/usr/lib/x86_64-linux-gnu/perl5/5.22/DateTime/PPExtra.pm is in libdatetime-perl 2:1.21-1build1.
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 | package DateTime::PPExtra;
use strict;
use warnings;
our $VERSION = '1.21';
use DateTime::LeapSecond;
sub _normalize_tai_seconds {
return
if
grep { $_ == DateTime::INFINITY() || $_ == DateTime::NEG_INFINITY() }
@_[ 1, 2 ];
# This must be after checking for infinity, because it breaks in
# presence of use integer !
use integer;
my $adj;
if ( $_[2] < 0 ) {
$adj = ( $_[2] - 86399 ) / 86400;
}
else {
$adj = $_[2] / 86400;
}
$_[1] += $adj;
$_[2] -= $adj * 86400;
}
sub _normalize_leap_seconds {
# args: 0 => days, 1 => seconds
my $delta_days;
use integer;
# rough adjust - can adjust many days
if ( $_[2] < 0 ) {
$delta_days = ( $_[2] - 86399 ) / 86400;
}
else {
$delta_days = $_[2] / 86400;
}
my $new_day = $_[1] + $delta_days;
my $delta_seconds
= ( 86400 * $delta_days )
+ DateTime::LeapSecond::leap_seconds($new_day)
- DateTime::LeapSecond::leap_seconds( $_[1] );
$_[2] -= $delta_seconds;
$_[1] = $new_day;
# fine adjust - up to 1 day
my $day_length = DateTime::LeapSecond::day_length($new_day);
if ( $_[2] >= $day_length ) {
$_[2] -= $day_length;
$_[1]++;
}
elsif ( $_[2] < 0 ) {
$day_length = DateTime::LeapSecond::day_length( $new_day - 1 );
$_[2] += $day_length;
$_[1]--;
}
}
my @subs = qw(
_normalize_tai_seconds
_normalize_leap_seconds
);
for my $sub (@subs) {
no strict 'refs';
*{ 'DateTime::' . $sub } = __PACKAGE__->can($sub);
}
1;
|