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|
#!perl
package Games::Word::Wordlist;
use strict;
use warnings;
use Games::Word qw/all_permutations is_subpermutation/;
use List::MoreUtils qw/uniq/;
sub new {
my $class = shift;
my $word_list = shift;
my $self = {
cache => 1,
@_,
file => $word_list,
word_list => [],
word_hash => {},
};
if (ref($word_list) eq 'ARRAY') {
$self->{cache} = 1;
$self->{file} = '';
$self->{word_list} = $word_list;
$self->{word_hash}{$_} = 1 for @$word_list;
}
else {
die "Can't read word list: $word_list" unless -r $word_list;
die "Empty word list: $word_list" unless -s $word_list;
if ($self->{cache}) {
open my $fh, $word_list or die "Opening $word_list failed";
for (<$fh>) {
chomp;
$self->{word_hash}{$_} = 1;
}
$self->{word_list} = [keys %{$self->{word_hash}}];
}
}
bless $self, $class;
return $self;
}
sub add_words {
my $self = shift;
my $word_list = shift;
die "Can't add words to a non-cached word list"
unless $self->{cache};
if (ref($word_list) eq 'ARRAY') {
$self->{word_hash}{$_} = 1 for @$word_list;
}
else {
open my $fh, '<', $word_list or die "Opening $word_list failed";
$self->{word_hash}{$_} = 1 for <$fh>;
}
$self->{word_list} = [keys %{$self->{word_hash}}];
}
sub remove_words {
my $self = shift;
delete $self->{word_hash}{$_} for (@_);
$self->{word_list} = [keys %{$self->{word_hash}}];
}
sub words {
my $self = shift;
return @{$self->{word_list}} if $self->{cache};
open my $fh, '<', $self->{file};
for (<$fh>) {}
return $.;
}
sub _random_word_cache {
my $self = shift;
my $length = shift;
my @word_list;
if (defined $length) {
@word_list = $self->words_like(qr/^\w{$length}$/);
die "No words in word list" unless @word_list;
}
else {
@word_list = @{$self->{word_list}};
die "No words of length $length in word list" unless @word_list;
}
return $word_list[int rand @word_list];
}
sub _random_word_nocache {
my $self = shift;
my $length = shift;
open my $fh, '<', $self->{file} or die "Opening $self->{file} failed";
die "No words in word list" unless -s $self->{file};
my $word;
my $lineno = 0;
while (<$fh>) {
next unless !defined $length || /^\w{$length}$/;
$lineno++;
$word = $_ if int(rand $lineno) == 0;
}
die "No words of length $length in word list" unless defined $word;
chomp $word;
return $word;
}
sub random_word {
my $self = shift;
return $self->_random_word_cache(@_) if $self->{cache};
return $self->_random_word_nocache(@_);
}
sub _is_word_cache {
my $self = shift;
my $word = shift;
return $self->{word_hash}{$word};
}
sub _is_word_nocache {
my $self = shift;
my $word = shift;
open my $fh, '<', $self->{file}
or die "Couldn't open word list: $self->{file}";
while (<$fh>) {
chomp;
return 1 if $_ eq $word;
}
return 0;
}
sub is_word {
my $self = shift;
return $self->_is_word_cache(@_) if $self->{cache};
return $self->_is_word_nocache(@_);
}
sub _each_word_cache {
my $self = shift;
my $code = shift;
&$code($_) for @{$self->{word_list}};
}
sub _each_word_nocache {
my $self = shift;
my $code = shift;
open my $fh, '<', $self->{file}
or die "Couldn't open word list: $self->{file}";
while (<$fh>) {
chomp;
&$code($_);
}
}
sub _each_word {
my $self = shift;
return $self->_each_word_cache(@_) if $self->{cache};
return $self->_each_word_nocache(@_);
}
sub anagrams {
my $self = shift;
my $word = shift;
return uniq grep { $self->is_word($_) } all_permutations($word);
}
sub words_like {
my $self = shift;
my $re = shift;
my @words = ();
$self->_each_word(sub { push @words, $_[0] if $_[0] =~ $re });
return @words;
}
sub subwords_of {
my $self = shift;
my $string = shift;
my @words = ();
$self->_each_word(sub { push @words, $_[0]
if is_subpermutation($_[0], $string)});
return @words;
}
=head1 NAME
Games::Word::Wordlist - ???
=head1 VERSION
Version 0.01 released ???
=cut
our $VERSION = '0.01';
=head1 SYNOPSIS
use Games::Word::Wordlist;
do_stuff();
=head1 DESCRIPTION
=head1 SEE ALSO
L<Foo::Bar>
=head1 AUTHOR
Jesse Luehrs, C<< <jluehrs2 at uiuc.edu> >>
=head1 BUGS
No known bugs.
Please report any bugs through RT: email
C<bug-games-word at rt.cpan.org>, or browse
L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Games-Word>.
=head1 SUPPORT
You can find this documentation for this module with the perldoc command.
perldoc Games::Word
You can also look for information at:
=over 4
=item * AnnoCPAN: Annotated CPAN documentation
L<http://annocpan.org/dist/Games-Word>
=item * CPAN Ratings
L<http://cpanratings.perl.org/d/Games-Word>
=item * RT: CPAN's request tracker
L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Games-Word>
=item * Search CPAN
L<http://search.cpan.org/dist/Games-Word>
=back
=head1 COPYRIGHT AND LICENSE
Copyright 2008 Jesse Luehrs.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
=cut
1;
|
