/usr/share/perl5/Test/Valgrind/Version.pm is in libtest-valgrind-perl 1.19-1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 | package Test::Valgrind::Version;
use strict;
use warnings;
=head1 NAME
Test::Valgrind::Version - Object class for valgrind versions.
=head1 VERSION
Version 1.19
=cut
our $VERSION = '1.19';
=head1 DESCRIPTION
This class is used to parse, store and compare C<valgrind> versions.
=cut
use base 'Test::Valgrind::Carp';
use Scalar::Util ();
my $instanceof = sub {
Scalar::Util::blessed($_[0]) && $_[0]->isa($_[1]);
};
=head1 METHODS
=head2 C<new>
my $vg_version = Test::Valgrind::Version->new(
command_output => qx{valgrind --version},
);
my $vg_version = Test::Valgrind::Version->new(
string => '1.2.3',
);
Creates a new L<Test::Valgrind::Version> object representing a C<valgrind> version from one of these two sources :
=over 4
=item *
if the C<command_output> option is specified, then C<new> will try to parse it as the output of C<valgrind --version>.
=item *
otherwise the C<string> option must be passed, and its value will be parsed as a 'dotted-integer' version number.
=back
An exception is raised if the version number cannot be inferred from the supplied data.
=cut
sub new {
my ($class, %args) = @_;
my $output = $args{command_output};
my $string;
if (defined $output) {
($string) = $output =~ /^valgrind-([0-9]+(?:\.[0-9]+)*)/;
} else {
$string = $args{string};
return $string if $string->$instanceof(__PACKAGE__);
if (defined $string and $string =~ /^([0-9]+(?:\.[0-9]+)*)/) {
$string = $1;
} else {
$string = undef;
}
}
$class->_croak('Invalid argument') unless defined $string;
my @digits = map int, split /\./, $string;
my $last = $#digits;
for my $i (reverse 0 .. $#digits) {
last if $digits[$i];
--$last;
}
bless {
_digits => [ @digits[0 .. $last] ],
_last => $last,
}, $class;
}
BEGIN {
local $@;
eval "sub $_ { \$_[0]->{$_} }" for qw<_digits _last>;
die $@ if $@;
}
=head1 OVERLOADING
This class overloads numeric comparison operators (C<< <=> >>, C<< < >>, C<< <= >>, C< == >, C<< => >> and C<< > >>), as well as stringification.
=cut
sub _spaceship {
my ($left, $right, $swap) = @_;
unless ($right->$instanceof(__PACKAGE__)) {
$right = __PACKAGE__->new(string => $right);
}
($right, $left) = ($left, $right) if $swap;
my $left_digits = $left->_digits;
my $right_digits = $right->_digits;
my $last_cmp = $left->_last <=> $right->_last;
my $last = ($last_cmp < 0) ? $left->_last : $right->_last;
for my $i (0 .. $last) {
my $cmp = $left_digits->[$i] <=> $right_digits->[$i];
return $cmp if $cmp;
}
return $last_cmp;
}
sub _stringify {
my $self = shift;
my @digits = @{ $self->_digits };
push @digits, 0 until @digits >= 3;
join '.', @digits;
}
use overload (
'<=>' => \&_spaceship,
'""' => \&_stringify,
fallback => 1,
);
=head1 SEE ALSO
L<Test::Valgrind>.
=head1 AUTHOR
Vincent Pit, C<< <perl at profvince.com> >>, L<http://www.profvince.com>.
You can contact me by mail or on C<irc.perl.org> (vincent).
=head1 BUGS
Please report any bugs or feature requests to C<bug-test-valgrind at rt.cpan.org>, or through the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Test-Valgrind>.
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 Test::Valgrind::Component
=head1 COPYRIGHT & LICENSE
Copyright 2015,2016 Vincent Pit, all rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
=cut
1; # End of Test::Valgrind::Version
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