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bf - yet another Brainfuck interpreter


bf [-h] [options] <filename>


bf ('Yet another Brainfuck interpreter') is a simple interpreter for the esoteric
Brainfuck language.


Specify the number num of the last cell you are allowed to use in your Brainfuck

So if you use -c0 (or just -c), you'll have one cell (one byte in memory) to use on
your tape. Brainfuck interpreter by Urban Mueller used an array of 30000 bytes
Our default value is 9999. Usually you need less.

-i Output Brainfuck code input to stderr.

This feature is useful if you can't find out why some Brainfuck code doesn't work
the way it should e.g. ignored loops, or a Brainfuck character within a comment.

Note: Up to 32 +, -, < and > are summarized and displayed as only one. This feature
was introduced in version 20040423.

-n Some Brainfuck contests specify a 0 byte as End Of Input. So -n translates a \n
byte input into a 0 byte input. Disadvantage: the input can only consist of one

-w Disallow byte wrap-around. This causes errors if you try to decrement ('-') a 0x00
byte or to increment ('+') a 0xFF byte.

This feature is useful if you want to take part in Brainfuck contests where such
wrapping-around is disallowed.
By default (without -w), incrementing 0xFF results in 0x00 and decrementing 0x00
results in 0xFF.

Specify input mode. <mode> can be:

0 (zero) Normal input using getchar(3).
1 Single-char input. You won't see what you type.
2 Single-char input. You will see what you type.
3 The same as 1, but doesn't allow escape characters if compiled with slang.
4 The same as 2, but doesn't allow escape characters, if compiled with slang.

Default is 0. (In some versions the default was 4.)


It's not allowed to '<' below the first cell.

It's not allowed to '>' beyond the last cell.


Stephan Beyer <[email protected]>

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