PocketFuck
PocketFuck is an image version of brainfuck by User:None1. Programs in this esolang are small enough to be put in your pocket!
How to write Programs
To write a program in PocketFuck, first write a program in brainfuck, and pad it in the end with the + instruction until the number of instructions is divisible by 8, then convert every instruction into 3 binary bits using the table below.
| Binary Conversion | brainfuck |
|---|---|
| 000 | + |
| 001 | - |
| 010 | > |
| 011 | < |
| 100 | , |
| 101 | . |
| 110 | [ |
| 111 | ] |
Then group the binary bits 24 by 24, every 24 bits stands for the RGB value (e.g.: 100110101100111000000000 becomes (154, 206, 0)) of a pixel in the image.
Finally, arrange the pixels into an image, starting from the top left corner, going right then restarting at the next line from the left.
Unlike other brainfuck-based image esolangs, PocketFuck uses every bit in every pixel to store instructions, allowing it to be very space-efficient.
As every bit in the image counts, you must use lossless image formats, like PNG.
Example Programs
Cat Program
The cat program in this esolang is 1 pixel large
Enlarged view
Actual size
Hello World
Enlarged view
Actual size
XKCD Random Number
Enlarged view
Actual size
Nope. interpreter
Enlarged view
Actual size
Truth Machine
Enlarged view
Actual size
dbfi based brainfuck interpreter
Enlarged view
Actual size
Turing completeness
Since brainfuck is Turing complete, this esolang is also Turing complete.
Interpreters
The following is the official interpreter in Python, which also provides conversion from and to brainfuck.
from PIL import Image
import numpy as np
import sys
def bf(code):
s1=[]
s2=[]
matches={}
tape=[0]*1000000
for i,j in enumerate(code):
if j=='[':
s1.append(i)
if j==']':
m=s1.pop()
matches[m]=i
matches[i]=m
cp=0
p=0
while cp<len(code):
if code[cp]=='+':
tape[p]=(tape[p]+1)%256
if code[cp]=='-':
tape[p]=(tape[p]-1)%256
if code[cp]==',':
ch=sys.stdin.read(1)
tape[p]=(ord(ch) if ch else 0)%256
if code[cp]=='.':
print(chr(tape[p]),end='')
if code[cp]=='<':
p-=1
if code[cp]=='>':
p+=1
if code[cp]=='[':
if not tape[p]:
cp=matches[cp]
if code[cp]==']':
if tape[p]:
cp=matches[cp]
cp+=1
def bf2pf(bf):
f='+-><,.[]'
s=''
for i in bf:
s+='{:03b}'.format(f.index(i))
s=s+'0'*((-len(s))%24)
pixels=[]
for i in range(len(s)//24):
pixels.append([int(s[i*24:i*24+8],2),int(s[i*24+8:i*24+16],2),int(s[i*24+16:i*24+24],2)])
return Image.fromarray(np.array([pixels],dtype=np.uint8))
def pf2bf(pf):
prog=''
tmp=''
if pf.mode!='RGB':
print('PocketFuck only supports RGB images')
return ''
dat=pf.tobytes()
for i in dat:
tmp+='{:08b}'.format(i)
for i in range(len(tmp)//3):
prog+='+-><,.[]'[int(tmp[i*3:i*3+3],2)]
return prog
if __name__=='__main__':
bf(pf2bf(Image.open(sys.argv[1])))
It requires the Python Imaging Library and NumPy.