# -*- Mode: cperl; coding: utf-8; cperl-indent-level: 4 -*-
package CPAN::Debug;
use strict;
use vars qw($VERSION);

$VERSION = "5.5001";
# module is internal to CPAN.pm

%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
HandleConfig 4096
Tarzip 8192
Version 16384
Queue 32768
FirstTime 65536
];

$CPAN::DEBUG ||= 0;

#-> sub CPAN::Debug::debug ;
sub debug {
my($self,$arg) = @_;

my @caller;
my $i = 0;
while () {
my(@c) = (caller($i))[0 .. ($i ? 3 : 2)];
last unless defined $c[0];
push @caller, \@c;
for (0,3) {
last if $_ > $#c;
$c[$_] =~ s/.*:://;
}
for (1) {
$c[$_] =~ s|.*/||;
}
last if ++$i>=3;
}
pop @caller;
if ($CPAN::DEBUG{$caller[0][0]} & $CPAN::DEBUG) {
if ($arg and ref $arg) {
eval { require Data::Dumper };
if ($@) {
$CPAN::Frontend->myprint("Debug(\n" . $arg->as_string . ")\n");
} else {
$CPAN::Frontend->myprint("Debug(\n" . Data::Dumper::Dumper($arg) . ")\n");
}
} else {
my $outer = "";
local $" = ",";
if (@caller>1) {
$outer = ",[@{$caller[1]}]";
}
$CPAN::Frontend->myprint("Debug(@{$caller[0]}$outer): $arg\n");
}
}
}

1;

__END__

=head1 NAME

CPAN::Debug - internal debugging for CPAN.pm

=head1 LICENSE

This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.

=cut