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         (all-subdirs command-line-args-left)
  39         (start-directory default-directory))
  40     (get-buffer-create " cus-dep temp")
  41     (set-buffer " cus-dep temp")
  42     (while all-subdirs
  43       (message "Directory %s" (car all-subdirs))
  44       (let ((files (directory-files (car all-subdirs) nil "\\`[^=].*\\.el\\'"))
  45             (default-directory default-directory)
  46             file
  47             is-autoloaded)
  48         (cd (car all-subdirs))
  49         (while files
  50           (setq file (car files)
  51                 files (cdr files))
  52           (when (file-exists-p file)
  53             (erase-buffer)
  54             (insert-file-contents file)
  55             (goto-char (point-min))
  56             (string-match "\\`\\(.*\\)\\.el\\'" file)
  57             (let ((name (file-name-nondirectory (match-string 1 file))))
  58               (condition-case nil
  59                   (while (re-search-forward "^(defcustom\\|^(defface\\|^(defgroup"
  60                                             nil t)
  61                     (setq is-autoloaded nil)
  62                     (beginning-of-line)
  63                     (save-excursion
  64                       (forward-line -1)
  65                       (if (looking-at generate-autoload-cookie)
  66                           (setq is-autoloaded t)))
  67                     (let ((expr (read (current-buffer))))
  68                       (condition-case nil
  69                           (progn
  70                             (eval expr)
  71                             (put (nth 1 expr) 'custom-autoloaded is-autoloaded)
  72                             (put (nth 1 expr) 'custom-where name))
  73                         (error nil))))
  74                 (error nil)))))
  75         (setq all-subdirs (cdr all-subdirs)))))
  76   (message "Generating cus-load.el...")
  77   (find-file "cus-load.el")
  78   (erase-buffer)
  79   (insert "\
  80 ;;; cus-load.el --- automatically extracted custom dependencies
  81 ;;
  82 ;;; Code:
  83
  84 ")
  85   (mapatoms (lambda (symbol)
  86               (let ((members (get symbol 'custom-group))
  87                     item where found)
  88                 (when members
  89                   (while members
  90                     (setq item (car (car members))
  91                           members (cdr members)
  92                           where (get item 'custom-where))
  93                     (unless (or (null where)
  94                                 (member where found))
  95                       (if found
  96                           (insert " ")
  97                         (insert "(put '" (symbol-name symbol)
  98                                 " 'custom-loads '("))
  99                       (prin1 where (current-buffer))
 100                       (push where found)))
 101                   (when found
 102                     (insert "))\n"))))))
 103   (insert "\
 104 ;;; These are for handling :version.  We need to have a minimum of
 105 ;;; information so `custom-changed-variables' could do its job.
 106 ;;; For both groups and variables we have to set `custom-version'.
 107 ;;; For variables we also set the `standard-value' and for groups
 108 ;;; `group-documentation' (which is shown in the customize buffer), so
 109 ;;; we don't have to load the file containing the group.
 110
 111 ;;; `custom-versions-load-alist' is an alist that has as car a version
 112 ;;; number and as elts the files that have variables that contain that
 113 ;;; version. These files should be loaded before showing the
 114 ;;; customization buffer that `customize-changed-options' generates.
 115
 116
 117 ;;; This macro is used so we don't modify the information about
 118 ;;; variables and groups if it's already set. (We don't know when
 119 ;;; cus-load.el is going to be loaded and at that time some of the
 120 ;;; files might be loaded and some others might not).
 121 \(defmacro custom-put-if-not (symbol propname value)
 122   `(unless (get ,symbol ,propname)
 123      (put ,symbol ,propname ,value)))
 124
 125 ")
 126   (let ((version-alist nil))
 127     (mapatoms (lambda (symbol)
 128                 (let ((version (get symbol 'custom-version))
 129                       where)
 130                   (when version
 131                     (setq where (get symbol 'custom-where))
 132                     (when (and where
 133                                ;; Don't bother to do anything if it's
 134                                ;; autoloaded because we will have all
 135                                ;; this info when emacs is running
 136                                ;; anyway.
 137                                (not (get symbol 'custom-autoloaded)))
 138                       (insert "(custom-put-if-not '" (symbol-name symbol)
 139                               " 'custom-version ")
 140                       (prin1 version (current-buffer))
 141                       (insert ")\n")
 142                       (insert "(custom-put-if-not '" (symbol-name symbol))
 143                       (if (get symbol 'standard-value)
 144                           ;; This means it's a variable
 145                           (progn
 146                             (insert " 'standard-value t)\n")
 147                             (if (assoc version version-alist)
 148                                 (unless
 149                                     (member where
 150                                             (cdr (assoc version version-alist)))
 151                                   (push where (cdr (assoc version version-alist))))
 152                               (push (cons version (list where)) version-alist)))
 153                         ;; This is a group
 154                         (insert " 'group-documentation ")
 155                         (prin1 (get symbol 'group-documentation) (current-buffer))
 156                         (insert ")\n")))))))
 157
 158     (insert "\n(defvar custom-versions-load-alist "
 159             (if version-alist "'" ""))
 160     (prin1 version-alist (current-buffer))
 161     (insert "\n \"For internal use by custom.\")\n"))
 162
 163   (insert "\
 164
 165 \(provide 'cus-load)
 166
 167 ;;; Local Variables:
 168 ;;; version-control: never
 169 ;;; no-byte-compile: t
 170 ;;; no-update-autoloads: t
 171 ;;; End:
 172 ;;; cus-load.el ends here\n")
 173   (let ((kept-new-versions 10000000))
 174     (save-buffer))
 175   (message "Generating cus-load.el...done")
 176   (kill-emacs))
 177
 178 \f
 179 ;;; cus-dep.el ends here