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irc-bot.bf
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Brainfuck IRC bot
* Comments use ; in place of periods or commas as punctuation
* Meant to operate on 8 bit unsigned memory
* Expects a good amount of memory; I use 0x10000 bytes; smaller is probably fine
* Expects stdin to block until data is available
* If you use netfuck; it'd be useful to know that debug mode outputs every character read from the remote to the console
Send NICK and USER
"NICK bfbot\r\nUSER bfbot a a :bfbot\r\n" (78 73 67 75 32 98 102 98 111 116 13 10 85 83 69 82 32 98 102 98 111 116 32 97 32 58 98 102 98 111 116)
++++++++++
[
N > +++++++
I > +++++++
C > ++++++
K > +++++++
> +++
b > +++++++++
f > ++++++++++
b > +++++++++
o > +++++++++++
t > +++++++++++
\r > +
\n > +
U > ++++++++
S > ++++++++
E > ++++++
R > ++++++++
> +++
b > +++++++++
f > ++++++++++
b > +++++++++
o > +++++++++++
t > +++++++++++
> +++
a > +++++++++
> +++
a > +++++++++
> +++
: > +++++
b > +++++++++
f > ++++++++++
b > +++++++++
o > +++++++++++
t > +++++++++++
\r > +
\n > +
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<-
]
"NICK bfbot\r\nUSER bfbot a a :bfbot\r\n" (78 73 67 75 32 98 102 98 111 116 13 10 85 83 69 82 32 98 102 98 111 116 32 97 32 58 98 102 98 111 116)
N > ++++++++ .
I > +++ .
C > +++++++ .
K > +++++ .
> ++ .
b > ++++++++ .
f > ++ .
b > ++++++++ .
o > + .
t > ++++++ .
\r > +++ .
\n > .
U > +++++ .
S > +++ .
E > +++++++++ .
R > ++ .
> ++ .
b > ++++++++ .
f > ++ .
b > ++++++++ .
o > + .
t > ++++++ .
> ++ .
a > +++++++ .
> ++ .
a > +++++++ .
> ++ .
: > ++++++++ .
b > ++++++++ .
f > ++ .
b > ++++++++ .
o > + .
t > ++++++ .
\r > +++ .
\n > .
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< end of "NICK bfbot\r\nUSER bfbot a :bfbot\r\n"
>
cell #0: working cell for iteration and such
cell #1 stdin (pointer currently points here)
[
Messages come in like this: ":user PRIVMSG bfbot :message"
, Read out one character; see if it's a 'P' (80)
<[-] ++++++++++ [>--------<-] [-]+>
[ Handle NOT a ping
[-]+[,<[-]++++++++++[>---<-]>--] Loop until a space (32) is read
Check for P (80)
, <[-] ++++++++++ [ > -------- <- ] [- set working cell to 1]+ >
[ if (input != 'P')
[ , ---------- ] Read to \n (10); also zeroes cell
<->
]<[> if (input == 'P')
Check for 'R' (82) PRIVMSG
, <[-]++++++++++[>--------<-]>-- cell is zero if 'R' <[-]+>
[
Not 'R'
[ , ---------- ] Read to \n (10); also zeroes cell
<->]<[>
Handle PRIVMSG
Read remaining characters: I,V,M,S,G, ,
Check for channel/user message ('#' = 35)
, <[-]++++++++++ [>---<-]>----- <[-]+>
[
Handle user message
Read to space: <[-]> [,<++++++++++[>---<-]>--],
Check for 'J' 74
,<++++++++++[>-------<-]>---- <[-]+>
[
[-] (not J; ignore)
<->]<[>,
Write JOIN command 74 79 73 78 32 (user text) 13 10
<[-]++++++++++
>[-]>[-]>[-]>[-]>[-]<<<<<
[>+++++++ >+++++++ >+++++++ >+++++++ >+++ <<<<<-]
>++++.
>+++++++++.
>+++.
>++++++++.
>++.
<<<<<[-]>
Write user text:
<[-]+[>
,------------- Subtract \r<[-]>
[<+>+++++++++++++.[-]] Output if not \r
<
]>
Write \r\n
[-]++++++++++.+++.
<[-]]>
+[ , ---------- ]
<[-]>]<[>
Channel message
Read channel name into buffer (a zero on each side)
[-]>[-]+<
+[>,+
Copy value into next two cells for comparison
>[-]>[-]<<
[>+>+<<-]>[<+>-]>
Pointer is at third cell; middle cell is zero; first cell and third cell are read value
Subtract space (32) using middle cell as working cell <++++++++++[>---<-]>---<+> (note: we subtract 33 because the whole buffer is incremented)
[<->[-]]
<[
Handle space
<[-]>
[-]]<
]
<-[<-]
, Read and discard
, Check for control character '$' 36
<[-]++++++++++[>---<-]>------<+>
[ [-]+[ , ---------- ] <->]
<[>
Send 'PRIVMSG #' 80 82 73 86 77 83 71 32 35 without screwing up the channel name buffer
[-]<[-]++++++++++[>++++++++<-]>.
[-]<[-]++++++++++[>++++++++<-]>++.
[-]<[-]++++++++++[>+++++++<-]>+++.
[-]<[-]++++++++++[>++++++++<-]>++++++.
[-]<[-]++++++++++[>+++++++<-]>+++++++.
[-]<[-]++++++++++[>++++++++<-]>+++.
[-]<[-]++++++++++[>+++++++<-]>+.
[-]<[-]++++++++++[>+++<-]>++.
[-]<[-]++++++++++[>+++<-]>+++++.
Send the channel name from our buffer
[-]>[.>]<[<]
Send a space; then a colon (58)
[-]<[-]++++++++++[>+++<-]>++.
[-]<[-]++++++++++[>++++++<-]>--.
Finally; send the user's message
[-]+[ ,. ---------- ]
<[-]]>
<[-]]>
<[-]]>
<[-]]>[-]+
<[-]>[-]]<[
Handle PING
,,, Read out "ING "
Write PONG 80 79 78 71 32
[-]++++++++++[
>++++++++
>+++++++
>+++++++
>+++++++
>+++
<<<<<-
]
>.
>+++++++++.
>++++++++.
>+.
>++.
<<<<<
[-]+[ ,. ---------- ] Write out the PING response
[-]]>+
]