kivitendo/modules/fallback/Regexp/IPv6.pm @ 92dfab6d
| c2f401aa | Sven Schöling | package Regexp::IPv6;
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our $VERSION = '0.03';
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use strict;
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use warnings;
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require Exporter;
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our @ISA = qw(Exporter);
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our @EXPORT_OK = qw($IPv6_re);
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my $IPv4 = "((25[0-5]|2[0-4][0-9]|[0-1]?[0-9]{1,2})[.](25[0-5]|2[0-4][0-9]|[0-1]?[0-9]{1,2})[.](25[0-5]|2[0-4][0-9]|[0-1]?[0-9]{1,2})[.](25[0-5]|2[0-4][0-9]|[0-1]?[0-9]{1,2}))";
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my $G = "[0-9a-fA-F]{1,4}";
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my @tail = ( ":",
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"(:($G)?|$IPv4)",
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":($IPv4|$G(:$G)?|)",
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"(:$IPv4|:$G(:$IPv4|(:$G){0,2})|:)",
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"((:$G){0,2}(:$IPv4|(:$G){1,2})|:)",
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"((:$G){0,3}(:$IPv4|(:$G){1,2})|:)",
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"((:$G){0,4}(:$IPv4|(:$G){1,2})|:)" );
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our $IPv6_re = $G;
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$IPv6_re = "$G:($IPv6_re|$_)" for @tail;
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$IPv6_re = qq/:(:$G){0,5}((:$G){1,2}|:$IPv4)|$IPv6_re/;
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$IPv6_re =~ s/\(/(?:/g;
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$IPv6_re = qr/$IPv6_re/;
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1;
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__END__
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=head1 NAME
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Regexp::IPv6 - Regular expression for IPv6 addresses
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=head1 SYNOPSIS
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use Regexp::IPv6 qw($IPv6_re);
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$address =~ /^$IPv6_re$/ and print "IPv6 address\n";
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=head1 DESCRIPTION
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This module exports the $IPv6_re regular expression that matches any
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valid IPv6 address as described in "RFC 2373 - 2.2 Text Representation
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of Addresses" but C<::>. Any string not compliant with such RFC will
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be rejected.
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To match full strings use C</^$IPv6_re$/>.
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=head1 COPYRIGHT AND LICENSE
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Copyright (C) 2009, 2010 by Salvador FandiE<ntilde>o
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(sfandino@yahoo.com)
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This library is free software; you can redistribute it and/or modify
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it under the same terms as Perl itself, either Perl version 5.10.0 or,
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at your option, any later version of Perl 5 you may have available.
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Additionally, you are allowed to use the regexp generated by the
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module in any way you want, without any restriction. For instance, you
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are allowed to copy it verbating in your program.
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=cut
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