/usr/share/perl/5.26.1/deprecate.pm is in perl-modules-5.26 5.26.1-6ubuntu0.3.
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 | package deprecate;
use strict;
use warnings;
our $VERSION = 0.03;
# our %Config can ignore %Config::Config, e.g. for testing
our %Config;
unless (%Config) { require Config; *Config = \%Config::Config; }
# Debian-specific change: recommend the separate Debian packages of
# deprecated modules where available
our %DEBIAN_PACKAGES = (
# None for the perl 5.22 cycle
);
# This isn't a public API. It's internal to code maintained by the perl-porters
# If you would like it to be a public API, please send a patch with
# documentation and tests. Until then, it may change without warning.
sub __loaded_from_core {
my ($package, $file, $expect_leaf) = @_;
foreach my $pair ([qw(sitearchexp archlibexp)],
[qw(sitelibexp privlibexp)]) {
my ($site, $priv) = @Config{@$pair};
if ($^O eq 'VMS') {
for my $d ($site, $priv) { $d = VMS::Filespec::unixify($d) };
}
# Just in case anyone managed to configure with trailing /s
s!/*$!!g foreach $site, $priv;
next if $site eq $priv;
if (uc("$priv/$expect_leaf") eq uc($file)) {
return 1;
}
}
return 0;
}
sub import {
my ($package, $file) = caller;
my $expect_leaf = "$package.pm";
$expect_leaf =~ s!::!/!g;
if (__loaded_from_core($package, $file, $expect_leaf)) {
my $call_depth=1;
my @caller;
while (@caller = caller $call_depth++) {
last if $caller[7] # use/require
and $caller[6] eq $expect_leaf; # the package file
}
unless (@caller) {
require Carp;
Carp::cluck(<<"EOM");
Can't find use/require $expect_leaf in caller stack
EOM
return;
}
# This is fragile, because it
# is directly poking in the internals of warnings.pm
my ($call_file, $call_line, $callers_bitmask) = @caller[1,2,9];
if (defined $callers_bitmask
&& (vec($callers_bitmask, $warnings::Offsets{deprecated}, 1)
|| vec($callers_bitmask, $warnings::Offsets{all}, 1))) {
if (my $deb = $DEBIAN_PACKAGES{$package}) {
warn <<"EOM";
$package will be removed from the Perl core distribution in the next major release. Please install the separate $deb package. It is being used at $call_file, line $call_line.
EOM
} else {
warn <<"EOM";
$package will be removed from the Perl core distribution in the next major release. Please install it from CPAN. It is being used at $call_file, line $call_line.
EOM
}
}
}
}
1;
__END__
=head1 NAME
deprecate - Perl pragma for deprecating the core version of a module
=head1 SYNOPSIS
use deprecate; # always deprecate the module in which this occurs
use if $] > 5.010, 'deprecate'; # conditionally deprecate the module
=head1 DESCRIPTION
This module is used using C<use deprecate;> (or something that calls
C<< deprecate->import() >>, for example C<use if COND, deprecate;>).
If the module that includes C<use deprecate> is located in a core library
directory, a deprecation warning is issued, encouraging the user to use
the version on CPAN. If that module is located in a site library, it is
the CPAN version, and no warning is issued.
=head2 EXPORT
None by default. The only method is C<import>, called by C<use deprecate;>.
=head1 SEE ALSO
First example to C<use deprecate;> was L<Switch>.
=head1 AUTHOR
Original version by Nicholas Clark
=head1 COPYRIGHT AND LICENSE
Copyright (C) 2009, 2011
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.10.0 or,
at your option, any later version of Perl 5 you may have available.
=cut
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