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-
- ;; Run subshell under Emacs
- ;; Copyright (C) 1985, 1986, 1987, 1988 Free Software Foundation, Inc.
- ;; Modifications by William Schelter
- ;; This file is part of GNU Emacs.
-
- ;; GNU Emacs is free software; you can redistribute it and/or modify
- ;; it under the terms of the GNU General Public License as published by
- ;; the Free Software Foundation; either version 1, or (at your option)
- ;; any later version.
-
- ;; GNU Emacs is distributed in the hope that it will be useful,
- ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ;; GNU General Public License for more details.
-
- ;; You should have received a copy of the GNU General Public License
- ;; along with GNU Emacs; see the file COPYING. If not, write to
- ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- ;; The following is a "simple shell" much like the one in version 18
- ;; of emacs. Unfortunately cmint breaks most code which tries to use
- ;; the shell mode, and is rather complex.
-
- ;; This mode uses a better completion mechanism (smart-complete.el),
- ;; in that it should
- ;; find the input you really want with your typing less keystrokes,
- ;; and easier keystrokes to type
-
-
-
-
-
- (defvar last-input-start nil
- "In a sshell-mode buffer, marker for start of last unit of input.")
- (defvar last-input-end nil
- "In a sshell-mode buffer, marker for end of last unit of input.")
-
- (defvar sshell-mode-map nil)
-
- (defvar sshell-directory-stack nil
- "List of directories saved by pushd in this buffer's sshell.")
-
- (defvar sshell-popd-regexp "popd"
- "*Regexp to match subsshell commands equivalent to popd.")
-
- (defvar sshell-pushd-regexp "pushd"
- "*Regexp to match subsshell commands equivalent to pushd.")
-
- (defvar sshell-cd-regexp "cd"
- "*Regexp to match subsshell commands equivalent to cd.")
-
- (defvar explicit-sshell-file-name nil
- "*If non-nil, is file name to use for explicitly requested inferior sshell.")
-
-
- ;In loaddefs.el now.
- (defconst sshell-prompt-pattern
- "\\(^\\|\n\\)[^ >]*[>$)%#:][>]*[ ]*"
- "*Regexp used by Newline command to match subsshell prompts.
- Anything from beginning of line up to the end of what this pattern matches
- is deemed to be prompt, and is not reexecuted.")
-
- (defun sshell-mode ()
- "Major mode for interacting with an inferior sshell.
- Sshell name is same as buffer name, sans the asterisks.
- Return at end of buffer sends line as input.
- Return not at end copies rest of line to end and sends it.
-
- The following commands imitate the usual Unix interrupt and
- editing control characters:
- \\{sshell-mode-map}
-
- Entry to this mode calls the value of sshell-mode-hook with no args,
- if that value is non-nil.
-
- cd, pushd and popd commands given to the sshell are watched
- by Emacs to keep this buffer's default directory
- the same as the sshell's working directory.
- Variables sshell-cd-regexp, sshell-pushd-regexp and sshell-popd-regexp
- are used to match these command names.
-
- You can send text to the sshell (or its subjobs) from other buffers
- using the commands process-send-region, process-send-string
- and lisp-send-defun."
- (interactive)
- (kill-all-local-variables)
- (setq major-mode 'sshell-mode)
- (setq mode-name "Sshell")
- (setq mode-line-process '(": %s"))
- (use-local-map sshell-mode-map)
- (make-local-variable 'sshell-directory-stack)
- (setq sshell-directory-stack nil)
- (make-local-variable 'last-input-start)
- (setq last-input-start (make-marker))
- (make-local-variable 'last-input-end)
- (setq last-input-end (make-marker))
- (run-hooks 'sshell-mode-hook))
-
- (if sshell-mode-map
- nil
- (setq sshell-mode-map (make-sparse-keymap))
- (define-key sshell-mode-map "\t" 'sshell-complete-filename)
- (define-key sshell-mode-map "\C-m" 'sshell-send-input)
- (define-key sshell-mode-map "\C-c\C-d" 'sshell-send-eof)
- (define-key sshell-mode-map "\C-c\C-u" 'kill-sshell-input)
- (define-key sshell-mode-map "\C-c\C-w" 'backward-kill-word)
- (define-key sshell-mode-map "\C-c\C-c" 'interrupt-sshell-subjob)
- (define-key sshell-mode-map "\C-c\C-z" 'stop-sshell-subjob)
- (define-key sshell-mode-map "\C-c\C-\\" 'quit-sshell-subjob)
- (define-key sshell-mode-map "\C-c\C-o" 'kill-output-from-sshell)
- (define-key sshell-mode-map "\C-c\C-r" 'show-output-from-sshell)
- (define-key sshell-mode-map "\C-c\C-y" 'copy-last-sshell-input))
-
-
- (defun sshell-complete-filename ()
- (interactive)
- (let* ((p (point)) tem beg
- (ff
- (save-excursion
- (skip-chars-backward "[a-z---_0-9$/A-Z~#.]")
- (buffer-substring (setq beg (point)) p))))
- (setq dir (or (file-name-directory ff) default-directory))
- (setq file (file-name-nondirectory ff))
- (cond ((and (setq tem (file-name-completion (or file "") dir))
- (not (equal tem file)))
- (cond ((eq tem t))
- (t
- (delete-region beg p)
- (insert (concat dir tem)))))
- (t
- (let ((lis (file-name-all-completions file dir)))
- (with-output-to-temp-buffer "*completions*"
- (display-completion-list lis))
- )))))
-
- (defvar explicit-csh-args
- (if (eq system-type 'hpux)
- ;; -T persuades HP's csh not to think it is smarter
- ;; than us about what terminal modes to use.
- '("-i" "-T")
- '("-i"))
- "Args passed to inferior sshell by M-x sshell, if the sshell is csh.
- Value is a list of strings, which may be nil.")
-
-
- (defun sshell ()
- "Run an inferior sshell, with I/O through buffer *sshell*.
- If buffer exists but sshell process is not running, make new sshell.
- Program used comes from variable explicit-sshell-file-name,
- or (if that is nil) from the ESHELL environment variable,
- or else from SHELL if there is no ESHELL.
- If a file ~/.emacs_SHELLNAME exists, it is given as initial input
- (Note that this may lose due to a timing error if the sshell
- discards input when it starts up.)
- The buffer is put in sshell-mode, giving commands for sending input
- and controlling the subjobs of the sshell. See sshell-mode.
- See also variable sshell-prompt-pattern.
-
- The sshell file name (sans directories) is used to make a symbol name
- such as `explicit-csh-arguments'. If that symbol is a variable,
- its value is used as a list of arguments when invoking the sshell.
- Otherwise, one argument `-i' is passed to the sshell.
-
- Note that many people's .cshrc files unconditionally clear the prompt.
- If yours does, you will probably want to change it."
- (interactive)
- (let* ((prog (or explicit-sshell-file-name
- (getenv "ESHELL")
- (getenv "SHELL")
- "/bin/sh"))
- (name (file-name-nondirectory prog)))
- (switch-to-buffer
- (apply 'make-sshell "shell" prog
- (if (file-exists-p (concat "~/.emacs_" name))
- (concat "~/.emacs_" name))
- (let ((symbol (intern-soft (concat "explicit-" name "-args"))))
- (if (and symbol (boundp symbol))
- (symbol-value symbol)
- '("-i")))))))
-
- (defun make-sshell (name program &optional startfile &rest switches)
- (let ((buffer (get-buffer-create (concat "*" name "*")))
- proc status size)
- (setq proc (get-buffer-process buffer))
- (if proc (setq status (process-status proc)))
- (save-excursion
- (set-buffer buffer)
- ;; (setq size (buffer-size))
- (if (memq status '(run stop))
- nil
- (if proc (delete-process proc))
- (setq proc (apply 'start-process name buffer
- (or program explicit-sshell-file-name
- (getenv "ESHELL")
- (getenv "SHELL")
- "/bin/sh")
- switches))
-
- (cond (startfile
- ;;This is guaranteed to wait long enough
- ;;but has bad results if the sshell does not prompt at all
- ;; (while (= size (buffer-size))
- ;; (sleep-for 1))
- ;;I hope 1 second is enough!
- (sleep-for 1)
- (goto-char (point-max))
- (insert-file-contents startfile)
- (setq startfile (buffer-substring (point) (point-max)))
- (delete-region (point) (point-max))
- (process-send-string proc startfile)))
- (setq name (process-name proc)))
- (goto-char (point-max))
- (set-marker (process-mark proc) (point))
- (sshell-mode))
- buffer))
-
- (defvar sshell-set-directory-error-hook 'ignore
- "Function called with no arguments when sshell-send-input
- recognizes a change-directory command but gets an error
- trying to change Emacs's default directory.")
-
- (defun sshell-send-input ()
- "Send input to subsshell.
- At end of buffer, sends all text after last output
- as input to the subsshell, including a newline inserted at the end.
- When not at end, copies current line to the end of the buffer and sends it,
- after first attempting to discard any prompt at the beginning of the line
- by matching the regexp that is the value of sshell-prompt-pattern if possible.
- This regexp should start with \"^\"."
- (interactive)
- (or (get-buffer-process (current-buffer))
- (error "Current buffer has no process"))
- (end-of-line)
- (if (eobp)
- (progn
- (move-marker last-input-start
- (process-mark (get-buffer-process (current-buffer))))
- (insert ?\n)
- (move-marker last-input-end (point)))
- (beginning-of-line)
- ;; Exclude the sshell prompt, if any.
- (re-search-forward sshell-prompt-pattern
- (save-excursion (end-of-line) (point))
- t)
- (let ((copy (buffer-substring (point)
- (progn (forward-line 1) (point)))))
- (goto-char (point-max))
- (move-marker last-input-start (point))
- (insert copy)
- (move-marker last-input-end (point))))
- ;; Even if we get an error trying to hack the working directory,
- ;; still send the input to the subsshell.
- (condition-case ()
- (save-excursion
- (goto-char last-input-start)
- (sshell-set-directory))
- (error (funcall sshell-set-directory-error-hook)))
- (let ((process (get-buffer-process (current-buffer)))
- (s (buffer-substring last-input-start last-input-end))
- )
- ;; avoid sending emacs's idea of what an international character
- ;; set string is to a subprocess..
- (if (fboundp 'string-make-unibyte)
- (setq s (string-make-unibyte s)))
- (process-send-string process s)
- (set-marker (process-mark process) (point))))
-
- ;;; If this code changes (sshell-send-input and sshell-set-directory),
- ;;; the customization tutorial in
- ;;; info/customizing-tutorial must also change, since it explains this
- ;;; code. Please let marick@gswd-vms.arpa know of any changes you
- ;;; make.
-
-
- (defun sshell-set-directory ()
- (cond ((and (looking-at sshell-popd-regexp)
- (memq (char-after (match-end 0)) '(?\; ?\n)))
- (if sshell-directory-stack
- (progn
- (cd (car sshell-directory-stack))
- (setq sshell-directory-stack (cdr sshell-directory-stack)))))
- ((looking-at sshell-pushd-regexp)
- (cond ((memq (char-after (match-end 0)) '(?\; ?\n))
- (if sshell-directory-stack
- (let ((old default-directory))
- (cd (car sshell-directory-stack))
- (setq sshell-directory-stack
- (cons old (cdr sshell-directory-stack))))))
- ((memq (char-after (match-end 0)) '(?\ ?\t))
- (let (dir)
- (skip-chars-forward "^ ")
- (skip-chars-forward " \t")
- (if (file-directory-p
- (setq dir
- (expand-file-name
- (substitute-in-file-name
- (buffer-substring
- (point)
- (progn
- (skip-chars-forward "^\n \t;")
- (point)))))))
- (progn
- (setq sshell-directory-stack
- (cons default-directory sshell-directory-stack))
- (cd dir)))))))
- ((looking-at sshell-cd-regexp)
- (cond ((memq (char-after (match-end 0)) '(?\; ?\n))
- (cd (getenv "HOME")))
- ((memq (char-after (match-end 0)) '(?\ ?\t))
- (let (dir)
- (forward-char 3)
- (skip-chars-forward " \t")
- (if (file-directory-p
- (setq dir
- (expand-file-name
- (substitute-in-file-name
- (buffer-substring
- (point)
- (progn
- (skip-chars-forward "^\n \t;")
- (point)))))))
- (cd dir))))))))
-
- (defun sshell-send-eof ()
- "Send eof to subsshell (or to the program running under it)."
- (interactive)
- (process-send-eof))
-
- (defun kill-output-from-sshell ()
- "Kill all output from sshell since last input."
- (interactive)
- (goto-char (point-max))
- (beginning-of-line)
- (kill-region last-input-end (point))
- (insert "*** output flushed ***\n")
- (goto-char (point-max)))
-
- (defun show-output-from-sshell ()
- "Display start of this batch of sshell output at top of window.
- Also put cursor there."
- (interactive)
- (set-window-start (selected-window) last-input-end)
- (goto-char last-input-end))
-
- (defun copy-last-sshell-input ()
- "Copy previous sshell input, sans newline, and insert before point."
- (interactive)
- (insert (buffer-substring last-input-end last-input-start))
- (delete-char -1))
-
- (defun interrupt-sshell-subjob ()
- "Interrupt this sshell's current subjob."
- (interactive)
- (interrupt-process nil t))
-
- (defun kill-sshell-subjob ()
- "Send kill signal to this sshell's current subjob."
- (interactive)
- (kill-process nil t))
-
- (defun quit-sshell-subjob ()
- "Send quit signal to this sshell's current subjob."
- (interactive)
- (quit-process nil t))
-
- (defun stop-sshell-subjob ()
- "Stop this sshell's current subjob."
- (interactive)
- (stop-process nil t))
-
- (defun kill-sshell-input ()
- "Kill all text since last stuff output by the sshell or its subjobs."
- (interactive)
- (kill-region (process-mark (get-buffer-process (current-buffer)))
- (point)))
- (require 'smart-complete)
-
- (provide 'sshell)