brnfck

A compressed brainfuck interpreter for use in code golf.

How?

1. Each command in the program is converted to a respective octal digit.
2. This octal is padded with enough of the [ digit to represent a hex number with an even number of digits. The [ characters can just be removed later, as an [ will never be at the end of a program.
3. This hex is the new data and is read from or written to a file.

How to use

To encode a standard brainfuck file:

python brnfck.py encode infile.bf outfile.bk

The brnfck interpreter comes with a lot of different options to choose from, but to execute a file with the default settings invoke:

python brnfuck.py interpret file.bk

Arguments

flag	meaning
[-i | --user-input] USER_INPUT	the input for the program
[-u | --upper] UPPER	the upper bound for the value the cells can hold; default is unbounded
[-l | --lower] LOWER	the lower bound for the value the cells can hold; default is unbounded (negatively)
[-d | --default] DEFAULT	the default value that cells hold; 0 by default
[-e | --eof] EOF	the value to use when no more input can be taken
[-w | --non-wrapping]	disables the wrapping of data values in cells
[-c | --non-encoded]	interprets a non-encoded file

Effectiveness

Please let me know of any other programs / dialects that I can compare here

Comparison

Cat - 5 bytes

.[.,]

language	bytes output
brnfck	2
CompressedFuck	4

Hello, World! - 72 bytes

+[-->-[>>+>-----<<]<--<---]>-.>>>+.>>..+++[.>]<<<<.+++.------.<<-.>>>>+.

language	bytes output
brnfck	40
CompressedFck	42

Sierpinski Triangle - 211 bytes

>++++[<++++++++>-]>++++++++[>++++<-]>>++>>>+>>>+<<<<<<<<<<[-[->+<]>[-<+>>>.<<]>>>[[->++++++++[>++++<-]>.<<[->+<]+>[->++++++++++<<+>]>.[-]>]]+<<<[-[->+<]+>[-<+>>>-[->+<]++>[-<->]<<<]<<<<]++++++++++.+++.[-]<]+++++

language	bytes output
brnfck	79
CompressedFck	108

Contributing

Please feel free to contribute to this project (create issues/fixes etc.) especially if you can compress the files more.