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package Twister::Rotate; use Twister; require Exporter; our @ISA = qw(Twister); sub defaults { return {rotate => 13}; } sub twist { my ($self, $string) = @_; $string =~ s{([a-z])}{ chr(ord('a') + (ord($1) - ord('a') + $self->{rotate}) % 26) }eg; $string =~ s{([A-Z])}{ chr(ord('A') + (ord($1) - ord('A') + $self->{rotate}) % 26) }eg; return $string; } Twister::Rotate->register("Rotate", sub { Twister::Rotate->new(@_) }); 1; |
Copyright © 1996 - 2003 Andreas Borchert, in HTML konvertiert am 01.10.2003 |