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