sub CPAN::shell ;
sub shell {
    my($self) = @_;
    $Suppress_readline = ! -t STDIN unless defined $Suppress_readline;
    CPAN::Config->load unless $CPAN::Config_loaded++;

    my $prompt = "cpan> ";
    local($^W) = 1;
    unless ($Suppress_readline) {
	require Term::ReadLine;
#	import Term::ReadLine;
	$term = Term::ReadLine->new('CPAN Monitor');
	if ($term->ReadLine eq "Term::ReadLine::Gnu") {
	    my $attribs = $term->Attribs;
#	     $attribs->{completion_entry_function} =
#		 $attribs->{'list_completion_function'};
	     $attribs->{attempted_completion_function} = sub {
		 &CPAN::Complete::gnu_cpl;
	     }
#	    $attribs->{completion_word} =
#		[qw(help me somebody to find out how
#                    to use completion with GNU)];
	} else {
	    $readline::rl_completion_function =
		$readline::rl_completion_function = 'CPAN::Complete::cpl';
	}
	# $term->OUT is autoflushed anyway
	my $odef = select STDERR;
	$| = 1;
	select STDOUT;
	$| = 1;
	select $odef;
    }

    no strict;
    $META->checklock();
    my $getcwd;
    $getcwd = $CPAN::Config->{'getcwd'} || 'cwd';
    my $cwd = CPAN->$getcwd();
    my $try_detect_readline;
    $try_detect_readline = $term->ReadLine eq "Term::ReadLine::Stub" if $term;
    my $rl_avail = $Suppress_readline ? "suppressed" :
	($term->ReadLine ne "Term::ReadLine::Stub") ? "enabled" :
	    "available (try ``install Bundle::CPAN'')";

    $CPAN::Frontend->myprint(
			     qq{
cpan shell -- CPAN exploration and modules installation (v$CPAN::VERSION$CPAN::Revision)
ReadLine support $rl_avail

}) unless $CPAN::Config->{'inhibit_startup_message'} ;
    my($continuation) = "";
    while () {
	if ($Suppress_readline) {
	    print $prompt;
	    last unless defined ($_ = <> );
	    chomp;
	} else {
	    last unless defined ($_ = $term->readline($prompt));
	}
	$_ = "$continuation$_" if $continuation;
	s/^\s+//;
	next if /^$/;
	$_ = 'h' if /^\s*\?/;
	if (/^(?:q(?:uit)?|bye|exit)$/i) {
	    last;
	} elsif (s/\\$//s) {
	    chomp;
	    $continuation = $_;
	    $prompt = "    > ";
	} elsif (/^\!/) {
	    s/^\!//;
	    my($eval) = $_;
	    package CPAN::Eval;
	    use vars qw($import_done);
	    CPAN->import(':DEFAULT') unless $import_done++;
	    CPAN->debug("eval[$eval]") if $CPAN::DEBUG;
	    eval($eval);
	    warn $@ if $@;
	    $continuation = "";
	    $prompt = "cpan> ";
	} elsif (/./) {
	    my(@line);
	    if ($] < 5.00322) { # parsewords had a bug until recently
		@line = split;
	    } else {
		eval { @line = Text::ParseWords::shellwords($_) };
		warn($@), next if $@;
	    }
	    $CPAN::META->debug("line[".join("|",@line)."]") if $CPAN::DEBUG;
	    my $command = shift @line;
	    eval { CPAN::Shell->$command(@line) };
	    warn $@ if $@;
	    chdir $cwd;
	    $CPAN::Frontend->myprint("\n");
	    $continuation = "";
	    $prompt = "cpan> ";
	}
    } continue {
      $Signal=0;
      CPAN::Queue->nullify_queue;
      if ($try_detect_readline) {
	if ($CPAN::META->has_inst("Term::ReadLine::Gnu")
	    ||
	    $CPAN::META->has_inst("Term::ReadLine::Perl")
	   ) {
	    delete $INC{"Term/ReadLine.pm"};
	    my $redef;
	    local($SIG{__WARN__}) = CPAN::Shell::dotdot_onreload(\$redef);
	    require Term::ReadLine;
	    $CPAN::Frontend->myprint("\n$redef subroutines in ".
				     "Term::ReadLine redefined\n");
	    goto &shell;
	}
      }
    }
}

package CPAN::CacheMgr;
@CPAN::CacheMgr::ISA = qw(CPAN::InfoObj CPAN);
use File::Find;

package CPAN::Config;
import ExtUtils::MakeMaker 'neatvalue';
use vars qw(%can $dot_cpan);

%can = (
  'commit' => "Commit changes to disk",
  'defaults' => "Reload defaults from disk",
  'init'   => "Interactive setting of all options",
);

package CPAN::FTP;
use vars qw($Ua $Thesite $Themethod);
@CPAN::FTP::ISA = qw(CPAN::Debug);

package CPAN::Complete;
@CPAN::Complete::ISA = qw(CPAN::Debug);

package CPAN::Index;
use vars qw($last_time $date_of_03);
@CPAN::Index::ISA = qw(CPAN::Debug);
$last_time ||= 0;
$date_of_03 ||= 0;

package CPAN::InfoObj;
@CPAN::InfoObj::ISA = qw(CPAN::Debug);

package CPAN::Author;
@CPAN::Author::ISA = qw(CPAN::InfoObj);

package CPAN::Distribution;
@CPAN::Distribution::ISA = qw(CPAN::InfoObj);

package CPAN::Bundle;
@CPAN::Bundle::ISA = qw(CPAN::Module);

package CPAN::Module;
@CPAN::Module::ISA = qw(CPAN::InfoObj);

package CPAN::Shell;
use vars qw($AUTOLOAD $redef @ISA);
@CPAN::Shell::ISA = qw(CPAN::Debug);

#-> sub CPAN::Shell::AUTOLOAD ;
sub AUTOLOAD {
    my($autoload) = $AUTOLOAD;
    my $class = shift(@_);
    # warn "autoload[$autoload] class[$class]";
    $autoload =~ s/.*:://;
    if ($autoload =~ /^w/) {
	if ($CPAN::META->has_inst('CPAN::WAIT')) {
	    CPAN::WAIT->$autoload(@_);
	} else {
	    $CPAN::Frontend->mywarn(qq{
Commands starting with "w" require CPAN::WAIT to be installed.
Please consider installing CPAN::WAIT to use the fulltext index.
For this you just need to type
    install CPAN::WAIT
});
	}
    } else {
	my $ok = CPAN::Shell->try_dot_al($AUTOLOAD);
	if ($ok) {
	    goto &$AUTOLOAD;
#	} else {
#	    $CPAN::Frontend->mywarn("Could not autoload $autoload");
	}
	$CPAN::Frontend->mywarn(qq{Unknown command '$autoload'. }.
				qq{Type ? for help.
});
    }
}

#-> CPAN::Shell::try_dot_al
sub try_dot_al {
    my($class,$autoload) = @_;
    return unless $CPAN::Try_autoload;
    # I don't see how to re-use that from the AutoLoader...
    my($name,$ok);
    # Braces used to preserve $1 et al.
    {
	my ($pkg,$func) = $autoload =~ /(.*)::([^:]+)$/;
	$pkg =~ s|::|/|g;
	if (defined($name=$INC{"$pkg.pm"}))
	    {
		$name =~ s|^(.*)$pkg\.pm$|$1auto/$pkg/$func.al|s;
		$name = undef unless (-r $name);
	    }
	unless (defined $name)
	    {
		$name = "auto/$autoload.al";
		$name =~ s|::|/|g;
	    }
    }
    my $save = $@;
    eval {local $SIG{__DIE__};require $name};
    if ($@) {
	if (substr($autoload,-9) eq '::DESTROY') {
	    *$autoload = sub {};
	    $ok = 1;
	} else {
	    if ($name =~ s{(\w{12,})\.al$}{substr($1,0,11).".al"}e){
		eval {local $SIG{__DIE__};require $name};
	    }
	    if ($@){
		$@ =~ s/ at .*\n//;
		Carp::croak $@;
	    } else {
		$ok = 1;
	    }
	}
    } else {

      $ok = 1;

    }
    $@ = $save;
#    my $lm = Carp::longmess();
#    warn "ok[$ok] autoload[$autoload] longmess[$lm]"; # debug
    return $ok;
}

#### autoloader is experimental
#### to try it we have to set $Try_autoload and uncomment
#### the use statement and uncomment the __END__ below
#### You also need AutoSplit 1.01 available. MakeMaker will
#### then build CPAN with all the AutoLoad stuff.
# use AutoLoader;
# $Try_autoload = 1;

if ($CPAN::Try_autoload) {
  my $p;
    for $p (qw(
	       CPAN::Author CPAN::Bundle CPAN::CacheMgr CPAN::Complete
	       CPAN::Config CPAN::Debug CPAN::Distribution CPAN::FTP
	       CPAN::FTP::netrc CPAN::Index CPAN::InfoObj CPAN::Module
		 )) {
	*{"$p\::AUTOLOAD"} = \&AutoLoader::AUTOLOAD;
    }
}

package CPAN::Tarzip;
use vars qw($AUTOLOAD @ISA);
@CPAN::Tarzip::ISA = qw(CPAN::Debug);

package CPAN::Queue;

# One use of the queue is to determine if we should or shouldn't
# announce the availability of a new CPAN module

# Now we try to use it for dependency tracking. For that to happen
# we need to draw a dependency tree and do the leaves first. This can
# easily be reached by running CPAN.pm recursively, but we don't want
# to waste memory and run into deep recursion. So what we can do is
# this:

# CPAN::Queue is the package where the queue is maintained. Dependencies
# often have high priority and must be brought to the head of the queue,
# possibly by jumping the queue if they are already there. My first code
# attempt tried to be extremely correct. Whenever a module needed
# immediate treatment, I either unshifted it to the front of the queue,
# or, if it was already in the queue, I spliced and let it bypass the
# others. This became a too correct model that made it impossible to put
# an item more than once into the queue. Why would you need that? Well,
# you need temporary duplicates as the manager of the queue is a loop
# that
#
#  (1) looks at the first item in the queue without shifting it off
#
#  (2) cares for the item
#
#  (3) removes the item from the queue, *even if its agenda failed and
#      even if the item isn't the first in the queue anymore* (that way
#      protecting against never ending queues)
#
# So if an item has prerequisites, the installation fails now, but we
# want to retry later. That's easy if we have it twice in the queue.
#
# I also expect insane dependency situations where an item gets more
# than two lives in the queue. Simplest example is triggered by 'install
# Foo Foo Foo'. People make this kind of mistakes and I don't want to
# get in the way. I wanted the queue manager to be a dumb servant, not
# one that knows everything.
#
# Who would I tell in this model that the user wants to be asked before
# processing? I can't attach that information to the module object,
# because not modules are installed but distributions. So I'd have to
# tell the distribution object that it should ask the user before
# processing. Where would the question be triggered then? Most probably
# in CPAN::Distribution::rematein.
# Hope that makes sense, my head is a bit off:-) -- AK

use vars qw{ @All };

sub new {
  my($class,$mod) = @_;
  my $self = bless {mod => $mod}, $class;
  push @All, $self;
  # my @all = map { $_->{mod} } @All;
  # warn "Adding Queue object for mod[$mod] all[@all]";
  return $self;
}

sub first {
  my $obj = $All[0];
  $obj->{mod};
}

sub delete_first {
  my($class,$what) = @_;
  my $i;
  for my $i (0..$#All) {
    if (  $All[$i]->{mod} eq $what ) {
      splice @All, $i, 1;
      return;
    }
  }
}

sub jumpqueue {
  my $class = shift;
  my @what = @_;
  my $obj;
  WHAT: for my $what (reverse @what) {
    my $jumped = 0;
    for (my $i=0; $i<$#All;$i++) { #prevent deep recursion
      if ($All[$i]->{mod} eq $what){
	$jumped++;
	if ($jumped > 100) { # one's OK if e.g. just processing now;
                             # more are OK if user typed it several
                             # times
	  $CPAN::Frontend->mywarn(
qq{Object [$what] queued more than 100 times, ignoring}
				 );
	  next WHAT;
	}
      }
    }
    my $obj = bless { mod => $what }, $class;
    unshift @All, $obj;
  }
}

sub exists {
  my($self,$what) = @_;
  my @all = map { $_->{mod} } @All;
  my $exists = grep { $_->{mod} eq $what } @All;
  # warn "Checking exists in Queue object for mod[$what] all[@all] exists[$exists]";
  $exists;
}

sub delete {
  my($self,$mod) = @_;
  @All = grep { $_->{mod} ne $mod } @All;
  # my @all = map { $_->{mod} } @All;
  # warn "Deleting Queue object for mod[$mod] all[@all]";
}

sub nullify_queue {
  @All = ();
}


package CPAN;

$META ||= CPAN->new; # In case we re-eval ourselves we need the ||

1;

# __END__ # uncomment this and AutoSplit version 1.01 will split it

#-> sub CPAN::autobundle ;
sub autobundle;
#-> sub CPAN::bundle ;
sub bundle;
#-> sub CPAN::expand ;
sub expand;
#-> sub CPAN::force ;
sub force;
#-> sub CPAN::install ;
sub install;
#-> sub CPAN::make ;
sub make;
#-> sub CPAN::clean ;
sub clean;
#-> sub CPAN::test ;
sub test;

#-> sub CPAN::all ;
sub all_objects {
    my($mgr,$class) = @_;
    CPAN::Config->load unless $CPAN::Config_loaded++;
    CPAN->debug("mgr[$mgr] class[$class]") if $CPAN::DEBUG;
    CPAN::Index->reload;
    values %{ $META->{$class} };
}
*all = \&all_objects;

# Called by shell, not in batch mode. Not clean XXX
#-> sub CPAN::checklock ;
sub checklock {
    my($self) = @_;
    my $lockfile = MM->catfile($CPAN::Config->{cpan_home},".lock");
    if (-f $lockfile && -M _ > 0) {
	my $fh = FileHandle->new($lockfile);
	my $other = <$fh>;
	$fh->close;
	if (defined $other && $other) {
	    chomp $other;
	    return if $$==$other; # should never happen
	    $CPAN::Frontend->mywarn(
				    qq{
There seems to be running another CPAN process ($other). Contacting...
});
	    if (kill 0, $other) {
		$CPAN::Frontend->mydie(qq{Other job is running.
You may want to kill it and delete the lockfile, maybe. On UNIX try:
    kill $other
    rm $lockfile
});
	    } elsif (-w $lockfile) {
		my($ans) =
		    ExtUtils::MakeMaker::prompt
			(qq{Other job not responding. Shall I overwrite }.
			 qq{the lockfile? (Y/N)},"y");
		$CPAN::Frontend->myexit("Ok, bye\n")
		    unless $ans =~ /^y/i;
	    } else {
		Carp::croak(
			    qq{Lockfile $lockfile not writeable by you. }.
			    qq{Cannot proceed.\n}.
			    qq{    On UNIX try:\n}.
			    qq{    rm $lockfile\n}.
			    qq{  and then rerun us.\n}
			   );
	    }
	}
    }
    my $dotcpan = $CPAN::Config->{cpan_home};
    eval { File::Path::mkpath($dotcpan);};
    if ($@) {
      # A special case at least for Jarkko.
      my $firsterror = $@;
      my $seconderror;
      my $symlinkcpan;
      if (-l $dotcpan) {
	$symlinkcpan = readlink $dotcpan;
	die "readlink $dotcpan failed: $!" unless defined $symlinkcpan;
	eval { File::Path::mkpath($symlinkcpan); };
	if ($@) {
	  $seconderror = $@;
	} else {
	  $CPAN::Frontend->mywarn(qq{
Working directory $symlinkcpan created.
});
	}
      }
      unless (-d $dotcpan) {
	my $diemess = qq{
Your configuration suggests "$dotcpan" as your
CPAN.pm working directory. I could not create this directory due
to this error: $firsterror\n};
	$diemess .= qq{
As "$dotcpan" is a symlink to "$symlinkcpan",
I tried to create that, but I failed with this error: $seconderror
} if $seconderror;
	$diemess .= qq{
Please make sure the directory exists and is writable.
};
	$CPAN::Frontend->mydie($diemess);
      }
    }
    my $fh;
    unless ($fh = FileHandle->new(">$lockfile")) {
	if ($! =~ /Permission/) {
	    my $incc = $INC{'CPAN/Config.pm'};
	    my $myincc = MM->catfile($ENV{HOME},'.cpan','CPAN','MyConfig.pm');
	    $CPAN::Frontend->myprint(qq{

Your configuration suggests that CPAN.pm should use a working
directory of
    $CPAN::Config->{cpan_home}
Unfortunately we could not create the lock file
    $lockfile
due to permission problems.

Please make sure that the configuration variable
    \$CPAN::Config->{cpan_home}
points to a directory where you can write a .lock file. You can set
this variable in either
    $incc
or
    $myincc

});
	}
	$CPAN::Frontend->mydie("Could not open >$lockfile: $!");
    }
    $fh->print($$, "\n");
    $self->{LOCK} = $lockfile;
    $fh->close;
    $SIG{'TERM'} = sub {
      &cleanup;
      $CPAN::Frontend->mydie("Got SIGTERM, leaving");
    };
    $SIG{'INT'} = sub {
      # no blocks!!!
      &cleanup if $Signal;
      $CPAN::Frontend->mydie("Got another SIGINT") if $Signal;
      print "Caught SIGINT\n";
      $Signal++;
    };

#       From: Larry Wall <larry@wall.org>
#       Subject: Re: deprecating SIGDIE
#       To: perl5-porters@perl.org
#       Date: Thu, 30 Sep 1999 14:58:40 -0700 (PDT)
#
#       The original intent of __DIE__ was only to allow you to substitute one
#       kind of death for another on an application-wide basis without respect
#       to whether you were in an eval or not.  As a global backstop, it should
#       not be used any more lightly (or any more heavily :-) than class
#       UNIVERSAL.  Any attempt to build a general exception model on it should
#       be politely squashed.  Any bug that causes every eval {} to have to be
#       modified should be not so politely squashed.
#
#       Those are my current opinions.  It is also my optinion that polite
#       arguments degenerate to personal arguments far too frequently, and that
#       when they do, it's because both people wanted it to, or at least didn't
#       sufficiently want it not to.
#
#       Larry

    $SIG{'__DIE__'} = \&cleanup;
    $self->debug("Signal handler set.") if $CPAN::DEBUG;
}

#-> sub CPAN::DESTROY ;
sub DESTROY {
    &cleanup; # need an eval?
}

#-> sub CPAN::cwd ;
sub cwd {Cwd::cwd();}

#-> sub CPAN::getcwd ;
sub getcwd {Cwd::getcwd();}

#-> sub CPAN::exists ;
sub exists {
    my($mgr,$class,$id) = @_;
    CPAN::Index->reload;
    ### Carp::croak "exists called without class argument" unless $class;
    $id ||= "";
    exists $META->{$class}{$id};
}

#-> sub CPAN::delete ;
sub delete {
  my($mgr,$class,$id) = @_;
  delete $META->{$class}{$id};
}

#-> sub CPAN::has_usable
# has_inst is sometimes too optimistic, we should replace it with this
# has_usable whenever a case is given
sub has_usable {
    my($self,$mod,$message) = @_;
    return 1 if $HAS_USABLE->{$mod};
    my $has_inst = $self->has_inst($mod,$message);
    return unless $has_inst;
    my $capabilities;
    $capabilities = {
                     LWP => [ # we frequently had "Can't locate object
                              # method "new" via package
                              # "LWP::UserAgent" at (eval 69) line
                              # 2006
                             sub {require LWP},
                             sub {require LWP::UserAgent},
                             sub {require HTTP::Request},
                             sub {require URI::URL},
                            ],
                     Net::FTP => [
                                  sub {require Net::FTP},
                                  sub {require Net::Config},
                                 ]
                    };
    if ($capabilities->{$mod}) {
      for my $c (0..$#{$capabilities->{$mod}}) {
        my $code = $capabilities->{$mod}[$c];
        my $ret = eval { &$code() };
        if ($@) {
          warn "DEBUG: c[$c]\$\@[$@]ret[$ret]";
          return;
        }
      }
    }
    return $HAS_USABLE->{$mod} = 1;
}

#-> sub CPAN::has_inst
sub has_inst {
    my($self,$mod,$message) = @_;
    Carp::croak("CPAN->has_inst() called without an argument")
	unless defined $mod;
    if (defined $message && $message eq "no"
        ||
        exists $CPAN::META->{dontload_hash}{$mod}
        ||
        exists $CPAN::Config->{dontload_hash}{$mod}
       ) {
      $CPAN::META->{dontload_hash}{$mod}||=1;
      return 0;
    }
    my $file = $mod;
    my $obj;
    $file =~ s|::|/|g;
    $file =~ s|/|\\|g if $^O eq 'MSWin32';
    $file .= ".pm";
    if ($INC{$file}) {
	# checking %INC is wrong, because $INC{LWP} may be true
	# although $INC{"URI/URL.pm"} may have failed. But as
	# I really want to say "bla loaded OK", I have to somehow
	# cache results.
	### warn "$file in %INC"; #debug
	return 1;
    } elsif (eval { require $file }) {
	# eval is good: if we haven't yet read the database it's
	# perfect and if we have installed the module in the meantime,
	# it tries again. The second require is only a NOOP returning
	# 1 if we had success, otherwise it's retrying

	$CPAN::Frontend->myprint("CPAN: $mod loaded ok\n");
	if ($mod eq "CPAN::WAIT") {
	    push @CPAN::Shell::ISA, CPAN::WAIT;
	}
	return 1;
    } elsif ($mod eq "Net::FTP") {
	warn qq{
  Please, install Net::FTP as soon as possible. CPAN.pm installs it for you
  if you just type
      install Bundle::libnet

};
	sleep 2;
    } elsif ($mod eq "MD5"){
	$CPAN::Frontend->myprint(qq{
  CPAN: MD5 security checks disabled because MD5 not installed.
  Please consider installing the MD5 module.

});
	sleep 2;
    } else {
	delete $INC{$file}; # if it inc'd LWP but failed during, say, URI
    }
    return 0;
}

#-> sub CPAN::instance ;
sub instance {
    my($mgr,$class,$id) = @_;
    CPAN::Index->reload;
    $id ||= "";
    $META->{$class}{$id} ||= $class->new(ID => $id );
}

#-> sub CPAN::new ;
sub new {
    bless {}, shift;
}

#-> sub CPAN::cleanup ;
sub cleanup {
  # warn "cleanup called with arg[@_] End[$End] Signal[$Signal]";
  local $SIG{__DIE__} = '';
  my($message) = @_;
  my $i = 0;
  my $ineval = 0;
  if (
      0 &&           # disabled, try reload cpan with it
      $] > 5.004_60  # thereabouts
     ) {
    $ineval = $^S;
  } else {
    my($subroutine);
    while ((undef,undef,undef,$subroutine) = caller(++$i)) {
      $ineval = 1, last if
	  $subroutine eq '(eval)';
    }
  }
  return if $ineval && !$End;
  return unless defined $META->{'LOCK'};
  return unless -f $META->{'LOCK'};
  unlink $META->{'LOCK'};
  # require Carp;
  # Carp::cluck("DEBUGGING");
  $CPAN::Frontend->mywarn("Lockfile removed.\n");
}

package CPAN::CacheMgr;

#-> sub CPAN::CacheMgr::as_string ;
sub as_string {
    eval { require Data::Dumper };
    if ($@) {
	return shift->SUPER::as_string;
    } else {
	return Data::Dumper::Dumper(shift);
    }
}

#-> sub CPAN::CacheMgr::cachesize ;
sub cachesize {
    shift->{DU};
}

sub tidyup {
  my($self) = @_;
  return unless -d $self->{ID};
  while ($self->{DU} > $self->{'MAX'} ) {
    my($toremove) = shift @{$self->{FIFO}};
    $CPAN::Frontend->myprint(sprintf(
				     "Deleting from cache".
				     ": $toremove (%.1f>%.1f MB)\n",
				     $self->{DU}, $self->{'MAX'})
			    );
    return if $CPAN::Signal;
    $self->force_clean_cache($toremove);
    return if $CPAN::Signal;
  }
}

#-> sub CPAN::CacheMgr::dir ;
sub dir {
    shift->{ID};
}

#-> sub CPAN::CacheMgr::entries ;
sub entries {
    my($self,$dir) = @_;
    return unless defined $dir;
    $self->debug("reading dir[$dir]") if $CPAN::DEBUG;
    $dir ||= $self->{ID};
    my $getcwd;
    $getcwd  = $CPAN::Config->{'getcwd'} || 'cwd';
    my($cwd) = CPAN->$getcwd();
    chdir $dir or Carp::croak("Can't chdir to $dir: $!");
    my $dh = DirHandle->new(File::Spec->curdir)
        or Carp::croak("Couldn't opendir $dir: $!");
    my(@entries);
    for ($dh->read) {
	next if $_ eq "." || $_ eq "..";
	if (-f $_) {
	    push @entries, MM->catfile($dir,$_);
	} elsif (-d _) {
	    push @entries, MM->catdir($dir,$_);
	} else {
	    $CPAN::Frontend->mywarn("Warning: weird direntry in $dir: $_\n");
	}
    }
    chdir $cwd or Carp::croak("Can't chdir to $cwd: $!");
    sort { -M $b <=> -M $a} @entries;
}

#-> sub CPAN::CacheMgr::disk_usage ;
sub disk_usage {
    my($self,$dir) = @_;
    return if exists $self->{SIZE}{$dir};
    return if $CPAN::Signal;
    my($Du) = 0;
    find(
	 sub {
	   $File::Find::prune++ if $CPAN::Signal;
	   return if -l $_;
	   if ($^O eq 'MacOS') {
	     require Mac::Files;
	     my $cat  = Mac::Files::FSpGetCatInfo($_);
	     $Du += $cat->ioFlLgLen() + $cat->ioFlRLgLen() if $cat;
	   } else {
	     $Du += (-s _);
	   }
	 },
	 $dir
	);
    return if $CPAN::Signal;
    $self->{SIZE}{$dir} = $Du/1024/1024;
    push @{$self->{FIFO}}, $dir;
    $self->debug("measured $dir is $Du") if $CPAN::DEBUG;
    $self->{DU} += $Du/1024/1024;
    $self->{DU};
}

#-> sub CPAN::CacheMgr::force_clean_cache ;
sub force_clean_cache {
    my($self,$dir) = @_;
    return unless -e $dir;
    $self->debug("have to rmtree $dir, will free $self->{SIZE}{$dir}")
	if $CPAN::DEBUG;
    File::Path::rmtree($dir);
    $self->{DU} -= $self->{SIZE}{$dir};
    delete $self->{SIZE}{$dir};
}

#-> sub CPAN::CacheMgr::new ;
sub new {
    my $class = shift;
    my $time = time;
    my($debug,$t2);
    $debug = "";
    my $self = {
		ID => $CPAN::Config->{'build_dir'},
		MAX => $CPAN::Config->{'build_cache'},
		SCAN => $CPAN::Config->{'scan_cache'} || 'atstart',
		DU => 0
	       };
    File::Path::mkpath($self->{ID});
    my $dh = DirHandle->new($self->{ID});
    bless $self, $class;
    $self->scan_cache;
    $t2 = time;
    $debug .= "timing of CacheMgr->new: ".($t2 - $time);
    $time = $t2;
    CPAN->debug($debug) if $CPAN::DEBUG;
    $self;
}

#-> sub CPAN::CacheMgr::scan_cache ;
sub scan_cache {
    my $self = shift;
    return if $self->{SCAN} eq 'never';
    $CPAN::Frontend->mydie("Unknown scan_cache argument: $self->{SCAN}")
	unless $self->{SCAN} eq 'atstart';
    $CPAN::Frontend->myprint(
			     sprintf("Scanning cache %s for sizes\n",
				     $self->{ID}));
    my $e;
    for $e ($self->entries($self->{ID})) {
	next if $e eq ".." || $e eq ".";
	$self->disk_usage($e);
	return if $CPAN::Signal;
    }
    $self->tidyup;
}

package CPAN::Debug;

#-> sub CPAN::Debug::debug ;
sub debug {
    my($self,$arg) = @_;
    my($caller,$func,$line,@rest) = caller(1); # caller(0) eg
                                               # Complete, caller(1)
                                               # eg readline
    ($caller) = caller(0);
    $caller =~ s/.*:://;
    $arg = "" unless defined $arg;
    my $rest = join "|", map { defined $_ ? $_ : "UNDEF" } @rest;
    if ($CPAN::DEBUG{$caller} & $CPAN::DEBUG){
	if ($arg and ref $arg) {
	    eval { require Data::Dumper };
	    if ($@) {
		$CPAN::Frontend->myprint($arg->as_string);
	    } else {
		$CPAN::Frontend->myprint(Data::Dumper::Dumper($arg));
	    }
	} else {
	    $CPAN::Frontend->myprint("Debug($caller:$func,$line,[$rest]): $arg\n");
	}
    }
}

package CPAN::Config;

#-> sub CPAN::Config::edit ;
# returns true on successful action
sub edit {
    my($class,@args) = @_;
    return unless @args;
    CPAN->debug("class[$class]args[".join(" | ",@args)."]");
    my($o,$str,$func,$args,$key_exists);
    $o = shift @args;
    if($can{$o}) {
	$class->$o(@args);
	return 1;
    } else {
        CPAN->debug("o[$o]");
	if ($o =~ /list$/) {
	    $func = shift @args;
	    $func ||= "";
            CPAN->debug("func[$func]");
            my $changed;
	    # Let's avoid eval, it's easier to comprehend without.
	    if ($func eq "push") {
		push @{$CPAN::Config->{$o}}, @args;
                $changed = 1;
	    } elsif ($func eq "pop") {
		pop @{$CPAN::Config->{$o}};
                $changed = 1;
	    } elsif ($func eq "shift") {
		shift @{$CPAN::Config->{$o}};
                $changed = 1;
	    } elsif ($func eq "unshift") {
		unshift @{$CPAN::Config->{$o}}, @args;
                $changed = 1;
	    } elsif ($func eq "splice") {
		splice @{$CPAN::Config->{$o}}, @args;
                $changed = 1;
	    } elsif (@args) {
		$CPAN::Config->{$o} = [@args];
                $changed = 1;
	    } else {
		$CPAN::Frontend->myprint(
					 join "",
					 "  $o  ",
					 ExtUtils::MakeMaker::neatvalue($CPAN::Config->{$o}),
					 "\n"
		     );
	    }
            if ($o eq "urllist" && $changed) {
                # reset the cached values
                undef $CPAN::FTP::Thesite;
                undef $CPAN::FTP::Themethod;
            }
            return $changed;
	} else {
	    $CPAN::Config->{$o} = $args[0] if defined $args[0];
	    $CPAN::Frontend->myprint("    $o    " .
				     (defined $CPAN::Config->{$o} ?
				      $CPAN::Config->{$o} : "UNDEFINED"));
	}
    }
}

#-> sub CPAN::Config::commit ;
sub commit {
    my($self,$configpm) = @_;
    unless (defined $configpm){
	$configpm ||= $INC{"CPAN/MyConfig.pm"};
	$configpm ||= $INC{"CPAN/Config.pm"};
	$configpm || Carp::confess(q{
CPAN::Config::commit called without an argument.
Please specify a filename where to save the configuration or try
"o conf init" to have an interactive course through configing.
});
    }
    my($mode);
    if (-f $configpm) {
	$mode = (stat $configpm)[2];
	if ($mode && ! -w _) {
	    Carp::confess("$configpm is not writable");
	}
    }

    my $msg;
    $msg = <<EOF unless $configpm =~ /MyConfig/;

# This is CPAN.pm's systemwide configuration file. This file provides
# defaults for users, and the values can be changed in a per-user
# configuration file. The user-config file is being looked for as
# ~/.cpan/CPAN/MyConfig.pm.

EOF
    $msg ||= "\n";
    my($fh) = FileHandle->new;
    rename $configpm, "$configpm~" if -f $configpm;
    open $fh, ">$configpm" or warn "Couldn't open >$configpm: $!";
    $fh->print(qq[$msg\$CPAN::Config = \{\n]);
    foreach (sort keys %$CPAN::Config) {
	$fh->print(
		   "  '$_' => ",
		   ExtUtils::MakeMaker::neatvalue($CPAN::Config->{$_}),
		   ",\n"
		  );
    }

    $fh->print("};\n1;\n__END__\n");
    close $fh;

    #$mode = 0444 | ( $mode & 0111 ? 0111 : 0 );
    #chmod $mode, $configpm;
###why was that so?    $self->defaults;
    $CPAN::Frontend->myprint("commit: wrote $configpm\n");
    1;
}

*default = \&defaults;
#-> sub CPAN::Config::defaults ;
sub defaults {
    my($self) = @_;
    $self->unload;
    $self->load;
    1;
}

sub init {
    my($self) = @_;
    undef $CPAN::Config->{'inhibit_startup_message'}; # lazy trick to
                                                      # have the least
                                                      # important
                                                      # variable
                                                      # undefined
    $self->load;
    1;
}

#-> sub CPAN::Config::load ;
sub load {
    my($self) = shift;
    my(@miss);
    use Carp;
    eval {require CPAN::Config;};       # We eval because of some
                                        # MakeMaker problems
    unless ($dot_cpan++){
      unshift @INC, MM->catdir($ENV{HOME},".cpan");
      eval {require CPAN::MyConfig;};   # where you can override
                                        # system wide settings
      shift @INC;
    }
    return unless @miss = $self->not_loaded;
    # XXX better check for arrayrefs too
    require CPAN::FirstTime;
    my($configpm,$fh,$redo,$theycalled);
    $redo ||= "";
    $theycalled++ if @miss==1 && $miss[0] eq 'inhibit_startup_message';
    if (defined $INC{"CPAN/Config.pm"} && -w $INC{"CPAN/Config.pm"}) {
	$configpm = $INC{"CPAN/Config.pm"};
	$redo++;
    } elsif (defined $INC{"CPAN/MyConfig.pm"} && -w $INC{"CPAN/MyConfig.pm"}) {
	$configpm = $INC{"CPAN/MyConfig.pm"};
	$redo++;
    } else {
	my($path_to_cpan) = File::Basename::dirname($INC{"CPAN.pm"});
	my($configpmdir) = MM->catdir($path_to_cpan,"CPAN");
	my($configpmtest) = MM->catfile($configpmdir,"Config.pm");
	if (-d $configpmdir or File::Path::mkpath($configpmdir)) {
	    if (-w $configpmtest) {
		$configpm = $configpmtest;
	    } elsif (-w $configpmdir) {
		#_#_# following code dumped core on me with 5.003_11, a.k.
		unlink "$configpmtest.bak" if -f "$configpmtest.bak";
		rename $configpmtest, "$configpmtest.bak" if -f $configpmtest;
		my $fh = FileHandle->new;
		if ($fh->open(">$configpmtest")) {
		    $fh->print("1;\n");
		    $configpm = $configpmtest;
		} else {
		    # Should never happen
		    Carp::confess("Cannot open >$configpmtest");
		}
	    }
	}
	unless ($configpm) {
	    $configpmdir = MM->catdir($ENV{HOME},".cpan","CPAN");
	    File::Path::mkpath($configpmdir);
	    $configpmtest = MM->catfile($configpmdir,"MyConfig.pm");
	    if (-w $configpmtest) {
		$configpm = $configpmtest;
	    } elsif (-w $configpmdir) {
		#_#_# following code dumped core on me with 5.003_11, a.k.
		my $fh = FileHandle->new;
		if ($fh->open(">$configpmtest")) {
		    $fh->print("1;\n");
		    $configpm = $configpmtest;
		} else {
		    # Should never happen
		    Carp::confess("Cannot open >$configpmtest");
		}
	    } else {
		Carp::confess(qq{WARNING: CPAN.pm is unable to }.
			      qq{create a configuration file.});
	    }
	}
    }
    local($") = ", ";
    $CPAN::Frontend->myprint(<<END) if $redo && ! $theycalled;
We have to reconfigure CPAN.pm due to following uninitialized parameters:

@miss
END
    $CPAN::Frontend->myprint(qq{
$configpm initialized.
});
    sleep 2;
    CPAN::FirstTime::init($configpm);
}

#-> sub CPAN::Config::not_loaded ;
sub not_loaded {
    my(@miss);
    for (qw(
	    cpan_home keep_source_where build_dir build_cache scan_cache
	    index_expire gzip tar unzip make pager makepl_arg make_arg
	    make_install_arg urllist inhibit_startup_message
	    ftp_proxy http_proxy no_proxy prerequisites_policy
	   )) {
	push @miss, $_ unless defined $CPAN::Config->{$_};
    }
    return @miss;
}

#-> sub CPAN::Config::unload ;
sub unload {
    delete $INC{'CPAN/MyConfig.pm'};
    delete $INC{'CPAN/Config.pm'};
}

#-> sub CPAN::Config::help ;
sub help {
    $CPAN::Frontend->myprint(q[
Known options:
  defaults  reload default config values from disk
  commit    commit session changes to disk
  init      go through a dialog to set all parameters

You may edit key values in the follow fashion (the "o" is a literal
letter o):

  o conf build_cache 15

  o conf build_dir "/foo/bar"

  o conf urllist shift

  o conf urllist unshift ftp://ftp.foo.bar/

]);
    undef; #don't reprint CPAN::Config
}

#-> sub CPAN::Config::cpl ;
sub cpl {
    my($word,$line,$pos) = @_;
    $word ||= "";
    CPAN->debug("word[$word] line[$line] pos[$pos]") if $CPAN::DEBUG;
    my(@words) = split " ", substr($line,0,$pos+1);
    if (
	defined($words[2])
	and
	(
	 $words[2] =~ /list$/ && @words == 3
	 ||
	 $words[2] =~ /list$/ && @words == 4 && length($word)
	)
       ) {
	return grep /^\Q$word\E/, qw(splice shift unshift pop push);
    } elsif (@words >= 4) {
	return ();
    }
    my(@o_conf) = (keys %CPAN::Config::can, keys %$CPAN::Config);
    return grep /^\Q$word\E/, @o_conf;
}

package CPAN::Shell;

#-> sub CPAN::Shell::h ;
sub h {
    my($class,$about) = @_;
    if (defined $about) {
	$CPAN::Frontend->myprint("Detailed help not yet implemented\n");
    } else {
	$CPAN::Frontend->myprint(q{
Display Information
 a                                    authors
 b         string           display   bundles
 d         or               info      distributions
 m         /regex/          about     modules
 i         or                         anything of above
 r         none             reinstall recommendations
 u                          uninstalled distributions

Download, Test, Make, Install...
 get                        download
 make                       make (implies get)
 test      modules,         make test (implies make)
 install   dists, bundles   make install (implies test)
 clean                      make clean
 look                       open subshell in these dists' directories
 readme                     display these dists' README files

Other
 h,?           display this menu       ! perl-code   eval a perl command
 o conf [opt]  set and query options   q             quit the cpan shell
 reload cpan   load CPAN.pm again      reload index  load newer indices
 autobundle    Snapshot                force cmd     unconditionally do cmd});
    }
}

*help = \&h;

#-> sub CPAN::Shell::a ;
sub a {
  my($self,@arg) = @_;
  # authors are always UPPERCASE
  for (@arg) {
    $_ = uc $_;
  }
  $CPAN::Frontend->myprint($self->format_result('Author',@arg));
}
#-> sub CPAN::Shell::b ;
sub b {
    my($self,@which) = @_;
    CPAN->debug("which[@which]") if $CPAN::DEBUG;
    my($incdir,$bdir,$dh);
    foreach $incdir ($CPAN::Config->{'cpan_home'},@INC) {
	$bdir = MM->catdir($incdir,"Bundle");
	if ($dh = DirHandle->new($bdir)) { # may fail
	    my($entry);
	    for $entry ($dh->read) {
		next if -d MM->catdir($bdir,$entry);
		next unless $entry =~ s/\.pm$//;
		$CPAN::META->instance('CPAN::Bundle',"Bundle::$entry");
	    }
	}
    }
    $CPAN::Frontend->myprint($self->format_result('Bundle',@which));
}
#-> sub CPAN::Shell::d ;
sub d { $CPAN::Frontend->myprint(shift->format_result('Distribution',@_));}
#-> sub CPAN::Shell::m ;
sub m { # emacs confused here }; sub mimimimimi { # emacs in sync here
    $CPAN::Frontend->myprint(shift->format_result('Module',@_));
}

#-> sub CPAN::Shell::i ;
sub i {
    my($self) = shift;
    my(@args) = @_;
    my(@type,$type,@m);
    @type = qw/Author Bundle Distribution Module/;
    @args = '/./' unless @args;
    my(@result);
    for $type (@type) {
	push @result, $self->expand($type,@args);
    }
    my $result =  @result == 1 ?
	$result[0]->as_string :
	    join "", map {$_->as_glimpse} @result;
    $result ||= "No objects found of any type for argument @args\n";
    $CPAN::Frontend->myprint($result);
}

#-> sub CPAN::Shell::o ;
sub o {
    my($self,$o_type,@o_what) = @_;
    $o_type ||= "";
    CPAN->debug("o_type[$o_type] o_what[".join(" | ",@o_what)."]\n");
    if ($o_type eq 'conf') {
	shift @o_what if @o_what && $o_what[0] eq 'help';
	if (!@o_what) {
	    my($k,$v);
	    $CPAN::Frontend->myprint("CPAN::Config options");
	    if (exists $INC{'CPAN/Config.pm'}) {
	      $CPAN::Frontend->myprint(" from $INC{'CPAN/Config.pm'}");
	    }
	    if (exists $INC{'CPAN/MyConfig.pm'}) {
	      $CPAN::Frontend->myprint(" and $INC{'CPAN/MyConfig.pm'}");
	    }
	    $CPAN::Frontend->myprint(":\n");
	    for $k (sort keys %CPAN::Config::can) {
		$v = $CPAN::Config::can{$k};
		$CPAN::Frontend->myprint(sprintf "    %-18s %s\n", $k, $v);
	    }
	    $CPAN::Frontend->myprint("\n");
	    for $k (sort keys %$CPAN::Config) {
		$v = $CPAN::Config->{$k};
		if (ref $v) {
                  my(@report) = ref $v eq "ARRAY" ? @$v : %$v;
		    $CPAN::Frontend->myprint(
					     join(
						  "",
						  sprintf(
							  "    %-18s\n",
							  $k
							 ),
						  map {"\t$_\n"} @report
						 )
					    );
		} else {
		    $CPAN::Frontend->myprint(sprintf "    %-18s %s\n", $k, $v);
		}
	    }
	    $CPAN::Frontend->myprint("\n");
	} elsif (!CPAN::Config->edit(@o_what)) {
	    $CPAN::Frontend->myprint(qq[Type 'o conf' to view configuration edit options\n\n]);
	}
    } elsif ($o_type eq 'debug') {
	my(%valid);
	@o_what = () if defined $o_what[0] && $o_what[0] =~ /help/i;
	if (@o_what) {
	    while (@o_what) {
		my($what) = shift @o_what;
		if ( exists $CPAN::DEBUG{$what} ) {
		    $CPAN::DEBUG |= $CPAN::DEBUG{$what};
		} elsif ($what =~ /^\d/) {
		    $CPAN::DEBUG = $what;
		} elsif (lc $what eq 'all') {
		    my($max) = 0;
		    for (values %CPAN::DEBUG) {
			$max += $_;
		    }
		    $CPAN::DEBUG = $max;
		} else {
		    my($known) = 0;
		    for (keys %CPAN::DEBUG) {
			next unless lc($_) eq lc($what);
			$CPAN::DEBUG |= $CPAN::DEBUG{$_};
			$known = 1;
		    }
		    $CPAN::Frontend->myprint("unknown argument [$what]\n")
			unless $known;
		}
	    }
	} else {
	  my $raw = "Valid options for debug are ".
	      join(", ",sort(keys %CPAN::DEBUG), 'all').
		  qq{ or a number. Completion works on the options. }.
		      qq{Case is ignored.};
	  require Text::Wrap;
	  $CPAN::Frontend->myprint(Text::Wrap::fill("","",$raw));
	  $CPAN::Frontend->myprint("\n\n");
	}
	if ($CPAN::DEBUG) {
	    $CPAN::Frontend->myprint("Options set for debugging:\n");
	    my($k,$v);
	    for $k (sort {$CPAN::DEBUG{$a} <=> $CPAN::DEBUG{$b}} keys %CPAN::DEBUG) {
		$v = $CPAN::DEBUG{$k};
		$CPAN::Frontend->myprint(sprintf "    %-14s(%s)\n", $k, $v) if $v & $CPAN::DEBUG;
	    }
	} else {
	    $CPAN::Frontend->myprint("Debugging turned off completely.\n");
	}
    } else {
	$CPAN::Frontend->myprint(qq{
Known options:
  conf    set or get configuration variables
  debug   set or get debugging options
});
    }
}

sub dotdot_onreload {
    my($ref) = shift;
    sub {
	if ( $_[0] =~ /Subroutine (\w+) redefined/ ) {
	    my($subr) = $1;
	    ++$$ref;
	    local($|) = 1;
	    # $CPAN::Frontend->myprint(".($subr)");
	    $CPAN::Frontend->myprint(".");
	    return;
	}
	warn @_;
    };
}

#-> sub CPAN::Shell::reload ;
sub reload {
    my($self,$command,@arg) = @_;
    $command ||= "";
    $self->debug("self[$self]command[$command]arg[@arg]") if $CPAN::DEBUG;
    if ($command =~ /cpan/i) {
	CPAN->debug("reloading the whole CPAN.pm") if $CPAN::DEBUG;
	my $fh = FileHandle->new($INC{'CPAN.pm'});
	local($/);
	$redef = 0;
	local($SIG{__WARN__}) = dotdot_onreload(\$redef);
	eval <$fh>;
	warn $@ if $@;
	$CPAN::Frontend->myprint("\n$redef subroutines redefined\n");
    } elsif ($command =~ /index/) {
      CPAN::Index->force_reload;
    } else {
      $CPAN::Frontend->myprint(qq{cpan     re-evals the CPAN.pm file
index    re-reads the index files\n});
    }
}

#-> sub CPAN::Shell::_binary_extensions ;
sub _binary_extensions {
    my($self) = shift @_;
    my(@result,$module,%seen,%need,$headerdone);
    my $isaperl = q{ perl
                     -?
                     5[._-]
                     (
                      \\d{3}(_[0-4][0-9])?
                      |
                      \\d*[24680]\\.\\d+
                     )
                     \\.tar[._-]gz$
                    };
    for $module ($self->expand('Module','/./')) {
	my $file  = $module->cpan_file;
	next if $file eq "N/A";
	next if $file =~ /^Contact Author/;
	next if $file =~ / $isaperl /x;
	next unless $module->xs_file;
	local($|) = 1;
	$CPAN::Frontend->myprint(".");
	push @result, $module;
    }
#    print join " | ", @result;
    $CPAN::Frontend->myprint("\n");
    return @result;
}

#-> sub CPAN::Shell::recompile ;
sub recompile {
    my($self) = shift @_;
    my($module,@module,$cpan_file,%dist);
    @module = $self->_binary_extensions();
    for $module (@module){  # we force now and compile later, so we
                            # don't do it twice
	$cpan_file = $module->cpan_file;
	my $pack = $CPAN::META->instance('CPAN::Distribution',$cpan_file);
	$pack->force;
	$dist{$cpan_file}++;
    }
    for $cpan_file (sort keys %dist) {
	$CPAN::Frontend->myprint("  CPAN: Recompiling $cpan_file\n\n");
	my $pack = $CPAN::META->instance('CPAN::Distribution',$cpan_file);
	$pack->install;
	$CPAN::Signal = 0; # it's tempting to reset Signal, so we can
                           # stop a package from recompiling,
                           # e.g. IO-1.12 when we have perl5.003_10
    }
}

#-> sub CPAN::Shell::_u_r_common ;
sub _u_r_common {
    my($self) = shift @_;
    my($what) = shift @_;
    CPAN->debug("self[$self] what[$what] args[@_]") if $CPAN::DEBUG;
    Carp::croak "Usage: \$obj->_u_r_common($what)" unless defined $what;
    Carp::croak "Usage: \$obj->_u_r_common(a|r|u)" unless $what =~ /^[aru]$/;
    my(@args) = @_;
    @args = '/./' unless @args;
    my(@result,$module,%seen,%need,$headerdone,
       $version_undefs,$version_zeroes);
    $version_undefs = $version_zeroes = 0;
    my $sprintf = "%-25s %9s %9s  %s\n";
    for $module ($self->expand('Module',@args)) {
	my $file  = $module->cpan_file;
	next unless defined $file; # ??
	my($latest) = $module->cpan_version;
	my($inst_file) = $module->inst_file;
	my($have);
	return if $CPAN::Signal;
	if ($inst_file){
	    if ($what eq "a") {
		$have = $module->inst_version;
	    } elsif ($what eq "r") {
		$have = $module->inst_version;
		local($^W) = 0;
		if ($have eq "undef"){
		    $version_undefs++;
		} elsif ($have == 0){
		    $version_zeroes++;
		}
		next if $have >= $latest;
# to be pedantic we should probably say:
#    && !($have eq "undef" && $latest ne "undef" && $latest gt "");
# to catch the case where CPAN has a version 0 and we have a version undef
	    } elsif ($what eq "u") {
		next;
	    }
	} else {
	    if ($what eq "a") {
		next;
	    } elsif ($what eq "r") {
		next;
	    } elsif ($what eq "u") {
		$have = "-";
	    }
	}
	return if $CPAN::Signal; # this is sometimes lengthy
	$seen{$file} ||= 0;
	if ($what eq "a") {
	    push @result, sprintf "%s %s\n", $module->id, $have;
	} elsif ($what eq "r") {
	    push @result, $module->id;
	    next if $seen{$file}++;
	} elsif ($what eq "u") {
	    push @result, $module->id;
	    next if $seen{$file}++;
	    next if $file =~ /^Contact/;
	}
	unless ($headerdone++){
	    $CPAN::Frontend->myprint("\n");
	    $CPAN::Frontend->myprint(sprintf(
		   $sprintf,
		   "Package namespace",
		   "installed",
		   "latest",
		   "in CPAN file"
		   ));
	}
	$latest = substr($latest,0,8) if length($latest) > 8;
	$have = substr($have,0,8) if length($have) > 8;
	$CPAN::Frontend->myprint(sprintf $sprintf, $module->id, $have, $latest, $file);
	$need{$module->id}++;
    }
    unless (%need) {
	if ($what eq "u") {
	    $CPAN::Frontend->myprint("No modules found for @args\n");
	} elsif ($what eq "r") {
	    $CPAN::Frontend->myprint("All modules are up to date for @args\n");
	}
    }
    if ($what eq "r") {
	if ($version_zeroes) {
	    my $s_has = $version_zeroes > 1 ? "s have" : " has";
	    $CPAN::Frontend->myprint(qq{$version_zeroes installed module$s_has }.
		qq{a version number of 0\n});
	}
	if ($version_undefs) {
	    my $s_has = $version_undefs > 1 ? "s have" : " has";
	    $CPAN::Frontend->myprint(qq{$version_undefs installed module$s_has no }.
		qq{parseable version number\n});
	}
    }
    @result;
}

#-> sub CPAN::Shell::r ;
sub r {
    shift->_u_r_common("r",@_);
}

#-> sub CPAN::Shell::u ;
sub u {
    shift->_u_r_common("u",@_);
}

#-> sub CPAN::Shell::autobundle ;
sub autobundle {
    my($self) = shift;
    CPAN::Config->load unless $CPAN::Config_loaded++;
    my(@bundle) = $self->_u_r_common("a",@_);
    my($todir) = MM->catdir($CPAN::Config->{'cpan_home'},"Bundle");
    File::Path::mkpath($todir);
    unless (-d $todir) {
	$CPAN::Frontend->myprint("Couldn't mkdir $todir for some reason\n");
	return;
    }
    my($y,$m,$d) =  (localtime)[5,4,3];
    $y+=1900;
    $m++;
    my($c) = 0;
    my($me) = sprintf "Snapshot_%04d_%02d_%02d_%02d", $y, $m, $d, $c;
    my($to) = MM->catfile($todir,"$me.pm");
    while (-f $to) {
	$me = sprintf "Snapshot_%04d_%02d_%02d_%02d", $y, $m, $d, ++$c;
	$to = MM->catfile($todir,"$me.pm");
    }
    my($fh) = FileHandle->new(">$to") or Carp::croak "Can't open >$to: $!";
    $fh->print(
	       "package Bundle::$me;\n\n",
	       "\$VERSION = '0.01';\n\n",
	       "1;\n\n",
	       "__END__\n\n",
	       "=head1 NAME\n\n",
	       "Bundle::$me - Snapshot of installation on ",
	       $Config::Config{'myhostname'},
	       " on ",
	       scalar(localtime),
	       "\n\n=head1 SYNOPSIS\n\n",
	       "perl -MCPAN -e 'install Bundle::$me'\n\n",
	       "=head1 CONTENTS\n\n",
	       join("\n", @bundle),
	       "\n\n=head1 CONFIGURATION\n\n",
	       Config->myconfig,
	       "\n\n=head1 AUTHOR\n\n",
	       "This Bundle has been generated automatically ",
	       "by the autobundle routine in CPAN.pm.\n",
	      );
    $fh->close;
    $CPAN::Frontend->myprint("\nWrote bundle file
    $to\n\n");
}

#-> sub CPAN::Shell::expand ;
sub expand {
    shift;
    my($type,@args) = @_;
    my($arg,@m);
    for $arg (@args) {
	my $regex;
	if ($arg =~ m|^/(.*)/$|) {
	    $regex = $1;
	}
	my $class = "CPAN::$type";
	my $obj;
	if (defined $regex) {
	  for $obj (
		    sort
		    {$a->id cmp $b->id}
		    $CPAN::META->all_objects($class)
		   ) {
	    unless ($obj->id){
	      # BUG, we got an empty object somewhere
	      CPAN->debug(sprintf(
				  "Empty id on obj[%s]%%[%s]",
				  $obj,
				  join(":", %$obj)
				 )) if $CPAN::DEBUG;
	      next;
	    }
	    push @m, $obj
		if $obj->id =~ /$regex/i
		    or
			(
			 (
			  $] < 5.00303 ### provide sort of
                                       ### compatibility with 5.003
			  ||
			  $obj->can('name')
			 )
			 &&
			 $obj->name  =~ /$regex/i
			);
	  }
	} else {
	    my($xarg) = $arg;
	    if ( $type eq 'Bundle' ) {
		$xarg =~ s/^(Bundle::)?(.*)/Bundle::$2/;
	    }
	    if ($CPAN::META->exists($class,$xarg)) {
		$obj = $CPAN::META->instance($class,$xarg);
	    } elsif ($CPAN::META->exists($class,$arg)) {
		$obj = $CPAN::META->instance($class,$arg);
	    } else {
		next;
	    }
	    push @m, $obj;
	}
    }
    return wantarray ? @m : $m[0];
}

#-> sub CPAN::Shell::format_result ;
sub format_result {
    my($self) = shift;
    my($type,@args) = @_;
    @args = '/./' unless @args;
    my(@result) = $self->expand($type,@args);
    my $result =  @result == 1 ?
	$result[0]->as_string :
	    join "", map {$_->as_glimpse} @result;
    $result ||= "No objects of type $type found for argument @args\n";
    $result;
}

# The only reason for this method is currently to have a reliable
# debugging utility that reveals which output is going through which
# channel. No, I don't like the colors ;-)
sub print_ornamented {
    my($self,$what,$ornament) = @_;
    my $longest = 0;
    my $ornamenting = 0; # turn the colors on

    if ($ornamenting) {
	unless (defined &color) {
	    if ($CPAN::META->has_inst("Term::ANSIColor")) {
		import Term::ANSIColor "color";
	    } else {
		*color = sub { return "" };
	    }
	}
	my $line;
	for $line (split /\n/, $what) {
	    $longest = length($line) if length($line) > $longest;
	}
	my $sprintf = "%-" . $longest . "s";
	while ($what){
	    $what =~ s/(.*\n?)//m;
	    my $line = $1;
	    last unless $line;
	    my($nl) = chomp $line ? "\n" : "";
	    #	print "line[$line]ornament[$ornament]sprintf[$sprintf]\n";
	    print color($ornament), sprintf($sprintf,$line), color("reset"), $nl;
	}
    } else {
	print $what;
    }
}

sub myprint {
    my($self,$what) = @_;
    $self->print_ornamented($what, 'bold blue on_yellow');
}

sub myexit {
    my($self,$what) = @_;
    $self->myprint($what);
    exit;
}

sub mywarn {
    my($self,$what) = @_;
    $self->print_ornamented($what, 'bold red on_yellow');
}

sub myconfess {
    my($self,$what) = @_;
    $self->print_ornamented($what, 'bold red on_white');
    Carp::confess "died";
}

sub mydie {
    my($self,$what) = @_;
    $self->print_ornamented($what, 'bold red on_white');
    die "\n";
}

sub setup_output {
    return if -t STDOUT;
    my $odef = select STDERR;
    $| = 1;
    select STDOUT;
    $| = 1;
    select $odef;
}

#-> sub CPAN::Shell::rematein ;
# RE-adme||MA-ke||TE-st||IN-stall
sub rematein {
    shift;
    my($meth,@some) = @_;
    my $pragma = "";
    if ($meth eq 'force') {
	$pragma = $meth;
	$meth = shift @some;
    }
    setup_output();
    CPAN->debug("pragma[$pragma]meth[$meth] some[@some]") if $CPAN::DEBUG;
    my($s,@s);
    foreach $s (@some) {
      CPAN::Queue->new($s);
    }
    while ($s = CPAN::Queue->first) {
	my $obj;
	if (ref $s) {
	    $obj = $s;
	} elsif ($s =~ m|/|) { # looks like a file
	    $obj = $CPAN::META->instance('CPAN::Distribution',$s);
	} elsif ($s =~ m|^Bundle::|) {
	    $obj = $CPAN::META->instance('CPAN::Bundle',$s);
	} else {
	    $obj = $CPAN::META->instance('CPAN::Module',$s)
		if $CPAN::META->exists('CPAN::Module',$s);
	}
	if (ref $obj) {
	    CPAN->debug(
			qq{pragma[$pragma]meth[$meth]obj[$obj]as_string\[}.
			$obj->as_string.
			qq{\]}
		       ) if $CPAN::DEBUG;
	    $obj->$pragma()
		if
		    $pragma
			&&
		    ($] < 5.00303 || $obj->can($pragma)); ###
                                                          ### compatibility
                                                          ### with
                                                          ### 5.003
	    if ($]>=5.00303 && $obj->can('called_for')) {
	      $obj->called_for($s);
	    }
	    CPAN::Queue->delete($s) if $obj->$meth(); # if it is more
                                                      # than once in
                                                      # the queue
	} elsif ($CPAN::META->exists('CPAN::Author',$s)) {
	    $obj = $CPAN::META->instance('CPAN::Author',$s);
	    $CPAN::Frontend->myprint(
				     join "",
				     "Don't be silly, you can't $meth ",
				     $obj->fullname,
				     " ;-)\n"
				    );
	} else {
	    $CPAN::Frontend
		->myprint(qq{Warning: Cannot $meth $s, }.
			  qq{don\'t know what it is.
Try the command

    i /$s/

to find objects with similar identifiers.
});
	}
	CPAN::Queue->delete_first($s);
    }
}

#-> sub CPAN::Shell::force ;
sub force   { shift->rematein('force',@_); }
#-> sub CPAN::Shell::get ;
sub get     { shift->rematein('get',@_); }
#-> sub CPAN::Shell::readme ;
sub readme  { shift->rematein('readme',@_); }
#-> sub CPAN::Shell::make ;
sub make    { shift->rematein('make',@_); }
#-> sub CPAN::Shell::test ;
sub test    { shift->rematein('test',@_); }
#-> sub CPAN::Shell::install ;
sub install { shift->rematein('install',@_); }
#-> sub CPAN::Shell::clean ;
sub clean   { shift->rematein('clean',@_); }
#-> sub CPAN::Shell::look ;
sub look   { shift->rematein('look',@_); }
#-> sub CPAN::Shell::cvs_import ;
sub cvs_import   { shift->rematein('cvs_import',@_); }

package CPAN::FTP;

#-> sub CPAN::FTP::ftp_get ;
sub ftp_get {
  my($class,$host,$dir,$file,$target) = @_;
  $class->debug(
		qq[Going to fetch file [$file] from dir [$dir]
	on host [$host] as local [$target]\n]
		      ) if $CPAN::DEBUG;
  my $ftp = Net::FTP->new($host);
  return 0 unless defined $ftp;
  $ftp->debug(1) if $CPAN::DEBUG{'FTP'} & $CPAN::DEBUG;
  $class->debug(qq[Going to ->login("anonymous","$Config::Config{'cf_email'}")\n]);
  unless ( $ftp->login("anonymous",$Config::Config{'cf_email'}) ){
    warn "Couldn't login on $host";
    return;
  }
  unless ( $ftp->cwd($dir) ){
    warn "Couldn't cwd $dir";
    return;
  }
  $ftp->binary;
  $class->debug(qq[Going to ->get("$file","$target")\n]) if $CPAN::DEBUG;
  unless ( $ftp->get($file,$target) ){
    warn "Couldn't fetch $file from $host\n";
    return;
  }
  $ftp->quit; # it's ok if this fails
  return 1;
}

# If more accuracy is wanted/needed, Chris Leach sent me this patch...

 # leach,> *** /install/perl/live/lib/CPAN.pm-	Wed Sep 24 13:08:48 1997
 # leach,> --- /tmp/cp	Wed Sep 24 13:26:40 1997
 # leach,> ***************
 # leach,> *** 1562,1567 ****
 # leach,> --- 1562,1580 ----
 # leach,>       return 1 if substr($url,0,4) eq "file";
 # leach,>       return 1 unless $url =~ m|://([^/]+)|;
 # leach,>       my $host = $1;
 # leach,> +     my $proxy = $CPAN::Config->{'http_proxy'} || $ENV{'http_proxy'};
 # leach,> +     if ($proxy) {
 # leach,> +         $proxy =~ m|://([^/:]+)|;
 # leach,> +         $proxy = $1;
 # leach,> +         my $noproxy = $CPAN::Config->{'no_proxy'} || $ENV{'no_proxy'};
 # leach,> +         if ($noproxy) {
 # leach,> +             if ($host !~ /$noproxy$/) {
 # leach,> +                 $host = $proxy;
 # leach,> +             }
 # leach,> +         } else {
 # leach,> +             $host = $proxy;
 # leach,> +         }
 # leach,> +     }
 # leach,>       require Net::Ping;
 # leach,>       return 1 unless $Net::Ping::VERSION >= 2;
 # leach,>       my $p;


# this is quite optimistic and returns one on several occasions where
# inappropriate. But this does no harm. It would do harm if we were
# too pessimistic (as I was before the http_proxy
sub is_reachable {
    my($self,$url) = @_;
    return 1; # we can't simply roll our own, firewalls may break ping
    return 0 unless $url;
    return 1 if substr($url,0,4) eq "file";
    return 1 unless $url =~ m|^(\w+)://([^/]+)|;
    my $proxytype = $1 . "_proxy"; # ftp_proxy or http_proxy
    my $host = $2;
    return 1 if $CPAN::Config->{$proxytype} || $ENV{$proxytype};
    require Net::Ping;
    return 1 unless $Net::Ping::VERSION >= 2;
    my $p;
    # 1.3101 had it different: only if the first eval raised an
    # exception we tried it with TCP. Now we are happy if icmp wins
    # the order and return, we don't even check for $@. Thanks to
    # thayer@uis.edu for the suggestion.
    eval {$p = Net::Ping->new("icmp");};
    return 1 if $p && ref($p) && $p->ping($host, 10);
    eval {$p = Net::Ping->new("tcp");};
    $CPAN::Frontend->mydie($@) if $@;
    return $p->ping($host, 10);
}

#-> sub CPAN::FTP::localize ;
# sorry for the ugly code here, I'll clean it up as soon as Net::FTP
# is in the core
sub localize {
    my($self,$file,$aslocal,$force) = @_;
    $force ||= 0;
    Carp::croak "Usage: ->localize(cpan_file,as_local_file[,$force])"
	unless defined $aslocal;
    $self->debug("file[$file] aslocal[$aslocal] force[$force]")
	if $CPAN::DEBUG;

    if ($^O eq 'MacOS') {
        my($name, $path) = File::Basename::fileparse($aslocal, '');
        if (length($name) > 31) {
            $name =~ s/(\.(readme(\.(gz|Z))?|(tar\.)?(gz|Z)|tgz|zip|pm\.(gz|Z)))$//;
            my $suf = $1;
            my $size = 31 - length($suf);
            while (length($name) > $size) {
                chop $name;
            }
            $name .= $suf;
            $aslocal = File::Spec->catfile($path, $name);
        }
    }

    return $aslocal if -f $aslocal && -r _ && !($force & 1);
    my($restore) = 0;
    if (-f $aslocal){
	rename $aslocal, "$aslocal.bak";
	$restore++;
    }

    my($aslocal_dir) = File::Basename::dirname($aslocal);
    File::Path::mkpath($aslocal_dir);
    $CPAN::Frontend->mywarn(qq{Warning: You are not allowed to write into }.
	qq{directory "$aslocal_dir".
    I\'ll continue, but if you encounter problems, they may be due
    to insufficient permissions.\n}) unless -w $aslocal_dir;

    # Inheritance is not easier to manage than a few if/else branches
    if ($CPAN::META->has_usable('LWP::UserAgent')) {
 	unless ($Ua) {
	    $Ua = LWP::UserAgent->new;
	    my($var);
	    $Ua->proxy('ftp',  $var)
		if $var = $CPAN::Config->{'ftp_proxy'} || $ENV{'ftp_proxy'};
	    $Ua->proxy('http', $var)
		if $var = $CPAN::Config->{'http_proxy'} || $ENV{'http_proxy'};
	    $Ua->no_proxy($var)
		if $var = $CPAN::Config->{'no_proxy'} || $ENV{'no_proxy'};
	}
    }

    # Try the list of urls for each single object. We keep a record
    # where we did get a file from
    my(@reordered,$last);
    $CPAN::Config->{urllist} ||= [];
    $last = $#{$CPAN::Config->{urllist}};
    if ($force & 2) { # local cpans probably out of date, don't reorder
	@reordered = (0..$last);
    } else {
	@reordered =
	    sort {
		(substr($CPAN::Config->{urllist}[$b],0,4) eq "file")
		    <=>
		(substr($CPAN::Config->{urllist}[$a],0,4) eq "file")
		    or
		defined($Thesite)
		    and
		($b == $Thesite)
		    <=>
		($a == $Thesite)
	    } 0..$last;
    }
    my($level,@levels);
    if ($Themethod) {
	@levels = ($Themethod, grep {$_ ne $Themethod} qw/easy hard hardest/);
    } else {
	@levels = qw/easy hard hardest/;
    }
    @levels = qw/easy/ if $^O eq 'MacOS';
    for $level (@levels) {
	my $method = "host$level";
	my @host_seq = $level eq "easy" ?
	    @reordered : 0..$last;  # reordered has CDROM up front
	@host_seq = (0) unless @host_seq;
	my $ret = $self->$method(\@host_seq,$file,$aslocal);
	if ($ret) {
	  $Themethod = $level;
	  my $now = time;
	  # utime $now, $now, $aslocal; # too bad, if we do that, we
                                      # might alter a local mirror
	  $self->debug("level[$level]") if $CPAN::DEBUG;
	  return $ret;
	} else {
	  unlink $aslocal;
	}
    }
    my(@mess);
    push @mess,
    qq{Please check, if the URLs I found in your configuration file \(}.
	join(", ", @{$CPAN::Config->{urllist}}).
	    qq{\) are valid. The urllist can be edited.},
	    qq{E.g. with ``o conf urllist push ftp://myurl/''};
    $CPAN::Frontend->myprint(Text::Wrap::wrap("","",@mess). "\n\n");
    sleep 2;
    $CPAN::Frontend->myprint("Cannot fetch $file\n\n");
    if ($restore) {
	rename "$aslocal.bak", $aslocal;
	$CPAN::Frontend->myprint("Trying to get away with old file:\n" .
				 $self->ls($aslocal));
	return $aslocal;
    }
    return;
}

sub hosteasy {
    my($self,$host_seq,$file,$aslocal) = @_;
    my($i);
  HOSTEASY: for $i (@$host_seq) {
      my $url = $CPAN::Config->{urllist}[$i] || $CPAN::Defaultsite;
	unless ($self->is_reachable($url)) {
	    $CPAN::Frontend->myprint("Skipping $url (seems to be not reachable)\n");
	    sleep 2;
	    next;
	}
	$url .= "/" unless substr($url,-1) eq "/";
	$url .= $file;
	$self->debug("localizing perlish[$url]") if $CPAN::DEBUG;
	if ($url =~ /^file:/) {
	    my $l;
	    if ($CPAN::META->has_inst('URI::URL')) {
		my $u =  URI::URL->new($url);
		$l = $u->path;
	    } else { # works only on Unix, is poorly constructed, but
		# hopefully better than nothing.
		# RFC 1738 says fileurl BNF is
		# fileurl = "file://" [ host | "localhost" ] "/" fpath
		# Thanks to "Mark D. Baushke" <mdb@cisco.com> for
		# the code
		($l = $url) =~ s|^file://[^/]*/|/|; # discard the host part
		$l =~ s|^file:||;                   # assume they
                                                    # meant
                                                    # file://localhost
		$l =~ s|^/||s unless -f $l;         # e.g. /P:
	    }
	    if ( -f $l && -r _) {
		$Thesite = $i;
		return $l;
	    }
	    # Maybe mirror has compressed it?
	    if (-f "$l.gz") {
		$self->debug("found compressed $l.gz") if $CPAN::DEBUG;
		CPAN::Tarzip->gunzip("$l.gz", $aslocal);
		if ( -f $aslocal) {
		    $Thesite = $i;
		    return $aslocal;
		}
	    }
	}
      if ($CPAN::META->has_usable('LWP')) {
	  $CPAN::Frontend->myprint("Fetching with LWP:
  $url
");
	  unless ($Ua) {
	    require LWP::UserAgent;
	    $Ua = LWP::UserAgent->new;
	  }
	  my $res = $Ua->mirror($url, $aslocal);
	  if ($res->is_success) {
	    $Thesite = $i;
	    my $now = time;
	    utime $now, $now, $aslocal; # download time is more
                                        # important than upload time
	    return $aslocal;
	  } elsif ($url !~ /\.gz$/) {
	    my $gzurl = "$url.gz";
	    $CPAN::Frontend->myprint("Fetching with LWP:
  $gzurl
");
	    $res = $Ua->mirror($gzurl, "$aslocal.gz");
	    if ($res->is_success &&
		CPAN::Tarzip->gunzip("$aslocal.gz",$aslocal)
	       ) {
	      $Thesite = $i;
	      return $aslocal;
	    } else {
	      # next HOSTEASY ;
	    }
	  } else {
	    # Alan Burlison informed me that in firewall envs Net::FTP
	    # can still succeed where LWP fails. So we do not skip
	    # Net::FTP anymore when LWP is available.
	    # next HOSTEASY ;
	  }
	} else {
	  $self->debug("LWP not installed") if $CPAN::DEBUG;
	}
	if ($url =~ m|^ftp://(.*?)/(.*)/(.*)|) {
	    # that's the nice and easy way thanks to Graham
	    my($host,$dir,$getfile) = ($1,$2,$3);
	    if ($CPAN::META->has_usable('Net::FTP')) {
		$dir =~ s|/+|/|g;
		$CPAN::Frontend->myprint("Fetching with Net::FTP:
  $url
");
		$self->debug("getfile[$getfile]dir[$dir]host[$host]" .
			     "aslocal[$aslocal]") if $CPAN::DEBUG;
		if (CPAN::FTP->ftp_get($host,$dir,$getfile,$aslocal)) {
		    $Thesite = $i;
		    return $aslocal;
		}
		if ($aslocal !~ /\.gz$/) {
		    my $gz = "$aslocal.gz";
		    $CPAN::Frontend->myprint("Fetching with Net::FTP
  $url.gz
");
		   if (CPAN::FTP->ftp_get($host,
					   $dir,
					   "$getfile.gz",
					   $gz) &&
			CPAN::Tarzip->gunzip($gz,$aslocal)
		       ){
			$Thesite = $i;
			return $aslocal;
		    }
		}
		# next HOSTEASY;
	    }
	}
    }
}

sub hosthard {
  my($self,$host_seq,$file,$aslocal) = @_;

  # Came back if Net::FTP couldn't establish connection (or
  # failed otherwise) Maybe they are behind a firewall, but they
  # gave us a socksified (or other) ftp program...

  my($i);
  my($devnull) = $CPAN::Config->{devnull} || "";
  # < /dev/null ";
  my($aslocal_dir) = File::Basename::dirname($aslocal);
  File::Path::mkpath($aslocal_dir);
  HOSTHARD: for $i (@$host_seq) {
	my $url = $CPAN::Config->{urllist}[$i] || $CPAN::Defaultsite;
	unless ($self->is_reachable($url)) {
	  $CPAN::Frontend->myprint("Skipping $url (not reachable)\n");
	  next;
	}
	$url .= "/" unless substr($url,-1) eq "/";
	$url .= $file;
	my($proto,$host,$dir,$getfile);

	# Courtesy Mark Conty mark_conty@cargill.com change from
	# if ($url =~ m|^ftp://(.*?)/(.*)/(.*)|) {
	# to
	if ($url =~ m|^([^:]+)://(.*?)/(.*)/(.*)|) {
	  # proto not yet used
	  ($proto,$host,$dir,$getfile) = ($1,$2,$3,$4);
	} else {
	  next HOSTHARD; # who said, we could ftp anything except ftp?
	}

	$self->debug("localizing funkyftpwise[$url]") if $CPAN::DEBUG;
	my($f,$funkyftp);
	for $f ('lynx','ncftpget','ncftp') {
	  next unless exists $CPAN::Config->{$f};
	  $funkyftp = $CPAN::Config->{$f};
	  next unless defined $funkyftp;
	  next if $funkyftp =~ /^\s*$/;
	  my($asl_ungz, $asl_gz);
	  ($asl_ungz = $aslocal) =~ s/\.gz//;
          $asl_gz = "$asl_ungz.gz";
	  my($src_switch) = "";
	  if ($f eq "lynx"){
	    $src_switch = " -source";
	  } elsif ($f eq "ncftp"){
	    $src_switch = " -c";
	  }
	  my($chdir) = "";
	  my($stdout_redir) = " > $asl_ungz";
	  if ($f eq "ncftpget"){
	    $chdir = "cd $aslocal_dir && ";
	    $stdout_redir = "";
	  }
	  $CPAN::Frontend->myprint(
				   qq[
Trying with "$funkyftp$src_switch" to get
    $url
]);
	  my($system) =
	      "$chdir$funkyftp$src_switch '$url' $devnull$stdout_redir";
	  $self->debug("system[$system]") if $CPAN::DEBUG;
	  my($wstatus);
	  if (($wstatus = system($system)) == 0
	      &&
	      ($f eq "lynx" ?
	       -s $asl_ungz   # lynx returns 0 on my
                                          # system even if it fails
	       : 1
	      )
	     ) {
	    if (-s $aslocal) {
	      # Looks good
	    } elsif ($asl_ungz ne $aslocal) {
	      # test gzip integrity
	      if (
		  CPAN::Tarzip->gtest($asl_ungz)
		 ) {
		rename $asl_ungz, $aslocal;
	      } else {
		CPAN::Tarzip->gzip($asl_ungz,$asl_gz);
	      }
	    }
	    $Thesite = $i;
	    return $aslocal;
	  } elsif ($url !~ /\.gz$/) {
	    unlink $asl_ungz if
		-f $asl_ungz && -s _ == 0;
	    my $gz = "$aslocal.gz";
	    my $gzurl = "$url.gz";
	    $CPAN::Frontend->myprint(
				     qq[
Trying with "$funkyftp$src_switch" to get
  $url.gz
]);
	    my($system) = "$funkyftp$src_switch '$url.gz' $devnull > $asl_gz";
	    $self->debug("system[$system]") if $CPAN::DEBUG;
	    my($wstatus);
	    if (($wstatus = system($system)) == 0
		&&
		-s $asl_gz
	       ) {
	      # test gzip integrity
	      if (CPAN::Tarzip->gtest($asl_gz)) {
		CPAN::Tarzip->gunzip($asl_gz,$aslocal);
	      } else {
		rename $asl_ungz, $aslocal;
	      }
	      $Thesite = $i;
	      return $aslocal;
	    } else {
	      unlink $asl_gz if -f $asl_gz;
	    }
	  } else {
	    my $estatus = $wstatus >> 8;
	    my $size = -f $aslocal ?
		", left\n$aslocal with size ".-s _ :
		    "\nWarning: expected file [$aslocal] doesn't exist";
	    $CPAN::Frontend->myprint(qq{
System call "$system"
returned status $estatus (wstat $wstatus)$size
});
	  }
	}
    }
}

sub hosthardest {
    my($self,$host_seq,$file,$aslocal) = @_;

    my($i);
    my($aslocal_dir) = File::Basename::dirname($aslocal);
    File::Path::mkpath($aslocal_dir);
  HOSTHARDEST: for $i (@$host_seq) {
	unless (length $CPAN::Config->{'ftp'}) {
	    $CPAN::Frontend->myprint("No external ftp command available\n\n");
	    last HOSTHARDEST;
	}
	my $url = $CPAN::Config->{urllist}[$i] || $CPAN::Defaultsite;
	unless ($self->is_reachable($url)) {
	    $CPAN::Frontend->myprint("Skipping $url (not reachable)\n");
	    next;
	}
	$url .= "/" unless substr($url,-1) eq "/";
	$url .= $file;
	$self->debug("localizing ftpwise[$url]") if $CPAN::DEBUG;
	unless ($url =~ m|^ftp://(.*?)/(.*)/(.*)|) {
	    next;
	}
	my($host,$dir,$getfile) = ($1,$2,$3);
	my $timestamp = 0;
	my($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,
	   $ctime,$blksize,$blocks) = stat($aslocal);
	$timestamp = $mtime ||= 0;
	my($netrc) = CPAN::FTP::netrc->new;
	my($netrcfile) = $netrc->netrc;
	my($verbose) = $CPAN::DEBUG{'FTP'} & $CPAN::DEBUG ? " -v" : "";
	my $targetfile = File::Basename::basename($aslocal);
	my(@dialog);
	push(
	     @dialog,
	     "lcd $aslocal_dir",
	     "cd /",
	     map("cd $_", split "/", $dir), # RFC 1738
	     "bin",
	     "get $getfile $targetfile",
	     "quit"
	    );
	if (! $netrcfile) {
	    CPAN->debug("No ~/.netrc file found") if $CPAN::DEBUG;
	} elsif ($netrc->hasdefault || $netrc->contains($host)) {
	    CPAN->debug(sprintf("hasdef[%d]cont($host)[%d]",
				$netrc->hasdefault,
				$netrc->contains($host))) if $CPAN::DEBUG;
	    if ($netrc->protected) {
		$CPAN::Frontend->myprint(qq{
  Trying with external ftp to get
    $url
  As this requires some features that are not thoroughly tested, we\'re
  not sure, that we get it right....

}
		     );
		$self->talk_ftp("$CPAN::Config->{'ftp'}$verbose $host",
				@dialog);
		($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
		 $atime,$mtime,$ctime,$blksize,$blocks) = stat($aslocal);
		$mtime ||= 0;
		if ($mtime > $timestamp) {
		    $CPAN::Frontend->myprint("GOT $aslocal\n");
		    $Thesite = $i;
		    return $aslocal;
		} else {
		    $CPAN::Frontend->myprint("Hmm... Still failed!\n");
		}
	    } else {
		$CPAN::Frontend->mywarn(qq{Your $netrcfile is not }.
					qq{correctly protected.\n});
	    }
	} else {
	    $CPAN::Frontend->mywarn("Your ~/.netrc neither contains $host
  nor does it have a default entry\n");
	}

	# OK, they don't have a valid ~/.netrc. Use 'ftp -n'
	# then and login manually to host, using e-mail as
	# password.
	$CPAN::Frontend->myprint(qq{Issuing "$CPAN::Config->{'ftp'}$verbose -n"\n});
	unshift(
		@dialog,
		"open $host",
		"user anonymous $Config::Config{'cf_email'}"
	       );
	$self->talk_ftp("$CPAN::Config->{'ftp'}$verbose -n", @dialog);
	($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
	 $atime,$mtime,$ctime,$blksize,$blocks) = stat($aslocal);
	$mtime ||= 0;
	if ($mtime > $timestamp) {
	    $CPAN::Frontend->myprint("GOT $aslocal\n");
	    $Thesite = $i;
	    return $aslocal;
	} else {
	    $CPAN::Frontend->myprint("Bad luck... Still failed!\n");
	}
	$CPAN::Frontend->myprint("Can't access URL $url.\n\n");
	sleep 2;
    }
}

sub talk_ftp {
    my($self,$command,@dialog) = @_;
    my $fh = FileHandle->new;
    $fh->open("|$command") or die "Couldn't open ftp: $!";
    foreach (@dialog) { $fh->print("$_\n") }
    $fh->close;		# Wait for process to complete
    my $wstatus = $?;
    my $estatus = $wstatus >> 8;
    $CPAN::Frontend->myprint(qq{
Subprocess "|$command"
  returned status $estatus (wstat $wstatus)
}) if $wstatus;
}

# find2perl needs modularization, too, all the following is stolen
# from there
# CPAN::FTP::ls
sub ls {
    my($self,$name) = @_;
    my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$sizemm,
     $atime,$mtime,$ctime,$blksize,$blocks) = lstat($name);

    my($perms,%user,%group);
    my $pname = $name;

    if ($blocks) {
	$blocks = int(($blocks + 1) / 2);
    }
    else {
	$blocks = int(($sizemm + 1023) / 1024);
    }

    if    (-f _) { $perms = '-'; }
    elsif (-d _) { $perms = 'd'; }
    elsif (-c _) { $perms = 'c'; $sizemm = &sizemm; }
    elsif (-b _) { $perms = 'b'; $sizemm = &sizemm; }
    elsif (-p _) { $perms = 'p'; }
    elsif (-S _) { $perms = 's'; }
    else         { $perms = 'l'; $pname .= ' -> ' . readlink($_); }

    my(@rwx) = ('---','--x','-w-','-wx','r--','r-x','rw-','rwx');
    my(@moname) = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
    my $tmpmode = $mode;
    my $tmp = $rwx[$tmpmode & 7];
    $tmpmode >>= 3;
    $tmp = $rwx[$tmpmode & 7] . $tmp;
    $tmpmode >>= 3;
    $tmp = $rwx[$tmpmode & 7] . $tmp;
    substr($tmp,2,1) =~ tr/-x/Ss/ if -u _;
    substr($tmp,5,1) =~ tr/-x/Ss/ if -g _;
    substr($tmp,8,1) =~ tr/-x/Tt/ if -k _;
    $perms .= $tmp;

    my $user = $user{$uid} || $uid;   # too lazy to implement lookup
    my $group = $group{$gid} || $gid;

    my($sec,$min,$hour,$mday,$mon,$year) = localtime($mtime);
    my($timeyear);
    my($moname) = $moname[$mon];
    if (-M _ > 365.25 / 2) {
	$timeyear = $year + 1900;
    }
    else {
	$timeyear = sprintf("%02d:%02d", $hour, $min);
    }

    sprintf "%5lu %4ld %-10s %2d %-8s %-8s %8s %s %2d %5s %s\n",
	    $ino,
		 $blocks,
		      $perms,
			    $nlink,
				$user,
				     $group,
					  $sizemm,
					      $moname,
						 $mday,
						     $timeyear,
							 $pname;
}

package CPAN::FTP::netrc;

sub new {
    my($class) = @_;
    my $file = MM->catfile($ENV{HOME},".netrc");

    my($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
       $atime,$mtime,$ctime,$blksize,$blocks)
	= stat($file);
    $mode ||= 0;
    my $protected = 0;

    my($fh,@machines,$hasdefault);
    $hasdefault = 0;
    $fh = FileHandle->new or die "Could not create a filehandle";

    if($fh->open($file)){
	$protected = ($mode & 077) == 0;
	local($/) = "";
      NETRC: while (<$fh>) {
	    my(@tokens) = split " ", $_;
	  TOKEN: while (@tokens) {
		my($t) = shift @tokens;
		if ($t eq "default"){
		    $hasdefault++;
		    last NETRC;
		}
		last TOKEN if $t eq "macdef";
		if ($t eq "machine") {
		    push @machines, shift @tokens;
		}
	    }
	}
    } else {
	$file = $hasdefault = $protected = "";
    }

    bless {
	   'mach' => [@machines],
	   'netrc' => $file,
	   'hasdefault' => $hasdefault,
	   'protected' => $protected,
	  }, $class;
}

sub hasdefault { shift->{'hasdefault'} }
sub netrc      { shift->{'netrc'}      }
sub protected  { shift->{'protected'}  }
sub contains {
    my($self,$mach) = @_;
    for ( @{$self->{'mach'}} ) {
	return 1 if $_ eq $mach;
    }
    return 0;
}

package CPAN::Complete;

sub gnu_cpl {
    my($text, $line, $start, $end) = @_;
    my(@perlret) = cpl($text, $line, $start);
    # find longest common match. Can anybody show me how to peruse
    # T::R::Gnu to have this done automatically? Seems expensive.
    return () unless @perlret;
    my($newtext) = $text;
    for (my $i = length($text)+1;;$i++) {
	last unless length($perlret[0]) && length($perlret[0]) >= $i;
	my $try = substr($perlret[0],0,$i);
	my @tries = grep {substr($_,0,$i) eq $try} @perlret;
	# warn "try[$try]tries[@tries]";
	if (@tries == @perlret) {
	    $newtext = $try;
	} else {
	    last;
	}
    }
    ($newtext,@perlret);
}

#-> sub CPAN::Complete::cpl ;
sub cpl {
    my($word,$line,$pos) = @_;
    $word ||= "";
    $line ||= "";
    $pos ||= 0;
    CPAN->debug("word [$word] line[$line] pos[$pos]") if $CPAN::DEBUG;
    $line =~ s/^\s*//;
    if ($line =~ s/^(force\s*)//) {
	$pos -= length($1);
    }
    my @return;
    if ($pos == 0) {
	@return = grep(
		       /^$word/,
		       sort qw(
			       ! a b d h i m o q r u autobundle clean
			       make test install force reload look cvs_import
			      )
		      );
    } elsif ( $line !~ /^[\!abcdhimorutl]/ ) {
	@return = ();
    } elsif ($line =~ /^a\s/) {
	@return = cplx('CPAN::Author',$word);
    } elsif ($line =~ /^b\s/) {
	@return = cplx('CPAN::Bundle',$word);
    } elsif ($line =~ /^d\s/) {
	@return = cplx('CPAN::Distribution',$word);
    } elsif ($line =~ /^([mru]|make|clean|test|install|readme|look|cvs_import)\s/ ) {
	@return = (cplx('CPAN::Module',$word),cplx('CPAN::Bundle',$word));
    } elsif ($line =~ /^i\s/) {
	@return = cpl_any($word);
    } elsif ($line =~ /^reload\s/) {
	@return = cpl_reload($word,$line,$pos);
    } elsif ($line =~ /^o\s/) {
	@return = cpl_option($word,$line,$pos);
    } else {
	@return = ();
    }
    return @return;
}

#-> sub CPAN::Complete::cplx ;
sub cplx {
    my($class, $word) = @_;
    # I believed for many years that this was sorted, today I
    # realized, it wasn't sorted anymore. Now (rev 1.301 / v 1.55) I
    # make it sorted again. Maybe sort was dropped when GNU-readline
    # support came in? The RCS file is difficult to read on that:-(
    sort grep /^\Q$word\E/, map { $_->id } $CPAN::META->all_objects($class);
}

#-> sub CPAN::Complete::cpl_any ;
sub cpl_any {
    my($word) = shift;
    return (
	    cplx('CPAN::Author',$word),
	    cplx('CPAN::Bundle',$word),
	    cplx('CPAN::Distribution',$word),
	    cplx('CPAN::Module',$word),
	   );
}

#-> sub CPAN::Complete::cpl_reload ;
sub cpl_reload {
    my($word,$line,$pos) = @_;
    $word ||= "";
    my(@words) = split " ", $line;
    CPAN->debug("word[$word] line[$line] pos[$pos]") if $CPAN::DEBUG;
    my(@ok) = qw(cpan index);
    return @ok if @words == 1;
    return grep /^\Q$word\E/, @ok if @words == 2 && $word;
}

#-> sub CPAN::Complete::cpl_option ;
sub cpl_option {
    my($word,$line,$pos) = @_;
    $word ||= "";
    my(@words) = split " ", $line;
    CPAN->debug("word[$word] line[$line] pos[$pos]") if $CPAN::DEBUG;
    my(@ok) = qw(conf debug);
    return @ok if @words == 1;
    return grep /^\Q$word\E/, @ok if @words == 2 && length($word);
    if (0) {
    } elsif ($words[1] eq 'index') {
	return ();
    } elsif ($words[1] eq 'conf') {
	return CPAN::Config::cpl(@_);
    } elsif ($words[1] eq 'debug') {
	return sort grep /^\Q$word\E/, sort keys %CPAN::DEBUG, 'all';
    }
}

package CPAN::Index;

#-> sub CPAN::Index::force_reload ;
sub force_reload {
    my($class) = @_;
    $CPAN::Index::last_time = 0;
    $class->reload(1);
}

#-> sub CPAN::Index::reload ;
sub reload {
    my($cl,$force) = @_;
    my $time = time;

    # XXX check if a newer one is available. (We currently read it
    # from time to time)
    for ($CPAN::Config->{index_expire}) {
	$_ = 0.001 unless $_ && $_ > 0.001;
    }
    return if $last_time + $CPAN::Config->{index_expire}*86400 > $time
	and ! $force;
    ## IFF we are developing, it helps to wipe out the memory between
    ## reloads, otherwise it is not what a user expects.

    ## undef $CPAN::META; # Neue Gruendlichkeit since v1.52(r1.274)
    ## $CPAN::META = CPAN->new;
    my($debug,$t2);
    $last_time = $time;

    my $needshort = $^O eq "dos";

    $cl->rd_authindex($cl
		      ->reload_x(
				 "authors/01mailrc.txt.gz",
				 $needshort ?
				 File::Spec->catfile('authors', '01mailrc.gz') :
				 File::Spec->catfile('authors', '01mailrc.txt.gz'),
				 $force));
    $t2 = time;
    $debug = "timing reading 01[".($t2 - $time)."]";
    $time = $t2;
    return if $CPAN::Signal; # this is sometimes lengthy
    $cl->rd_modpacks($cl
		     ->reload_x(
				"modules/02packages.details.txt.gz",
				$needshort ?
				File::Spec->catfile('modules', '02packag.gz') :
				File::Spec->catfile('modules', '02packages.details.txt.gz'),
				$force));
    $t2 = time;
    $debug .= "02[".($t2 - $time)."]";
    $time = $t2;
    return if $CPAN::Signal; # this is sometimes lengthy
    $cl->rd_modlist($cl
		    ->reload_x(
			       "modules/03modlist.data.gz",
			       $needshort ?
			       File::Spec->catfile('modules', '03mlist.gz') :
			       File::Spec->catfile('modules', '03modlist.data.gz'),
			       $force));
    $t2 = time;
    $debug .= "03[".($t2 - $time)."]";
    $time = $t2;
    CPAN->debug($debug) if $CPAN::DEBUG;
}

#-> sub CPAN::Index::reload_x ;
sub reload_x {
    my($cl,$wanted,$localname,$force) = @_;
    $force |= 2; # means we're dealing with an index here
    CPAN::Config->load; # we should guarantee loading wherever we rely
                        # on Config XXX
    $localname ||= $wanted;
    my $abs_wanted = MM->catfile($CPAN::Config->{'keep_source_where'},
				   $localname);
    if (
	-f $abs_wanted &&
	-M $abs_wanted < $CPAN::Config->{'index_expire'} &&
	!($force & 1)
       ) {
	my $s = $CPAN::Config->{'index_expire'} == 1 ? "" : "s";
	$cl->debug(qq{$abs_wanted younger than $CPAN::Config->{'index_expire'} }.
		   qq{day$s. I\'ll use that.});
	return $abs_wanted;
    } else {
	$force |= 1; # means we're quite serious about it.
    }
    return CPAN::FTP->localize($wanted,$abs_wanted,$force);
}

#-> sub CPAN::Index::rd_authindex ;
sub rd_authindex {
    my($cl, $index_target) = @_;
    my @lines;
    return unless defined $index_target;
    $CPAN::Frontend->myprint("Going to read $index_target\n");
#    my $fh = CPAN::Tarzip->TIEHANDLE($index_target);
#    while ($_ = $fh->READLINE) {
    # no strict 'refs';
    local(*FH);
    tie *FH, CPAN::Tarzip, $index_target;
    local($/) = "\n";
    push @lines, split /\012/ while <FH>;
    foreach (@lines) {
	my($userid,$fullname,$email) =
	    m/alias\s+(\S+)\s+\"([^\"\<]+)\s+\<([^\>]+)\>\"/;
	next unless $userid && $fullname && $email;

	# instantiate an author object
 	my $userobj = $CPAN::META->instance('CPAN::Author',$userid);
	$userobj->set('FULLNAME' => $fullname, 'EMAIL' => $email);
	return if $CPAN::Signal;
    }
}

sub userid {
  my($self,$dist) = @_;
  $dist = $self->{'id'} unless defined $dist;
  my($ret) = $dist =~ m|(?:\w/\w\w/)?([^/]+)/|;
  $ret;
}

#-> sub CPAN::Index::rd_modpacks ;
sub rd_modpacks {
    my($cl, $index_target) = @_;
    my @lines;
    return unless defined $index_target;
    $CPAN::Frontend->myprint("Going to read $index_target\n");
    my $fh = CPAN::Tarzip->TIEHANDLE($index_target);
    local($/) = "\n";
    while ($_ = $fh->READLINE) {
	s/\012/\n/g;
	my @ls = map {"$_\n"} split /\n/, $_;
	unshift @ls, "\n" x length($1) if /^(\n+)/;
	push @lines, @ls;
    }
    # read header
    my $line_count;
    while (@lines) {
	my $shift = shift(@lines);
	$shift =~ /^Line-Count:\s+(\d+)/;
	$line_count = $1 if $1;
	last if $shift =~ /^\s*$/;
    }
    if (not defined $line_count) {
	warn qq{Warning: Your $index_target does not contain a Line-Count header.
Please check the validity of the index file by comparing it to more than one CPAN
mirror. I'll continue but problems seem likely to happen.\a
};
	sleep 5;
    } elsif ($line_count != scalar @lines) {

	warn sprintf qq{Warning: Your %s
contains a Line-Count header of %d but I see %d lines there. Please
check the validity of the index file by comparing it to more than one
CPAN mirror. I'll continue but problems seem likely to happen.\a\n},
$index_target, $line_count, scalar(@lines);

    }
    foreach (@lines) {
	chomp;
	my($mod,$version,$dist) = split;
###	$version =~ s/^\+//;

	# if it is a bundle, instantiate a bundle object
	my($bundle,$id,$userid);

	if ($mod eq 'CPAN' &&
	    ! (
	       CPAN::Queue->exists('Bundle::CPAN') ||
	       CPAN::Queue->exists('CPAN')
	      )
	   ) {
	    local($^W)= 0;
	    if ($version > $CPAN::VERSION){
		$CPAN::Frontend->myprint(qq{
  There\'s a new CPAN.pm version (v$version) available!
  [Current version is v$CPAN::VERSION]
  You might want to try
    install Bundle::CPAN
    reload cpan
  without quitting the current session. It should be a seamless upgrade
  while we are running...
});
		sleep 2;
		$CPAN::Frontend->myprint(qq{\n});
	    }
	    last if $CPAN::Signal;
	} elsif ($mod =~ /^Bundle::(.*)/) {
	    $bundle = $1;
	}

	if ($bundle){
	    $id =  $CPAN::META->instance('CPAN::Bundle',$mod);
	    # warn "made mod[$mod]a bundle";
	    # Let's make it a module too, because bundles have so much
	    # in common with modules
	    $CPAN::META->instance('CPAN::Module',$mod);
	    # warn "made mod[$mod]a module";

# This "next" makes us faster but if the job is running long, we ignore
# rereads which is bad. So we have to be a bit slower again.
#	} elsif ($CPAN::META->exists('CPAN::Module',$mod)) {
#	    next;

	}
	else {
	    # instantiate a module object
	    $id = $CPAN::META->instance('CPAN::Module',$mod);
	}

	if ($id->cpan_file ne $dist){
	    $userid = $cl->userid($dist);
	    $id->set(
		     'CPAN_USERID' => $userid,
		     'CPAN_VERSION' => $version,
		     'CPAN_FILE' => $dist
		    );
	}

	# instantiate a distribution object
	if ($CPAN::META->exists('CPAN::Distribution',$dist)) {
	  # we do not need CONTAINSMODS unless we do something with
	  # this dist, so we better produce it on demand.

	  ## my $obj = $CPAN::META->instance(
	  ## 				  'CPAN::Distribution' => $dist
	  ## 				 );
	  ## $obj->{CONTAINSMODS}{$mod} = undef; # experimental
	} else {
	  $CPAN::META->instance(
				'CPAN::Distribution' => $dist
			       )->set(
				      'CPAN_USERID' => $userid
				     );
	}

	return if $CPAN::Signal;
    }
    undef $fh;
}

#-> sub CPAN::Index::rd_modlist ;
sub rd_modlist {
    my($cl,$index_target) = @_;
    return unless defined $index_target;
    $CPAN::Frontend->myprint("Going to read $index_target\n");
    my $fh = CPAN::Tarzip->TIEHANDLE($index_target);
    my @eval;
    local($/) = "\n";
    while ($_ = $fh->READLINE) {
	s/\012/\n/g;
	my @ls = map {"$_\n"} split /\n/, $_;
	unshift @ls, "\n" x length($1) if /^(\n+)/;
	push @eval, @ls;
    }
    while (@eval) {
	my $shift = shift(@eval);
	if ($shift =~ /^Date:\s+(.*)/){
	    return if $date_of_03 eq $1;
	    ($date_of_03) = $1;
	}
	last if $shift =~ /^\s*$/;
    }
    undef $fh;
    push @eval, q{CPAN::Modulelist->data;};
    local($^W) = 0;
    my($comp) = Safe->new("CPAN::Safe1");
    my($eval) = join("", @eval);
    my $ret = $comp->reval($eval);
    Carp::confess($@) if $@;
    return if $CPAN::Signal;
    for (keys %$ret) {
	my $obj = $CPAN::META->instance(CPAN::Module,$_);
	$obj->set(%{$ret->{$_}});
	return if $CPAN::Signal;
    }
}

package CPAN::InfoObj;

#-> sub CPAN::InfoObj::new ;
sub new { my $this = bless {}, shift; %$this = @_; $this }

#-> sub CPAN::InfoObj::set ;
sub set {
    my($self,%att) = @_;
    my(%oldatt) = %$self;
    %$self = (%oldatt, %att);
}

#-> sub CPAN::InfoObj::id ;
sub id { shift->{'ID'} }

#-> sub CPAN::InfoObj::as_glimpse ;
sub as_glimpse {
    my($self) = @_;
    my(@m);
    my $class = ref($self);
    $class =~ s/^CPAN:://;
    push @m, sprintf "%-15s %s\n", $class, $self->{ID};
    join "", @m;
}

#-> sub CPAN::InfoObj::as_string ;
sub as_string {
    my($self) = @_;
    my(@m);
    my $class = ref($self);
    $class =~ s/^CPAN:://;
    push @m, $class, " id = $self->{ID}\n";
    for (sort keys %$self) {
	next if $_ eq 'ID';
	my $extra = "";
	if ($_ eq "CPAN_USERID") {
	  $extra .= " (".$self->author;
	  my $email; # old perls!
	  if ($email = $CPAN::META->instance(CPAN::Author,
						$self->{$_}
					       )->email) {
	    $extra .= " <$email>";
	  } else {
	    $extra .= " <no email>";
	  }
	  $extra .= ")";
	}
	if (ref($self->{$_}) eq "ARRAY") { # language interface? XXX
	  push @m, sprintf "    %-12s %s%s\n", $_, "@{$self->{$_}}", $extra;
	} elsif (ref($self->{$_}) eq "HASH") {
	  push @m, sprintf(
			   "    %-12s %s%s\n",
			   $_,
			   join(" ",keys %{$self->{$_}}),
			   $extra);
	} else {
	  push @m, sprintf "    %-12s %s%s\n", $_, $self->{$_}, $extra;
	}
    }
    join "", @m, "\n";
}

#-> sub CPAN::InfoObj::author ;
sub author {
    my($self) = @_;
    $CPAN::META->instance(CPAN::Author,$self->{CPAN_USERID})->fullname;
}

sub dump {
  my($self) = @_;
  require Data::Dumper;
  Data::Dumper::Dumper($self);
}

package CPAN::Author;

#-> sub CPAN::Author::as_glimpse ;
sub as_glimpse {
    my($self) = @_;
    my(@m);
    my $class = ref($self);
    $class =~ s/^CPAN:://;
    push @m, sprintf "%-15s %s (%s)\n", $class, $self->{ID}, $self->fullname;
    join "", @m;
}

# Dead code, I would have liked to have,,, but it was never reached,,,
#sub make {
#    my($self) = @_;
#    return "Don't be silly, you can't make $self->{FULLNAME} ;-)\n";
#}

#-> sub CPAN::Author::fullname ;
sub fullname { shift->{'FULLNAME'} }
*name = \&fullname;

#-> sub CPAN::Author::email ;
sub email    { shift->{'EMAIL'} }

package CPAN::Distribution;

#-> sub CPAN::Distribution::as_string ;
sub as_string {
  my $self = shift;
  $self->containsmods;
  $self->SUPER::as_string(@_);
}

#-> sub CPAN::Distribution::containsmods ;
sub containsmods {
  my $self = shift;
  return if exists $self->{CONTAINSMODS};
  for my $mod ($CPAN::META->all_objects("CPAN::Module")) {
    my $mod_file = $mod->{CPAN_FILE} or next;
    my $dist_id = $self->{ID} or next;
    my $mod_id = $mod->{ID} or next;
    $self->{CONTAINSMODS}{$mod_id} = undef if $mod_file eq $dist_id;
  }
}

#-> sub CPAN::Distribution::called_for ;
sub called_for {
    my($self,$id) = @_;
    $self->{'CALLED_FOR'} = $id if defined $id;
    return $self->{'CALLED_FOR'};
}

#-> sub CPAN::Distribution::get ;
sub get {
    my($self) = @_;
  EXCUSE: {
	my @e;
	exists $self->{'build_dir'} and push @e,
	    "Unwrapped into directory $self->{'build_dir'}";
	$CPAN::Frontend->myprint(join "", map {"  $_\n"} @e) and return if @e;
    }
    my($local_file);
    my($local_wanted) =
	 MM->catfile(
			$CPAN::Config->{keep_source_where},
			"authors",
			"id",
			split("/",$self->{ID})
		       );

    $self->debug("Doing localize") if $CPAN::DEBUG;
    $local_file =
	CPAN::FTP->localize("authors/id/$self->{ID}", $local_wanted)
	    or $CPAN::Frontend->mydie("Giving up on '$local_wanted'\n");
    $self->{localfile} = $local_file;
    my $builddir = $CPAN::META->{cachemgr}->dir;
    $self->debug("doing chdir $builddir") if $CPAN::DEBUG;
    chdir $builddir or Carp::croak("Couldn't chdir $builddir: $!");
    my $packagedir;

    $self->debug("local_file[$local_file]") if $CPAN::DEBUG;
    if ($CPAN::META->has_inst('MD5')) {
	$self->debug("MD5 is installed, verifying");
	$self->verifyMD5;
    } else {
	$self->debug("MD5 is NOT installed");
    }
    $self->debug("Removing tmp") if $CPAN::DEBUG;
    File::Path::rmtree("tmp");
    mkdir "tmp", 0755 or Carp::croak "Couldn't mkdir tmp: $!";
    chdir "tmp";
    $self->debug("Changed directory to tmp") if $CPAN::DEBUG;
    if (! $local_file) {
	Carp::croak "bad download, can't do anything :-(\n";
    } elsif ($local_file =~ /(\.tar\.(gz|Z)|\.tgz)$/i){
	$self->untar_me($local_file);
    } elsif ( $local_file =~ /\.zip$/i ) {
	$self->unzip_me($local_file);
    } elsif ( $local_file =~ /\.pm\.(gz|Z)$/) {
	$self->pm2dir_me($local_file);
    } else {
	$self->{archived} = "NO";
    }
    chdir File::Spec->updir;
    if ($self->{archived} ne 'NO') {
	chdir File::Spec->catdir(File::Spec->curdir, "tmp");
	# Let's check if the package has its own directory.
	my $dh = DirHandle->new(File::Spec->curdir)
	    or Carp::croak("Couldn't opendir .: $!");
	my @readdir = grep $_ !~ /^\.\.?$/s, $dh->read; ### MAC??
	$dh->close;
	my ($distdir,$packagedir);
	if (@readdir == 1 && -d $readdir[0]) {
	    $distdir = $readdir[0];
	    $packagedir = MM->catdir($builddir,$distdir);
	    -d $packagedir and $CPAN::Frontend->myprint("Removing previously used $packagedir\n");
	    File::Path::rmtree($packagedir);
	    rename($distdir,$packagedir) or Carp::confess("Couldn't rename $distdir to $packagedir: $!");
	} else {
	    my $pragmatic_dir = $self->{'CPAN_USERID'} . '000';
	    $pragmatic_dir =~ s/\W_//g;
	    $pragmatic_dir++ while -d "../$pragmatic_dir";
	    $packagedir = MM->catdir($builddir,$pragmatic_dir);
	    File::Path::mkpath($packagedir);
	    my($f);
	    for $f (@readdir) { # is already without "." and ".."
		my $to = MM->catdir($packagedir,$f);
		rename($f,$to) or Carp::confess("Couldn't rename $f to $to: $!");
	    }
	}
	$self->{'build_dir'} = $packagedir;
	chdir File::Spec->updir;

	$self->debug("Changed directory to .. (self is $self [".$self->as_string."])")
	    if $CPAN::DEBUG;
	File::Path::rmtree("tmp");
	if ($CPAN::Config->{keep_source_where} =~ /^no/i ){
	    $CPAN::Frontend->myprint("Going to unlink $local_file\n");
	    unlink $local_file or Carp::carp "Couldn't unlink $local_file";
	}
	my($makefilepl) = MM->catfile($packagedir,"Makefile.PL");
	unless (-f $makefilepl) {
	  my($configure) = MM->catfile($packagedir,"Configure");
	  if (-f $configure) {
	    # do we have anything to do?
	    $self->{'configure'} = $configure;
	  } elsif (-f MM->catfile($packagedir,"Makefile")) {
	    $CPAN::Frontend->myprint(qq{
Package comes with a Makefile and without a Makefile.PL.
We\'ll try to build it with that Makefile then.
});
	    $self->{writemakefile} = "YES";
	    sleep 2;
	  } else {
	    my $fh = FileHandle->new(">$makefilepl")
		or Carp::croak("Could not open >$makefilepl");
	    my $cf = $self->called_for || "unknown";
	    $fh->print(
qq{# This Makefile.PL has been autogenerated by the module CPAN.pm
# because there was no Makefile.PL supplied.
# Autogenerated on: }.scalar localtime().qq{

use ExtUtils::MakeMaker;
WriteMakefile(NAME => q[$cf]);

});
	    $CPAN::Frontend->myprint(qq{Package comes without Makefile.PL.
  Writing one on our own (calling it $cf)\n});
	    }
	}
    }
    return $self;
}

sub untar_me {
    my($self,$local_file) = @_;
    $self->{archived} = "tar";
    if (CPAN::Tarzip->untar($local_file)) {
	$self->{unwrapped} = "YES";
    } else {
	$self->{unwrapped} = "NO";
    }
}

sub unzip_me {
    my($self,$local_file) = @_;
    if ($CPAN::META->has_inst("Archive::Zip")) {
      $CPAN::Frontend->mywarn("Archive::Zip not yet supported. ".
                              "Will use external unzip");
    }
    my $unzip = $CPAN::Config->{unzip} or
        $CPAN::Frontend->mydie("Cannot unzip, no unzip program available");
    $self->{archived} = "zip";
    my @system = ($unzip, $local_file);
    if (system(@system) == 0) {
	$self->{unwrapped} = "YES";
    } else {
	$self->{unwrapped} = "NO";
    }
}

sub pm2dir_me {
    my($self,$local_file) = @_;
    $self->{archived} = "pm";
    my $to = File::Basename::basename($local_file);
    $to =~ s/\.(gz|Z)$//;
    if (CPAN::Tarzip->gunzip($local_file,$to)) {
	$self->{unwrapped} = "YES";
    } else {
	$self->{unwrapped} = "NO";
    }
}

#-> sub CPAN::Distribution::new ;
sub new {
    my($class,%att) = @_;

    $CPAN::META->{cachemgr} ||= CPAN::CacheMgr->new();

    my $this = { %att };
    return bless $this, $class;
}

#-> sub CPAN::Distribution::look ;
sub look {
    my($self) = @_;

    if ($^O eq 'MacOS') {
      $self->ExtUtils::MM_MacOS::look;
      return;
    }

    if (  $CPAN::Config->{'shell'} ) {
	$CPAN::Frontend->myprint(qq{
Trying to open a subshell in the build directory...
});
    } else {
	$CPAN::Frontend->myprint(qq{
Your configuration does not define a value for subshells.
Please define it with "o conf shell <your shell>"
});
	return;
    }
    my $dist = $self->id;
    my $dir  = $self->dir or $self->get;
    $dir = $self->dir;
    my $getcwd;
    $getcwd = $CPAN::Config->{'getcwd'} || 'cwd';
    my $pwd  = CPAN->$getcwd();
    chdir($dir);
    $CPAN::Frontend->myprint(qq{Working directory is $dir\n});
    system($CPAN::Config->{'shell'}) == 0
	or $CPAN::Frontend->mydie("Subprocess shell error");
    chdir($pwd);
}

sub cvs_import {
    my($self) = @_;
    $self->get;
    my $dir = $self->dir;

    my $package = $self->called_for;
    my $module = $CPAN::META->instance('CPAN::Module', $package);
    my $version = $module->cpan_version;

    my $userid = $self->{CPAN_USERID};

    my $cvs_dir = (split '/', $dir)[-1];
    $cvs_dir =~ s/-\d+[^-]+$//;
    my $cvs_root = 
      $CPAN::Config->{cvsroot} || $ENV{CVSROOT};
    my $cvs_site_perl = 
      $CPAN::Config->{cvs_site_perl} || $ENV{CVS_SITE_PERL};
    if ($cvs_site_perl) {
	$cvs_dir = "$cvs_site_perl/$cvs_dir";
    }
    my $cvs_log = qq{"imported $package $version sources"};
    $version =~ s/\./_/g;
    my @cmd = ('cvs', '-d', $cvs_root, 'import', '-m', $cvs_log,
	       "$cvs_dir", $userid, "v$version");

    my $getcwd;
    $getcwd = $CPAN::Config->{'getcwd'} || 'cwd';
    my $pwd  = CPAN->$getcwd();
    chdir($dir);

    $CPAN::Frontend->myprint(qq{Working directory is $dir\n});

    $CPAN::Frontend->myprint(qq{@cmd\n});
    system(@cmd) == 0 or
	$CPAN::Frontend->mydie("cvs import failed");
    chdir($pwd);
}

#-> sub CPAN::Distribution::readme ;
sub readme {
    my($self) = @_;
    my($dist) = $self->id;
    my($sans,$suffix) = $dist =~ /(.+)\.(tgz|tar[\._-]gz|tar\.Z|zip)$/;
    $self->debug("sans[$sans] suffix[$suffix]\n") if $CPAN::DEBUG;
    my($local_file);
    my($local_wanted) =
	 MM->catfile(
			$CPAN::Config->{keep_source_where},
			"authors",
			"id",
			split("/","$sans.readme"),
		       );
    $self->debug("Doing localize") if $CPAN::DEBUG;
    $local_file = CPAN::FTP->localize("authors/id/$sans.readme",
				      $local_wanted)
	or $CPAN::Frontend->mydie(qq{No $sans.readme found});;

    if ($^O eq 'MacOS') {
        ExtUtils::MM_MacOS::launch_file($local_file);
        return;
    }

    my $fh_pager = FileHandle->new;
    local($SIG{PIPE}) = "IGNORE";
    $fh_pager->open("|$CPAN::Config->{'pager'}")
	or die "Could not open pager $CPAN::Config->{'pager'}: $!";
    my $fh_readme = FileHandle->new;
    $fh_readme->open($local_file)
	or $CPAN::Frontend->mydie(qq{Could not open "$local_file": $!});
    $CPAN::Frontend->myprint(qq{
Displaying file
  $local_file
with pager "$CPAN::Config->{'pager'}"
});
    sleep 2;
    $fh_pager->print(<$fh_readme>);
}

#-> sub CPAN::Distribution::verifyMD5 ;
sub verifyMD5 {
    my($self) = @_;
  EXCUSE: {
	my @e;
	$self->{MD5_STATUS} ||= "";
	$self->{MD5_STATUS} eq "OK" and push @e, "MD5 Checksum was ok";
	$CPAN::Frontend->myprint(join "", map {"  $_\n"} @e) and return if @e;
    }
    my($lc_want,$lc_file,@local,$basename);
    @local = split("/",$self->{ID});
    pop @local;
    push @local, "CHECKSUMS";
    $lc_want =
	MM->catfile($CPAN::Config->{keep_source_where},
		      "authors", "id", @local);
    local($") = "/";
    if (
	-s $lc_want
	&&
	$self->MD5_check_file($lc_want)
       ) {
	return $self->{MD5_STATUS} = "OK";
    }
    $lc_file = CPAN::FTP->localize("authors/id/@local",
				   $lc_want,1);
    unless ($lc_file) {
	$local[-1] .= ".gz";
	$lc_file = CPAN::FTP->localize("authors/id/@local",
				       "$lc_want.gz",1);
	if ($lc_file) {
	    $lc_file =~ s/\.gz$//;
	    CPAN::Tarzip->gunzip("$lc_file.gz",$lc_file);
	} else {
	    return;
	}
    }
    $self->MD5_check_file($lc_file);
}

#-> sub CPAN::Distribution::MD5_check_file ;
sub MD5_check_file {
    my($self,$chk_file) = @_;
    my($cksum,$file,$basename);
    $file = $self->{localfile};
    $basename = File::Basename::basename($file);
    my $fh = FileHandle->new;
    if (open $fh, $chk_file){
	local($/);
	my $eval = <$fh>;
	$eval =~ s/\015?\012/\n/g;
	close $fh;
	my($comp) = Safe->new();
	$cksum = $comp->reval($eval);
	if ($@) {
	    rename $chk_file, "$chk_file.bad";
	    Carp::confess($@) if $@;
	}
    } else {
	Carp::carp "Could not open $chk_file for reading";
    }

    if (exists $cksum->{$basename}{md5}) {
	$self->debug("Found checksum for $basename:" .
		     "$cksum->{$basename}{md5}\n") if $CPAN::DEBUG;

	open($fh, $file);
	binmode $fh;
	my $eq = $self->eq_MD5($fh,$cksum->{$basename}{'md5'});
	$fh->close;
	$fh = CPAN::Tarzip->TIEHANDLE($file);

	unless ($eq) {
	  # had to inline it, when I tied it, the tiedness got lost on
	  # the call to eq_MD5. (Jan 1998)
	  my $md5 = MD5->new;
	  my($data,$ref);
	  $ref = \$data;
	  while ($fh->READ($ref, 4096) > 0){
	    $md5->add($data);
	  }
	  my $hexdigest = $md5->hexdigest;
	  $eq += $hexdigest eq $cksum->{$basename}{'md5-ungz'};
	}

	if ($eq) {
	  $CPAN::Frontend->myprint("Checksum for $file ok\n");
	  return $self->{MD5_STATUS} = "OK";
	} else {
	    $CPAN::Frontend->myprint(qq{\nChecksum mismatch for }.
				     qq{distribution file. }.
				     qq{Please investigate.\n\n}.
				     $self->as_string,
				     $CPAN::META->instance(
							   'CPAN::Author',
							   $self->{CPAN_USERID}
							  )->as_string);

	    my $wrap = qq{I\'d recommend removing $file. Its MD5
checksum is incorrect. Maybe you have configured your \`urllist\' with
a bad URL. Please check this array with \`o conf urllist\', and
retry.};

	    $CPAN::Frontend->myprint(Text::Wrap::wrap("","",$wrap));
	    $CPAN::Frontend->myprint("\n\n");
	    sleep 3;
	    return;
	}
	# close $fh if fileno($fh);
    } else {
	$self->{MD5_STATUS} ||= "";
	if ($self->{MD5_STATUS} eq "NIL") {
	    $CPAN::Frontend->myprint(qq{
No md5 checksum for $basename in local $chk_file.
Removing $chk_file
});
	    unlink $chk_file or $CPAN::Frontend->myprint("Could not unlink: $!");
	    sleep 1;
	}
	$self->{MD5_STATUS} = "NIL";
	return;
    }
}

#-> sub CPAN::Distribution::eq_MD5 ;
sub eq_MD5 {
    my($self,$fh,$expectMD5) = @_;
    my $md5 = MD5->new;
    my($data);
    while (read($fh, $data, 4096)){
      $md5->add($data);
    }
    # $md5->addfile($fh);
    my $hexdigest = $md5->hexdigest;
    # warn "fh[$fh] hex[$hexdigest] aexp[$expectMD5]";
    $hexdigest eq $expectMD5;
}

#-> sub CPAN::Distribution::force ;
sub force {
  my($self) = @_;
  $self->{'force_update'}++;
  for my $att (qw(
  MD5_STATUS archived build_dir localfile make install unwrapped
  writemakefile
 )) {
    delete $self->{$att};
  }
}

#-> sub CPAN::Distribution::isa_perl ;
sub isa_perl {
  my($self) = @_;
  my $file = File::Basename::basename($self->id);
  return unless $file =~ m{ ^ perl
                            -?
			    (5)
			    ([._-])
			    (
                             \d{3}(_[0-4][0-9])?
                             |
                             \d*[24680]\.\d+
                            )
			    \.tar[._-]gz
			    $
			  }xs;
  "$1.$3";
}

#-> sub CPAN::Distribution::perl ;
sub perl {
    my($self) = @_;
    my($perl) = MM->file_name_is_absolute($^X) ? $^X : "";
    my $getcwd = $CPAN::Config->{'getcwd'} || 'cwd';
    my $pwd  = CPAN->$getcwd();
    my $candidate = MM->catfile($pwd,$^X);
    $perl ||= $candidate if MM->maybe_command($candidate);
    unless ($perl) {
	my ($component,$perl_name);
      DIST_PERLNAME: foreach $perl_name ($^X, 'perl', 'perl5', "perl$]") {
	    PATH_COMPONENT: foreach $component (MM->path(),
						$Config::Config{'binexp'}) {
		  next unless defined($component) && $component;
		  my($abs) = MM->catfile($component,$perl_name);
		  if (MM->maybe_command($abs)) {
		      $perl = $abs;
		      last DIST_PERLNAME;
		  }
	      }
	  }
    }
    $perl;
}

#-> sub CPAN::Distribution::make ;
sub make {
    my($self) = @_;
    $CPAN::Frontend->myprint(sprintf "Running make for %s\n", $self->id);
    # Emergency brake if they said install Pippi and get newest perl
    if ($self->isa_perl) {
      if (
	  $self->called_for ne $self->id && ! $self->{'force_update'}
	 ) {
        # if we die here, we break bundles
	$CPAN::Frontend->mywarn(sprintf qq{
The most recent version "%s" of the module "%s"
comes with the current version of perl (%s).
I\'ll build that only if you ask for something like
    force install %s
or
    install %s
},
			       $CPAN::META->instance(
						     'CPAN::Module',
						     $self->called_for
						    )->cpan_version,
			       $self->called_for,
			       $self->isa_perl,
			       $self->called_for,
			       $self->id);
        sleep 5; return;
      }
    }
    $self->get;
  EXCUSE: {
	my @e;
	$self->{archived} eq "NO" and push @e,
	"Is neither a tar nor a zip archive.";

	$self->{unwrapped} eq "NO" and push @e,
	"had problems unarchiving. Please build manually";

	exists $self->{writemakefile} &&
	    $self->{writemakefile} =~ m/ ^ NO\s* ( .* ) /sx and push @e,
		$1 || "Had some problem writing Makefile";

	defined $self->{'make'} and push @e,
	"Has already been processed within this session";

	$CPAN::Frontend->myprint(join "", map {"  $_\n"} @e) and return if @e;
    }
    $CPAN::Frontend->myprint("\n  CPAN.pm: Going to build ".$self->id."\n\n");
    my $builddir = $self->dir;
    chdir $builddir or Carp::croak("Couldn't chdir $builddir: $!");
    $self->debug("Changed directory to $builddir") if $CPAN::DEBUG;

    if ($^O eq 'MacOS') {
        ExtUtils::MM_MacOS::make($self);
        return;
    }

    my $system;
    if ($self->{'configure'}) {
      $system = $self->{'configure'};
    } else {
	my($perl) = $self->perl or die "Couldn\'t find executable perl\n";
	my $switch = "";
# This needs a handler that can be turned on or off:
#	$switch = "-MExtUtils::MakeMaker ".
#	    "-Mops=:default,:filesys_read,:filesys_open,require,chdir"
#	    if $] > 5.00310;
	$system = "$perl $switch Makefile.PL $CPAN::Config->{makepl_arg}";
    }
    unless (exists $self->{writemakefile}) {
	local($SIG{ALRM}) = sub { die "inactivity_timeout reached\n" };
	my($ret,$pid);
	$@ = "";
	if ($CPAN::Config->{inactivity_timeout}) {
	    eval {
		alarm $CPAN::Config->{inactivity_timeout};
		local $SIG{CHLD}; # = sub { wait };
		if (defined($pid = fork)) {
		    if ($pid) { #parent
			# wait;
			waitpid $pid, 0;
		    } else {    #child
		      # note, this exec isn't necessary if
		      # inactivity_timeout is 0. On the Mac I'd
		      # suggest, we set it always to 0.
		      exec $system;
		    }
		} else {
		    $CPAN::Frontend->myprint("Cannot fork: $!");
		    return;
		}
	    };
	    alarm 0;
	    if ($@){
		kill 9, $pid;
		waitpid $pid, 0;
		$CPAN::Frontend->myprint($@);
		$self->{writemakefile} = "NO $@";
		$@ = "";
		return;
	    }
	} else {
	  $ret = system($system);
	  if ($ret != 0) {
	    $self->{writemakefile} = "NO Makefile.PL returned status $ret";
	    return;