This file is indexed.

/usr/share/perl5/CPAN/DistnameInfo.pm is in libcpan-distnameinfo-perl 0.12-1.

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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
package CPAN::DistnameInfo;

$VERSION = "0.12";
use strict;

sub distname_info {
  my $file = shift or return;

  my ($dist, $version) = $file =~ /^
    ((?:[-+.]*(?:[A-Za-z0-9]+|(?<=\D)_|_(?=\D))*
     (?:
	[A-Za-z](?=[^A-Za-z]|$)
	|
	\d(?=-)
     )(?<![._-][vV])
    )+)(.*)
  $/xs or return ($file,undef,undef);

  if ($dist =~ /-undef\z/ and ! length $version) {
    $dist =~ s/-undef\z//;
  }

  # Remove potential -withoutworldwriteables suffix
  $version =~ s/-withoutworldwriteables$//;

  if ($version =~ /^(-[Vv].*)-(\d.*)/) {
   
    # Catch names like Unicode-Collate-Standard-V3_1_1-0.1
    # where the V3_1_1 is part of the distname
    $dist .= $1;
    $version = $2;
  }

  if ($version =~ /(.+_.*)-(\d.*)/) {
      # Catch names like Task-Deprecations5_14-1.00.tar.gz where the 5_14 is
      # part of the distname. However, names like libao-perl_0.03-1.tar.gz
      # should still have 0.03-1 as their version.
      $dist .= $1;
      $version = $2;
  }

  # Normalize the Dist.pm-1.23 convention which CGI.pm and
  # a few others use.
  $dist =~ s{\.pm$}{};

  $version = $1
    if !length $version and $dist =~ s/-(\d+\w)$//;

  $version = $1 . $version
    if $version =~ /^\d+$/ and $dist =~ s/-(\w+)$//;

  if ($version =~ /\d\.\d/) {
    $version =~ s/^[-_.]+//;
  }
  else {
    $version =~ s/^[-_]+//;
  }

  my $dev;
  if (length $version) {
    if ($file =~ /^perl-?\d+\.(\d+)(?:\D(\d+))?(-(?:TRIAL|RC)\d+)?$/) {
      $dev = 1 if (($1 > 6 and $1 & 1) or ($2 and $2 >= 50)) or $3;
    }
    elsif ($version =~ /\d\D\d+_\d/ or $version =~ /-TRIAL/) {
      $dev = 1;
    }
  }
  else {
    $version = undef;
  }

  ($dist, $version, $dev);
}

sub new {
  my $class = shift;
  my $distfile = shift;

  $distfile =~ s,//+,/,g;

  my %info = ( pathname => $distfile );

  ($info{filename} = $distfile) =~ s,^(((.*?/)?authors/)?id/)?([A-Z])/(\4[A-Z])/(\5[-A-Z0-9]*)/,,
    and $info{cpanid} = $6;

  if ($distfile =~ m,([^/]+)\.(tar\.(?:g?z|bz2)|zip|tgz)$,i) { # support more ?
    $info{distvname} = $1;
    $info{extension} = $2;
  }

  @info{qw(dist version beta)} = distname_info($info{distvname});
  $info{maturity} = delete $info{beta} ? 'developer' : 'released';

  return bless \%info, $class;
}

sub dist      { shift->{dist} }
sub version   { shift->{version} }
sub maturity  { shift->{maturity} }
sub filename  { shift->{filename} }
sub cpanid    { shift->{cpanid} }
sub distvname { shift->{distvname} }
sub extension { shift->{extension} }
sub pathname  { shift->{pathname} }

sub properties { %{ $_[0] } }

1;

__END__

=head1 NAME

CPAN::DistnameInfo - Extract distribution name and version from a distribution filename

=head1 SYNOPSIS

  my $pathname = "authors/id/G/GB/GBARR/CPAN-DistnameInfo-0.02.tar.gz";

  my $d = CPAN::DistnameInfo->new($pathname);

  my $dist      = $d->dist;      # "CPAN-DistnameInfo"
  my $version   = $d->version;   # "0.02"
  my $maturity  = $d->maturity;  # "released"
  my $filename  = $d->filename;  # "CPAN-DistnameInfo-0.02.tar.gz"
  my $cpanid    = $d->cpanid;    # "GBARR"
  my $distvname = $d->distvname; # "CPAN-DistnameInfo-0.02"
  my $extension = $d->extension; # "tar.gz"
  my $pathname  = $d->pathname;  # "authors/id/G/GB/GBARR/..."

  my %prop = $d->properties;

=head1 DESCRIPTION

Many online services that are centered around CPAN attempt to
associate multiple uploads by extracting a distribution name from
the filename of the upload. For most distributions this is easy as
they have used ExtUtils::MakeMaker or Module::Build to create the
distribution, which results in a uniform name. But sadly not all
uploads are created in this way.

C<CPAN::DistnameInfo> uses heuristics that have been learnt by
L<http://search.cpan.org/> to extract the distribution name and
version from filenames and also report if the version is to be
treated as a developer release

The constructor takes a single pathname, returning an object with the following methods

=over

=item cpanid

If the path given looked like a CPAN authors directory path, then this will be the
the CPAN id of the author.

=item dist

The name of the distribution

=item distvname

The file name with any suffix and leading directory names removed

=item filename

If the path given looked like a CPAN authors directory path, then this will be the
path to the file relative to the detected CPAN author directory. Otherwise it is the path
that was passed in.

=item maturity

The maturity of the distribution. This will be either C<released> or C<developer>

=item extension

The extension of the distribution, often used to denote the archive type (e.g. 'tar.gz')

=item pathname

The pathname that was passed to the constructor when creating the object.

=item properties

This will return a list of key-value pairs, suitable for assigning to a hash,
for the known properties.

=item version

The extracted version

=back

=head1 AUTHOR

Graham Barr <gbarr@pobox.com>

=head1 COPYRIGHT 

Copyright (c) 2003 Graham Barr. All rights reserved. This program is
free software; you can redistribute it and/or modify it under the same
terms as Perl itself.

=cut