74 lines
2.0 KiB
Scheme
74 lines
2.0 KiB
Scheme
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#!/usr/bin/guile
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!#
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(use-modules (ice-9 rdelim)
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(ice-9 textual-ports))
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(define *channel* "#bots")
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(define (scdr lst)
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"Safe CDR which will return the empty list if it is passed the empty list instead of throwing an error."
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(if (null? lst)
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lst
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(cdr lst)))
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(define (slist-ref lst index)
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"Safe list-ref, see scdr"
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(if (< (length lst) (+ index 1))
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'()
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(list-ref lst index)))
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(define (slist-tail lst index)
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"Safe list-tail, see scdr"
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(if (< (length lst) (+ index 1))
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'()
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(list-tail lst index)))
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(define (make-connection host port)
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"Connect to irc server on host:port, returns a socket for reading and writing."
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(let* ((sock (socket PF_INET SOCK_STREAM 0))
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(con (connect sock
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AF_INET
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(car (vector-ref (gethost host) 4))
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port)))
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sock))
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(define (send-nick stream)
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(put-string stream "NICK fezbot\r\n"))
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(define (send-user stream)
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(put-string stream "USER fezbot 0.0.0.0 fezbot :Fez Bottingson\r\n"))
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(define (join-channel stream)
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(put-string stream (string-append "JOIN " *channel* "\r\n")))
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(define (send-message stream chn msg)
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(put-string stream (string-append "PRIVMSG " chn " :" msg "\r\n")))
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(define (send-action stream chn action)
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(put-string stream (string-append "PRIVMSG " chn " :\x01ACTION " action "\x01\r\n")))
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(define (main-loop stream)
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(let* ((inl (read-line stream))
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(data (string-tokenize inl)))
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(display data)
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(newline)
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(cond
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((equal? (car data) "PING")
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(send-message stream *channel* "PONG :foo"))
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((equal? ":hello" (slist-ref data 3))
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(send-message stream *channel* "hello, world"))
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((and (= 7 (length data))
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(equal? (list-tail data 4) '("ACTION" "shoots" "fezbot")))
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(send-action stream *channel* "dies")
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(close-port stream)
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(exit)))
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(main-loop stream)))
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(let* ((io (make-connection "127.0.0.1" 6667)))
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(send-nick io)
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(send-user io)
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(join-channel io)
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(main-loop io))
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