Acme-EyeDrops
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lib/Acme/EyeDrops.pm view on Meta::CPAN
print+_,", $;!
Take one down, pass it around,
",_,"!
"while++$=
BURP
chop($ninety_nine); $ninety_nine =~ s/\nprint/print/;
print sightly( { Regex => 1,
Compact => 1,
ShapeString => hjoin_shapes(2,
(get_eye_string('bottle2'))x6),
SourceString => $ninety_nine } );
producing:
''=~( '(?{' .('`' |'%') .('[' ^'-')
.('`' |'!') .('`' |',') .'"'. '\\$'
.'==' .('[' ^'+') .('`' |'/') .('['
^'+') .'||' .(';' &'=') .(';' &'=')
.';-' .'-'. '\\$' .'=;' .('[' ^'(')
.('[' ^'.') .('`' |'"') .('!' ^'+')
.'_\\{' .'(\\$' .';=('. '\\$=|' ."\|".( '`'^'.'
).(('`')| '/').').' .'\\"'.+( '{'^'['). ('`'|'"') .('`'|'/'
).('['^'/') .('['^'/'). ('`'|',').( '`'|('%')). '\\".\\"'.( '['^('(')).
'\\"'.('['^ '#').'!!--' .'\\$=.\\"' .('{'^'['). ('`'|'/').( '`'|"\&").(
'{'^"\[").( '`'|"\"").( '`'|"\%").( '`'|"\%").( '['^(')')). '\\").\\"'.
('{'^'[').( '`'|"\/").( '`'|"\.").( '{'^"\[").( '['^"\/").( '`'|"\(").(
'`'|"\%").( '{'^"\[").( '['^"\,").( '`'|"\!").( '`'|"\,").( '`'|(',')).
'\\"\\}'.+( '['^"\+").( '['^"\)").( '`'|"\)").( '`'|"\.").( '['^('/')).
'+_,\\",'.( '{'^('[')). ('\\$;!').( '!'^"\+").( '{'^"\/").( '`'|"\!").(
'`'|"\+").( '`'|"\%").( '{'^"\[").( '`'|"\/").( '`'|"\.").( '`'|"\%").(
'{'^"\[").( '`'|"\$").( '`'|"\/").( '['^"\,").( '`'|('.')). ','.(('{')^
'[').("\["^ '+').("\`"| '!').("\["^ '(').("\["^ '(').("\{"^ '[').("\`"|
')').("\["^ '/').("\{"^ '[').("\`"| '!').("\["^ ')').("\`"| '/').("\["^
'.').("\`"| '.').("\`"| '$')."\,".( '!'^('+')). '\\",_,\\"' .'!'.("\!"^
'+').("\!"^ '+').'\\"'. ('['^',').( '`'|"\(").( '`'|"\)").( '`'|"\,").(
'`'|('%')). '++\\$="})' );$:=('.')^ '~';$~='@'| '(';$^=')'^ '[';$/='`';
A larger single beer bottle shape can be produced with:
print sightly( { Regex => 1,
Compact => 1,
Shape => 'bottle',
SourceString => $ninety_nine } );
while the canonical solution, shaped like 99 bottles of beer, can be
generated with:
print sightly( { Regex => 1,
ShapeString => join("\n", (hjoin_shapes(3,
(get_eye_string('bottle2'))x3))x33),
SourceString => $ninety_nine } );
=head2 Sierpinski Triangles
A simple and concise Sierpinski triangle generator, F<siertri.pl>, is:
#!perl -l
$x=2**pop;print$"x--$x,map$x&$_?$"x2:"/\\",0..$y++while$x
which was posted by Mtv Europe to golf@perl.org on 14-sep-2002
as a one stroke improvement on Adam Antonik's original program.
Running:
perl siertri.pl 4
displays a Sierpinski triangle with 2**4 lines.
Proclaiming Mtv's program as the shortest (in Acme::EyeDrops 1.13)
only served to provoke Adam Antonik and Eugene van der Pijll into
shortening it by exploiting a hard C<$^F>, as shown in some of the
examples below:
-l print$"x--$x,map$x&$_?$"x2:"/\\",0..$_-1for 1..($x=2**pop)
-l $x=2**pop;print$"x--$x,map$x&$_?$"x2:"/\\",0..$y++while$x
-l $^F**=pop;print$"x--$^F,map$^F&$_?$"x2:"/\\",0..$y++while$^F
-lX061 print$"x--$/,map$/&$_?$"x2:"/\\",0..$y++while$/<<=pop
-l print$"x--$^F,map$^F&$_?$"x2:"/\\",0..$y++while$^F*=2**pop
-l $_=$"x2**pop;$_="$'/\\",print,s/(?<=\\)../$&^KI^D5/egwhile/^ /
An interesting obfuscated Sierpinski triangle generator is:
#!/usr/bin/perl -l
s--@{[(gE^Ge)=~/[^g^e]/g]}[g^e]x((!!+~~g^e^g^e)<<pop).!gE-ge,
s-[^ge^ge]-s,,,,s,@{[(g^';').(e^'?')]},(G^'/').(E^'|')^Ge,ge,
print,s,(?<=/[^g^e])[^g^e][^g^e],$&^(G^'/').(E^'|')^gE,ge-ge
As an alternative obfu, you can produce a Sierpinski triangle-shaped
Sierpinski triangle generator based on Mtv's program like this:
print sightly( { Regex => 1,
Compact => 1,
RemoveNewlines => 1,
Indent => 1,
BorderGap => 1,
BorderWidth => 2,
# For 'siertri' built-in shape, Width=>5 means:
# height is 2**5 lines
# width is 2 * 2**5 characters
Width => 5,
Shape => 'siertri',
SourceString => <<'END_SRC_STR' } );
$-=!$%<<(pop||4);print$"x$-,map($-&$_?' ':'/\\',$%..$.++),$/while$---
END_SRC_STR
producing:
''=~('(?{'.('`'|'%').('['^'-').('`'|'!').('`'|"\,").'"\\$-=!\\$%<<('.(
'['^'+').('`'|'/').('['^'+').'||'.('^'^('`'|'*')).');'.('['^'+').('['^
(( ((
(( (( ((
(( ')') ))
)) )) )) ))
)) .(('`')| ((
(( (( (( ((
(( ')') )))) ))
)) )) )) .( (( ((
(( '`'))))))|'.').( ((
(( (( (( ((
(( '[') )))) ))
)) )) )^ (( (( ((
lib/Acme/EyeDrops.pm view on Meta::CPAN
planet
map
flag
sport
underwear
hbanner
vbanner
logo
debian
opera
To give an example of how shape properties might be used,
to find all shapes that depict just the faces of perl hackers:
use Acme::EyeDrops qw(find_eye_shapes);
my @perlhackers = find_eye_shapes('face',
'person',
'perlhacker');
Note that there is an implicit AND between each keyword;
that is, the above code finds all shapes with face AND
person AND perlhacker keywords.
Additionally, you may use OR in any argument, for example:
my @perlhackers = find_eye_shapes('face',
'person OR animal',
'perlhacker');
finds all shapes matching face AND (person OR animal)
AND perlhacker.
Instead of using the API, as shown above, you may also use
the F<findshapes.pl> command in the F<demo> directory:
findshapes.pl -h (for help)
findshapes.pl -v face person perlhacker
The last example displays the faces and properties of all
perl hackers.
Please note that these shape properties are experimental and
may change in future A::E releases.
=head1 BUGS
A really diabolical shape with lots of single character lines
will defeat the shape-pouring algorithm.
You can eliminate all alphanumerics (via Regex => 1) only if the
program to be converted is careful with its use of regular
expressions and C<$_>.
To convert complex programs, you must use Regex => 0, which
emits a leading unsightly double C<eval>.
The code generated by non-zero Regex requires Perl 5.005 or higher
in order to run; when run on earlier versions, you will likely
see the error message: C<Sequence (?{...) not recognized>.
If using Perl 5.18+, the generated file needs a leading
"use re 'eval'" when a postive value for Regex is used.
The converted program runs inside an C<eval> which may cause
problems for non-trivial programs. A C<die> statement or
an C<INIT> block, for instance, may cause trouble.
If desperate, give the C<TrapEvalDie> and C<TrapWarn>
attributes a go, and see if they fix the problem.
If the program to be converted uses the Perl format variables
C<$:>, C<$~> or C<$^> you may need to explicitly set the
C<FillerVar> attribute to a Perl variable/s not used by the program.
Linux F</usr/games/banner> does not support the following characters:
\ [ ] { } < > ^ _ | ~
When the CPAN Text::Banner module is enhanced, it will be used
in place of the Linux banner command.
=head1 AUTHOR
Andrew Savige <asavige@cpan.org>
=head1 SEE ALSO
Acme::EyeDrops lightning talk by Flavio Poletti at YAPC::Europe 2008 at F<http://yapc.tv/>.
Acme::EyeDrops in JPerl Advent Calendar (Japanese)
at F<http://perl-users.jp/articles/advent-calendar/2009/casual/08.html>.
The history of Acme::Bleach, Acme::EyeDrops and related modules
at F<http://www.perlmonks.org/?node_id=967004>.
Software Art page at F<http://www.runme.org/>.
Acme's Y::E 2002 naked arm wrestling movie at
F<http://astray.com/tmp/yapcbits3.mov>.
Japanese translations of selected CPAN modules (including Acme::EyeDrops)
can be found at F<http://perldoc.jp/docs/modules/>.
(Japanized Perl Resources Project is at
F<https://sourceforge.jp/projects/perldocjp/>).
Perl Obfuscation Engines, for example, yaoe by Perl Monk mtve,
at F<http://www.perlmonks.org/index.pl?node_id=161087>.
More information on 99 bottles of beer can be found at
F<http://www.99-bottles-of-beer.net/> and
F<http://archive.develooper.com/fwp@perl.org/msg03193.html>.
Similar sites exist for I<hello world> programs
F<http://www2.latech.edu/~acm/HelloWorld.shtml>,
and I<quines>
F<http://www.nyx.net/~gthompso/quine.htm>.
To learn more about HQ9+ programming visit
F<http://www.cliff.biffle.org/esoterica/hq9plus.html> and
F<http://search.cpan.org/dist/HQ9PLUS/>.
Perl Monks Obfuscation section.
In particular, ideas for EyeDrops shapes were got from:
F<http://www.perlmonks.org/index.pl?node_id=45213>
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