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1.1 root 1: ;; Run subshell under Emacs
2: ;; Copyright (C) 1985, 1986, 1987, 1988 Free Software Foundation, Inc.
3:
4: ;; This file is part of GNU Emacs.
5:
6: ;; GNU Emacs is free software; you can redistribute it and/or modify
7: ;; it under the terms of the GNU General Public License as published by
8: ;; the Free Software Foundation; either version 1, or (at your option)
9: ;; any later version.
10:
11: ;; GNU Emacs is distributed in the hope that it will be useful,
12: ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13: ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: ;; GNU General Public License for more details.
15:
16: ;; You should have received a copy of the GNU General Public License
17: ;; along with GNU Emacs; see the file COPYING. If not, write to
18: ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
19:
20:
21: (provide 'shell)
22:
23: (defvar last-input-start nil
24: "In a shell-mode buffer, marker for start of last unit of input.")
25: (defvar last-input-end nil
26: "In a shell-mode buffer, marker for end of last unit of input.")
27:
28: (defvar shell-mode-map nil)
29:
30: (defvar shell-directory-stack nil
31: "List of directories saved by pushd in this buffer's shell.")
32:
33: (defvar shell-popd-regexp "popd"
34: "*Regexp to match subshell commands equivalent to popd.")
35:
36: (defvar shell-pushd-regexp "pushd"
37: "*Regexp to match subshell commands equivalent to pushd.")
38:
39: (defvar shell-cd-regexp "cd"
40: "*Regexp to match subshell commands equivalent to cd.")
41:
42: (defvar explicit-shell-file-name nil
43: "*If non-nil, is file name to use for explicitly requested inferior shell.")
44:
45: ;In loaddefs.el now.
46: ;(defconst shell-prompt-pattern
47: ; "^[^#$%>]*[#$%>] *"
48: ; "*Regexp used by Newline command to match subshell prompts.
49: ;Anything from beginning of line up to the end of what this pattern matches
50: ;is deemed to be prompt, and is not reexecuted.")
51:
52: (defun shell-mode ()
53: "Major mode for interacting with an inferior shell.
54: Shell name is same as buffer name, sans the asterisks.
55: Return at end of buffer sends line as input.
56: Return not at end copies rest of line to end and sends it.
57:
58: The following commands imitate the usual Unix interrupt and
59: editing control characters:
60: \\{shell-mode-map}
61:
62: Entry to this mode calls the value of shell-mode-hook with no args,
63: if that value is non-nil.
64:
65: cd, pushd and popd commands given to the shell are watched
66: by Emacs to keep this buffer's default directory
67: the same as the shell's working directory.
68: Variables shell-cd-regexp, shell-pushd-regexp and shell-popd-regexp
69: are used to match these command names.
70:
71: You can send text to the shell (or its subjobs) from other buffers
72: using the commands process-send-region, process-send-string
73: 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-process '(": %s"))
79: (use-local-map shell-mode-map)
80: (make-local-variable 'shell-directory-stack)
81: (setq shell-directory-stack nil)
82: (make-local-variable 'last-input-start)
83: (setq last-input-start (make-marker))
84: (make-local-variable 'last-input-end)
85: (setq last-input-end (make-marker))
86: (run-hooks 'shell-mode-hook))
87:
88: (if shell-mode-map
89: nil
90: (setq shell-mode-map (make-sparse-keymap))
91: (define-key shell-mode-map "\C-m" 'shell-send-input)
92: (define-key shell-mode-map "\C-c\C-d" 'shell-send-eof)
93: (define-key shell-mode-map "\C-c\C-u" 'kill-shell-input)
94: (define-key shell-mode-map "\C-c\C-w" 'backward-kill-word)
95: (define-key shell-mode-map "\C-c\C-c" 'interrupt-shell-subjob)
96: (define-key shell-mode-map "\C-c\C-z" 'stop-shell-subjob)
97: (define-key shell-mode-map "\C-c\C-\\" 'quit-shell-subjob)
98: (define-key shell-mode-map "\C-c\C-o" 'kill-output-from-shell)
99: (define-key shell-mode-map "\C-c\C-r" 'show-output-from-shell)
100: (define-key shell-mode-map "\C-c\C-y" 'copy-last-shell-input))
101:
102: (defvar explicit-csh-args
103: (if (eq system-type 'hpux)
104: ;; -T persuades HP's csh not to think it is smarter
105: ;; than us about what terminal modes to use.
106: '("-i" "-T")
107: '("-i"))
108: "Args passed to inferior shell by M-x shell, if the shell is csh.
109: Value is a list of strings, which may be nil.")
110:
111: (defun shell ()
112: "Run an inferior shell, with I/O through buffer *shell*.
113: If buffer exists but shell process is not running, make new shell.
114: Program used comes from variable explicit-shell-file-name,
115: or (if that is nil) from the ESHELL environment variable,
116: or else from SHELL if there is no ESHELL.
117: If a file ~/.emacs_SHELLNAME exists, it is given as initial input
118: (Note that this may lose due to a timing error if the shell
119: discards input when it starts up.)
120: The buffer is put in shell-mode, giving commands for sending input
121: and controlling the subjobs of the shell. See shell-mode.
122: See also variable shell-prompt-pattern.
123:
124: The shell file name (sans directories) is used to make a symbol name
125: such as `explicit-csh-arguments'. If that symbol is a variable,
126: its value is used as a list of arguments when invoking the shell.
127: Otherwise, one argument `-i' is passed to the shell.
128:
129: Note that many people's .cshrc files unconditionally clear the prompt.
130: If yours does, you will probably want to change it."
131: (interactive)
132: (let* ((prog (or explicit-shell-file-name
133: (getenv "ESHELL")
134: (getenv "SHELL")
135: "/bin/sh"))
136: (name (file-name-nondirectory prog)))
137: (switch-to-buffer
138: (apply 'make-shell "shell" prog
139: (if (file-exists-p (concat "~/.emacs_" name))
140: (concat "~/.emacs_" name))
141: (let ((symbol (intern-soft (concat "explicit-" name "-args"))))
142: (if (and symbol (boundp symbol))
143: (symbol-value symbol)
144: '("-i")))))))
145:
146: (defun make-shell (name program &optional startfile &rest switches)
147: (let ((buffer (get-buffer-create (concat "*" name "*")))
148: proc status size)
149: (setq proc (get-buffer-process buffer))
150: (if proc (setq status (process-status proc)))
151: (save-excursion
152: (set-buffer buffer)
153: ;; (setq size (buffer-size))
154: (if (memq status '(run stop))
155: nil
156: (if proc (delete-process proc))
157: (setq proc (apply 'start-process name buffer
158: (concat exec-directory "env")
159: (format "TERMCAP=emacs:co#%d:tc=unknown:"
160: (screen-width))
161: "TERM=emacs"
162: "EMACS=t"
163: "-"
164: (or program explicit-shell-file-name
165: (getenv "ESHELL")
166: (getenv "SHELL")
167: "/bin/sh")
168: switches))
169: (cond (startfile
170: ;;This is guaranteed to wait long enough
171: ;;but has bad results if the shell does not prompt at all
172: ;; (while (= size (buffer-size))
173: ;; (sleep-for 1))
174: ;;I hope 1 second is enough!
175: (sleep-for 1)
176: (goto-char (point-max))
177: (insert-file-contents startfile)
178: (setq startfile (buffer-substring (point) (point-max)))
179: (delete-region (point) (point-max))
180: (process-send-string proc startfile)))
181: (setq name (process-name proc)))
182: (goto-char (point-max))
183: (set-marker (process-mark proc) (point))
184: (or (eq major-mode 'shell-mode) (shell-mode)))
185: buffer))
186:
187: (defvar shell-set-directory-error-hook 'ignore
188: "Function called with no arguments when shell-send-input
189: recognizes a change-directory command but gets an error
190: trying to change Emacs's default directory.")
191:
192: (defun shell-send-input ()
193: "Send input to subshell.
194: At end of buffer, sends all text after last output
195: as input to the subshell, including a newline inserted at the end.
196: When not at end, copies current line to the end of the buffer and sends it,
197: after first attempting to discard any prompt at the beginning of the line
198: by matching the regexp that is the value of shell-prompt-pattern if possible.
199: This regexp should start with \"^\"."
200: (interactive)
201: (or (get-buffer-process (current-buffer))
202: (error "Current buffer has no process"))
203: (end-of-line)
204: (if (eobp)
205: (progn
206: (move-marker last-input-start
207: (process-mark (get-buffer-process (current-buffer))))
208: (insert ?\n)
209: (move-marker last-input-end (point)))
210: (beginning-of-line)
211: ;; Exclude the shell prompt, if any.
212: (re-search-forward shell-prompt-pattern
213: (save-excursion (end-of-line) (point))
214: t)
215: (let ((copy (buffer-substring (point)
216: (progn (forward-line 1) (point)))))
217: (goto-char (point-max))
218: (move-marker last-input-start (point))
219: (insert copy)
220: (move-marker last-input-end (point))))
221: ;; Even if we get an error trying to hack the working directory,
222: ;; still send the input to the subshell.
223: (condition-case ()
224: (save-excursion
225: (goto-char last-input-start)
226: (shell-set-directory))
227: (error (funcall shell-set-directory-error-hook)))
228: (let ((process (get-buffer-process (current-buffer))))
229: (process-send-region process last-input-start last-input-end)
230: (set-marker (process-mark process) (point))))
231:
232: ;;; If this code changes (shell-send-input and shell-set-directory),
233: ;;; the customization tutorial in
234: ;;; info/customizing-tutorial must also change, since it explains this
235: ;;; code. Please let [email protected] know of any changes you
236: ;;; make.
237:
238: (defun shell-set-directory ()
239: (cond ((and (looking-at shell-popd-regexp)
240: (memq (char-after (match-end 0)) '(?\; ?\n)))
241: (if shell-directory-stack
242: (progn
243: (cd (car shell-directory-stack))
244: (setq shell-directory-stack (cdr shell-directory-stack)))))
245: ((looking-at shell-pushd-regexp)
246: (cond ((memq (char-after (match-end 0)) '(?\; ?\n))
247: (if shell-directory-stack
248: (let ((old default-directory))
249: (cd (car shell-directory-stack))
250: (setq shell-directory-stack
251: (cons old (cdr shell-directory-stack))))))
252: ((memq (char-after (match-end 0)) '(?\ ?\t))
253: (let (dir)
254: (skip-chars-forward "^ ")
255: (skip-chars-forward " \t")
256: (if (file-directory-p
257: (setq dir
258: (expand-file-name
259: (substitute-in-file-name
260: (buffer-substring
261: (point)
262: (progn
263: (skip-chars-forward "^\n \t;")
264: (point)))))))
265: (progn
266: (setq shell-directory-stack
267: (cons default-directory shell-directory-stack))
268: (cd dir)))))))
269: ((looking-at shell-cd-regexp)
270: (cond ((memq (char-after (match-end 0)) '(?\; ?\n))
271: (cd (getenv "HOME")))
272: ((memq (char-after (match-end 0)) '(?\ ?\t))
273: (let (dir)
274: (forward-char 3)
275: (skip-chars-forward " \t")
276: (if (file-directory-p
277: (setq dir
278: (expand-file-name
279: (substitute-in-file-name
280: (buffer-substring
281: (point)
282: (progn
283: (skip-chars-forward "^\n \t;")
284: (point)))))))
285: (cd dir))))))))
286:
287: (defun shell-send-eof ()
288: "Send eof to subshell (or to the program running under it)."
289: (interactive)
290: (process-send-eof))
291:
292: (defun kill-output-from-shell ()
293: "Kill all output from shell since last input."
294: (interactive)
295: (goto-char (point-max))
296: (beginning-of-line)
297: (kill-region last-input-end (point))
298: (insert "*** output flushed ***\n")
299: (goto-char (point-max)))
300:
301: (defun show-output-from-shell ()
302: "Display start of this batch of shell output at top of window.
303: Also put cursor there."
304: (interactive)
305: (set-window-start (selected-window) last-input-end)
306: (goto-char last-input-end))
307:
308: (defun copy-last-shell-input ()
309: "Copy previous shell input, sans newline, and insert before point."
310: (interactive)
311: (insert (buffer-substring last-input-end last-input-start))
312: (delete-char -1))
313:
314: (defun interrupt-shell-subjob ()
315: "Interrupt this shell's current subjob."
316: (interactive)
317: (interrupt-process nil t))
318:
319: (defun kill-shell-subjob ()
320: "Send kill signal to this shell's current subjob."
321: (interactive)
322: (kill-process nil t))
323:
324: (defun quit-shell-subjob ()
325: "Send quit signal to this shell's current subjob."
326: (interactive)
327: (quit-process nil t))
328:
329: (defun stop-shell-subjob ()
330: "Stop this shell's current subjob."
331: (interactive)
332: (stop-process nil t))
333:
334: (defun kill-shell-input ()
335: "Kill all text since last stuff output by the shell or its subjobs."
336: (interactive)
337: (kill-region (process-mark (get-buffer-process (current-buffer)))
338: (point)))
339:
340: (defvar inferior-lisp-mode-map nil)
341: (if inferior-lisp-mode-map
342: nil
343: (setq inferior-lisp-mode-map (copy-alist shell-mode-map))
344: (lisp-mode-commands inferior-lisp-mode-map)
345: (define-key inferior-lisp-mode-map "\e\C-x" 'lisp-send-defun))
346:
347: (defvar inferior-lisp-program "lisp"
348: "*Program name for invoking an inferior Lisp with `run-lisp'.")
349:
350: (defvar inferior-lisp-load-command "(load \"%s\")\n"
351: "*Format-string for building a Lisp expression to load a file.
352: This format string should use %s to substitute a file name
353: and should result in a Lisp expression that will command the inferior Lisp
354: to load that file. The default works acceptably on most Lisps.
355: The string \"(progn (load \\\"%s\\\" :verbose nil :print t) (values))\\\n\"
356: produces cosmetically superior output for this application,
357: but it works only in Common Lisp.")
358:
359: (defvar inferior-lisp-prompt "^.*>:? *$"
360: "*Regexp to recognize prompts from the inferior Lisp.
361: Default is right for Franz Lisp and kcl.")
362:
363: (defun inferior-lisp-mode ()
364: "Major mode for interacting with an inferior Lisp process.
365: Runs a Lisp interpreter as a subprocess of Emacs, with Lisp I/O
366: through an Emacs buffer. Variable inferior-lisp-program controls
367: which Lisp interpreter is run. Variables inferior-lisp-prompt
368: and inferior-lisp-load-command can customize this mode for different
369: Lisp interpreters.
370:
371: Commands:
372: DELETE converts tabs to spaces as it moves back.
373: TAB indents for Lisp; with argument, shifts rest
374: of expression rigidly with the current line.
375: Meta-Control-Q does TAB on each line starting within following expression.
376: Paragraphs are separated only by blank lines. Semicolons start comments.
377:
378: Return at end of buffer sends line as input.
379: Return not at end copies rest of line to end and sends it.
380:
381: The following commands imitate the usual Unix interrupt and
382: editing control characters:
383: \\{shell-mode-map}
384:
385: Entry to this mode calls the value of lisp-mode-hook with no arguments,
386: if that value is non-nil. Likewise with the value of shell-mode-hook.
387: lisp-mode-hook is called after shell-mode-hook.
388:
389: You can send text to the inferior Lisp from other buffers
390: using the commands process-send-region, process-send-string
391: and \\[lisp-send-defun]."
392: (interactive)
393: (kill-all-local-variables)
394: (setq major-mode 'inferior-lisp-mode)
395: (setq mode-name "Inferior Lisp")
396: (setq mode-line-process '(": %s"))
397: (lisp-mode-variables t)
398: (use-local-map inferior-lisp-mode-map)
399: (make-local-variable 'last-input-start)
400: (setq last-input-start (make-marker))
401: (make-local-variable 'last-input-end)
402: (setq last-input-end (make-marker))
403: (run-hooks 'shell-mode-hook 'lisp-mode-hook))
404:
405: (defun run-lisp ()
406: "Run an inferior Lisp process, input and output via buffer *lisp*."
407: (interactive)
408: (switch-to-buffer (make-shell "lisp" inferior-lisp-program))
409: (inferior-lisp-mode))
410:
411: (defun lisp-send-defun (display-flag)
412: "Send the current defun to the Lisp process made by M-x run-lisp.
413: With argument, force redisplay and scrolling of the *lisp* buffer.
414: Variable `inferior-lisp-load-command' controls formatting of
415: the `load' form that is set to the Lisp process."
416: (interactive "P")
417: (or (get-process "lisp")
418: (error "No current lisp process"))
419: (save-excursion
420: (end-of-defun)
421: (let ((end (point))
422: (filename (format "/tmp/emlisp%d" (process-id (get-process "lisp")))))
423: (beginning-of-defun)
424: (write-region (point) end filename nil 'nomessage)
425: (process-send-string "lisp" (format inferior-lisp-load-command filename)))
426: (if display-flag
427: (let* ((process (get-process "lisp"))
428: (buffer (process-buffer process))
429: (w (or (get-buffer-window buffer) (display-buffer buffer)))
430: (height (window-height w))
431: (end))
432: (save-excursion
433: (set-buffer buffer)
434: (setq end (point-max))
435: (while (progn
436: (accept-process-output process)
437: (goto-char (point-max))
438: (beginning-of-line)
439: (or (= (point-max) end)
440: (not (looking-at inferior-lisp-prompt)))))
441: (setq end (point-max))
442: (vertical-motion (- 4 height))
443: (set-window-start w (point)))
444: (set-window-point w end)))))
445:
446: (defun lisp-send-defun-and-go ()
447: "Send the current defun to the inferior Lisp, and switch to *lisp* buffer."
448: (interactive)
449: (lisp-send-defun nil)
450: (switch-to-buffer "*lisp*"))
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