This file is indexed.

/usr/share/perl5/Devscripts/Set.pm is in devscripts 2.16.2ubuntu3.

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
# Copyright Bill Allombert <ballombe@debian.org> 2001.
# Modifications copyright 2002 Julian Gilbey <jdg@debian.org>

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.

package Devscripts::Set;

use strict;

BEGIN{
  use Exporter   ();
  use vars       qw(@EXPORT @ISA %EXPORT_TAGS);
  @EXPORT=qw(SetMinus SetInter SetUnion);
  @ISA=qw(Exporter);
  %EXPORT_TAGS=();
}

# Several routines to work with arrays whose elements are unique
# (here called sets)

=head1 NAME

Devscripts::Set - Functions for handling sets.

=head1 SYNOPSIS

use Devscripts::Set;

@set=ListToSet(@list);

@setdiff=SetMinus(\@set1,\@set2);

@setinter=SetInter(\@set1,\@set2);

@setunion=SetUnion(\@set1,\@set2);

=head1 DESCRIPTION

ListToSet: Make a set (array with duplicates removed) from a list of
items given by an array.

SetMinus, SetInter, SetUnion: Compute the set theoretic difference,
intersection, union of two sets given as arrays.

=cut

# Transforms a list to a set, removing duplicates
# input:  list
# output: set

sub ListToSet (@)
{
    my %items;

    grep $items{$_}++, @_;

    return keys %items;
}


# Compute the set-theoretic difference of two sets.
# input: ref to Set 1, ref to Set 2
# output: set

sub SetMinus ($$)
{
    my ($set1,$set2)=@_;
    my %items;

    grep $items{$_}++, @$set1;
    grep $items{$_}--, @$set2;

    return grep $items{$_}>0, keys %items;
}


# Compute the set-theoretic intersection of two sets.
# input: ref to Set 1, ref to Set 2
# output: set

sub SetInter ($$)
{
    my ($set1,$set2)=@_;
    my %items;

    grep $items{$_}++, @$set1;
    grep $items{$_}++, @$set2;

    return grep $items{$_}==2, keys %items;
}


#Compute the set-theoretic union of two sets.
#input: ref to Set 1, ref to Set 2
#output: set

sub SetUnion ($$)
{
    my ($set1,$set2)=@_;
    my %items;

    grep $items{$_}++, @$set1;
    grep $items{$_}++, @$set2;

    return grep $items{$_}>0, keys %items;
}

1;

=head1 AUTHOR

Bill Allombert <ballombe@debian.org>

=head1 COPYING

Copyright 2001 Bill Allombert <ballombe@debian.org>
Modifications Copyright 2002 Julian Gilbey <jdg@debian.org>
dpkg-depcheck is free software, covered by the GNU General Public License, and
you are welcome to change it and/or distribute copies of it under
certain conditions.  There is absolutely no warranty for dpkg-depcheck.

=cut