45 lines
1.5 KiB
Plaintext
45 lines
1.5 KiB
Plaintext
;;;;
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;;;; f i l e e v e n t . s t k -- Implement the Tk fileevent commeand
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;;;; in term of when-port-{read|writ}able
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;;;; For backward compatibility ...
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;;;;
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;;;;
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;;;; Copyright © 1993-1999 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
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;;;;
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;;;; Permission to use, copy, modify, distribute,and license this
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;;;; software and its documentation for any purpose is hereby granted,
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;;;; provided that existing copyright notices are retained in all
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;;;; copies and that this notice is included verbatim in any
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;;;; distributions. No written agreement, license, or royalty fee is
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;;;; required for any of the authorized uses.
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;;;; This software is provided ``AS IS'' without express or implied
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;;;; warranty.
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;;;;
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;;;; Author: Erick Gallesio [eg@unice.fr]
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;;;; Creation date: 16-Jun-1996 22:37
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;;;; Last file update: 3-Sep-1999 19:51 (eg)
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(select-module Tk)
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(define (fileevent file mode . script)
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(define (err)
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(error "fileeevent: bad mode specification ~S.\n(Note: fileevent is obsolete; use when-port-readable or when-port-writable)" mode))
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(let ((smode (& mode))
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(fct #f))
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(cond
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((equal? smode "readable") (set! fct when-port-readable))
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((equal? smode "writable") (set! fct when-port-writable))
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(ELSE (err)))
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(if (null? script)
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(fct file)
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(let ((s (car script)))
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(cond
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((procedure? s) (fct file s))
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((string? s) (if (string=? s "") (fct file #f) (err)))
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(ELSE (err)))))))
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(define Tk:fileevent fileevent)
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