mirror of
https://github.com/pragma-/pbot.git
synced 2024-12-25 12:12:34 +01:00
143 lines
4.3 KiB
Perl
143 lines
4.3 KiB
Perl
package PBot::Utils::Indefinite;
|
|
use 5.010; use warnings;
|
|
|
|
use feature 'unicode_strings';
|
|
|
|
require Exporter;
|
|
our @ISA = qw/Exporter/;
|
|
our @EXPORT = qw/prepend_indefinite_article select_indefinite_article/;
|
|
|
|
# This module implements A/AN inflexion for nouns...
|
|
|
|
# Special cases of A/AN...
|
|
my $ORDINAL_AN = qr{\A [aefhilmnorsx] -?th \Z}ix;
|
|
my $ORDINAL_A = qr{\A [bcdgjkpqtuvwyz] -?th \Z}ix;
|
|
my $EXPLICIT_AN = qr{\A (?: euler | hour(?!i) | heir | honest | hono )}ix;
|
|
my $SINGLE_AN = qr{\A [aefhilmnorsx] \Z}ix;
|
|
my $SINGLE_A = qr{\A [bcdgjkpqtuvwyz] \Z}ix;
|
|
|
|
# This pattern matches strings of capitals (i.e. abbreviations) that
|
|
# start with a "vowel-sound" consonant followed by another consonant,
|
|
# and which are not likely to be real words
|
|
# (oh, all right then, it's just magic!)...
|
|
|
|
my $ABBREV_AN = qr{
|
|
\A
|
|
(?! FJO | [HLMNS]Y. | RY[EO] | SQU
|
|
| ( F[LR]? | [HL] | MN? | N | RH? | S[CHKLMNPTVW]? | X(YL)?) [AEIOU]
|
|
)
|
|
[FHLMNRSX][A-Z]
|
|
}xms;
|
|
|
|
# This pattern codes the beginnings of all english words begining with a
|
|
# 'Y' followed by a consonant. Any other Y-consonant prefix therefore
|
|
# implies an abbreviation...
|
|
|
|
my $INITIAL_Y_AN = qr{\A y (?: b[lor] | cl[ea] | fere | gg | p[ios] | rou | tt)}xi;
|
|
|
|
sub prepend_indefinite_article {
|
|
my ($word) = @_;
|
|
return select_indefinite_article($word) . " $word";
|
|
}
|
|
|
|
sub select_indefinite_article {
|
|
my ($word) = @_;
|
|
|
|
# Handle ordinal forms...
|
|
return "a" if $word =~ $ORDINAL_A;
|
|
return "an" if $word =~ $ORDINAL_AN;
|
|
|
|
# Handle special cases...
|
|
return "an" if $word =~ $EXPLICIT_AN;
|
|
return "an" if $word =~ $SINGLE_AN;
|
|
return "a" if $word =~ $SINGLE_A;
|
|
|
|
# Handle abbreviations...
|
|
return "an" if $word =~ $ABBREV_AN;
|
|
return "an" if $word =~ /\A [aefhilmnorsx][.-]/xi;
|
|
return "a" if $word =~ /\A [a-z][.-]/xi;
|
|
|
|
# Handle consonants
|
|
|
|
return "a" if $word =~ /\A [^aeiouy] /xi;
|
|
|
|
# Handle special vowel-forms
|
|
|
|
return "a" if $word =~ /\A e [uw] /xi;
|
|
return "a" if $word =~ /\A onc?e \b /xi;
|
|
return "a" if $word =~ /\A uni (?: [^nmd] | mo) /xi;
|
|
return "an" if $word =~ /\A ut[th] /xi;
|
|
return "a" if $word =~ /\A u [bcfhjkqrst] [aeiou] /xi;
|
|
|
|
# Handle special capitals
|
|
|
|
return "a" if $word =~ /\A U [NK] [AIEO]? /x;
|
|
|
|
# Handle vowels
|
|
|
|
return "an" if $word =~ /\A [aeiou]/xi;
|
|
|
|
# Handle Y... (before certain consonants implies (unnaturalized) "I.." sound)
|
|
return "an" if $word =~ $INITIAL_Y_AN;
|
|
|
|
# Otherwise, guess "A"
|
|
return "a";
|
|
}
|
|
|
|
|
|
1; # Magic true value required at end of module
|
|
__END__
|
|
|
|
=head1 NAME
|
|
|
|
Lingua::EN::Inflexion::Indefinite - Implements classes of LEI objects
|
|
|
|
|
|
=head1 VERSION
|
|
|
|
This document describes Lingua::EN::Inflexion::Indefinite version 0.000001
|
|
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
This module contains implementation code only.
|
|
See the documentation of Lingua::EN::Inflexion instead.
|
|
|
|
|
|
=head1 AUTHOR
|
|
|
|
Damian Conway C<< <DCONWAY@cpan.org> >>
|
|
|
|
|
|
=head1 LICENCE AND COPYRIGHT
|
|
|
|
Copyright (c) 2014, Damian Conway C<< <DCONWAY@cpan.org> >>. All rights reserved.
|
|
|
|
This module is free software; you can redistribute it and/or
|
|
modify it under the same terms as Perl itself. See L<perlartistic>.
|
|
|
|
|
|
=head1 DISCLAIMER OF WARRANTY
|
|
|
|
BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
|
|
FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
|
|
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
|
|
PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
|
|
EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
|
|
ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH
|
|
YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
|
|
NECESSARY SERVICING, REPAIR, OR CORRECTION.
|
|
|
|
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
|
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
|
|
REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE
|
|
LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL,
|
|
OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
|
|
THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
|
|
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
|
|
FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
|
|
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
|
SUCH DAMAGES.
|
|
|