fix Makefile and README.md for 2020/ferguson2
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@@ -1,14 +1,41 @@
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#!/usr/bin/env make
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#
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# 2020 makefile
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# IOCCC 2020 winning entry - ferguson2
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################################################################################
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#
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# This work by Landon Curt Noll, Simon Cooper, and Leonid A. Broukhis
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# is licensed under:
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# Regarding individual entries:
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#
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# IOCCC winning entry code may not work on your system. Even with standards,
|
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# conditions and build environments change, especially when it comes to more
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# extreme code such you might find in an IOCCC winner. Moreover, what was
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# allowed and liked in one IOCCC contest may no longer be liked/allowed in
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# later IOCCC years.
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#
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# Corrections on winning author and fixing typos in remarks are VERY WELCOME.
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#
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# GitHub pull requests are welcome:
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#
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# If you have a patch that might make running an entry work in modern Unix-like
|
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# environments, please create a GitHub pull request for the IOCCC judges to
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# consider.
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#
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# Suggestions and corrections regarding Makefiles, winning author information,
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# fixing typos in remarks, and code patches are welcome via opening a GitHub
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# issue or better yet, by creating a GitHub pull request for the IOCCC judges
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# to consider. To form a GitHub issue or GitHub pull, please visit:
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#
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# https://github.com/ioccc-src/winner
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#
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################################################################################
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# This work by Landon Curt Noll and Leonid A. Broukhis is licensed under:
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#
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# Creative Commons Attribution-ShareAlike 3.0 Unported License.
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#
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# See: http://creativecommons.org/licenses/by-sa/3.0/
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#############################
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# shell used by this Makefile
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#############################
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@@ -19,264 +46,7 @@ SHELL= bash
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# common tool locations
|
||||
#######################
|
||||
#
|
||||
A2P= a2p
|
||||
AR= ar
|
||||
ASA= asa
|
||||
AT= at
|
||||
ATQ= atq
|
||||
ATRM= atrm
|
||||
AWK= awk
|
||||
BANNER= banner
|
||||
BASE64= base64
|
||||
BASENAME= basename
|
||||
BATCH= batch
|
||||
BC= bc
|
||||
BINHEX= binhex
|
||||
BISON= bison
|
||||
BUNZIP2= bunzip2
|
||||
BZCAT= bzcat
|
||||
BZCMP= bzcmp
|
||||
BZDIFF= bzdiff
|
||||
BZEGREP= bzegrep
|
||||
BZFGREP= bzfgrep
|
||||
BZGREP= bzgrep
|
||||
BZIP2= bzip2
|
||||
BZLESS= bzless
|
||||
BZMORE= bzmore
|
||||
C2PH= c2ph
|
||||
C89= c89
|
||||
C99= c99
|
||||
CAL= cal
|
||||
CALC= calc
|
||||
CAT= cat
|
||||
CD= cd
|
||||
CHFLAGS= chflags
|
||||
CHGRP= chgrp
|
||||
CHMOD= chmod
|
||||
CKSUM= cksum
|
||||
CLANG= clang
|
||||
CLANG_PLUSPLUS= clang++
|
||||
CLEAR= clear
|
||||
CMP= cmp
|
||||
COL= col
|
||||
COLLDEF= colldef
|
||||
COLRM= colrm
|
||||
COLUMN= column
|
||||
COMPRESS= compress
|
||||
CP= cp
|
||||
CPIO= cpio
|
||||
CPP= cpp
|
||||
CRC32= crc32
|
||||
CSH= csh
|
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CSPLIT= csplit
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CURL= curl
|
||||
CUT= cut
|
||||
C_PLUSPLUS= c++
|
||||
C_PLUSPLUS_FILT= c++filt
|
||||
DATE= date
|
||||
DC= dc
|
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DD= dd
|
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DF= df
|
||||
DIFF3= diff3
|
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DIFF= diff
|
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DIG= dig
|
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DIRNAME= dirname
|
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ED= ed
|
||||
EGREP= egrep
|
||||
ENV= env
|
||||
EQN= eqn
|
||||
ETAGS= etags
|
||||
EXPECT= expect
|
||||
EXPR= expr
|
||||
FALSE= false
|
||||
FGREP= fgrep
|
||||
FILE= file
|
||||
FIND2PERL= find2perl
|
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FIND= find
|
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FLEX= flex
|
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FLEX_PLUSPLUS= flex++
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FMT= fmt
|
||||
FOLD= fold
|
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FS_USAGE= fs_usage
|
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FUNZIP= funzip
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FUSER= fuser
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GCC= gcc
|
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GDIFFMK= gdiffmk
|
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GENCAT= gencat
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GENSTRINGS= genstrings
|
||||
GETOPT= getopt
|
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GETOPTS= getopts
|
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GINDENT= gindent
|
||||
GNUMAKE= gnumake
|
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GREP= grep
|
||||
GROFF= groff
|
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GROFFER= groffer
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GROG= grog
|
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GROPS= grops
|
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GROTTY= grotty
|
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GUNZIP= gunzip
|
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GVIM= gvim
|
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GZCAT= gzcat
|
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GZEXE= gzexe
|
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GZIP_PROG= gzip
|
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G_PLUSPLUS= g++
|
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H2PH= h2ph
|
||||
H2XS= h2xs
|
||||
HASH= hash
|
||||
HEAD= head
|
||||
HOSTNAME_PROG= hostname
|
||||
ICONV= iconv
|
||||
ID= id
|
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INDENT= indent
|
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INFO= info
|
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JOT= jot
|
||||
KILL= kill
|
||||
KSH= ksh
|
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LAST= last
|
||||
LD= ld
|
||||
LESSECHO= lessecho
|
||||
LEX= len
|
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LINK= link
|
||||
LN= ln
|
||||
LS= ls
|
||||
M4= m4
|
||||
MAKE= make
|
||||
MAN= man
|
||||
MKDIR= mkdir
|
||||
MKFIFO= mkfifo
|
||||
MKTEMP= mktemp
|
||||
MV= mv
|
||||
NANO= nano
|
||||
NASM= nasm
|
||||
NEQN= neqn
|
||||
NICE= nice
|
||||
NL= nl
|
||||
NM= nm
|
||||
NOHUP= nohup
|
||||
NROFF= nroff
|
||||
NSLOOKUP= nslookup
|
||||
OD= od
|
||||
OPENSSL= openssl
|
||||
PASTE= paste
|
||||
PATCH= patch
|
||||
PATHCHK= pathchk
|
||||
PAX= pax
|
||||
PERL= perl
|
||||
PICO= pico
|
||||
PR= pr
|
||||
PRINTENV= printenv
|
||||
PS= ps
|
||||
PTAR= ptar
|
||||
PTARDIFF= ptardiff
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PTARGREP= ptargrep
|
||||
PWD= pwd
|
||||
PYDOC= pydoc
|
||||
PYTHON= python
|
||||
PYTHONW= pythonw
|
||||
READLINK= readlink
|
||||
RENICE= renice
|
||||
RESET= reset
|
||||
REV= rev
|
||||
RI= ri
|
||||
RM= rm
|
||||
RMDIR= rmdir
|
||||
RSYNC= rsync
|
||||
RUBY= ruby
|
||||
RVIM= rvim
|
||||
SAY= say
|
||||
SCP= scp
|
||||
SCREEN= screen
|
||||
SCRIPT= script
|
||||
SDIFF= sdiff
|
||||
SED= sed
|
||||
SEQ= seq
|
||||
SFTP= sftp
|
||||
SH= sh
|
||||
SHA1= sha1
|
||||
SHA= sha
|
||||
SHAR= shar
|
||||
SHASUM5_18= shasum5.18
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||||
SHASUM= shasum
|
||||
SIZE= size
|
||||
SLEEP= sleep
|
||||
SORT= sort
|
||||
SSH= ssh
|
||||
STAT= stat
|
||||
STRIP= strip
|
||||
STTY= stty
|
||||
SUM= sum
|
||||
SYNC= sync
|
||||
TABS= tabs
|
||||
TAIL= tail
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||||
TAR= tar
|
||||
TEE= tee
|
||||
TEST= test
|
||||
TFTP= tftp
|
||||
TIDY= tidy
|
||||
TIME= time
|
||||
TOP= top
|
||||
TOUCH= touch
|
||||
TPUT= tout
|
||||
TPUT= tput
|
||||
TR= tr
|
||||
TROFF= troff
|
||||
TRUE= true
|
||||
TSET= tset
|
||||
TSORT= tsort
|
||||
UL= ul
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||||
UNAME= uname
|
||||
UNCOMPRESS= uncompress
|
||||
UNEXPAND= unexpand
|
||||
UNIFDEF= unifdef
|
||||
UNIFDEFALL= unifdefall
|
||||
UNIQ= uniq
|
||||
UNITS= units
|
||||
UNLINK= unlink
|
||||
UNZIP= unzip
|
||||
UNZIPSFX= unzipsfx
|
||||
UPTIME= uptime
|
||||
UUDECODE= uudecode
|
||||
UUENCODE= uuencode
|
||||
UUIDGEN= uuidgen
|
||||
VI= vi
|
||||
VIEW= view
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||||
VIM= vim
|
||||
VIMDIFF= vimdiff
|
||||
W= w
|
||||
WAIT4PATH= wait4path
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||||
WAIT= wait
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||||
WC= wc
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||||
WHAT= what
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||||
WHATIS= whatis
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||||
WHICH= which
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||||
WHO= who
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||||
WHOAMI= whoami
|
||||
WHOIS= whois
|
||||
WRTIE= write
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||||
XAR= xar
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||||
XARGS= xargs
|
||||
XATTR= xattr
|
||||
XXD= xxd
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||||
YACC= yacc
|
||||
YES= yes
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||||
ZCAT= zcat
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ZCMP= zcmp
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ZDIFF= zdiff
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ZEGREP= zegrep
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ZFGREP= zfgrep
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||||
ZFORCE= zforce
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||||
ZGREP= zgrep
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||||
ZIP= zip
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||||
ZIPCLOAK= zipcloak
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||||
ZIPGREP= zipgrep
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||||
ZIPINFO= zipinfo
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||||
ZIPNOTE= zipnote
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||||
ZIPSPLIT= zipsplit
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ZLESS= zless
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ZMORE= zmore
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ZNEW= znew
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ZPRINT= zprint
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ZSH= zsh
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include ../../var.mk
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# Set X11_LIBDIR to the directory where the X11 library resides
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#
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@@ -290,67 +60,25 @@ X11_LIBDIR= /opt/X11/lib
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#X11_INCDIR= /usr/X11/include
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X11_INCDIR= /opt/X11/include
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# CWARN - Silence warnings that ${CWARN} would normally complain about
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# CSILENCE -Compiler warnings
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# Common C compiler warnings to silence
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#
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ifeq ($(CC),clang)
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# clang CSILENCE and CWARN
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#
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#CSILENCE=
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CSILENCE=
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#CSILENCE= -Wno-implicit-int
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CSILENCE= -Wno-missing-variable-declarations -Wno-missing-prototypes -Wno-disabled-macro-expansion \
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-Wno-conversion -Wno-unused-value -Wno-empty-body -Wno-conversion -Wno-misleading-indentation \
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-Wno-comment -Wno-unknown-warning-option
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#
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#CWARN= $CSILENCE}
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#CWARN= -Wall $CSILENCE}
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#CWARN= -Wall -Wextra $CSILENCE}
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#CWARN= -Wall -Wextra -pedantic ${CSILENCE}
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#CWARN= -Wall -Wextra -Weverything $CSILENCE}
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CWARN= -Wall -Wextra -Weverything -pedantic ${CSILENCE}
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else
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ifeq ($(CC),gcc)
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# gcc CSILENCE and CWARN
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# Common C compiler warning flags
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#
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#CSILENCE=
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#CSILENCE= -Wno-implicit-int
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CSILENCE= -Wno-disabled-macro-expansion -Wno-conversion -Wno-unused-value -Wno-binding-in-condition \
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-Wno-empty-body -Wno-comment -Wno-misleading-indentation -Wno-unknown-warning-option
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#
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#CWARN= $CSILENCE}
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#CWARN= -Wall $CSILENCE}
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#CWARN= -Wall -Wextra $CSILENCE}
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#CWARN= ${CSILENCE}
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#CWARN= -Wall ${CSILENCE}
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#CWARN= -Wall -Wextra ${CSILENCE}
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CWARN= -Wall -Wextra -pedantic ${CSILENCE}
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else
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# default CSILENCE and WARN
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#
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#CSILENCE=
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#CSILENCE= -Wno-implicit-int
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CSILENCE= -Wno-disabled-macro-expansion -Wno-conversion -Wno-unused-value -Wno-empty-body \
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-Wno-comment -Wno-misleading-indentation -Wno-unknown-warning-option
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#
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#CWARN= $CSILENCE}
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#CWARN= -Wall $CSILENCE}
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#CWARN= -Wall -Wextra $CSILENCE}
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CWARN= -Wall -Wextra -pedantic ${CSILENCE}
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#CWARN= -Wall -Wextra -Weverything $CSILENCE}
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#CWARN= -Wall -Wextra -Weverything -pedantic ${CSILENCE}
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endif
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endif
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# compiler standard
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# Compiler standard
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#
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#CSTD=
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#CSTD= -ansi
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CSTD= -std=c11
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CSTD= -std=gnu17
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# compiler bit architecture
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# Compiler bit architecture
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||||
#
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||||
# Some entries require 32-bitness:
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||||
# ARCH= -m32
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||||
@@ -362,21 +90,21 @@ CSTD= -std=c11
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||||
#
|
||||
ARCH=
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# defines that are needed to compile
|
||||
# Defines that are needed to compile
|
||||
#
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||||
#CDEFINE=
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#CDEFINE= -DIOCCC
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CDEFINE= -D_POSIX_C_SOURCE=200809L
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|
||||
# include files that are needed to compile
|
||||
# Include files that are needed to compile
|
||||
#
|
||||
CINCLUDE=
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||||
#CINCLUDE= -include stdlib.h
|
||||
#CINCLUDE= -include stdio.h
|
||||
#CINCLUDE= -include stdlib.h -include stdio.h
|
||||
#CINCLUDE= -I ${X11_INCDIR}
|
||||
#CINCLUDE= `${SDL2_CONFIG} --cflags`
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||||
|
||||
# optimization
|
||||
# Optimization
|
||||
#
|
||||
# Most compiles will safely use -O2. Some can use only -O1 or -O.
|
||||
# A few compilers have broken optimizers or this entry make break
|
||||
@@ -389,40 +117,58 @@ CINCLUDE=
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||||
#OPT= -O2
|
||||
OPT= -O3
|
||||
|
||||
# default flags for ANSI C compilation
|
||||
# Default flags for ANSI C compilation
|
||||
#
|
||||
CFLAGS= ${CSTD} ${CWARN} ${ARCH} ${CDEFINE} ${CINCLUDE} ${OPT}
|
||||
|
||||
# Libraries needed to build
|
||||
#
|
||||
LIBS=
|
||||
#LIBS= -L ${X11_LIBDIR}
|
||||
#LIBS= -lm
|
||||
#LIBS= -L ${X11_LIBDIR} -lX11
|
||||
#LIBS= `${SDL2_CONFIG} --libs`
|
||||
|
||||
# ANSI compiler
|
||||
#
|
||||
# Set CC to the name of your ANSI compiler.
|
||||
#
|
||||
# Some entries seem to need gcc. If you have gcc, set
|
||||
# both CC and MAY_NEED_GCC to gcc.
|
||||
#
|
||||
# If you do not have gcc, set CC to the name of your ANSI compiler, and
|
||||
# set MAY_NEED_GCC to either ${CC} (and hope for the best) or to just :
|
||||
# to disable such programs.
|
||||
# C compiler to use
|
||||
#
|
||||
CC= cc
|
||||
#CC= clang
|
||||
MAY_NEED_GCC= gcc
|
||||
#CC=clang
|
||||
#CC=gcc
|
||||
|
||||
# Compiler add-ons or replacements for clang only
|
||||
#
|
||||
ifeq ($(CC),clang)
|
||||
#
|
||||
CSILENCE= -Wno-implicit-int-conversion -Wno-missing-prototypes \
|
||||
-Wno-missing-variable-declarations -Wno-poison-system-directories \
|
||||
-Wno-shorten-64-to-32
|
||||
#
|
||||
CWARN+= -Weverything
|
||||
#
|
||||
endif
|
||||
|
||||
# Specific add-ons or replacements for gcc only
|
||||
#
|
||||
ifeq ($(CC),gcc)
|
||||
#
|
||||
#CSILENCE+=
|
||||
#
|
||||
#CWARN+=
|
||||
#
|
||||
endif
|
||||
|
||||
|
||||
##############################
|
||||
# Special flags for this entry
|
||||
##############################
|
||||
#
|
||||
OBJ= prog.o recode.o
|
||||
ENTRY= ferguson2
|
||||
PROG= prog
|
||||
#
|
||||
OBJ= ${PROG}.o
|
||||
DATA= chocolate-cake.md enigma.1 input.txt obfuscation.key \
|
||||
obfuscation.md obfuscation.txt recode.1 recode.md \
|
||||
try.this.txt
|
||||
TARGET= prog recode
|
||||
TARGET= ${PROG}
|
||||
#
|
||||
ALT_OBJ=
|
||||
ALT_TARGET=
|
||||
@@ -432,18 +178,19 @@ ALT_TARGET=
|
||||
# build the entry
|
||||
#################
|
||||
#
|
||||
all: ${TARGET} ${DATA}
|
||||
all: data ${TARGET}
|
||||
@${TRUE}
|
||||
|
||||
prog: prog.c
|
||||
${CC} ${CFLAGS} $< -o $@ ${LIBS}
|
||||
.PHONY: all alt data everything clean clobber install \
|
||||
love haste waste maker easter_egg sandwich \
|
||||
supernova deep_magic magic charon pluto
|
||||
|
||||
recode: recode.c
|
||||
${PROG}: ${PROG}.c
|
||||
${CC} ${CFLAGS} $< -o $@ ${LIBS}
|
||||
|
||||
# alternative executable
|
||||
#
|
||||
alt: ${ALT_TARGET}
|
||||
alt: data ${ALT_TARGET}
|
||||
@${TRUE}
|
||||
|
||||
# data files
|
||||
@@ -451,13 +198,15 @@ alt: ${ALT_TARGET}
|
||||
data: ${DATA}
|
||||
@${TRUE}
|
||||
|
||||
# both all and alt
|
||||
#
|
||||
everything: all alt
|
||||
|
||||
|
||||
###############
|
||||
# utility rules
|
||||
###############
|
||||
#
|
||||
everything: all alt
|
||||
|
||||
clean:
|
||||
${RM} -f ${OBJ} ${ALT_OBJ}
|
||||
@-if [ -f indent.c ]; then \
|
||||
@@ -472,27 +221,13 @@ clobber: clean
|
||||
echo 'ate sandwich'; \
|
||||
fi
|
||||
|
||||
nuke: clobber
|
||||
@${TRUE}
|
||||
|
||||
dist_clean: nuke
|
||||
@${TRUE}
|
||||
|
||||
install:
|
||||
@echo "Surely you are performing, Dr. Science!"
|
||||
@echo "Dr. Spock says that is not logical!"
|
||||
@${TRUE}
|
||||
|
||||
test:
|
||||
@: # dummy target for my dev builds
|
||||
|
||||
# backwards compatibility
|
||||
# you may be able to misunderstand the source by reading indent.c
|
||||
#
|
||||
build: all
|
||||
@${TRUE}
|
||||
|
||||
# you may be able to mis-understand the source by reading indent.c
|
||||
#
|
||||
indent.c: prog.c
|
||||
indent.c: ${PROG}.c
|
||||
@if which "${GINDENT}" >/dev/null 2>&1; then \
|
||||
echo ${RM} -f $@; \
|
||||
${RM} -f $@; \
|
||||
@@ -504,7 +239,7 @@ indent.c: prog.c
|
||||
echo "${INDENT} < $< > $@"; \
|
||||
${INDENT} < $< > $@; \
|
||||
else \
|
||||
echo "no intent prog found, ident $< yourself, sorry"; \
|
||||
echo "no intent tool found, ident $< yourself, sorry"; \
|
||||
echo "exit 1"; \
|
||||
exit 1; \
|
||||
fi
|
||||
@@ -526,26 +261,21 @@ waste:
|
||||
@echo 'haste'
|
||||
@${TRUE}
|
||||
|
||||
make:
|
||||
@echo 'We encourage you to attend a maker faire'
|
||||
maker:
|
||||
@echo 'Participate in a maker faire'
|
||||
@${TRUE}
|
||||
|
||||
easter_egg:
|
||||
@echo you expected to often mis-understand this $${RANDOM} magic
|
||||
@echo chongo '<was here>' "/\\oo/\\"
|
||||
@echo Eggy and Kitty
|
||||
@echo "you expected to often misunderstand this $${RANDOM} magic"
|
||||
@echo "chongo '<was here>' /\\oo/\\"
|
||||
@echo "Eggy"
|
||||
|
||||
fabricate fashion form frame manufacture produce: make
|
||||
@${TRUE}
|
||||
|
||||
sandwich:
|
||||
sandwich: easter_egg
|
||||
@if [ `id -u` -eq 0 ]; then \
|
||||
echo 'Okay.'; \
|
||||
echo $${RANDOM}`date +%s`$${RANDOM} | \
|
||||
${SHASUM} -a 512256 | \
|
||||
${SED} -e 's/ .*//' > $@; \
|
||||
echo "$${RANDOM}`date +%s`$${RANDOM}" > $@; \
|
||||
else \
|
||||
echo 'Reall?!? Make it yourself.'; \
|
||||
echo 'What? Make it yourself.'; \
|
||||
exit 1; \
|
||||
fi
|
||||
|
||||
@@ -553,47 +283,47 @@ sandwich:
|
||||
# as well as the West Coast Computer Faire and
|
||||
# you might be confused different. :-)
|
||||
#
|
||||
supernova: nuke
|
||||
supernova: sandwich
|
||||
@-if [ -r .code_anal ]; then \
|
||||
${RM} -f .code_anal_v6; \
|
||||
else \
|
||||
echo "planet deniers, like a few silly IAU members, are so cute when they try to defend their logic"; \
|
||||
echo "planet deniers, like some members of the IAU, are so cute when they try to defend their logic"; \
|
||||
fi
|
||||
@echo A $@ helps ${MAKE} the elements that help form planets
|
||||
@echo "A $@ helps ${MAKE} the elements that help form planets"
|
||||
@${TRUE}
|
||||
|
||||
deep_magic:
|
||||
deep_magic: supernova
|
||||
@-if [ -r .code_anal ]; then \
|
||||
ccode_analysis --deep_magic 253d8c80830e2df66c018820004b3d4939821bbd7d781fc50d9e633797e44f65d1d62c707bb7e5a82c328a37bbf9ecb4c46fb56aa3f08641fcf45d10ba3c6081 --FNV1a_hash_512_bit "prog"; \
|
||||
ccode_analysis --deep_magic 7889066cdbdf09b0408021754586e895be641cc9be29e7eafd3ca65359541f17 \
|
||||
--FNV1a_hash_512_bit -v2 "${PROG}" "${PROG}.c"; \
|
||||
else \
|
||||
echo "Wrong! Do it again!"; \
|
||||
sleep 1; \
|
||||
sleep 2; \
|
||||
echo "Wrong! Do it again!"; \
|
||||
sleep 1; \
|
||||
sleep 2; \
|
||||
echo "Wrong! Do it again!"; \
|
||||
fi
|
||||
@${TRUE}
|
||||
|
||||
magic: deep_magic
|
||||
@-if [ -r .code_anal ]; then \
|
||||
ccode_analysis --level 391581 --mode 216193 --state Riesel --FNV1a_hash_512_bit "prog"; \
|
||||
ccode_analysis --level 20003 --mode 5717175 --FNV1a_hash_512_bit -v2 "${PROG}" "${PROG}.c"; \
|
||||
else \
|
||||
echo "If you don't eat yer meat, you can't have any pudding!"; \
|
||||
echo "How can you have any pudding if you don't eat yer meat?!"; \
|
||||
echo "Be careful with that axe, Eugene."; \
|
||||
fi
|
||||
@${TRUE}
|
||||
|
||||
# The IOCCC resident astronomer states
|
||||
#
|
||||
charon: supernova
|
||||
@echo $@ is a dwarf planet
|
||||
@echo dwarf is a type of planet
|
||||
@echo therefore we continue to tell the IAU that $@ is a planet
|
||||
charon: magic
|
||||
@echo "$@ is a dwarf planet"
|
||||
@echo "dwarf is a type of planet"
|
||||
@echo "therefore IAU, $@ is a planet"
|
||||
|
||||
pluto: supernova
|
||||
pluto: charon
|
||||
${MAKE} charon
|
||||
@echo $@ is a dwarf planet
|
||||
@echo dwarf is a type of planet
|
||||
@echo therefore, $@ is a planet
|
||||
@echo having lots of planets is good feature because supernovae can help ${MAKE} a lot of them
|
||||
@echo "$@ is a dwarf planet"
|
||||
@echo "dwarf is a type of planet"
|
||||
@echo "therefore, $@ is a planet"
|
||||
@echo "having lots of planets is good feature because supernovae can help ${MAKE} a lot of them"
|
||||
+170
-123
@@ -1,36 +1,43 @@
|
||||
# Most enigmatic
|
||||
|
||||
```
|
||||
Cody Boone Ferguson <ioccc@xexyl.net>
|
||||
<https://ioccc.xexyl.net>
|
||||
Twitter: @xexyl
|
||||
```
|
||||
|
||||
## To build:
|
||||
|
||||
The code for this entry can be found in prog.c
|
||||
```sh
|
||||
make
|
||||
```
|
||||
|
||||
## Judges' comments:
|
||||
### To use:
|
||||
### To run:
|
||||
|
||||
make
|
||||
./prog
|
||||
```sh
|
||||
./prog
|
||||
```
|
||||
|
||||
### Try:
|
||||
|
||||
# IOCCC obfuscated!
|
||||
echo IOCCC | ./prog
|
||||
```sh
|
||||
# IOCCC obfuscated!
|
||||
echo IOCCC | ./prog
|
||||
|
||||
# IOCCC obfuscated and de-obfuscated!
|
||||
echo IOCCC | ./prog | ./prog
|
||||
# IOCCC obfuscated and de-obfuscated!
|
||||
echo IOCCC | ./prog | ./prog
|
||||
|
||||
# more input fun
|
||||
./prog - < try.this.txt 2>/dev/null
|
||||
# more input fun
|
||||
./prog - < try.this.txt 2>/dev/null
|
||||
|
||||
# more obfuscated fun
|
||||
echo testing test tests | ./recode
|
||||
echo testing test tests | ./recode | ./prog - 2>/dev/null
|
||||
echo testing test tests | ./recode | ./prog - 2>/dev/null | ./recode
|
||||
echo testing test tests | ./recode | ./prog - 2>/dev/null | ./recode | ./prog - 2>/dev/null
|
||||
# more obfuscated fun
|
||||
echo testing test tests | ./recode
|
||||
echo testing test tests | ./recode | ./prog - 2>/dev/null
|
||||
echo testing test tests | ./recode | ./prog - 2>/dev/null | ./recode
|
||||
echo testing test tests | ./recode | ./prog - 2>/dev/null | ./recode | ./prog - 2>/dev/null
|
||||
```
|
||||
|
||||
### Selected Judges Remarks:
|
||||
## Judges' comments:
|
||||
|
||||
This code is an enigma. Try to decode it!
|
||||
|
||||
@@ -40,7 +47,9 @@ There is a good deal of useful documentation that is provided with this entry:
|
||||
|
||||
A useful man page for this entry. To render, try:
|
||||
|
||||
man ./enigma.1
|
||||
```sh
|
||||
man ./enigma.1
|
||||
```
|
||||
|
||||
* recode.md ([recode.html][])
|
||||
|
||||
@@ -54,6 +63,7 @@ Because most of us could use some *Double-layered Chocolate Fudge Cake*!
|
||||
[chocolate-cake.html]: chocolate-cake.html
|
||||
|
||||
## Author's comments:
|
||||
|
||||
My remarks about my Heer 'Army' and Luftwaffe 'Air Force' Enigma simulator for
|
||||
the 27th IOCCC.
|
||||
|
||||
@@ -137,19 +147,21 @@ loop!
|
||||
|
||||
The author (Nathan) of the [1992 Worst Abuse of the Rules][] had this to say:
|
||||
|
||||
This program is a hello world text encrypter/decrypter. It uses an
|
||||
enigma (I think) style encryption algorithm, where the encryption
|
||||
key character is modified by a value, determined from the previous
|
||||
character. Non-printable characters (those with ASCII values < ' '
|
||||
or > 0x7e) are passed unaltered, thus any kind of file may be
|
||||
successfully processed, but if the original is printable, the
|
||||
processed file will be too. The input is read from stdin, and the
|
||||
output presented to stdout. The key, a text string, is presented as
|
||||
a command argument. This is optional, and if omitted, the file is
|
||||
self-{de,en}crypted. To specify decryption, a "-" should be given
|
||||
before the key. (Actually encryption and decryption proper inverse
|
||||
operations, so you can use decrypt to scramble and encrypt to
|
||||
descramble, if you're perverse.)
|
||||
```
|
||||
This program is a hello world text encrypter/decrypter. It uses an
|
||||
enigma (I think) style encryption algorithm, where the encryption
|
||||
key character is modified by a value, determined from the previous
|
||||
character. Non-printable characters (those with ASCII values < ' '
|
||||
or > 0x7e) are passed unaltered, thus any kind of file may be
|
||||
successfully processed, but if the original is printable, the
|
||||
processed file will be too. The input is read from stdin, and the
|
||||
output presented to stdout. The key, a text string, is presented as
|
||||
a command argument. This is optional, and if omitted, the file is
|
||||
self-{de,en}crypted. To specify decryption, a "-" should be given
|
||||
before the key. (Actually encryption and decryption proper inverse
|
||||
operations, so you can use decrypt to scramble and encrypt to
|
||||
descramble, if you're perverse.)
|
||||
```
|
||||
|
||||
But the Enigma algorithm is more complex than that and my entry can encipher and
|
||||
decipher text in the manner of the Enigma machines of the Army (Heer) and Air
|
||||
@@ -174,7 +186,9 @@ the result (after finishing the enciphering).
|
||||
|
||||
If you run it like:
|
||||
|
||||
./prog -
|
||||
```sh
|
||||
./prog -
|
||||
```
|
||||
|
||||
It will prompt you for the settings of the machine (example below).
|
||||
|
||||
@@ -198,31 +212,32 @@ general program as well as how to use the two winning entries of the Morse code
|
||||
that I referred to earlier:
|
||||
|
||||
|
||||
$ ./prog -
|
||||
Ring 1: 3
|
||||
Setting 1: I
|
||||
Position 1: O
|
||||
Ring 2: 1
|
||||
Setting 2: C
|
||||
Position 2: C
|
||||
Ring 3: 5
|
||||
Setting 3: C
|
||||
Position 3: Z
|
||||
Reflector: 2
|
||||
Plugboard pair 1: CO
|
||||
Plugboard pair 2: DE
|
||||
Plugboard pair 3: SN
|
||||
Plugboard pair 4: XY
|
||||
Plugboard pair 5: MS
|
||||
Plugboard pair 6: AT
|
||||
Plugboard pair 7: VF
|
||||
Plugboard pair 8: UR
|
||||
Plugboard pair 9: KL
|
||||
Plugboard pair 10: BJ
|
||||
IOCCC
|
||||
^D
|
||||
CFDRG
|
||||
|
||||
```sh
|
||||
$ ./prog -
|
||||
Ring 1: 3
|
||||
Setting 1: I
|
||||
Position 1: O
|
||||
Ring 2: 1
|
||||
Setting 2: C
|
||||
Position 2: C
|
||||
Ring 3: 5
|
||||
Setting 3: C
|
||||
Position 3: Z
|
||||
Reflector: 2
|
||||
Plugboard pair 1: CO
|
||||
Plugboard pair 2: DE
|
||||
Plugboard pair 3: SN
|
||||
Plugboard pair 4: XY
|
||||
Plugboard pair 5: MS
|
||||
Plugboard pair 6: AT
|
||||
Plugboard pair 7: VF
|
||||
Plugboard pair 8: UR
|
||||
Plugboard pair 9: KL
|
||||
Plugboard pair 10: BJ
|
||||
IOCCC
|
||||
^D
|
||||
CFDRG
|
||||
```
|
||||
|
||||
Notice that all output except the deciphered/enciphered text is sent to stdout.
|
||||
|
||||
@@ -231,17 +246,20 @@ default settings; as the judges suggest this invocation I will not show it here.
|
||||
|
||||
But you can also type it out like this:
|
||||
|
||||
$ ./prog
|
||||
IOCCC
|
||||
UUMMX
|
||||
|
||||
```sh
|
||||
$ ./prog
|
||||
IOCCC
|
||||
UUMMX
|
||||
```
|
||||
|
||||
The IOCCC comes from stdin; the `UUMMX` is written to stdout.
|
||||
|
||||
If I compile the 2014 entry and copy it to my local directory as
|
||||
`vik` I might do:
|
||||
|
||||
$ echo TEST|./prog |./vik | mplayer -demuxer rawaudio -
|
||||
```sh
|
||||
$ echo TEST|./prog |./vik | mplayer -demuxer rawaudio -
|
||||
```
|
||||
|
||||
And you would hear Morse code of the Enigma output of 'TEST' (i.e. `KCWV`). Or
|
||||
perhaps not in this case. I'm not sure: I discovered a bug in that entry
|
||||
@@ -250,41 +268,53 @@ perhaps not in this case. I'm not sure: I discovered a bug in that entry
|
||||
For example I can use the syntax provided in the winning remarks along with my
|
||||
entry to write it to a file. Say:
|
||||
|
||||
$ echo TEST|./prog |./vik > test.raw
|
||||
$ ./vik e < test.raw | ./prog
|
||||
LEST
|
||||
```sh
|
||||
$ echo TEST|./prog |./vik > test.raw
|
||||
$ ./vik e < test.raw | ./prog
|
||||
LEST
|
||||
```
|
||||
|
||||
Why did that happen? This shows more details:
|
||||
|
||||
$ ./vik e < test.raw
|
||||
SCWV
|
||||
```sh
|
||||
$ ./vik e < test.raw
|
||||
SCWV
|
||||
```
|
||||
|
||||
However as can be seen the first char is wrong:
|
||||
|
||||
$ echo TEST|./prog
|
||||
KCWV
|
||||
```sh
|
||||
$ echo TEST|./prog
|
||||
KCWV
|
||||
```
|
||||
|
||||
And piping the original output to my entry itself you get the original input:
|
||||
|
||||
$ echo TEST | ./prog | ./prog
|
||||
TEST
|
||||
```sh
|
||||
$ echo TEST | ./prog | ./prog
|
||||
TEST
|
||||
```
|
||||
|
||||
I'm not sure what causes that or if there's a way to fix it but that's the
|
||||
idea anyway. Neither do I know if the original transcoding is correct.
|
||||
|
||||
What if I use the input string 'LEST' instead? In that case it worked fine:
|
||||
|
||||
$ echo LEST | ./prog | ./vik > lest.raw
|
||||
$ ./vik e < lest.raw | ./prog
|
||||
LEST
|
||||
```sh
|
||||
$ echo LEST | ./prog | ./vik > lest.raw
|
||||
$ ./vik e < lest.raw | ./prog
|
||||
LEST
|
||||
```
|
||||
|
||||
But there's one obvious question, right? Let's try the most important one:
|
||||
|
||||
$ echo IOCCC | ./prog | ./vik > ioccc.raw
|
||||
$ ./vik e < ioccc.raw
|
||||
UUMMX
|
||||
$ ./vik e < ioccc.raw | ./prog
|
||||
IOCCC
|
||||
```sh
|
||||
$ echo IOCCC | ./prog | ./vik > ioccc.raw
|
||||
$ ./vik e < ioccc.raw
|
||||
UUMMX
|
||||
$ ./vik e < ioccc.raw | ./prog
|
||||
IOCCC
|
||||
```
|
||||
|
||||
Phew! The program redeemed itself after the test failure! :)
|
||||
|
||||
@@ -294,8 +324,10 @@ too. Notice also how it showed the same output that my program gave it - `UUMMX`
|
||||
|
||||
What about the other Morse code entry?
|
||||
|
||||
$ echo IOCCC | ./prog | ./dorssel
|
||||
..- ..- -- -- -..-
|
||||
```sh
|
||||
$ echo IOCCC | ./prog | ./dorssel
|
||||
..- ..- -- -- -..-
|
||||
```
|
||||
|
||||
### <a name="recode" href="#toc">The recode.c configurator</a>
|
||||
|
||||
@@ -331,26 +363,28 @@ The parser is in a sense rather rudimentary but allows for both interactive and
|
||||
automatic (e.g. via the recode program) input. This does mean that something
|
||||
like the following can happen:
|
||||
|
||||
$ ./prog -
|
||||
Ring 1: 1AB
|
||||
Setting 1: Position 1: Ring 2: 2CD
|
||||
Setting 2: Position 2: Ring 3: 3
|
||||
Setting 3: A
|
||||
Position 3: B
|
||||
Reflector: 1A
|
||||
Plugboard pair 1: BC
|
||||
Plugboard pair 2: ..
|
||||
Plugboard pair 3: ..
|
||||
Plugboard pair 4: DE
|
||||
Plugboard pair 5: FG
|
||||
Plugboard pair 6: HI
|
||||
Plugboard pair 7: JK
|
||||
Plugboard pair 8: LM
|
||||
Plugboard pair 9: NO
|
||||
Plugboard pair 10: PQ
|
||||
IOCCC
|
||||
WD
|
||||
SIRDK
|
||||
```sh
|
||||
$ ./prog -
|
||||
Ring 1: 1AB
|
||||
Setting 1: Position 1: Ring 2: 2CD
|
||||
Setting 2: Position 2: Ring 3: 3
|
||||
Setting 3: A
|
||||
Position 3: B
|
||||
Reflector: 1A
|
||||
Plugboard pair 1: BC
|
||||
Plugboard pair 2: ..
|
||||
Plugboard pair 3: ..
|
||||
Plugboard pair 4: DE
|
||||
Plugboard pair 5: FG
|
||||
Plugboard pair 6: HI
|
||||
Plugboard pair 7: JK
|
||||
Plugboard pair 8: LM
|
||||
Plugboard pair 9: NO
|
||||
Plugboard pair 10: PQ
|
||||
IOCCC
|
||||
WD
|
||||
SIRDK
|
||||
```
|
||||
|
||||
First of all: what is that WD? I didn't type that but it appeared it seems due
|
||||
to too much input that triggers this (it happens when I hit ctrl-d to end
|
||||
@@ -387,11 +421,12 @@ should help you remember (though not at this time in our world it might help you
|
||||
later on?). This might become even more useful after the challenge is accepted,
|
||||
accomplished and made use of! :)
|
||||
|
||||
$ echo ABC | ./prog
|
||||
GYM
|
||||
$ echo ABC | ./prog | ./prog
|
||||
ABC
|
||||
|
||||
```sh
|
||||
$ echo ABC | ./prog
|
||||
GYM
|
||||
$ echo ABC | ./prog | ./prog
|
||||
ABC
|
||||
```
|
||||
|
||||
### <a name="layout" href="#toc">On the source code layout</a>
|
||||
|
||||
@@ -414,8 +449,10 @@ fix but I consider this inconsequential).
|
||||
|
||||
As for recode.c though I really love this:
|
||||
|
||||
/\
|
||||
/ This is *not* what you think:
|
||||
```
|
||||
/\
|
||||
/ This is *not* what you think:
|
||||
```
|
||||
|
||||
...because it seems so wrong in C code at first glance.
|
||||
|
||||
@@ -427,11 +464,15 @@ It's an Enigma simulator! Isn't that proof that it's obfuscated itself?! :)
|
||||
Silliness aside [obfuscation.txt][] has some of the ways I think this entry is
|
||||
obfuscated. To decipher try:
|
||||
|
||||
./recode -Robfuscation.key -fobfuscation.txt | ./prog - 2>/dev/null > obfuscation.md
|
||||
```sh
|
||||
./recode -Robfuscation.key -fobfuscation.txt | ./prog - 2>/dev/null > obfuscation.md
|
||||
```
|
||||
|
||||
To encipher:
|
||||
|
||||
./recode -Robfuscation.key -fobfuscation.md | ./prog - 2>/dev/null > obfuscation.txt
|
||||
```sh
|
||||
./recode -Robfuscation.key -fobfuscation.md | ./prog - 2>/dev/null > obfuscation.txt
|
||||
```
|
||||
|
||||
The file [obfuscation.key][] is the key to decipher/encipher
|
||||
[obfuscation.txt][].
|
||||
@@ -446,9 +487,10 @@ fun way to explore this entry.
|
||||
As for the [obfuscation.key][] file if you observe the contents you'll find the
|
||||
word OBFUSCATION:
|
||||
|
||||
2OB5FU1SC2ATIONCDEFGHJKLMPQRYZ
|
||||
OB FU SC ATION
|
||||
|
||||
```
|
||||
2OB5FU1SC2ATIONCDEFGHJKLMPQRYZ
|
||||
OB FU SC ATION
|
||||
```
|
||||
|
||||
### <a name="bugs" href="#toc">Bugs, limitations, differences from the real Enigma machines and general notes</a>
|
||||
|
||||
@@ -467,11 +509,13 @@ program *however does validate this* (except when reading in settings via the
|
||||
to B then no other letters can connect to A or B. Earlier there wasn't proper
|
||||
detection and this caused invalid output.
|
||||
|
||||
Why only 10 pairs when the German alphabet has 26 letters? It's
|
||||
theoretically possible to have 13 but the Enigma typically had 10 pairs.
|
||||
It's easy enough to update my entry to do this once you de-obfuscate it but
|
||||
I'm not helping there (and in fact I don't think I could any more even if I
|
||||
wanted to - at least not easily!).
|
||||
```
|
||||
Why only 10 pairs when the German alphabet has 26 letters? It's
|
||||
theoretically possible to have 13 but the Enigma typically had 10 pairs.
|
||||
It's easy enough to update my entry to do this once you de-obfuscate it but
|
||||
I'm not helping there (and in fact I don't think I could any more even if I
|
||||
wanted to - at least not easily!).
|
||||
```
|
||||
|
||||
* It does not obviously have the clicking sound associated with the moving
|
||||
parts of the real machine. I think it would be annoying to have this as it
|
||||
@@ -599,8 +643,10 @@ simulator make sure to use Rotors I, II and III and the starting positions at B,
|
||||
B and C respectively (as in left, centre, right). To do this click the button at
|
||||
the top right that looks like:
|
||||
|
||||
o->
|
||||
<-o
|
||||
```
|
||||
o->
|
||||
<-o
|
||||
```
|
||||
|
||||
And then select the rotors. Next click the button again at the left of the
|
||||
rotor selection 'screen'. Then use the arrow buttons above each rotor to set
|
||||
@@ -620,7 +666,9 @@ determine if the ring settings being different from ABC would cause a problem
|
||||
Going back to the configuring the online simulator try inputting the text IOCCC
|
||||
and you'll see the resulting text being:
|
||||
|
||||
UUMMX
|
||||
```
|
||||
UUMMX
|
||||
```
|
||||
|
||||
Which is exactly as my entry shows! So at least for the starting position BBC
|
||||
and an empty plugboard and the other defaults in my entry (which appear to be
|
||||
@@ -737,11 +785,10 @@ as well as the award titles. And yes indeed 'most of us could use
|
||||
|
||||
[Double-layered Chocolate Fudge Cake]: chocolate-cake.html
|
||||
|
||||
## Copyright:
|
||||
|
||||
-----------------------------------------------------------------------------------------------------
|
||||
(c) Copyright 1984-2020, [Leo Broukhis, Simon Cooper, Landon Curt Noll][judges] - All rights reserved
|
||||
This work is licensed under a [Creative Commons Attribution-ShareAlike 3.0 Unported License][cc].
|
||||
|
||||
[judges]: http://www.ioccc.org/judges.html
|
||||
[cc]: http://creativecommons.org/licenses/by-sa/3.0/
|
||||
-----------------------------------------------------------------------------------------------------
|
||||
Reference in new issue
Block a user