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### DNA japh

by chargrill (Parson)
 on Nov 20, 2006 at 02:02 UTC ( #584996=obfuscated: print w/ replies, xml ) Need Help??

'Drew' a little more inspiration from liverpole's Cyclical japh.

```#!/usr/bin/perl

\$_=                                              q#sub'C{25+
20*c  AAAAAAAAAAAAAAAAAAAAAA  TTTTTTTTTTTTTTTTTTT   os(pop()*
2/pop)                                                 }for(0
..1638){\$                                                T[\$_
][C(14,\$_)]                                               =\$
T[\$_][C(14,\$_ CCCCCCCCCCCCC  GGGGGGGGGGGGGGGGGGGGGGG  +21)
]="\e[1mo\e[0m                                   "}\$C=\$
T=\$l=\$f=0;sub'g{                             (\$d,\$s)=
@_;my\$l=(length\$s                     )+1;\$p='-'x
(int(\$d/\$l)-1);my\$TTTTT  AAAAAAn;for(split/
/,\$s){\$n.=\$p.\$_}\$n.    =\$p;\$n=~s/-([\
w,])-/G\$1G/g;\$n=\$l>\$d?substr(
\$n,int((\$l-\$d)/2),\$d)
:\$n;while(\$d>=length\$
n){(\$n='-'.\$n)..(\$n=\$n.'-')}
split//,\$n}sub'T{       print"\e[2J\e
[0;1f\n"}sub'A{\$                g=0;@g=();m
ap{push@g,\${g}if                       \$_;\$g++}@
{pop@_};(\$g[1]   AAAAAAAAAAAAA  TTTTTTTTTTTTT-\$g[0])
}T;forG\$A(@T                                      ){\$c=
qw(tsuJG-G-G                                           -Gr
ehtonaG-G-                                                G-
GlrePG-G  CCCCCCCCCCCCCCCCCCCC  GGGGGGGGGGGGGGGGGGGGGGGG -G-G
,rekc                                                   ahG-G
-G-                                                   )[\$C%20
];                                                 \$T=0;@A=g
(A  TTTTTTTTTTTTTTTTTTTTT  AAAAAAAAAAAAAAAAAAA  (\$A),\$c);fo
r(@{                                        \$A}){print\$_?
do{\$T=                                   \$T&&\${l}ne\$_?
0:1;\$l=\$_                           }&&\$_:\$T?!(\$C%4
)?do{\$^=pop GGGGGGG  CCCCCCCC @A;'^'eq\${^}?'G'
:\$^}||'-':'            G':'G'}print"\n";
\$C++;if(!(\$C%20)){select\$y,\$y,\$
y,.08;T}}#,s*[ATCG]{2,}**g
,s,\s+,,g,s,G, ,g,
eval \$_ && chargrill #

There are two ways your eyes can interpret what you're seeing when you run this - it will either appear to be scrolling, or rotating. I've tried to provide enough visual cues to help you see the latter. If, try as you might you're still only able to see it as scrolling, try to just concentrate on the first line.

Windows users might need to (save the code above as "dna.pl" and) use the following invocation:

```\$ perl -MWin32::Console::ANSI dna.pl

Most of the obfuscations of this nature (\$somevar=q"compactedOrWhitespacedCode";s/\s+//;eval;) can generally be picked apart with something like:

```\$ sed 's/eval/print/' obfu.pl | perl | perl -MO=Deparse

I was a little surprised to find out I couldn't quite do that with this one due to a last minute formatting change (namely, that I didn't have enough code to complete the last line in the picture!). How to modify the above command line to see the meat of the code is left as an exercise for the reader.

Update: Hah, I noticed my unintentional pun in the first sentence :-D

--chargrill
```s**lil*;  \$*=join'',sort split q**;  s;.*;grr; &&s+(.(.)).+\$2\$1+; \$; =
qq-\$_-;s,.*,ahc,;\$,.=chop for split q,,,reverse;print for(\$,,\$;,\$*,\$/)

Comment on DNA japh
Re: DNA japh
by liverpole (Monsignor) on Nov 20, 2006 at 14:42 UTC

Did I first pick up that trick from you? I think perhaps I did. However, it is an exceedingly helpful trick to figure out why ...

--chargrill
```s**lil*;  \$*=join'',sort split q**;  s;.*;grr; &&s+(.(.)).+\$2\$1+; \$; =
qq-\$_-;s,.*,ahc,;\$,.=chop for split q,,,reverse;print for(\$,,\$;,\$*,\$/)
Yes, I first told you about that trick with regard to this Japh.

s''(q.S:\$/9=(T1';s;(..)(..);\$..=substr+crypt(\$1,\$2),2,3;eg;print\$..\$/

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