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- ;; #(@) crontab.el - An Emacs function to assist in editing crontab entries
- ;; Last edited: Fri Aug 18 12:19:22 1989 by chris (Christopher D. Orr) on lxn
- ;;
- ;; Version: 1.00 - Initial Creation of mode
- ;; 1.01 - Added crontab-use-local-file variable
- ;; 1.02 - Reworked most of the library to be cleaner.
- ;; 1.03 - Now deletes blank lines in crontab entry
-
- ;; Copyright (C) 1989 Christopher D. Orr (chris@lxn.eds.com)
-
- ;; This file is part of XEmacs.
-
- ;; XEmacs 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 2, or (at your option)
- ;; any later version.
-
- ;; XEmacs 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 XEmacs; see the file COPYING. If not, write to the
- ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Synched up with: Not in FSF.
-
- ;;
- ;; TODO:
- ;;
-
- ;; Place the following line in your ~/.emacs file:
- ;; (autoload 'crontab-edit "crontab"
- ;; "Function to allow the easy editing of crontab files." t)
- ;;
-
- (provide 'crontab-edit)
-
- ;;; Local Variables. Define these to your liking.
-
- (defgroup crontab nil
- "Assist in editing crontab files."
- :group 'languages)
-
-
- (defcustom crontab-filename "~/.crontab"
- "*The name of the file to store the User's Crontab."
- :type 'file
- :group 'crontab)
-
- (defcustom crontab-directory "/usr/spool/cron/crontabs"
- "*The name of the directory in which crontab stores it's entries."
- :type 'file
- :group 'crontab)
-
- (defcustom crontab-use-local-file nil
- "*Non-nil means use file stored in User's Home directory, if it exists.
- Otherwise, always ask crontab for the current entry (maybe)."
- :type 'boolean
- :group 'crontab)
-
-
- ;;; Interactive Function called to edit a Crontab Entry. It is called
- ;;; instead of crontab-edit to allow for future automatic entries.
-
- (defun crontab-edit ()
- "Function to allow the easy editing of crontab files."
-
- (interactive)
- (crontab-get))
-
-
- ;;; Function to retrieve the crontab entry. The Function will
- ;;; retrieve the file (crontab-filename) first. If the file does not
- ;;; exists, a crontab -l command will be executed.
-
- (defun crontab-get ()
- "Retrieve a crontab file either using crontab -l or from the variable
- crontab-filename"
- (message "Retrieving Crontab ... ")
- (switch-to-buffer (create-file-buffer crontab-filename))
- (erase-buffer)
-
- (if (file-exists-p crontab-filename)
- (if (file-newer-than-file-p (concat crontab-directory "/" (user-login-name)) (expand-file-name crontab-filename))
- (if (yes-or-no-p "Cron has a more recent copy of your crontab. Use it ? ")
- (call-process "crontab" nil t t "-l")
- (insert-file crontab-filename))
- (if crontab-use-local-file
- (insert-file crontab-filename)
- (call-process "crontab" nil t t "-l")))
- (if crontab-use-local-file
- (insert-file crontab-filename)
- (call-process "crontab" nil t t "-l")))
-
- ;; What if crontab returns a fatal ?????? Can't we check the errorlevel ????
- (goto-char (point-min))
- (if (search-forward-regexp "crontab:\\|no crontab for" nil t nil)
- (erase-buffer))
- (if (eobp)
- (crontab-initialize))
- (goto-line 6)
- (setq buffer-file-name crontab-filename)
- (set-buffer-modified-p nil)
- (make-variable-buffer-local 'write-file-hooks)
- (or (memq 'crontab-save write-file-hooks)
- (setq write-file-hooks
- (reverse (cons 'crontab-save (reverse write-file-hooks)))))
- (message "Save file normally when finished to update cron."))
-
-
- ;;; This function is called whenever a save-file operation is
- ;;; performed in the crontab buffer. It saves the crontab to the file
- ;;; name (crontab-filename) and then removes the crontab buffer.
-
- (defun crontab-save ()
- "Submit the edited crontab to the cron deamon for processing"
-
- (goto-char (point-min))
- (while (not (eobp))
- (delete-blank-lines)
- (forward-line 1))
- (redraw-display)
-
- (setq write-file-hooks nil)
- (let ((crontab-buffer (buffer-name)))
- (basic-save-buffer)
-
- ;; What if the call-process to crontab fails ??? Can we check for a fatal ???
- ;; (call-process "crontab" nil nil nil (expand-file-name crontab-filename))
- (shell-command (concat "crontab " (expand-file-name crontab-filename)))
-
- (switch-to-buffer (other-buffer))
- (kill-buffer crontab-buffer))
- (message (concat "Crontab saved as " crontab-filename " and submitted to cron."))
- ;; fixed by Lynn D. Newton - 03/17/95
- "")
- ;; OLD
- ;; nil)
-
- (defun crontab-initialize ()
- "Create a default Crontab file if one does not exist or is empty.
- If the function (time-stamp) is available, the last modification time will
- be stamped to the file."
-
- (insert "# Cron Table Entry for ")
- (insert (user-login-name))
- (insert " (")
- (insert (user-full-name))
- (insert ")\n# Last Edited: \n")
- (insert "#\n")
- (insert "# min hr day mon wday(0=sun) cmd\n")
- (insert "#\n"))
-
- ;;; Watch out for the signature :-)
-