Return to shell.el CVS log

Up to [CSRG BSD Unix] / 43BSD / contrib / emacs / lisp

Annotation of 43BSD/contrib/emacs/lisp/shell.el, revision 1.1

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*"))

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.