my $pages = $options->{pages } || 1 + int $#$self / $pagesize;
$pagesize = $pages >= $#$self ? 1 : @$self / $pages;
- my $offset = $pagesize + .5;
my $lookbehind = -$context;
my $lookahead = $context;
+
my @links = ('');
- while ($offset < @$self) {
+ for (my $offset = $pagesize + .5; $offset < @$self; $offset += $pagesize) {
my $link = substr $self->[$offset], 0, $length;
if ($context) {
my $penalty = 0;
$lookahead = $context - $penalty;
}
- push @links, $link;
- $offset += $pagesize;
+ push @links, $link unless $links[-1] eq $link;
}
- use List::MoreUtils 'uniq';
- @links = uniq @links;
+ # add range end to each link
for my $i (0 .. $#links - 1) {
- my ($link, $lastchar) = $links[$i + 1] =~ /(.*)(.)/;
- $link .= $lastchar le 'a' ? '.' : chr( ord($lastchar) - 1 );
- next if $link eq $links[$i] and $i;
- $links[$i] .= '-'.$link;
+ # end at start of next value with the last character decremented
+ my $next = $links[$i + 1];
+ $next =~ s{(.)$}{ $1 le 'a' ? '.' : chr( ord($1) - 1 ) }e;
+ # amend range if it's ahead
+ $links[$i] .= '-'.$next unless $next eq $links[$i];
}
+ # final value takes the rest
$links[-1] .= '-';
return \@links;