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
  33 (defun custom-make-dependencies ()
  34   "Batch function to extract custom dependencies from .el files.
  35 Usage: emacs -batch -l ./cus-dep.el -f custom-make-dependencies DIRS"
  36   (let ((enable-local-eval nil))
  37     (set-buffer (get-buffer-create " cus-dep temp"))
  38     (dolist (subdir command-line-args-left)
  39       (message "Directory %s" subdir)
  40       (let ((files (directory-files subdir nil "\\`[^=].*\\.el\\'"))
  41             (default-directory (expand-file-name subdir))
  42             (preloaded (concat "\\`"
  43                                (regexp-opt (mapcar
  44                                             (lambda (f)
  45                                               (file-name-sans-extension
  46                                                (file-name-nondirectory f)))
  47                                             preloaded-file-list) t)
  48                                "\\.el\\'")))
  49         (dolist (file files)
  50           (when (and (file-exists-p file)
  51                      ;; Ignore files that are preloaded.
  52                      (not (string-match preloaded 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                   (load-file-name file))
  59               (if (save-excursion
  60                     (re-search-forward
  61                      (concat "(provide[ \t\n]+\\('\\|(quote[ \t\n]\\)[ \t\n]*"
  62                              (regexp-quote name) "[ \t\n)]")
  63                      nil t))
  64                   (setq name (intern name)))
  65               (condition-case nil
  66                   (while (re-search-forward
  67                           "^(def\\(custom\\|face\\|group\\)" nil t)
  68                     (beginning-of-line)
  69                     (let ((expr (read (current-buffer))))
  70                       (condition-case nil
  71                           (let ((custom-dont-initialize t))
  72                             (eval expr)
  73                             (put (nth 1 expr) 'custom-where name))
  74                         (error nil))))
  75                 (error nil))))))))
  76   (message "Generating cus-load.el...")
  77   (set-buffer (find-file-noselect "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                   ;; So x and no-x builds won't differ.
  90                   (setq members
  91                         (sort (copy-sequence members)
  92                               (lambda (x y) (string< (car x) (car y)))))
  93                   (while members
  94                     (setq item (car (car members))
  95                           members (cdr members)
  96                           where (get item 'custom-where))
  97                     (unless (or (null where)
  98                                 (member where found))
  99                       (if found
 100                           (insert " ")
 101                         (insert "(put '" (symbol-name symbol)
 102                                 " 'custom-loads '("))
 103                       (prin1 where (current-buffer))
 104                       (push where found)))
 105                   (when found
 106                     (insert "))\n"))))))
 107   (insert "\
 108 ;;; These are for handling :version.  We need to have a minimum of
 109 ;;; information so `customize-changed-options' could do its job.
 110 ;;; For both groups and variables we have to set `custom-version'.
 111 ;;; For variables we also set the `standard-value' and for groups
 112 ;;; `group-documentation' (which is shown in the customize buffer), so
 113 ;;; we don't have to load the file containing the group.
 114
 115 ;;; `custom-versions-load-alist' is an alist that has as car a version
 116 ;;; number and as elts the files that have variables that contain that
 117 ;;; version. These files should be loaded before showing the
 118 ;;; customization buffer that `customize-changed-options' generates.
 119
 120
 121 ;;; This macro is used so we don't modify the information about
 122 ;;; variables and groups if it's already set. (We don't know when
 123 ;;; cus-load.el is going to be loaded and at that time some of the
 124 ;;; files might be loaded and some others might not).
 125 \(defmacro custom-put-if-not (symbol propname value)
 126   `(unless (get ,symbol ,propname)
 127      (put ,symbol ,propname ,value)))
 128
 129 ")
 130   (let ((version-alist nil))
 131     (mapatoms (lambda (symbol)
 132                 (let ((version (get symbol 'custom-version))
 133                       where)
 134                   (when version
 135                     (setq where (get symbol 'custom-where))
 136                     (when where
 137                       (insert "(custom-put-if-not '" (symbol-name symbol)
 138                               " 'custom-version ")
 139                       (prin1 version (current-buffer))
 140                       (insert ")\n")
 141                       (insert "(custom-put-if-not '" (symbol-name symbol))
 142                       (if (get symbol 'standard-value)
 143                           ;; This means it's a variable
 144                           (progn
 145                             (insert " 'standard-value t)\n")
 146                             (if (assoc version version-alist)
 147                                 (unless
 148                                     (member where
 149                                             (cdr (assoc version version-alist)))
 150                                   (push where (cdr (assoc version version-alist))))
 151                               (push (cons version (list where)) version-alist)))
 152                         ;; This is a group
 153                         (insert " 'group-documentation ")
 154                         (prin1 (get symbol 'group-documentation) (current-buffer))
 155                         (insert ")\n")))))))
 156
 157     (insert "\n(defvar custom-versions-load-alist "
 158             (if version-alist "'" ""))
 159     (prin1 version-alist (current-buffer))
 160     (insert "\n \"For internal use by custom.\")\n"))
 161
 162   (insert "\
 163
 164 \(provide 'cus-load)
 165
 166 ;;; Local Variables:
 167 ;;; version-control: never
 168 ;;; no-byte-compile: t
 169 ;;; no-update-autoloads: t
 170 ;;; End:
 171 ;;; cus-load.el ends here\n")
 172   (let ((kept-new-versions 10000000))
 173     (save-buffer))
 174   (message "Generating cus-load.el...done")
 175   (kill-emacs))
 176
 177 \f
 178 ;;; cus-dep.el ends here