mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-24 07:20:37 +00:00
118 lines
3.8 KiB
EmacsLisp
118 lines
3.8 KiB
EmacsLisp
;;; zone-mode.el -- major mode for editing DNS zone files.
|
|
|
|
;; Copyright (C) 1998 Free Software Foundation, Inc.
|
|
|
|
;; Author: John Heidemann <johnh@isi.edu>
|
|
;; Keywords: DNS, languages
|
|
|
|
;; 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 2, 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, Inc., 59 Temple Place - Suite 330,
|
|
;; Boston, MA 02111-1307, USA.
|
|
|
|
;;;
|
|
;;; See the comments in ``define-derived-mode zone-mode''
|
|
;;; (the last function in this file)
|
|
;;; for what this mode is and how to use it automatically.
|
|
;;;
|
|
|
|
;;;
|
|
;;; Credits:
|
|
;;; Zone-mode was written by John Heidemann <johnh@isi.edu>,
|
|
;;; with bug fixes from Simon Leinen <simon@limmat.switch.ch>.
|
|
;;;
|
|
|
|
;;; Code:
|
|
|
|
(defun zone-mode-update-serial ()
|
|
"Update the serial number in a zone."
|
|
(interactive)
|
|
(save-excursion
|
|
(goto-char (point-min))
|
|
(while (re-search-forward "\\b\\([0-9]+\\)\\([0-9][0-9]\\)\\([ \t]+;[ \t]+[Ss]erial\\)" (point-max) t)
|
|
(let* ((old-date (match-string 1))
|
|
(old-seq (match-string 2))
|
|
(old-seq-num (string-to-number (match-string 2)))
|
|
(old-flag (match-string 3))
|
|
(cur-date (format-time-string "%Y%m%d"))
|
|
(new-seq
|
|
(cond
|
|
((not (string= old-date cur-date))
|
|
"00") ;; reset sequeence number
|
|
((>= old-seq-num 99)
|
|
(error "Serial number's sequenece cannot increment beyond 99."))
|
|
(t
|
|
(format "%02d" (1+ old-seq-num)))))
|
|
(old-serial (concat old-date old-seq))
|
|
(new-serial (concat cur-date new-seq)))
|
|
(if (string-lessp new-serial old-serial)
|
|
(error (format "Serial numbers want to move backwards from %s to %s!" old-serial new-serial))
|
|
(replace-match (concat cur-date new-seq old-flag) t t))))))
|
|
|
|
;;;###autoload
|
|
(defun zone-mode-update-serial-hook ()
|
|
"Update the serial number in a zone if the file was modified"
|
|
(interactive)
|
|
(if (buffer-modified-p (current-buffer))
|
|
(zone-mode-update-serial))
|
|
nil ;; so we can run from write-file-hooks
|
|
)
|
|
|
|
(defvar zone-mode-syntax-table nil
|
|
"Zone-mode's syntax table.")
|
|
|
|
(defun zone-mode-load-time-setup ()
|
|
"init zone-mode stuff"
|
|
(setq zone-mode-syntax-table (make-syntax-table))
|
|
(modify-syntax-entry ?\; "<" zone-mode-syntax-table)
|
|
(modify-syntax-entry ?\n ">" zone-mode-syntax-table))
|
|
|
|
;;;###autoload
|
|
(define-derived-mode zone-mode fundamental-mode "zone"
|
|
"A mode for editing DNS zone files.
|
|
|
|
Zone-mode does two things:
|
|
|
|
- automatically update the serial number for a zone
|
|
when saving the file
|
|
|
|
- fontification"
|
|
|
|
(make-local-hook 'write-file-hooks)
|
|
(add-hook 'write-file-hooks 'zone-mode-update-serial-hook)
|
|
|
|
(if (null zone-mode-syntax-table)
|
|
(zone-mode-load-time-setup)) ;; should have been run at load-time
|
|
|
|
;; font-lock support:
|
|
(set-syntax-table zone-mode-syntax-table)
|
|
(make-local-variable 'comment-start)
|
|
(setq comment-start ";")
|
|
(make-local-variable 'comment-start-skip)
|
|
;; Look within the line for a ; following an even number of backslashes
|
|
;; after either a non-backslash or the line beginning.
|
|
(setq comment-start-skip "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\);+[ \t]*")
|
|
(make-local-variable 'comment-column)
|
|
(setq comment-column 40)
|
|
(make-local-variable 'font-lock-defaults)
|
|
(setq font-lock-defaults
|
|
'(nil nil nil nil beginning-of-line)))
|
|
|
|
(zone-mode-load-time-setup)
|
|
|
|
(provide 'zone-mode)
|
|
|
|
;;; zone-mode.el ends here
|