Beginning of irc system

diff --git a/demos/irc.scm b/demos/irc.scm
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+#!/usr/bin/guile \
+-e main -s
+!#
+
+;; Copyright (C) 2015 Christopher Allan Webber <cwebber@dustycloud.org>
+
+;; This library is free software; you can redistribute it and/or
+;; modify it under the terms of the GNU Lesser General Public
+;; License as published by the Free Software Foundation; either
+;; version 3 of the License, or (at your option) any later version.
+;;
+;; This library is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;; Lesser General Public License for more details.
+;;
+;; You should have received a copy of the GNU Lesser General Public
+;; License along with this library; if not, write to the Free Software
+;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+;; 02110-1301 USA
+
+(use-modules (eightsync repl)
+             (eightsync agenda)
+             (ice-9 getopt-long)
+             (ice-9 q)
+             (ice-9 match))
+
+\f
+;;; Network stuff
+;;; =============
+
+(define default-irc-port 6665)
+
+(define* (irc-socket-setup hostname #:optional (inet-port default-irc-port))
+  (let ((s (socket PF_INET SOCK_STREAM 0))
+        (ip-address (inet-ntoa (car (hostent:addr-list (gethost hostname))))))
+    (connect s AF_INET
+             (inet-pton AF_INET ip-address)
+             inet-port)
+    s))
+
+(define (install-socket socket handler)
+  (display "Installing socket...\n")   ; debugging :)
+  (make-port-request socket #:read handler))
+
+(define (handle-line socket line)
+  (display line)
+  (newline))
+
+(define (make-simple-irc-handler handle-line)
+  (let ((buffer '()))
+    (define (reset-buffer)
+      (set! buffer '()))
+    (define (should-read-char socket)
+      (and (char-ready? socket) (not (eof-object? (peek-char socket)))))
+    (define (irc-handler socket)
+      (while (should-read-char socket)
+        (set! buffer (cons (read-char socket) buffer))
+        (match buffer
+          ((#\newline #\return (? char? line-chars) ...)
+           (%sync (%run (handle-line
+                         socket
+                         (list->string (reverse line-chars)))))
+           ;; reset buffer
+           (set! buffer '()))
+          (_ #f))))
+    irc-handler))
+
+(define* (queue-and-start-irc-agenda! agenda socket #:key
+                                      (inet-port default-irc-port)
+                                      (handler (make-simple-irc-handler handle-line)))
+  (dynamic-wind
+    (lambda () #f)
+    (lambda ()
+      (enq! (agenda-queue agenda) (wrap (install-socket socket handler)))
+      (start-agenda agenda))
+    (lambda ()
+      (display "Cleaning up...\n")
+      (close socket))))
+
+
+\f
+;;; CLI
+;;; ===
+
+(define option-spec
+  `((server (single-char #\s) (required? #t) (value #t))
+    (port (single-char #\p)
+          (value #t)
+          (predicate
+           ,(lambda (s)
+              (if (string->number s) #t #f))))
+    (username (single-char #\u) (required? #t) (value #t))
+    (listen)))
+
+(define (main args)
+  (let* ((options (getopt-long args option-spec))
+         (server (option-ref options 'server #f))
+         (port (or (option-ref options 'port #f)
+                   default-irc-port))
+         (username (option-ref options 'username #f))
+         (listen (option-ref options 'listen #f)))
+    (display `((server ,server) (port ,port) (username ,username)
+               (listen ,listen)))
+    (newline)))