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1.1 root 1: ;; Run subshell under Emacs
2: ;; Copyright (C) 1985 Richard M. Stallman.
3:
4: ;; This file is part of GNU Emacs.
5:
6: ;; GNU Emacs is distributed in the hope that it will be useful,
7: ;; but WITHOUT ANY WARRANTY. No author or distributor
8: ;; accepts responsibility to anyone for the consequences of using it
9: ;; or for whether it serves any particular purpose or works at all,
10: ;; unless he says so in writing. Refer to the GNU Emacs General Public
11: ;; License for full details.
12:
13: ;; Everyone is granted permission to copy, modify and redistribute
14: ;; GNU Emacs, but only under the conditions described in the
15: ;; GNU Emacs General Public License. A copy of this license is
16: ;; supposed to have been given to you along with GNU Emacs so you
17: ;; can know your rights and responsibilities. It should be in a
18: ;; file named COPYING. Among other things, the copyright notice
19: ;; and this notice must be preserved on all copies.
20:
21:
22: (provide 'shell)
23:
24: (defvar last-input-start nil
25: "In a shell-mode buffer, marker for start of last unit of input.")
26: (defvar last-input-end nil
27: "In a shell-mode buffer, marker for start of last unit of input.")
28:
29: (defvar shell-mode-map nil)
30:
31: (defvar shell-directory-stack nil
32: "List of directories saved by pushd in this buffer's shell.")
33:
34: (defvar shell-popd-regexp "popd"
35: "*Regexp to match subshell commands equivalent to popd.")
36:
37: (defvar shell-pushd-regexp "pushd"
38: "*Regexp to match subshell commands equivalent to pushd.")
39:
40: (defvar shell-cd-regexp "cd"
41: "*Regexp to match subshell commands equivalent to cd.")
42:
43: (defvar explicit-shell-file-name nil
44: "*If non-nil, is file name to use for explicitly requested inferior shell.")
45:
46: ;In loaddefs.el now.
47: ;(defconst shell-prompt-pattern
48: ; "^[^#$%>]*[#$%>] *"
49: ; "*Regexp used by Newline command to match subshell prompts.
50: ;Anything from beginning of line up to the end of what this pattern matches
51: ;is deemed to be prompt, and is not reexecuted.")
52:
53: (defun shell-mode ()
54: "Major mode for interacting with an inferior shell.
55: Shell name is same as buffer name, sans the asterisks.
56: Return at end of buffer sends line as input.
57: Return not at end copies rest of line to end and sends it.
58:
59: The following commands imitate the usual Unix interrupt and
60: editing control characters:
61: \\{shell-mode-map}
62:
63: Entry to this mode calls the value of shell-mode-hook with no args,
64: if that value is non-nil.
65:
66: cd, pushd and popd commands given to the shell are watched
67: by Emacs to keep this buffer's default directory
68: the same as the shell's working directory.
69: Variables shell-cd-regexp, shell-pushd-regexp and shell-popd-regexp
70: are used to match these command names.
71:
72: You can send text to the shell (or its subjobs) from other buffers
73: using the commands send-region, send-string and lisp-send-defun."
74: (interactive)
75: (kill-all-local-variables)
76: (setq major-mode 'shell-mode)
77: (setq mode-name "Shell")
78: (setq mode-line-format
79: "--%1*%1*-Emacs: %17b %M %[(%m: %s)%]----%3p--%-")
80: (use-local-map shell-mode-map)
81: (make-local-variable 'shell-directory-stack)
82: (setq shell-directory-stack nil)
83: (make-local-variable 'last-input-start)
84: (setq last-input-start (make-marker))
85: (make-local-variable 'last-input-end)
86: (setq last-input-end (make-marker))
87: (run-hooks 'shell-mode-hook))
88:
89: (if shell-mode-map
90: nil
91: (setq shell-mode-map (make-sparse-keymap))
92: (define-key shell-mode-map "\C-m" 'shell-send-input)
93: (define-key shell-mode-map "\C-c\C-d" 'shell-send-eof)
94: (define-key shell-mode-map "\C-c\C-u" 'kill-shell-input)
95: (define-key shell-mode-map "\C-c\C-w" 'backward-kill-word)
96: (define-key shell-mode-map "\C-c\C-c" 'interrupt-shell-subjob)
97: (define-key shell-mode-map "\C-c\C-z" 'stop-shell-subjob)
98: (define-key shell-mode-map "\C-c\C-\\" 'quit-shell-subjob)
99: (define-key shell-mode-map "\C-c\C-o" 'kill-output-from-shell)
100: (define-key shell-mode-map "\C-c\C-r" 'show-output-from-shell)
101: (define-key shell-mode-map "\C-c\C-y" 'copy-last-shell-input))
102:
103: (defun shell ()
104: "Run an inferior shell, with I/O through buffer *shell*.
105: If buffer exists but shell process is not running, make new shell.
106: Program used comes from variable explicit-shell-file-name,
107: or (if that is nil) from the ESHELL environment variable,
108: or else from SHELL if there is no ESHELL.
109: If a file ~/.emacs_SHELLNAME exists, it is given as initial input
110: (Note that this may lose due to a timing error if the shell
111: discards input when it starts up.)
112: The buffer is put in shell-mode, giving commands for sending input
113: and controlling the subjobs of the shell. See shell-mode.
114: See also variable shell-prompt-pattern.
115:
116: Note that many people's .cshrc files unconditionally clear the prompt.
117: If yours does, you will probably want to change it."
118: (interactive)
119: (let* ((prog (or explicit-shell-file-name
120: (getenv "ESHELL")
121: (if (eq system-type 'hpux) "sh"
122: ;; On hpux people normally use csh,
123: ;; but the csh in hpux has stty sanity checking
124: ;; so it does not work under emacs.
125: (getenv "SHELL"))
126: "/bin/sh"))
127: (name (file-name-nondirectory prog)))
128: (switch-to-buffer
129: (make-shell "shell" prog
130: (if (file-exists-p (concat "~/.emacs_" name))
131: (concat "~/.emacs_" name))
132: "-i"))))
133:
134: (defun make-shell (name program &optional startfile &rest switches)
135: (let ((buffer (get-buffer-create (concat "*" name "*")))
136: proc status size)
137: (setq proc (get-buffer-process buffer))
138: (if proc
139: (setq status (process-status proc)))
140: (save-excursion
141: (set-buffer buffer)
142: ;; (setq size (buffer-size))
143: (if (memq status '(run stop))
144: nil
145: (if proc (delete-process proc))
146: (setq proc (apply 'start-process (append (list name buffer program) switches)))
147: (cond (startfile
148: ;;This is guaranteed to wait long enough
149: ;;but has bad results if the shell does not prompt at all
150: ;; (while (= size (buffer-size))
151: ;; (sleep-for 1))
152: ;;I hope 1 second is enough!
153: (sleep-for 1)
154: (goto-char (point-max))
155: (insert-file-contents startfile)
156: (setq startfile (buffer-substring (point) (point-max)))
157: (delete-region (point) (point-max))
158: (send-string proc startfile)))
159: (setq name (process-name proc)))
160: (goto-char (point-max))
161: (set-marker (process-mark proc) (point))
162: (shell-mode))
163: buffer))
164:
165: (defun shell-send-input ()
166: "Send input to subshell.
167: At end of buffer, sends all text after last output
168: as input to the subshell, including a newline inserted at the end.
169: Not at end, copies current line to the end of the buffer and sends it,
170: after first attempting to discard any prompt at the beginning of the line
171: by matching the regexp that is the value of shell-prompt-pattern if possible.
172: This regexp should start with \"^\"."
173: (interactive)
174: (end-of-line)
175: (if (eobp)
176: (progn
177: (move-marker last-input-start
178: (process-mark (get-buffer-process (current-buffer))))
179: (insert ?\n)
180: (move-marker last-input-end (point)))
181: (beginning-of-line)
182: (re-search-forward shell-prompt-pattern nil t)
183: (let ((copy (buffer-substring (point)
184: (progn (forward-line 1) (point)))))
185: (goto-char (point-max))
186: (move-marker last-input-start (point))
187: (insert copy)
188: (move-marker last-input-end (point))))
189: ;; Even if we get an error trying to hack the working directory,
190: ;; still send the input to the subshell.
191: (condition-case ()
192: (save-excursion
193: (goto-char last-input-start)
194: (cond ((and (looking-at shell-popd-regexp)
195: (memq (char-after (match-end 0)) '(?\; ?\n)))
196: (if shell-directory-stack
197: (progn
198: (cd (car shell-directory-stack))
199: (setq shell-directory-stack (cdr shell-directory-stack)))))
200: ((looking-at shell-pushd-regexp)
201: (cond ((memq (char-after (match-end 0)) '(?\; ?\n))
202: (if shell-directory-stack
203: (let ((old default-directory))
204: (cd (car shell-directory-stack))
205: (setq shell-directory-stack
206: (cons old (cdr shell-directory-stack))))))
207: ((memq (char-after (match-end 0)) '(?\ ?\t))
208: (let (dir)
209: (skip-chars-forward "^ ")
210: (skip-chars-forward " \t")
211: (if (file-directory-p
212: (setq dir
213: (expand-file-name
214: (substitute-in-file-name
215: (buffer-substring
216: (point)
217: (progn
218: (skip-chars-forward "^\n \t;")
219: (point)))))))
220: (progn
221: (setq shell-directory-stack
222: (cons default-directory shell-directory-stack))
223: (cd dir)))))))
224: ((looking-at shell-cd-regexp)
225: (cond ((memq (char-after (match-end 0)) '(?\; ?\n))
226: (cd (getenv "HOME")))
227: ((memq (char-after (match-end 0)) '(?\ ?\t))
228: (let (dir)
229: (forward-char 3)
230: (skip-chars-forward " \t")
231: (if (file-directory-p
232: (setq dir
233: (expand-file-name
234: (substitute-in-file-name
235: (buffer-substring
236: (point)
237: (progn
238: (skip-chars-forward "^\n \t;")
239: (point)))))))
240: (cd dir))))))))
241: (error nil))
242: (let ((process (get-buffer-process (current-buffer))))
243: (send-region process last-input-start last-input-end)
244: (set-marker (process-mark process) (point))))
245:
246: (defun shell-send-eof ()
247: "Send eof to subshell (or to the program running under it)."
248: (interactive)
249: (process-send-eof))
250:
251: (defun kill-output-from-shell ()
252: "Kill all output from shell since last input."
253: (interactive)
254: (goto-char (point-max))
255: (kill-region last-input-end (point))
256: (insert "> output flushed ***\n"))
257:
258: (defun show-output-from-shell ()
259: "Display start of this batch of shell output at top of window.
260: Also put cursor there."
261: (interactive)
262: (set-window-start (selected-window) last-input-end)
263: (goto-char last-input-end))
264:
265: (defun copy-last-shell-input ()
266: "Copy previous shell input, sans newline, and insert before point."
267: (interactive)
268: (insert (buffer-substring last-input-end last-input-start))
269: (delete-char -1))
270:
271: (defun interrupt-shell-subjob ()
272: "Interrupt this shell's current subjob."
273: (interactive)
274: (interrupt-process nil t))
275:
276: (defun kill-shell-subjob ()
277: "Send kill signal to this shell's current subjob."
278: (interactive)
279: (kill-process nil t))
280:
281: (defun quit-shell-subjob ()
282: "Send quit signal to this shell's current subjob."
283: (interactive)
284: (quit-process nil t))
285:
286: (defun stop-shell-subjob ()
287: "Stop this shell's current subjob."
288: (interactive)
289: (stop-process nil t))
290:
291: (defun kill-shell-input ()
292: "Kill all text since last stuff output by the shell or its subjobs."
293: (interactive)
294: (kill-region (process-mark (get-buffer-process (current-buffer)))
295: (point)))
296:
297: (defvar inferior-lisp-mode-map nil)
298: (if inferior-lisp-mode-map
299: nil
300: (setq inferior-lisp-mode-map (copy-alist shell-mode-map))
301: (lisp-mode-commands inferior-lisp-mode-map)
302: (define-key inferior-lisp-mode-map "\e\C-x" 'lisp-send-defun))
303:
304: (defun inferior-lisp-mode ()
305: "Major mode for interacting with an inferior Lisp process.
306:
307: The following commands are available:
308: \\{inferior-lisp-mode-map}
309:
310: Entry to this mode calls the value of lisp-mode-hook with no arguments,
311: if that value is non-nil. Likewise with the value of shell-mode-hook.
312: lisp-mode-hook is called after shell-mode-hook.
313:
314: You can send text to the inferior Lisp from other buffers
315: using the commands send-region, send-string and \\[lisp-send-defun].
316:
317: Commands:
318: Delete converts tabs to spaces as it moves back.
319: Tab indents for Lisp; with argument, shifts rest
320: of expression rigidly with the current line.
321: Meta-Control-Q does Tab on each line starting within following expression.
322: Paragraphs are separated only by blank lines. Semicolons start comments.
323:
324: Return at end of buffer sends line as input.
325: Return not at end copies rest of line to end and sends it.
326: C-d at end of buffer sends end-of-file as input.
327: C-d not at end or with arg deletes or kills characters.
328: C-u and C-w are kill commands, imitating normal Unix input editing.
329: C-c interrupts the shell or its current subjob if any.
330: C-z stops, likewise. C-\\ sends quit signal, likewise.
331:
332: C-x C-k deletes last batch of output from shell.
333: C-x C-v puts top of last batch of output at top of window."
334: (interactive)
335: (kill-all-local-variables)
336: (setq major-mode 'inferior-lisp-mode)
337: (setq mode-name "Inferior Lisp")
338: (setq mode-line-format
339: "--%1*%1*-Emacs: %17b %M %[(%m: %s)%]----%3p--%-")
340: (lisp-mode-variables)
341: (use-local-map inferior-lisp-mode-map)
342: (make-local-variable 'last-input-start)
343: (setq last-input-start (make-marker))
344: (make-local-variable 'last-input-end)
345: (setq last-input-end (make-marker))
346: (run-hooks 'shell-mode-hook 'lisp-mode-hook))
347:
348: (defun run-lisp ()
349: "Run an inferior Lisp process, input and output via buffer *lisp*."
350: (interactive)
351: (switch-to-buffer (make-shell "lisp" "lisp"))
352: (inferior-lisp-mode))
353:
354: (defun lisp-send-defun ()
355: "Send the current defun to the Lisp process made by M-x run-lisp."
356: (interactive)
357: (save-excursion
358: (end-of-defun)
359: (let ((end (point)))
360: (beginning-of-defun)
361: (send-region "lisp" (point) end)
362: (send-string "lisp" "\n"))))
363:
364: (defun lisp-send-defun-and-go ()
365: "Send the current defun to the inferior Lisp, and switch to *lisp* buffer."
366: (interactive)
367: (lisp-send-defun)
368: (switch-to-buffer "*lisp*"))
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