120 lines
2.8 KiB
Perl
120 lines
2.8 KiB
Perl
package DDG::Goodie::Shuffle;
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# ABSTRACT: Randomly order a given list
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use strict;
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use warnings;
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use utf8;
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use DDG::Goodie;
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use List::Util qw( shuffle pairs );
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use Data::Record;
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use Regexp::Common;
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zci answer_type => 'shuffle';
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zci is_cached => 0;
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my @phrases = map { "randomly $_" } ('shuffle', 'sort', 'order');
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triggers start => 'shuffle', @phrases;
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triggers end => (
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map { $_ !~ /e$/ ? "${_}ed" : "${_}d" } @phrases
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), 'shuffled';
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my @parens = (
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'[' => ']',
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'(' => ')',
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'{' => '}',
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);
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my $max_range = 30;
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sub parse_range {
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my $range = shift;
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$range =~ /^(?:
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(?<numeric>(?<lower>\-?\d+)\.\.(?<upper>\d+))
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|(?<lower>[[:ascii:]])\.\.(?<upper>[[:ascii:]]))$/x or return;
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my ($lower, $upper) = ("$+{lower}", "$+{upper}");
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my ($lower_int, $upper_int) =
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$+{numeric} ? ($lower, $upper) : (ord $lower, ord $upper);
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return if abs ($upper_int - $lower_int) >= $max_range;
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my @result = $lower..$upper;
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return @result;
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}
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sub is_conj {
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return shift =~ qr/^$RE{list}{and}$/i;
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}
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sub get_separator {
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my $text = shift;
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my $comma_sep = qr/\s*,\s*/io;
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return qr/(?:\s*,?\s*and\s*|$comma_sep)/io if is_conj($text);
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return $comma_sep;
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}
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sub remove_parens {
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my $text = shift;
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foreach (pairs @parens) {
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my ($opening, $closing) = map { quotemeta $_ } @$_;
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next unless $text =~ /^$RE{balanced}{-parens=>"$opening$closing"}$/;
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$text =~ s/^$opening(.+?)$closing$/$1/;
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return $text;
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}
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return $text if is_conj($text);
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return;
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}
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sub trim_whitespace {
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my $to_trim = shift;
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$to_trim =~ s/^\s+//ro =~ s/\s+$//ro;
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}
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sub parse_list {
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my $list_text = shift;
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$list_text = remove_parens($list_text)
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// return parse_range($list_text);
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if (my @items = parse_range($list_text)) {
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return @items;
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}
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my $sep = get_separator($list_text);
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my $record = Data::Record->new({
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split => $sep,
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unless => $RE{quoted},
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});
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my @items = map { trim_whitespace $_ } $record->records($list_text);
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return @items;
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}
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sub display_list {
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my @items = @_;
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return "[@{[join ', ', @items]}]";
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}
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handle remainder => sub {
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my $remainder = $_;
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return if $remainder eq '';
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my @items = parse_list($remainder) or return;
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return unless $#items;
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my @shuffled = shuffle @items;
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my $shuffled_display = display_list @shuffled;
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my $original_display = display_list @items;
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return "$original_display",
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structured_answer => {
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data => {
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title => "$shuffled_display",
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subtitle => "Shuffle: $original_display",
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# Useful for API
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items => \@shuffled,
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},
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templates => {
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group => "text",
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}
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};
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};
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1;
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