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147 lines
5.2 KiB
EmacsLisp
147 lines
5.2 KiB
EmacsLisp
;;; copyright.el --- update the copyright notice in current buffer
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;; Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
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;; Author: Daniel.Pfeiffer@Informatik.START.dbp.de
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;; fax (+49 69) 7588-2389
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;; Keywords: maint, tools
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;; Allows updating the copyright year and above mentioned GPL version manually
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;; or when saving a file. Do (add-hook 'write-file-hooks 'copyright-update).
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;;; Code:
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(defvar copyright-limit 2000
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"*Don't try to update copyright beyond this position unless interactive.
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`nil' means to search whole buffer.")
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(defvar copyright-regexp
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"\\(\251\\|[Cc]opyright\\s *:?\\s *(C)\
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\\|[Cc]opyright\\s *:?\\s *\251\\)\
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\\s *\\([1-9][-0-9, ']*[0-9]+\\) "
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"*What your copyright notice looks like.
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The second \\( \\) construct must match the years.")
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(defvar copyright-query 'function
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"*If non-`nil', ask user before changing copyright.
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When this is `function', only ask when called non-interactively.")
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(defconst copyright-current-year (substring (current-time-string) -4)
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"String representing the current year.")
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;; when modifying this, also modify the comment generated by autoinsert.el
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(defconst copyright-current-gpl-version "2"
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"String representing the current version of the GPL or `nil'.")
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(defvar copyright-update t)
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;;;###autoload
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(defun copyright-update (&optional arg)
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"Update the copyright notice at the beginning of the buffer to indicate
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the current year. If optional prefix ARG is given replace the years in the
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notice rather than adding the current year after them. If necessary and
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`copyright-current-gpl-version' is set, the copying permissions following the
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copyright, if any, are updated as well."
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(interactive "*P")
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(if copyright-update
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(save-excursion
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(save-restriction
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(widen)
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(goto-char (point-min))
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(if (re-search-forward copyright-regexp copyright-limit t)
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(if (string= (buffer-substring (- (match-end 2) 2) (match-end 2))
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(substring copyright-current-year -2))
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()
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(backward-char 1)
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(if (or (not copyright-query)
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(and (eq copyright-query 'function)
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(eq this-command 'copyright-update))
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(y-or-n-p (if arg
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(concat "Replace copyright year(s) by "
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copyright-current-year "? ")
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(concat "Add " copyright-current-year
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" to copyright? "))))
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(if arg
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(progn
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(delete-region (match-beginning 1) (match-end 1))
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(insert copyright-current-year))
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(setq arg (save-excursion (skip-chars-backward "0-9")))
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(if (and (eq (% (- (string-to-number
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copyright-current-year)
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(string-to-number (buffer-substring
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(+ (point) arg)
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(point))))
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100)
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1)
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(or (eq (char-after (+ (point) arg -1)) ?-)
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(eq (char-after (+ (point) arg -2)) ?-)))
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(delete-char arg)
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(insert ", ")
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(if (eq (char-after (+ (point) arg -3)) ?')
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(insert ?')))
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(insert (substring copyright-current-year arg))))))
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(goto-char (point-min))
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(and copyright-current-gpl-version
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;; match the GPL version comment in .el files, including the
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;; bilingual Esperanto one in two-column, and in texinfo.tex
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(re-search-forward "\\(the Free Software Foundation; either \\|; a\\^u eldono \\([0-9]+\\)a, ? a\\^u (la\\^u via \\)version \\([0-9]+\\), or (at"
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copyright-limit t)
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(not (string= (buffer-substring (match-beginning 3) (match-end 3))
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copyright-current-gpl-version))
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(or (not copyright-query)
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(and (eq copyright-query 'function)
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(eq this-command 'copyright-update))
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(y-or-n-p (concat "Replace GPL version by "
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copyright-current-gpl-version "? ")))
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(progn
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(if (match-end 2)
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;; Esperanto bilingual comment in two-column.el
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(progn
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(delete-region (match-beginning 2) (match-end 2))
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(goto-char (match-beginning 2))
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(insert copyright-current-gpl-version)))
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(delete-region (match-beginning 3) (match-end 3))
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(goto-char (match-beginning 3))
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(insert copyright-current-gpl-version))))
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(set (make-local-variable 'copyright-update) nil)))
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;; If a write-file-hook returns non-nil, the file is presumed to be written.
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nil)
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;;;###autoload
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(define-skeleton copyright
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"Insert a copyright by $ORGANIZATION notice at cursor."
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"Company: "
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comment-start
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"Copyright (C) " copyright-current-year " by "
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(or (getenv "ORGANIZATION")
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str)
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'(if (> (point) copyright-limit)
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(message "Copyright extends beyond `copyright-limit' and won't be updated automatically."))
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comment-end)
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;; copyright.el ends here
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