code.delx.au - gnu-emacs/blob - lisp/cus-dep.el

   1 ;;; cus-dep.el --- find customization dependencies
   2 ;;
   3 ;; Copyright (C) 1997 Free Software Foundation, Inc.
   4 ;;
   5 ;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
   6 ;; Keywords: internal
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Commentary:
  26
  27 ;;; Code:
  28
  29 (eval-when-compile (require 'cl))
  30 (require 'widget)
  31 (require 'cus-face)
  32 (require 'autoload)
  33
  34 (defun custom-make-dependencies ()
  35   "Batch function to extract custom dependencies from .el files.
  36 Usage: emacs -batch -l ./cus-dep.el -f custom-make-dependencies DIRS"
  37   (let ((enable-local-eval nil))
  38     (set-buffer (get-buffer-create " cus-dep temp"))
  39     (dolist (subdir command-line-args-left)
  40       (message "Directory %s" subdir)
  41       (let ((files (directory-files subdir nil "\\`[^=].*\\.el\\'"))
  42             (default-directory (expand-file-name subdir))
  43             is-autoloaded)
  44         (dolist (file files)
  45           (when (file-exists-p file)
  46             (erase-buffer)
  47             (insert-file-contents file)
  48             (goto-char (point-min))
  49             (string-match "\\`\\(.*\\)\\.el\\'" file)
  50             (let ((name (file-name-nondirectory (match-string 1 file))))
  51               (if (save-excursion
  52                     (re-search-forward
  53                      (concat "(provide[ \t\n]+\\('\\|(quote[ \t\n]\\)[ \t\n]*"
  54                              (regexp-quote name) "[ \t\n)]")
  55                      nil t))
  56                   (setq name (intern name)))
  57               (condition-case nil
  58                   (while (re-search-forward
  59                           "^(def\\(custom\\|face\\|group\\)" nil t)
  60                     (setq is-autoloaded nil)
  61                     (beginning-of-line)
  62                     (save-excursion
  63                       (forward-line -1)
  64                       (if (looking-at generate-autoload-cookie)
  65                           (setq is-autoloaded t)))
  66                     (let ((expr (read (current-buffer))))
  67                       (condition-case nil
  68                           (let ((custom-dont-initialize t))
  69                             (eval expr)
  70                             (put (nth 1 expr) 'custom-autoloaded is-autoloaded)
  71                             (put (nth 1 expr) 'custom-where name))
  72                         (error nil))))
  73                 (error nil))))))))
  74   (message "Generating cus-load.el...")
  75   (set-buffer (find-file-noselect "cus-load.el"))
  76   (erase-buffer)
  77   (insert "\
  78 ;;; cus-load.el --- automatically extracted custom dependencies
  79 ;;
  80 ;;; Code:
  81
  82 ")
  83   (mapatoms (lambda (symbol)
  84               (let ((members (get symbol 'custom-group))
  85                     item where found)
  86                 (when members
  87                   ;; So x and no-x builds won't differ.
  88                   (setq members
  89                         (sort (copy-sequence members)
  90                               (lambda (x y) (string< (car x) (car y)))))
  91                   (while members
  92                     (setq item (car (car members))
  93                           members (cdr members)
  94                           where (get item 'custom-where))
  95                     (unless (or (null where)
  96                                 (member where found))
  97                       (if found
  98                           (insert " ")
  99                         (insert "(put '" (symbol-name symbol)
 100                                 " 'custom-loads '("))
 101                       (prin1 where (current-buffer))
 102                       (push where found)))
 103                   (when found
 104                     (insert "))\n"))))))
 105   (insert "\
 106 ;;; These are for handling :version.  We need to have a minimum of
 107 ;;; information so `custom-changed-variables' could do its job.
 108 ;;; For both groups and variables we have to set `custom-version'.
 109 ;;; For variables we also set the `standard-value' and for groups
 110 ;;; `group-documentation' (which is shown in the customize buffer), so
 111 ;;; we don't have to load the file containing the group.
 112
 113 ;;; `custom-versions-load-alist' is an alist that has as car a version
 114 ;;; number and as elts the files that have variables that contain that
 115 ;;; version. These files should be loaded before showing the
 116 ;;; customization buffer that `customize-changed-options' generates.
 117
 118
 119 ;;; This macro is used so we don't modify the information about
 120 ;;; variables and groups if it's already set. (We don't know when
 121 ;;; cus-load.el is going to be loaded and at that time some of the
 122 ;;; files might be loaded and some others might not).
 123 \(defmacro custom-put-if-not (symbol propname value)
 124   `(unless (get ,symbol ,propname)
 125      (put ,symbol ,propname ,value)))
 126
 127 ")
 128   (let ((version-alist nil))
 129     (mapatoms (lambda (symbol)
 130                 (let ((version (get symbol 'custom-version))
 131                       where)
 132                   (when version
 133                     (setq where (get symbol 'custom-where))
 134                     (when (and where
 135                                ;; Don't bother to do anything if it's
 136                                ;; autoloaded because we will have all
 137                                ;; this info when emacs is running
 138                                ;; anyway.
 139                                (not (get symbol 'custom-autoloaded)))
 140                       (insert "(custom-put-if-not '" (symbol-name symbol)
 141                               " 'custom-version ")
 142                       (prin1 version (current-buffer))
 143                       (insert ")\n")
 144                       (insert "(custom-put-if-not '" (symbol-name symbol))
 145                       (if (get symbol 'standard-value)
 146                           ;; This means it's a variable
 147                           (progn
 148                             (insert " 'standard-value t)\n")
 149                             (if (assoc version version-alist)
 150                                 (unless
 151                                     (member where
 152                                             (cdr (assoc version version-alist)))
 153                                   (push where (cdr (assoc version version-alist))))
 154                               (push (cons version (list where)) version-alist)))
 155                         ;; This is a group
 156                         (insert " 'group-documentation ")
 157                         (prin1 (get symbol 'group-documentation) (current-buffer))
 158                         (insert ")\n")))))))
 159
 160     (insert "\n(defvar custom-versions-load-alist "
 161             (if version-alist "'" ""))
 162     (prin1 version-alist (current-buffer))
 163     (insert "\n \"For internal use by custom.\")\n"))
 164
 165   (insert "\
 166
 167 \(provide 'cus-load)
 168
 169 ;;; Local Variables:
 170 ;;; version-control: never
 171 ;;; no-byte-compile: t
 172 ;;; no-update-autoloads: t
 173 ;;; End:
 174 ;;; cus-load.el ends here\n")
 175   (let ((kept-new-versions 10000000))
 176     (save-buffer))
 177   (message "Generating cus-load.el...done")
 178   (kill-emacs))
 179
 180 \f
 181 ;;; cus-dep.el ends here