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- ;;; copyright.el --- update the copyright notice in current buffer
-
- ;; Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
-
- ;; Author: Daniel.Pfeiffer@Informatik.START.dbp.de, fax (+49 69) 7588-2389
- ;; Keywords: maint, tools
-
- ;; 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.
-
- ;;; Commentary:
-
- ;; Allows updating the copyright year and above mentioned GPL version manually
- ;; or when saving a file. Do (add-hook 'write-file-hooks 'copyright-update).
-
- ;;; Code:
-
- (defvar copyright-limit 2000
- "*Don't try to update copyright beyond this position unless interactive.
- `nil' means to search whole buffer.")
-
-
- (defvar copyright-regexp
- "\\(\251\\|[Cc]opyright\\s *:?\\s *(C)\\)\\s *\\([1-9][-0-9, ']*[0-9]+\\) "
- "*What your copyright notice looks like.
- The second \\( \\) construct must match the years.")
-
-
- (defvar copyright-query 'function
- "*If non-`nil', ask user before changing copyright.
- When this is `function', only ask when called non-interactively.")
-
-
- (defconst copyright-current-year (substring (current-time-string) -4)
- "String representing the current year.")
-
-
- ;; when modifying this, also modify the comment generated by autoinsert.el
- (defconst copyright-current-gpl-version "2"
- "String representing the current version of the GPL or `nil'.")
-
- (defvar copyright-update t)
-
- ;;;###autoload
- (defun copyright-update (&optional arg)
- "Update the copyright notice at the beginning of the buffer to indicate
- the current year. If optional prefix ARG is given replace the years in the
- notice rather than adding the current year after them. If necessary and
- `copyright-current-gpl-version' is set, the copying permissions following the
- copyright, if any, are updated as well."
- (interactive "*P")
- (if copyright-update
- (save-excursion
- (save-restriction
- (widen)
- (goto-char (point-min))
- (if (re-search-forward copyright-regexp copyright-limit t)
- (if (string= (buffer-substring (- (match-end 2) 2) (match-end 2))
- (substring copyright-current-year -2))
- ()
- (backward-char 1)
- (if (or (not copyright-query)
- (and (eq copyright-query 'function)
- (eq this-command 'copyright-update))
- (y-or-n-p (if arg
- (concat "Replace copyright year(s) by "
- copyright-current-year "? ")
- (concat "Add " copyright-current-year
- " to copyright? "))))
- (if arg
- (progn
- (delete-region (match-beginning 1) (match-end 1))
- (insert copyright-current-year))
- (setq arg (save-excursion (skip-chars-backward "0-9")))
- (if (and (eq (% (- (string-to-number
- copyright-current-year)
- (string-to-number (buffer-substring
- (+ (point) arg)
- (point))))
- 100)
- 1)
- (or (eq (char-after (+ (point) arg -1)) ?-)
- (eq (char-after (+ (point) arg -2)) ?-)))
- (delete-char arg)
- (insert ", ")
- (if (eq (char-after (+ (point) arg -3)) ?')
- (insert ?')))
- (insert (substring copyright-current-year arg))))))
- (goto-char (point-min))
- (and copyright-current-gpl-version
- ;; match the GPL version comment in .el files, including the
- ;; bilingual Esperanto one in two-column, and in texinfo.tex
- (re-search-forward "\\(the Free Software Foundation; either \\|; a\\^u eldono \\([0-9]+\\)a, ? a\\^u (la\\^u via \\)version \\([0-9]+\\), or (at"
- copyright-limit t)
- (not (string= (buffer-substring (match-beginning 3) (match-end 3))
- copyright-current-gpl-version))
- (or (not copyright-query)
- (and (eq copyright-query 'function)
- (eq this-command 'copyright-update))
- (y-or-n-p (concat "Replace GPL version by "
- copyright-current-gpl-version "? ")))
- (progn
- (if (match-end 2)
- ;; Esperanto bilingual comment in two-column.el
- (progn
- (delete-region (match-beginning 2) (match-end 2))
- (goto-char (match-beginning 2))
- (insert copyright-current-gpl-version)))
- (delete-region (match-beginning 3) (match-end 3))
- (goto-char (match-beginning 3))
- (insert copyright-current-gpl-version))))
- (set (make-local-variable 'copyright-update) nil)))
- ;; If a write-file-hook returns non-nil, the file is presumed to be written.
- nil)
-
-
- ;;;###autoload
- (define-skeleton copyright
- "Insert a copyright by $ORGANIZATION notice at cursor."
- "Company: "
- comment-start
- "Copyright (C) " copyright-current-year " by "
- (or (getenv "ORGANIZATION")
- str)
- '(if (> (point) copyright-limit)
- (message "Copyright extends beyond `copyright-limit' and won't be updated automatically."))
- comment-end)
-
- ;; copyright.el ends here
-