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Diff of /Web-Plugin-RANCID/inc/Module/Install.pm [000000] .. [913a75] Maximize Restore

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+++ b/Web-Plugin-RANCID/inc/Module/Install.pm
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+#line 1
+package Module::Install;
+
+# For any maintainers:
+# The load order for Module::Install is a bit magic.
+# It goes something like this...
+#
+# IF ( host has Module::Install installed, creating author mode ) {
+#     1. Makefile.PL calls "use inc::Module::Install"
+#     2. $INC{inc/Module/Install.pm} set to installed version of inc::Module::Install
+#     3. The installed version of inc::Module::Install loads
+#     4. inc::Module::Install calls "require Module::Install"
+#     5. The ./inc/ version of Module::Install loads
+# } ELSE {
+#     1. Makefile.PL calls "use inc::Module::Install"
+#     2. $INC{inc/Module/Install.pm} set to ./inc/ version of Module::Install
+#     3. The ./inc/ version of Module::Install loads
+# }
+
+use 5.005;
+use strict 'vars';
+use Cwd        ();
+use File::Find ();
+use File::Path ();
+
+use vars qw{$VERSION $MAIN};
+BEGIN {
+	# All Module::Install core packages now require synchronised versions.
+	# This will be used to ensure we don't accidentally load old or
+	# different versions of modules.
+	# This is not enforced yet, but will be some time in the next few
+	# releases once we can make sure it won't clash with custom
+	# Module::Install extensions.
+	$VERSION = '1.06';
+
+	# Storage for the pseudo-singleton
+	$MAIN    = undef;
+
+	*inc::Module::Install::VERSION = *VERSION;
+	@inc::Module::Install::ISA     = __PACKAGE__;
+
+}
+
+sub import {
+	my $class = shift;
+	my $self  = $class->new(@_);
+	my $who   = $self->_caller;
+
+	#-------------------------------------------------------------
+	# all of the following checks should be included in import(),
+	# to allow "eval 'require Module::Install; 1' to test
+	# installation of Module::Install. (RT #51267)
+	#-------------------------------------------------------------
+
+	# Whether or not inc::Module::Install is actually loaded, the
+	# $INC{inc/Module/Install.pm} is what will still get set as long as
+	# the caller loaded module this in the documented manner.
+	# If not set, the caller may NOT have loaded the bundled version, and thus
+	# they may not have a MI version that works with the Makefile.PL. This would
+	# result in false errors or unexpected behaviour. And we don't want that.
+	my $file = join( '/', 'inc', split /::/, __PACKAGE__ ) . '.pm';
+	unless ( $INC{$file} ) { die <<"END_DIE" }
+
+Please invoke ${\__PACKAGE__} with:
+
+	use inc::${\__PACKAGE__};
+
+not:
+
+	use ${\__PACKAGE__};
+
+END_DIE
+
+	# This reportedly fixes a rare Win32 UTC file time issue, but
+	# as this is a non-cross-platform XS module not in the core,
+	# we shouldn't really depend on it. See RT #24194 for detail.
+	# (Also, this module only supports Perl 5.6 and above).
+	eval "use Win32::UTCFileTime" if $^O eq 'MSWin32' && $] >= 5.006;
+
+	# If the script that is loading Module::Install is from the future,
+	# then make will detect this and cause it to re-run over and over
+	# again. This is bad. Rather than taking action to touch it (which
+	# is unreliable on some platforms and requires write permissions)
+	# for now we should catch this and refuse to run.
+	if ( -f $0 ) {
+		my $s = (stat($0))[9];
+
+		# If the modification time is only slightly in the future,
+		# sleep briefly to remove the problem.
+		my $a = $s - time;
+		if ( $a > 0 and $a < 5 ) { sleep 5 }
+
+		# Too far in the future, throw an error.
+		my $t = time;
+		if ( $s > $t ) { die <<"END_DIE" }
+
+Your installer $0 has a modification time in the future ($s > $t).
+
+This is known to create infinite loops in make.
+
+Please correct this, then run $0 again.
+
+END_DIE
+	}
+
+
+	# Build.PL was formerly supported, but no longer is due to excessive
+	# difficulty in implementing every single feature twice.
+	if ( $0 =~ /Build.PL$/i ) { die <<"END_DIE" }
+
+Module::Install no longer supports Build.PL.
+
+It was impossible to maintain duel backends, and has been deprecated.
+
+Please remove all Build.PL files and only use the Makefile.PL installer.
+
+END_DIE
+
+	#-------------------------------------------------------------
+
+	# To save some more typing in Module::Install installers, every...
+	# use inc::Module::Install
+	# ...also acts as an implicit use strict.
+	$^H |= strict::bits(qw(refs subs vars));
+
+	#-------------------------------------------------------------
+
+	unless ( -f $self->{file} ) {
+		foreach my $key (keys %INC) {
+			delete $INC{$key} if $key =~ /Module\/Install/;
+		}
+
+		local $^W;
+		require "$self->{path}/$self->{dispatch}.pm";
+		File::Path::mkpath("$self->{prefix}/$self->{author}");
+		$self->{admin} = "$self->{name}::$self->{dispatch}"->new( _top => $self );
+		$self->{admin}->init;
+		@_ = ($class, _self => $self);
+		goto &{"$self->{name}::import"};
+	}
+
+	local $^W;
+	*{"${who}::AUTOLOAD"} = $self->autoload;
+	$self->preload;
+
+	# Unregister loader and worker packages so subdirs can use them again
+	delete $INC{'inc/Module/Install.pm'};
+	delete $INC{'Module/Install.pm'};
+
+	# Save to the singleton
+	$MAIN = $self;
+
+	return 1;
+}
+
+sub autoload {
+	my $self = shift;
+	my $who  = $self->_caller;
+	my $cwd  = Cwd::cwd();
+	my $sym  = "${who}::AUTOLOAD";
+	$sym->{$cwd} = sub {
+		my $pwd = Cwd::cwd();
+		if ( my $code = $sym->{$pwd} ) {
+			# Delegate back to parent dirs
+			goto &$code unless $cwd eq $pwd;
+		}
+		unless ($$sym =~ s/([^:]+)$//) {
+			# XXX: it looks like we can't retrieve the missing function
+			# via $$sym (usually $main::AUTOLOAD) in this case.
+			# I'm still wondering if we should slurp Makefile.PL to
+			# get some context or not ...
+			my ($package, $file, $line) = caller;
+			die <<"EOT";
+Unknown function is found at $file line $line.
+Execution of $file aborted due to runtime errors.
+
+If you're a contributor to a project, you may need to install
+some Module::Install extensions from CPAN (or other repository).
+If you're a user of a module, please contact the author.
+EOT
+		}
+		my $method = $1;
+		if ( uc($method) eq $method ) {
+			# Do nothing
+			return;
+		} elsif ( $method =~ /^_/ and $self->can($method) ) {
+			# Dispatch to the root M:I class
+			return $self->$method(@_);
+		}
+
+		# Dispatch to the appropriate plugin
+		unshift @_, ( $self, $1 );
+		goto &{$self->can('call')};
+	};
+}
+
+sub preload {
+	my $self = shift;
+	unless ( $self->{extensions} ) {
+		$self->load_extensions(
+			"$self->{prefix}/$self->{path}", $self
+		);
+	}
+
+	my @exts = @{$self->{extensions}};
+	unless ( @exts ) {
+		@exts = $self->{admin}->load_all_extensions;
+	}
+
+	my %seen;
+	foreach my $obj ( @exts ) {
+		while (my ($method, $glob) = each %{ref($obj) . '::'}) {
+			next unless $obj->can($method);
+			next if $method =~ /^_/;
+			next if $method eq uc($method);
+			$seen{$method}++;
+		}
+	}
+
+	my $who = $self->_caller;
+	foreach my $name ( sort keys %seen ) {
+		local $^W;
+		*{"${who}::$name"} = sub {
+			${"${who}::AUTOLOAD"} = "${who}::$name";
+			goto &{"${who}::AUTOLOAD"};
+		};
+	}
+}
+
+sub new {
+	my ($class, %args) = @_;
+
+	delete $INC{'FindBin.pm'};
+	{
+		# to suppress the redefine warning
+		local $SIG{__WARN__} = sub {};
+		require FindBin;
+	}
+
+	# ignore the prefix on extension modules built from top level.
+	my $base_path = Cwd::abs_path($FindBin::Bin);
+	unless ( Cwd::abs_path(Cwd::cwd()) eq $base_path ) {
+		delete $args{prefix};
+	}
+	return $args{_self} if $args{_self};
+
+	$args{dispatch} ||= 'Admin';
+	$args{prefix}   ||= 'inc';
+	$args{author}   ||= ($^O eq 'VMS' ? '_author' : '.author');
+	$args{bundle}   ||= 'inc/BUNDLES';
+	$args{base}     ||= $base_path;
+	$class =~ s/^\Q$args{prefix}\E:://;
+	$args{name}     ||= $class;
+	$args{version}  ||= $class->VERSION;
+	unless ( $args{path} ) {
+		$args{path}  = $args{name};
+		$args{path}  =~ s!::!/!g;
+	}
+	$args{file}     ||= "$args{base}/$args{prefix}/$args{path}.pm";
+	$args{wrote}      = 0;
+
+	bless( \%args, $class );
+}
+
+sub call {
+	my ($self, $method) = @_;
+	my $obj = $self->load($method) or return;
+        splice(@_, 0, 2, $obj);
+	goto &{$obj->can($method)};
+}
+
+sub load {
+	my ($self, $method) = @_;
+
+	$self->load_extensions(
+		"$self->{prefix}/$self->{path}", $self
+	) unless $self->{extensions};
+
+	foreach my $obj (@{$self->{extensions}}) {
+		return $obj if $obj->can($method);
+	}
+
+	my $admin = $self->{admin} or die <<"END_DIE";
+The '$method' method does not exist in the '$self->{prefix}' path!
+Please remove the '$self->{prefix}' directory and run $0 again to load it.
+END_DIE
+
+	my $obj = $admin->load($method, 1);
+	push @{$self->{extensions}}, $obj;
+
+	$obj;
+}
+
+sub load_extensions {
+	my ($self, $path, $top) = @_;
+
+	my $should_reload = 0;
+	unless ( grep { ! ref $_ and lc $_ eq lc $self->{prefix} } @INC ) {
+		unshift @INC, $self->{prefix};
+		$should_reload = 1;
+	}
+
+	foreach my $rv ( $self->find_extensions($path) ) {
+		my ($file, $pkg) = @{$rv};
+		next if $self->{pathnames}{$pkg};
+
+		local $@;
+		my $new = eval { local $^W; require $file; $pkg->can('new') };
+		unless ( $new ) {
+			warn $@ if $@;
+			next;
+		}
+		$self->{pathnames}{$pkg} =
+			$should_reload ? delete $INC{$file} : $INC{$file};
+		push @{$self->{extensions}}, &{$new}($pkg, _top => $top );
+	}
+
+	$self->{extensions} ||= [];
+}
+
+sub find_extensions {
+	my ($self, $path) = @_;
+
+	my @found;
+	File::Find::find( sub {
+		my $file = $File::Find::name;
+		return unless $file =~ m!^\Q$path\E/(.+)\.pm\Z!is;
+		my $subpath = $1;
+		return if lc($subpath) eq lc($self->{dispatch});
+
+		$file = "$self->{path}/$subpath.pm";
+		my $pkg = "$self->{name}::$subpath";
+		$pkg =~ s!/!::!g;
+
+		# If we have a mixed-case package name, assume case has been preserved
+		# correctly.  Otherwise, root through the file to locate the case-preserved
+		# version of the package name.
+		if ( $subpath eq lc($subpath) || $subpath eq uc($subpath) ) {
+			my $content = Module::Install::_read($subpath . '.pm');
+			my $in_pod  = 0;
+			foreach ( split //, $content ) {
+				$in_pod = 1 if /^=\w/;
+				$in_pod = 0 if /^=cut/;
+				next if ($in_pod || /^=cut/);  # skip pod text
+				next if /^\s*#/;               # and comments
+				if ( m/^\s*package\s+($pkg)\s*;/i ) {
+					$pkg = $1;
+					last;
+				}
+			}
+		}
+
+		push @found, [ $file, $pkg ];
+	}, $path ) if -d $path;
+
+	@found;
+}
+
+
+
+
+
+#####################################################################
+# Common Utility Functions
+
+sub _caller {
+	my $depth = 0;
+	my $call  = caller($depth);
+	while ( $call eq __PACKAGE__ ) {
+		$depth++;
+		$call = caller($depth);
+	}
+	return $call;
+}
+
+# Done in evals to avoid confusing Perl::MinimumVersion
+eval( $] >= 5.006 ? <<'END_NEW' : <<'END_OLD' ); die $@ if $@;
+sub _read {
+	local *FH;
+	open( FH, '<', $_[0] ) or die "open($_[0]): $!";
+	my $string = do { local $/; <FH> };
+	close FH or die "close($_[0]): $!";
+	return $string;
+}
+END_NEW
+sub _read {
+	local *FH;
+	open( FH, "< $_[0]"  ) or die "open($_[0]): $!";
+	my $string = do { local $/; <FH> };
+	close FH or die "close($_[0]): $!";
+	return $string;
+}
+END_OLD
+
+sub _readperl {
+	my $string = Module::Install::_read($_[0]);
+	$string =~ s/(?:\015{1,2}\012|\015|\012)/\n/sg;
+	$string =~ s/(\n)\n*__(?:DATA|END)__\b.*\z/$1/s;
+	$string =~ s/\n\n=\w+.+?\n\n=cut\b.+?\n+/\n\n/sg;
+	return $string;
+}
+
+sub _readpod {
+	my $string = Module::Install::_read($_[0]);
+	$string =~ s/(?:\015{1,2}\012|\015|\012)/\n/sg;
+	return $string if $_[0] =~ /\.pod\z/;
+	$string =~ s/(^|\n=cut\b.+?\n+)[^=\s].+?\n(\n=\w+|\z)/$1$2/sg;
+	$string =~ s/\n*=pod\b[^\n]*\n+/\n\n/sg;
+	$string =~ s/\n*=cut\b[^\n]*\n+/\n\n/sg;
+	$string =~ s/^\n+//s;
+	return $string;
+}
+
+# Done in evals to avoid confusing Perl::MinimumVersion
+eval( $] >= 5.006 ? <<'END_NEW' : <<'END_OLD' ); die $@ if $@;
+sub _write {
+	local *FH;
+	open( FH, '>', $_[0] ) or die "open($_[0]): $!";
+	foreach ( 1 .. $#_ ) {
+		print FH $_[$_] or die "print($_[0]): $!";
+	}
+	close FH or die "close($_[0]): $!";
+}
+END_NEW
+sub _write {
+	local *FH;
+	open( FH, "> $_[0]"  ) or die "open($_[0]): $!";
+	foreach ( 1 .. $#_ ) {
+		print FH $_[$_] or die "print($_[0]): $!";
+	}
+	close FH or die "close($_[0]): $!";
+}
+END_OLD
+
+# _version is for processing module versions (eg, 1.03_05) not
+# Perl versions (eg, 5.8.1).
+sub _version ($) {
+	my $s = shift || 0;
+	my $d =()= $s =~ /(\.)/g;
+	if ( $d >= 2 ) {
+		# Normalise multipart versions
+		$s =~ s/(\.)(\d{1,3})/sprintf("$1%03d",$2)/eg;
+	}
+	$s =~ s/^(\d+)\.?//;
+	my $l = $1 || 0;
+	my @v = map {
+		$_ . '0' x (3 - length $_)
+	} $s =~ /(\d{1,3})\D?/g;
+	$l = $l . '.' . join '', @v if @v;
+	return $l + 0;
+}
+
+sub _cmp ($$) {
+	_version($_[1]) <=> _version($_[2]);
+}
+
+# Cloned from Params::Util::_CLASS
+sub _CLASS ($) {
+	(
+		defined $_[0]
+		and
+		! ref $_[0]
+		and
+		$_[0] =~ m/^[^\W\d]\w*(?:::\w+)*\z/s
+	) ? $_[0] : undef;
+}
+
+1;
+
+# Copyright 2008 - 2012 Adam Kennedy.