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 ;;; Code:
  26
  27 (require 'cl)
  28 (require 'widget)
  29 (require 'cus-face)
  30 (require 'autoload)
  31
  32 (defun custom-make-dependencies ()
  33   "Batch function to extract custom dependencies from .el files.
  34 Usage: emacs -batch -l ./cus-dep.el -f custom-make-dependencies DIRS"
  35   (let ((enable-local-eval nil)
  36         (all-subdirs command-line-args-left)
  37         (start-directory default-directory))
  38     (get-buffer-create " cus-dep temp")
  39     (set-buffer " cus-dep temp")
  40     (while all-subdirs
  41       (message "Directory %s" (car all-subdirs))
  42       (let ((files (directory-files (car all-subdirs) nil "\\`[^=].*\\.el\\'"))
  43             (default-directory default-directory)
  44             file
  45             is-autoloaded)
  46         (cd (car all-subdirs))
  47         (while files
  48           (setq file (car files)
  49                 files (cdr files))
  50           (when (file-exists-p file)
  51             (erase-buffer)
  52             (insert-file-contents file)
  53             (goto-char (point-min))
  54             (string-match "\\`\\(.*\\)\\.el\\'" file)
  55             (let ((name (file-name-nondirectory (match-string 1 file))))
  56               (condition-case nil
  57                   (while (re-search-forward "^(defcustom\\|^(defface\\|^(defgroup"
  58                                             nil t)
  59                     (setq is-autoloaded nil)
  60                     (beginning-of-line)
  61                     (save-excursion
  62                       (forward-line -1)
  63                       (if (looking-at generate-autoload-cookie)
  64                           (setq is-autoloaded t)))
  65                     (let ((expr (read (current-buffer))))
  66                       (condition-case nil
  67                           (progn
  68                             (eval expr)
  69                             (put (nth 1 expr) 'custom-autoloaded is-autoloaded)
  70                             (put (nth 1 expr) 'custom-where name))
  71                         (error nil))))
  72                 (error nil)))))
  73         (setq all-subdirs (cdr all-subdirs)))))
  74   (message "Generating cus-load.el...")
  75   (find-file "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                   (while members
  88                     (setq item (car (car members))
  89                           members (cdr members)
  90                           where (get item 'custom-where))
  91                     (unless (or (null where)
  92                                 (member where found))
  93                       (if found
  94                           (insert " ")
  95                         (insert "(put '" (symbol-name symbol)
  96                                 " 'custom-loads '("))
  97                       (prin1 where (current-buffer))
  98                       (push where found)))
  99                   (when found
 100                     (insert "))\n"))))))
 101   (insert "\
 102 ;;; These are for handling :version.  We need to have a minimum of
 103 ;;; information so `custom-changed-variables' could do its job.
 104 ;;; For both groups and variables we have to set `custom-version'.
 105 ;;; For variables we also set the `standard-value' and for groups
 106 ;;; `group-documentation' (which is shown in the customize buffer), so
 107 ;;; we don't have to load the file containing the group.
 108
 109 ;;; `custom-versions-load-alist' is an alist that has as car a version
 110 ;;; number and as elts the files that have variables that contain that
 111 ;;; version. These files should be loaded before showing the
 112 ;;; customization buffer that `customize-changed-options' generates.
 113
 114
 115 ;;; This macro is used so we don't modify the information about
 116 ;;; variables and groups if it's already set. (We don't know when
 117 ;;; cus-load.el is going to be loaded and at that time some of the
 118 ;;; files might be loaded and some others might not).
 119 (defmacro custom-put-if-not (symbol propname value)
 120   `(unless (get ,symbol ,propname)
 121      (put ,symbol ,propname ,value)))
 122
 123 ")
 124   (let ((version-alist nil))
 125     (mapatoms (lambda (symbol)
 126                 (let ((version (get symbol 'custom-version))
 127                       where)
 128                   (when version
 129                     (setq where (get symbol 'custom-where))
 130                     (when (and where
 131                                ;; Don't bother to do anything if it's
 132                                ;; autoloaded because we will have all
 133                                ;; this info when emacs is running
 134                                ;; anyway.
 135                                (not (get symbol 'custom-autoloaded)))
 136                       (insert "(custom-put-if-not '" (symbol-name symbol)
 137                               " 'custom-version ")
 138                       (prin1 version (current-buffer))
 139                       (insert ")\n")
 140                       (insert "(custom-put-if-not '" (symbol-name symbol))
 141                       (if (get symbol 'standard-value)
 142                           ;; This means it's a variable
 143                           (progn
 144                             (insert " 'standard-value t)\n")
 145                             (if (assoc version version-alist)
 146                                 (unless
 147                                     (member where
 148                                             (cdr (assoc version version-alist)))
 149                                   (push where (cdr (assoc version version-alist))))
 150                               (push (cons version (list where)) version-alist)))
 151                         ;; This is a group
 152                         (insert " 'group-documentation ")
 153                         (prin1 (get symbol 'group-documentation) (current-buffer))
 154                         (insert ")\n")))))))
 155
 156     (insert "\n(defvar custom-versions-load-alist "
 157             (if version-alist "'" ""))
 158     (prin1 version-alist (current-buffer))
 159     (insert "\n \"For internal use by custom.\")\n"))
 160
 161   (insert "\
 162
 163 \(provide 'cus-load)
 164
 165 ;;; cus-load.el ends here\n")
 166   (let ((kept-new-versions 10000000))
 167     (save-buffer))
 168   (message "Generating cus-load.el...done")
 169   (kill-emacs))
 170
 171 ;;; cus-dep.el ends here