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use strict; use warnings; use List::Util qw(shuffle); sub encode { my ($text, @alphabet) = @_; local $" = ''; eval "\$text =~ tr/a-z/@alphabet/"; $_ = uc for @alphabet; eval "\$text =~ tr/A-Z/@alphabet/"; $text } sub decode { my ($text, @alphabet) = @_; local $" = ''; eval "\$text =~ tr/@alphabet/a-z/"; $_ = uc for @alphabet; eval "\$text =~ tr/@alphabet/A-Z/"; $text } sub no_lt_ws { local $_ = shift; s/^\s+//; s/\s+$//; $_ } my $opt = shift; my $func; my @alphabet; if ($opt eq '-e') { $func = \&encode; @alphabet = shuffle('a'..'z'); } elsif ($opt eq '-d') { $func = \&decode; local $| = 1; print "Alphabet: "; @alphabet = split /[^a-z]+/i, no_lt_ws(scalar <STDIN>); } else { die "Usage: $0 <-e(ncode)/-d(ecode)> [filenames]"; } print "Alphabet: @alphabet\n"; while (<>) { print $func->($_, @alphabet); }

In reply to Yet Another Cryptogram Script by missingthepoint

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