/usr/share/perl5/BSON/Regex.pm is in libbson-perl 1.4.0-1.
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 | use 5.010001;
use strict;
use warnings;
package BSON::Regex;
# ABSTRACT: BSON type wrapper for regular expressions
use version;
our $VERSION = 'v1.4.0';
use Carp ();
use Moo;
#pod =attr pattern
#pod
#pod A B<string> containing a PCRE regular expression pattern (not a C<qr> object
#pod and without slashes). Default is the empty string.
#pod
#pod =cut
#pod =attr flags
#pod
#pod A string with regular expression flags. Flags will be sorted and
#pod duplicates will be removed during object construction. Supported flags
#pod include C<imxlsu>. Invalid flags will cause an exception.
#pod Default is the empty string.
#pod
#pod =cut
has [qw/pattern flags/] => (
is => 'ro'
);
use namespace::clean -except => 'meta';
my %ALLOWED_FLAGS = map { $_ => 1 } qw/i m x l s u/;
sub BUILD {
my $self = shift;
$self->{pattern} = '' unless defined($self->{pattern});
$self->{flags} = '' unless defined($self->{flags});
if ( length $self->{flags} ) {
my %seen;
my @flags = grep { !$seen{$_}++ } split '', $self->{flags};
foreach my $f (@flags) {
Carp::croak("Regex flag $f is not supported")
if not exists $ALLOWED_FLAGS{$f};
}
# sort flags
$self->{flags} = join '', sort @flags;
}
}
#pod =method try_compile
#pod
#pod my $qr = $regexp->try_compile;
#pod
#pod Tries to compile the C<pattern> and C<flags> into a reference to a regular
#pod expression. If the pattern or flags can't be compiled, a
#pod exception will be thrown.
#pod
#pod B<SECURITY NOTE>: Executing a regular expression can evaluate arbitrary
#pod code if the L<re> 'eval' pragma is in force. You are strongly advised
#pod to read L<re> and never to use untrusted input with C<try_compile>.
#pod
#pod =cut
sub try_compile {
my ($self) = @_;
my ( $p, $f ) = @{$self}{qw/pattern flags/};
my $re = length($f) ? eval { qr/(?$f:$p)/ } : eval { qr/$p/ };
Carp::croak("error compiling regex 'qr/$p/$f': $@")
if $@;
return $re;
}
#pod =method TO_JSON
#pod
#pod If the C<BSON_EXTJSON> option is true, returns a hashref compatible with
#pod MongoDB's L<extended JSON|https://docs.mongodb.org/manual/reference/mongodb-extended-json/>
#pod format, which represents it as a document as follows:
#pod
#pod {"$regex" : "<pattern>", "$options" : "<flags>"}
#pod
#pod If the C<BSON_EXTJSON> option is false, an error is thrown, as this value
#pod can't otherwise be represented in JSON.
#pod
#pod =cut
sub TO_JSON {
if ( $ENV{BSON_EXTJSON} ) {
return { '$regex' => $_[0]->{pattern}, '$options' => $_[0]->{flags} };
}
Carp::croak( "The value '$_[0]' is illegal in JSON" );
}
1;
=pod
=encoding UTF-8
=head1 NAME
BSON::Regex - BSON type wrapper for regular expressions
=head1 VERSION
version v1.4.0
=head1 SYNOPSIS
use BSON::Types ':all';
$regex = bson_regex( $pattern );
$regex = bson_regex( $pattern, $flags );
=head1 DESCRIPTION
This module provides a BSON type wrapper for a PCRE regular expression and
optional flags.
=head1 ATTRIBUTES
=head2 pattern
A B<string> containing a PCRE regular expression pattern (not a C<qr> object
and without slashes). Default is the empty string.
=head2 flags
A string with regular expression flags. Flags will be sorted and
duplicates will be removed during object construction. Supported flags
include C<imxlsu>. Invalid flags will cause an exception.
Default is the empty string.
=head1 METHODS
=head2 try_compile
my $qr = $regexp->try_compile;
Tries to compile the C<pattern> and C<flags> into a reference to a regular
expression. If the pattern or flags can't be compiled, a
exception will be thrown.
B<SECURITY NOTE>: Executing a regular expression can evaluate arbitrary
code if the L<re> 'eval' pragma is in force. You are strongly advised
to read L<re> and never to use untrusted input with C<try_compile>.
=head2 TO_JSON
If the C<BSON_EXTJSON> option is true, returns a hashref compatible with
MongoDB's L<extended JSON|https://docs.mongodb.org/manual/reference/mongodb-extended-json/>
format, which represents it as a document as follows:
{"$regex" : "<pattern>", "$options" : "<flags>"}
If the C<BSON_EXTJSON> option is false, an error is thrown, as this value
can't otherwise be represented in JSON.
=for Pod::Coverage BUILD
=head1 AUTHORS
=over 4
=item *
David Golden <david@mongodb.com>
=item *
Stefan G. <minimalist@lavabit.com>
=back
=head1 COPYRIGHT AND LICENSE
This software is Copyright (c) 2017 by Stefan G. and MongoDB, Inc.
This is free software, licensed under:
The Apache License, Version 2.0, January 2004
=cut
__END__
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