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1 ;;; cleantree.el --- Remove out of date .elcs in lisp directories
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2
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3 ;; Copyright (C) 1997 by Free Software Foundation, Inc.
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4
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5 ;; Author: Steven L Baur <steve@altair.xemacs.org>
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6 ;; Keywords: internal
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7
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8 ;; This file is part of XEmacs.
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9
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10 ;; XEmacs is free software; you can redistribute it and/or modify it
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11 ;; under the terms of the GNU General Public License as published by
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12 ;; the Free Software Foundation; either version 2, or (at your option)
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13 ;; any later version.
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14
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15 ;; XEmacs is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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22 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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23 ;; 02111-1307, USA.
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24
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25 ;;; Synched up with: Not in FSF
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26
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27 ;;; Commentary:
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28
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29 ;; This code is derived from Gnus based on a suggestion by
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30 ;; David Moore <dmoore@ucsd.edu>
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31
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32 ;;; Code:
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33
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34 (defun remove-old-elc-1 (dir &optional seen)
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35 (setq dir (file-name-as-directory dir))
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36 ;; Only scan this sub-tree if we haven't been here yet.
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37 (unless (member (file-truename dir) seen)
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38 (push (file-truename dir) seen)
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39 ;; We descend recursively
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40 (let ((dirs (directory-files dir t nil t))
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41 dir)
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42 (while (setq dir (pop dirs))
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43 (when (and (not (member (file-name-nondirectory dir) '("." "..")))
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44 (file-directory-p dir))
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45 (remove-old-elc-1 dir seen))))
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46 ;; Do this directory.
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47 (let ((files (directory-files dir t ".el$"))
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48 file file-c)
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49 (while (setq file (car files))
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50 (setq files (cdr files))
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51 (setq file-c (concat file "c"))
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52 (when (and (file-exists-p file-c)
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53 (file-newer-than-file-p file file-c))
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54 (message file-c)
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55 (delete-file file-c))))))
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56
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57 ;;;###autoload
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58 (defun batch-remove-old-elc ()
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59 (defvar command-line-args-left)
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60 (unless noninteractive
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61 (error "`batch-remove-old-elc' is to be used only with -batch"))
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62 (let ((dir (car command-line-args-left)))
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63 (message "Cleaning out of date .elcs in directory `%s'..." dir)
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64 (remove-old-elc-1 dir)
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65 (message "Cleaning out of date .elcs in directory `%s'...done" dir))
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66 (setq command-line-args-left nil))
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67
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68 ;;; cleantree.el ends here
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