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## Domain Registry Interface, Language Tag parsing (RFC5646) |
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## |
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## Copyright (c) 2015,2016 Patrick Mevzek . All rights reserved. |
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## |
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## This file is part of Net::DRI |
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## |
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## Net::DRI is free software; you can redistribute it and/or modify |
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## it under the terms of the GNU General Public License as published by |
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## the Free Software Foundation; either version 2 of the License, or |
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## (at your option) any later version. |
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## |
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## See the LICENSE file that comes with this distribution for more details. |
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#################################################################################################### |
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package Net::DRI::Data::LanguageTag; |
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70
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use strict; |
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1802
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use warnings; |
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1536
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use feature 'state'; |
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5214
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use Sub::Name; |
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12480
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0
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use overload '""' => sub { my ($self, @rest) = @_; return $self->as_string(); }, |
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'@{}' => sub { my ($self, @rest) = @_; return [ $self->subtags() ]; }, |
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'.' => sub { my ($self, $toadd, $swap) = @_; mydie('Left adding subtags is not implemented') if $swap; return $self->add_subtag($toadd); }, |
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'cmp' => sub { my ($self, $other, $swap) = @_; my $r = "${self}" cmp "${other}"; return $swap ? -$r : $r; }, ## should we compare subtags one by one? |
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'fallback' => undef; |
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my $digit=qr/[0-9]/; |
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my $alpha=qr/[A-Za-z]/; |
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my $alphanum=qr/${digit}|${alpha}/; |
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my $irregular=qr/en-GB-oed|i-ami|i-bnn|i-default|i-enochian|i-hak|i-klingon|i-lux|i-mingo|i-navajo|i-pwn|i-tao|i-tay|i-tsu|sgn-BE-FR|sgn-BE-NL|sgn-CH-DE/i; |
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my $regular=qr/art-lojban|cel-gaulish|no-bok|no-nyn|zh-guoyu|zh-hakka|zh-min|zh-min-nan|zh-xiang/i; |
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my $grandfathered=qr/${irregular}|${regular}/; |
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my $privateuse=qr/x(?:-${alphanum}{1,8})+/i; ## TODO check if lower bound is indeed 1 ! is this like an extension, and hence need to be checked |
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my $extlang=qr/${alpha}{3}(?:-${alpha}{3}){0,2}/; |
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my $language=qr/(?:${alpha}{2,3}(-${extlang})?)|${alpha}{4}|${alpha}{5,8}/; |
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my $script=qr/${alpha}{4}/; |
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my $region=qr/${alpha}{2}|${digit}{3}/; |
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my $variant=qr/${alphanum}{5,8}|${digit}${alphanum}{3}/; |
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my $singleton=qr/${digit}|[A-W]|[Y-Z]|[a-w]|[y-z]/; |
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my $extension=qr/${singleton}(?:-${alphanum}{2,8})+/; |
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my $langtag=qr/(?${language})(? |