rbr4@uhura.cc.rochester.edu (Roland Roberts) (08/16/89)
Below is a copy of the file vmsproc.el. To get VMS dired to work you
will need my corrections to dired.el (already sent out), vmsproc.el
(this file), and vms-patch.el (should arrive about the same time as
this). Put them in the [lisp] directory and byte-compile them.
roland
--- Cut here ---
;; Run asynchronous VMS subprocesses under Emacs
;; Copyright (C) 1986 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY. No author or distributor
;; accepts responsibility to anyone for the consequences of using it
;; or for whether it serves any particular purpose or works at all,
;; unless he says so in writing. Refer to the GNU Emacs General Public
;; License for full details.
;; Everyone is granted permission to copy, modify and redistribute
;; GNU Emacs, but only under the conditions described in the
;; GNU Emacs General Public License. A copy of this license is
;; supposed to have been given to you along with GNU Emacs so you
;; can know your rights and responsibilities. It should be in a
;; file named COPYING. Among other things, the copyright notice
;; and this notice must be preserved on all copies.
;; Written by Mukesh Prasad.
(defvar display-subprocess-window nil
"If non-nil, the suprocess window is displayed whenever input is received.")
(defvar command-prefix-string "$ "
"String to insert to distinguish commands entered by user.")
(defvar subprocess-running nil)
(defvar command-mode-map nil)
(if command-mode-map
nil
(setq command-mode-map (make-sparse-keymap))
(define-key command-mode-map "\C-m" 'command-send-input)
(define-key command-mode-map "\C-u" 'command-kill-line))
(defun subprocess-input (name str)
"Handles input from a subprocess. Called by Emacs."
(if display-subprocess-window
(display-buffer subprocess-buf))
(let ((old-buffer (current-buffer)))
(set-buffer subprocess-buf)
(goto-char (point-max))
(insert str)
(insert ?\n)
(set-buffer old-buffer)))
(defun subprocess-exit (name)
"Called by Emacs upon subprocess exit."
(setq subprocess-running nil))
(defun start-subprocess ()
"Spawns an asynchronous subprocess with output redirected to
the buffer *COMMAND*. Within this buffer, use C-m to send
the last line to the subprocess or to bring another line to
the end."
(if subprocess-running
(return t))
(setq subprocess-buf (get-buffer-create "*COMMAND*"))
(save-excursion
(set-buffer subprocess-buf)
(use-local-map command-mode-map))
(setq subprocess-running (spawn-subprocess 1 'subprocess-input
'subprocess-exit))
;; Initialize subprocess so it doesn't panic and die upon
;; encountering the first error.
(and subprocess-running
(send-command-to-subprocess 1 "ON SEVERE_ERROR THEN CONTINUE")))
(defvar subprocess-command-to-buffer-tmpdir "SYS$SCRATCH:"
"*Put temporary files from subprocess-command-to-buffer here.")
(defun subprocess-command-to-buffer (command buffer)
"Execute command and redirect output into buffer.
BUGS: only the output up to the end of the first image activation is trapped."
(if (not subprocess-running)
(start-subprocess))
(save-excursion
(set-buffer buffer)
(let ((output-filename
(concat subprocess-command-to-buffer-tmpdir
"OUTPUT-FOR-" (getenv "USER") ".LISTING")))
(while (file-attributes output-filename)
(delete-file output-filename))
(send-command-to-subprocess 1 (concat "DEFINE/USER SYS$OUTPUT "
output-filename "-NEW"))
(send-command-to-subprocess 1 command)
(send-command-to-subprocess 1 (concat "RENAME " output-filename
"-NEW " output-filename))
(while (not (file-attributes output-filename))
(sleep-for 2))
(insert-file output-filename))))
(defun subprocess-command ()
"Starts asynchronous subprocess if not running and switches to its window."
(interactive)
(if (not subprocess-running)
(start-subprocess))
(and subprocess-running
(progn (pop-to-buffer subprocess-buf) (goto-char (point-max)))))
(defun command-send-input ()
"If at last line of buffer, sends the current line to
the spawned subprocess. Otherwise brings back current
line to the last line for resubmission."
(interactive)
(beginning-of-line)
(let ((current-line (buffer-substring (point)
(progn (end-of-line) (point)))))
(if (eobp)
(progn
(if (not subprocess-running)
(start-subprocess))
(if subprocess-running
(progn
(beginning-of-line)
(send-command-to-subprocess 1 current-line)
(if command-prefix-string
(progn (beginning-of-line) (insert command-prefix-string)))
(next-line 1))))
;; else -- if not at last line in buffer
(end-of-buffer)
(backward-char)
(next-line 1)
(if (string-equal command-prefix-string
(substring current-line 0 (length command-prefix-string)))
(insert (substring current-line (length command-prefix-string)))
(insert current-line)))))
(defun command-kill-line()
"Kills the current line. Used in command mode."
(interactive)
(beginning-of-line)
(kill-line))
(define-key esc-map "$" 'subprocess-command)
--
Roland Roberts BITNET: roberts@uornsrl
Nuclear Structure Research Lab INTERNET: rbr4@uhura.cc.rochester.edu
271 East River Road UUCP: rochester!ur-cc!uhura!rbr4
Rochester, NY 14267 AT&T: (716) 275-8962