/usr/share/perl5/vendorlib.pm is in libvendorlib-perl 0.10-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | package vendorlib;
use strict;
use warnings;
use Config;
=head1 NAME
vendorlib - Use Only Core and Vendor Libraries in @INC
=cut
our $VERSION = '0.10';
=head1 SYNOPSIS
#!/usr/bin/perl
use vendorlib;
use strict;
use warnings;
use SomeModule; # will only search in core and vendor paths
...
=head1 DESCRIPTION
In a system distribution such as Debian, it may be advisable for Perl programs
to ignore the user's CPAN-installed modules and only use the
distribution-provided modules to avoid possible breakage with newer and
unpackaged versions of modules.
To that end, this pragma will replace your C<@INC> with only the core and vendor
C<@INC> paths, ignoring site_perl and C<$ENV{PERL5LIB}> entirely.
It is recommended that you put C<use vendorlib;> as the first statement in your
program, before even C<use strict;> and C<use warnings;>.
=cut
sub import {
my @paths = (($^O ne 'MSWin32' ? ('/etc/perl') : ()), @Config{qw/
vendorarch
vendorlib
archlib
privlib
/});
# This grep MUST BE on copies of the paths to not trigger Config overload
# magic.
@paths = grep $_, @paths;
# remove duplicates
my @result;
while (my $path = shift @paths) {
if (@paths && $path eq $paths[0]) {
# ignore
}
else {
push @result, $path;
}
}
@paths = @result;
# fixup slashes for @INC on Win32
if ($^O eq 'MSWin32') {
s{\\}{/}g for @paths;
}
# expand tildes
if ($^O ne 'MSWin32') {
for my $path (@paths) {
if ($path =~ m{^~/+}) {
my $home = (getpwuid($<))[7];
$path =~ s|^~/+|${home}/|;
}
elsif (my ($user) = $path =~ /^~(\w+)/) {
my $home = (getpwnam($user))[7];
$path =~ s|^~${user}/+|${home}/|;
}
}
}
# remove any directories that don't actually exist
# this will also remove /etc/perl on non-Debian systems
@paths = grep -d, @paths;
@INC = @paths;
}
=head1 BUGS
Please report any bugs or feature requests to C<bug-vendorlib at rt.cpan.org>,
or through the web interface at
L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=vendorlib>. I will be
notified, and then you'll automatically be notified of progress on your bug as I
make changes.
=head1 SUPPORT
You can find documentation for this module with the perldoc command.
perldoc vendorlib
You can also look for information at:
=over 4
=item * RT: CPAN's request tracker
L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=vendorlib>
=item * AnnoCPAN: Annotated CPAN documentation
L<http://annocpan.org/dist/vendorlib>
=item * CPAN Ratings
L<http://cpanratings.perl.org/d/vendorlib>
=item * Search CPAN
L<http://search.cpan.org/dist/vendorlib/>
=back
=head1 ACKNOWLEDGEMENTS
mxey and jawnsy on oftc #debian-perl helped to hash out the design for this.
ribasushi reviewed the initial version and pointed out that @INC order matters.
=head1 AUTHOR
Rafael Kitover, C<< <rkitover at cpan.org> >>
=head1 LICENSE AND COPYRIGHT
Copyright 2011 Rafael Kitover.
This program is free software; you can redistribute it and/or modify it
under the terms of either: the GNU General Public License as published
by the Free Software Foundation; or the Artistic License.
See http://dev.perl.org/licenses/ for more information.
=cut
1; # End of vendorlib
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