imported>Aronlee90：使用HotCat已添加Category:辨识混淆

2021-09-25T06:05:42Z

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'''JAPH'''是'''Just another Perl hacker'''（中文：'''另一个Perl黑客'''）的缩写，指一个可以打印出“Just another Perl hacker,”的[[Perl]][[计算机程序|程序]]。（结尾的逗号有时候也可以忽略。）

JAPH程序通常会使用一种极端[[代码混淆|混淆]]的编写方式，在这一点上与[[国际C语言混乱代码大赛|混乱C语言]]有着相同的精神。最早的JAPH是由{{link-en|Randal L. Schwartz|Randal L. Schwartz}}发表在comp.lang.perl[[新闻组]]，他将一段可以打印出JAPH的Perl[[代码]]放在自己的[[签名|签名档]]里。<ref>Randal L. Schwartz in [[Usenet]] message M1HFPVH2JQ.FSF@HALFDOME.HOLDIT.COM explaining the origin of JAPH. Available through [http://groups.google.com/group/comp.lang.perl.misc/msg/ecc405feeefc120c Google.com] {{Wayback|url=http://groups.google.com/group/comp.lang.perl.misc/msg/ecc405feeefc120c |date=20121021184234 }}</ref>此后，编写JAPH成为Perl社区的一种[[网络文化]]。<ref>{{Cite web |url=http://www.perlmonks.org/?node_id=412464 |title=The Lighter Side of Perl Culture (Part II): JAPH |accessdate=2015-11-19 |archive-date=2015-11-19 |archive-url=https://web.archive.org/web/20151119175519/http://www.perlmonks.org/?node_id=412464 |dead-url=no }}</ref>

==例子==

一段完全没有混淆的JAPH代码：

<syntaxhighlight lang="perl">
print "Just another Perl hacker,";
</syntaxhighlight>

一段嵌入JAPH的晦涩代码：

<syntaxhighlight lang="perl">
$_='987;s/^(\d+)/$1-1/e;$1?eval:print"Just another Perl hacker,"';eval;
</syntaxhighlight>

表面上看和打印JAPH完全没关系的代码：

<syntaxhighlight lang="perl">
$_ = "wftedskaebjgdpjgidbsmnjgc";
tr/a-z/oh, turtleneck Phrase Jar!/; print;
</syntaxhighlight>

一段不含任何标点，只使用了Perl[[关键字]]的代码：<ref>Originally posted at [http://www.perlmonks.org/?node_id=290607 perlmonks.org] {{Wayback|url=http://www.perlmonks.org/?node_id=290607 |date=20201124121513 }} by user blokhead</ref>

<syntaxhighlight lang="perl">
not exp log srand xor s qq qx xor
s x x length uc ord and print chr
ord for qw q join use sub tied qx
xor eval xor print qq q q xor int
eval lc q m cos and print chr ord
for qw y abs ne open tied hex exp
ref y m xor scalar srand print qq
q q xor int eval lc qq y sqrt cos
and print chr ord for qw x printf
each return local x y or print qq
s s and eval q s undef or oct xor
time xor ref print chr int ord lc
foreach qw y hex alarm chdir kill
exec return y s gt sin sort split
</syntaxhighlight>

一段只含有标点，不含任何数字和字母的代码（由[https://metacpan.org/author/ROODE Eric Roode] {{Wayback|url=https://metacpan.org/author/ROODE |date=20190501222647 }}编写，只能在[[Unix]]和[[Unix-like]]系统上运行）：

<syntaxhighlight lang="perl">
`$=`;$_=\%!;($_)=/(.)/;$==++$|;($.,$/,$,,$\,$",$;,$^,$#,$~,$*,$:,@%)=(
$!=~/(.)(.).(.)(.)(.)(.)..(.)(.)(.)..(.)......(.)/,$"),$=++;$.++;$.++;
$_++;$_++;($_,$\,$,)=($~.$"."$;$/$%[$?]$_$\$,$:$%[$?]",$"&$~,$#,);$,++
;$,++;$^|=$";`$_$\$,$/$:$;$~$*$%[$?]$.$~$*${#}$%[$?]$;$\$"$^$~$*.>&$=`
</syntaxhighlight>

一个更短的纯标点代码，基于[[CPAN]]上的[https://metacpan.org/module/Acme::EyeDrops EyeDrops]{{Wayback|url=https://metacpan.org/module/Acme::EyeDrops |date=20191017175737 }}模块生成：
<syntaxhighlight lang="perl">
''=~('(?{'.('-)@.)@_*([]@!@/)(@)@-@),@(@@+@)'
^'][)@]`}`]()`@.@]@%[`}%[@`@!#@%[').',"})')
</syntaxhighlight>

一段形状像[[单峰骆驼]]（Perl的标志）的[[ASCII艺术]]代码，运行后也会输出JAPH和骆驼组成的动态的ASCII字符画：<ref>Originally posted at [http://www.perlmonks.org/?node_id=528042 perlmonks.org] {{Wayback|url=http://www.perlmonks.org/?node_id=528042 |date=20201125232906 }} by user liverpole.</ref>
<syntaxhighlight lang="perl">
#
sub j(\$){($
P,$V)= @_;while($$P=~s:^
([()])::x){ $V+=('('eq$1)?-32:31
}$V+=ord( substr( $$P,0,1,""))-74} sub a{
my($I,$K,$ J,$L)=@_ ;$I=int($I*$M/$Z);$K=int(
$K*$M/$Z);$J=int($J*$M /$Z);$L=int($L*$M/$Z); $G=$
J-$I;$F=$L-$K;$E=(abs($ G)>=abs($F))?$G:$F;($E<0) and($
I,$K)=($J,$L);$E||=.01 ;for($i=0;$i<=abs$E;$i++ ){ $D->{$K
+int($i*$F/$E) }->{$I+int($i*$G/$E)}=1}}sub p{$D={};$
Z=$z||.01;map{ $H=$_;$I=$N=j$H;$K=$O=j$H;while($H){$q=ord
substr($H,0,1,"" );if(42==$q){$J=j$H;$L=j$H}else{$q-=43;$L =$q
%9;$J=($q-$L)/9;$L=$q-9*$J-4;$J-=4}$J+=$I;$L+=$K;a($I,$K,$J,$ L);
($I,$K)=($J,$L)}a($I,$K,$N,$O)}@_;my$T;map{$y=$_;map{ $T.=$D->{$y}
->{$_}?$\:' '}(-59..59);$T.="\n"}(-23..23);print"\e[H$T"}$w= eval{
require Win32::Console::ANSI};$b=$w?'1;7;':"";($j,$u,$s,$t,$a,$n,$o
,$h,$c,$k,$p,$e,$r,$l,$C)=split/}/,'Tw*JSK8IAg*PJ[*J@wR}*JR]*QJ[*J'.
'BA*JQK8I*JC}KUz]BAIJT]*QJ[R?-R[e]\RI'.'}Tn*JQ]wRAI*JDnR8QAU}wT8KT'.
']n*JEI*EJR*QJ]*JR*DJ@IQ[}*JSe*JD[n]*JPe*'.'JBI/KI}T8@?PcdnfgVCBRcP'.
'?ABKV]]}*JWe*JD[n]*JPe*JC?8B*JE};Vq*OJQ/IP['.'wQ}*JWeOe{n*EERk8;'.
'J*JC}/U*OJd[OI@*BJ*JXn*J>w]U}CWq*OJc8KJ?O[e]U/T*QJP?}*JSe*JCnTe'.
'QIAKJR}*JV]wRAI*J?}T]*RJcJI[\]3;U]Uq*PM[wV]W]WCT*DM*SJ'. 'ZP[Z'.
'PZa[\]UKVgogK9K*QJ[\]n[RI@*EH@IddR[Q[]T]T]T3o[dk*JE'. '[Z\U'.
'{T]*JPKTKK]*OJ[QIO[PIQIO[[gUKU\k*JE+J+J5R5AI*EJ00'. 'BCB*'.
'DMKKJIR[Q+*EJ0*EK';sub h{$\ = qw(% & @ x)[int rand
4];map{printf "\e[$b;%dm",int(rand 6)+101-60* ($w
||0);system( "cls")if$w ;($A,$S)= ($_[1], $
_[0]);($M, @,)= split '}';for( $z=256
;$z>0; $z -=$S){$S*= $A;p @,} sleep$_
[2];while ($_[3]&&($ z+=$ S) <=256){
p@,}}("". "32}7D$j" ."}AG". "$u}OG"
."$s}WG" ."$t","" ."24}(" ."IJ$a"
."}1G$n" ."}CO$o" ."}GG$t" ."}QC"
."$h}" ."^G$e" ."})IG" ."$r",
"32}?" ."H$p}FG$e}QG$r". "}ZC"
."$l", "28}(LC" ."" ."".
"$h}:" ."J$a}EG". "$c"
."}M" ."C$k}ZG". "$e"
."}" ."dG$r","18" ."}("
."D;" ."$C" )}{h(16 ,1,1,0
);h(8, .98,0,0 );h(16 ,1,1,1)
;h(8.0 ,0.98,0, 1); redo}###
#written 060204 by
#liverpole @@@@@@@
#@@@@@@@@@@@
</syntaxhighlight>

==参见==
*[[国际C语言混乱代码大赛]]

==参考资料==
{{FOLDOC}}
<references/>

==外部链接==
*[https://web.archive.org/web/20041209175230/http://www-106.ibm.com/developerworks/linux/library/l-japh.html Cultured Perl: The Elegance of JAPH]
*[http://www.cpan.org/misc/japh JAPH合集] {{Wayback|url=http://www.cpan.org/misc/japh |date=20201217181950 }}, 一个在[[CPAN]]上整理的JAPH合集。
*[http://perlmonks.org/?node=Obfuscated%20Code Obfuscated code]{{Wayback|url=http://perlmonks.org/?node=Obfuscated%20Code |date=20151207023850 }}, [[PerlMonks]]中分享混乱代码的节点，其中有很多JAPH。

{{标准测试项目}}

[[Category:Perl]]
[[Category:辨识混淆]]

JAPH - 版本历史

imported>Aronlee90：​使用HotCat已添加Category:辨识混淆

imported>Aronlee90：使用HotCat已添加Category:辨识混淆