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- (herald transcript (env tsys))
-
- ;;; Copyright (c) 1985 Yale University
- ;;; Authors: N Adams, R Kelsey, D Kranz, J Philbin, J Rees.
- ;;; This material was developed by the T Project at the Yale University Computer
- ;;; Science Department. Permission to copy this software, to redistribute it,
- ;;; and to use it for any purpose is granted, subject to the following restric-
- ;;; tions and understandings.
- ;;; 1. Any copy made of this software must include this copyright notice in full.
- ;;; 2. Users of this software agree to make their best efforts (a) to return
- ;;; to the T Project at Yale any improvements or extensions that they make,
- ;;; so that these may be included in future releases; and (b) to inform
- ;;; the T Project of noteworthy uses of this software.
- ;;; 3. All materials developed as a consequence of the use of this software
- ;;; shall duly acknowledge such use, in accordance with the usual standards
- ;;; of acknowledging credit in academic research.
- ;;; 4. Yale has made no warrantee or representation that the operation of
- ;;; this software will be error-free, and Yale is under no obligation to
- ;;; provide any services, by way of maintenance, update, or otherwise.
- ;;; 5. In conjunction with products arising from the use of this material,
- ;;; there shall be no use of the name of the Yale University nor of any
- ;;; adaptation thereof in any advertising, promotional, or sales literature
- ;;; without prior written consent from Yale in each case.
- ;;;
-
- ;;; Transcript facility.
-
- ;++ This should be moved to the libraries section of the manual.
-
- (lset +transcript+ nil)
- (lset +standard-output+ nil)
- (lset +input-underflow+ nil)
-
- (define (transcript-on filename)
- (cond (+transcript+
- (format (standard-output)
- ";Transcript file ~a is already open.~%"
- (port-name +transcript+))
- nil)
- (else
- (set +transcript+ (open filename 'out))
- (format +transcript+ ";;; T transcript file ~a~%~%" filename)
- (set +input-underflow+ (iob-underflow (standard-input)))
- (set (iob-underflow (standard-input))
- (make-echo-underflow +transcript+))
- (set +standard-output+ (standard-output))
- (let ((b (make-broadcast-port (standard-output) +transcript+)))
- ;++ what a crock
- (set (standard-output) b)
- (set (terminal-output) b)
- (set (repl-output) b))
- 'ok)))
-
- (define (transcript-off)
- (cond (+transcript+
- (set (standard-output) +standard-output+)
- (set (terminal-output) +standard-output+)
- (set (repl-output) +standard-output+)
- (set (iob-underflow (standard-input)) +input-underflow+)
- (format +transcript+ "~&~%;;; End of transcript file~%")
- (close +transcript+)
- (set +transcript+ nil)
- (set +input-underflow+ nil)
- (set +standard-output+ nil)
- 'ok)
- (else nil)))
-
- (define (make-echo-underflow out-iob)
- (lambda (in-iob block?)
- (let ((cnt (%vm-read-buffer in-iob block?))
- (buf (iob-buffer in-iob)))
- (do ((i 0 (fx+ i 1)))
- ((fx>= i cnt))
- (vm-write-char out-iob (text-elt buf i))))))
-