#!/usr/local/bin/stk -f
;;;; s e r v e r  . s t k		-- A simple sever
;;;;
;;;; Copyright © 1993-1996 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
;;;; 
;;;; Permission to use, copy, and/or distribute this software and its
;;;; documentation for any purpose and without fee is hereby granted, provided
;;;; that both the above copyright notice and this permission notice appear in
;;;; all copies and derived works.  Fees for distribution or use of this
;;;; software or derived works may only be charged with express written
;;;; permission of the copyright holder.  
;;;; This software is provided ``as is'' without express or implied warranty.
;;;;
;;;; This software is a derivative work of other copyrighted softwares; the
;;;; copyright notices of these softwares are placed in the file COPYRIGHTS
;;;;
;;;;           Author: Erick Gallesio [eg@kaolin.unice.fr]
;;;;    Creation date:  4-Feb-1995 18:17
;;;; Last file update: 12-Feb-1995 11:57

(define s (make-server-socket))

(dynamic-wind 
 ;; Init: Launch an xterm with telnet running on the s listening port and connect
 (lambda ()
   (run-process "xterm" "-e" "telnet" "localhost" 
		(number->string (socket-port-number s)))
   (socket-accept-connection s)
   (format (socket-output s) "\nWelcome on the socket REPL.\n\n> ")
   (flush (socket-output s)))

 ;; Action: A toplevel like loop
 (lambda ()
   (let loop ()
     (format (socket-output s) "; Result: ~s\n> " (eval (read (socket-input s))))
     (flush (socket-output s))
     (loop)))

 ;; Termination: We go here when 
 ;;     a) an error occurs 
 ;;	b) connection is closed
 (lambda ()
   (format #t "Shutdown ......\n")
   (socket-shutdown s)))