Commit | Line | Data |
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55535639 | 1 | ;;; kermit.el --- additions to shell mode for use with kermit |
282d89c0 | 2 | |
aaef169d TTN |
3 | ;; Copyright (C) 1988, 2002, 2003, 2004, 2005, |
4 | ;; 2006 Free Software Foundation, Inc. | |
3a801d0c | 5 | |
282d89c0 | 6 | ;; Author: Jeff Norden <jeff@colgate.csnet> |
4228277d | 7 | ;; Maintainer: FSF |
282d89c0 | 8 | ;; Created: 15 Feb 1988 |
e41b2db1 | 9 | ;; Keywords: comm |
0af017e9 | 10 | |
11 | ;; This file is part of GNU Emacs. | |
12 | ||
13 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
14 | ;; it under the terms of the GNU General Public License as published by | |
e5167999 | 15 | ;; the Free Software Foundation; either version 2, or (at your option) |
0af017e9 | 16 | ;; any later version. |
17 | ||
18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;; GNU General Public License for more details. | |
22 | ||
23 | ;; You should have received a copy of the GNU General Public License | |
b578f267 | 24 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
086add15 LK |
25 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
26 | ;; Boston, MA 02110-1301, USA. | |
0af017e9 | 27 | |
e41b2db1 | 28 | ;;; Commentary: |
0af017e9 | 29 | |
30 | ;; I'm not sure, but I think somebody asked about running kermit under shell | |
31 | ;; mode a while ago. Anyway, here is some code that I find useful. The result | |
32 | ;; is that I can log onto machines with primitive operating systems (VMS and | |
33 | ;; ATT system V :-), and still have the features of shell-mode available for | |
34 | ;; command history, etc. It's also handy to be able to run a file transfer in | |
35 | ;; an emacs window. The transfer is in the "background", but you can also | |
36 | ;; monitor or stop it easily. | |
37 | ||
38 | ;; The ^\ key is bound to a function for sending escape sequences to kermit, | |
39 | ;; and ^C^Q can be used to send any control characters needed thru to the | |
40 | ;; system you connect to. A more serious problem is that some brain-dead | |
41 | ;; systems will not recognize a ^J as an end-of-line character. So LFD is | |
42 | ;; bound to a new function which acts just like CR usually does in shell-mode, | |
eb8c3be9 | 43 | ;; but a ^M is sent as an end-of-line. Functions are also provided to swap the |
0af017e9 | 44 | ;; bindings of CR and LFD. I've also included a filter which will clean out |
45 | ;; any ^M's or ^@'s that get typed at you, but I don't really recommend it. | |
46 | ;; There doesn't seem to be an acceptably fast way to do this via emacs-lisp. | |
47 | ;; Invoking kermit by the command " kermit | tr -d '\015' " seems to work | |
48 | ;; better (on my system anyway). | |
49 | ||
50 | ;; Here's how I've been using this setup. We have several machines connected | |
51 | ;; thru a fairly stupid terminal switch. If I want to connect to unix system, | |
52 | ;; then I use the LFD key to talk to the switch, and ignore any ^M's in the | |
53 | ;; buffer, and do a " stty -echo nl " after I log in. Then the only real | |
eb8c3be9 | 54 | ;; difference from being in local shell-mode is that you need to type |
0af017e9 | 55 | ;; ^C^Q^C to send an interrupt, and ^C^Q^Z for a stop signal, etc. (since ^C^C |
56 | ;; just generates a local stop signal, which kermit ignores). | |
57 | ;; To connect to a VMS system, I use a shell script to invoke kermit thru the | |
f1180544 | 58 | ;; tr filter, do "M-X kermit-send-cr", and then tell VMS that I'm on a |
e41b2db1 | 59 | ;; half-duplex terminal. |
0af017e9 | 60 | |
61 | ;; Some caveats: | |
62 | ;; 1) Kermit under shell mode is a real pain if you don't have pty's. I | |
63 | ;; recently discovered this on our 3b2/400. When kermit can't find a tty, it | |
64 | ;; assumes it is supposed to be in remote mode. So the simple command "kermit" | |
65 | ;; won't work in shell mode on such a system. You can get around this by using | |
66 | ;; the -c (connect) command line option, which means you also have to specify a | |
67 | ;; line and baud on the command line, as in "kermit -l /dev/tty53 -b 9600 -c". | |
68 | ;; However, this will cause kermit to exit when the connection is closed. So | |
69 | ;; in order to do a file transfer, you have to think ahead and and add -r | |
70 | ;; (receive) to the command line. This means that you can't use the server | |
71 | ;; feature. The only fix I can see is to muck around with the source code for | |
eb8c3be9 | 72 | ;; kermit, although this probably wouldn't be too hard. What is needed is an |
0af017e9 | 73 | ;; option to force kermit to be local, to use stdin and stdout for interactive |
74 | ;; speech, and to forget about cbreak mode. | |
75 | ||
76 | ;; Please let me know if any bugs turn up. | |
77 | ;; Feb 1988, Jeff Norden - jeff@colgate.csnet | |
78 | ||
e5167999 ER |
79 | ;;; Code: |
80 | ||
282d89c0 ER |
81 | (require 'shell) |
82 | ||
0af017e9 | 83 | (defvar kermit-esc-char "\C-\\" "*Kermit's escape char") |
84 | ||
85 | (defun kermit-esc () | |
86 | "For sending escape sequences to a kermit running in shell mode." | |
87 | (interactive) | |
f1180544 | 88 | (process-send-string |
0af017e9 | 89 | (get-buffer-process (current-buffer)) |
90 | (concat kermit-esc-char (char-to-string (read-char))))) | |
91 | ||
92 | (defun kermit-send-char () | |
93 | "Send an arbitrary character to a program in shell mode." | |
94 | (interactive) | |
f1180544 | 95 | (process-send-string |
0af017e9 | 96 | (get-buffer-process (current-buffer)) |
97 | (char-to-string (read-char)))) | |
98 | ||
99 | (define-key shell-mode-map "\C-\\" 'kermit-esc) | |
100 | (define-key shell-mode-map "\C-c\C-q" 'kermit-send-char) | |
101 | ;; extra bindings for folks suffering form ^S/^Q braindamage: | |
102 | (define-key shell-mode-map "\C-c\\" 'kermit-esc) | |
103 | ||
104 | (defun kermit-send-input-cr () | |
105 | "Like \\[comint-send-input] but end the line with carriage-return." | |
106 | (interactive) | |
e8a57935 JB |
107 | (comint-send-input) |
108 | (comint-send-string (get-buffer-process (current-buffer)) "\r")) | |
0af017e9 | 109 | |
110 | ;; This is backwards of what makes sense, but ... | |
111 | (define-key shell-mode-map "\n" 'kermit-send-input-cr) | |
112 | ||
113 | (defun kermit-default-cr () | |
114 | "Make RETURN end the line with carriage-return and LFD end it with a newline. | |
115 | This is useful for talking to other systems on which carriage-return | |
116 | is the normal way to end a line." | |
117 | (interactive) | |
118 | (define-key shell-mode-map "\r" 'kermit-send-input-cr) | |
119 | (define-key shell-mode-map "\n" 'comint-send-input)) | |
120 | ||
121 | (defun kermit-default-nl () | |
122 | "Make RETURN end the line with a newline char. This is the default state. | |
123 | In this state, use LFD to send a line and end it with a carriage-return." | |
124 | (interactive) | |
125 | (define-key shell-mode-map "\n" 'kermit-send-input-cr) | |
126 | (define-key shell-mode-map "\r" 'comint-send-input)) | |
127 | ||
128 | (defun kermit-clean-filter (proc str) | |
129 | "Strip ^M and ^@ characters from process output." | |
130 | (save-excursion | |
131 | (let ((beg (process-mark proc))) | |
132 | (set-buffer (process-buffer proc)) | |
133 | (goto-char beg) | |
134 | (insert-before-markers str) | |
e8a57935 | 135 | (while (re-search-backward "[\r\C-a]+" beg t) |
0af017e9 | 136 | (replace-match ""))))) |
137 | ||
138 | (defun kermit-clean-on () | |
e8a57935 | 139 | "Delete all null characters and ^M's from the kermit output. |
0af017e9 | 140 | Note that another (perhaps better) way to do this is to use the |
94074b19 | 141 | command `kermit | tr -d '\\015''." |
0af017e9 | 142 | (interactive) |
143 | (set-process-filter (get-buffer-process (current-buffer)) | |
144 | 'kermit-clean-filter)) | |
145 | ||
146 | (defun kermit-clean-off () | |
147 | "Cancel a previous kermit-clean-shell-on command." | |
148 | (interactive) | |
149 | (set-process-filter (get-buffer-process (current-buffer)) nil)) | |
150 | ||
896546cd RS |
151 | (provide 'kermit) |
152 | ||
ab5796a9 | 153 | ;;; arch-tag: 6633215d-6c47-4e66-9f27-16fba02a8dce |
282d89c0 | 154 | ;;; kermit.el ends here |