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[emacs.git] / lisp / cus-dep.el
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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
8 ;; This file is part of GNU Emacs.
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.
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.
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.
25 ;;; Code:
27 (eval-when-compile (require 'cl))
28 (require 'widget)
29 (require 'cus-face)
30 (require 'autoload)
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
80 ;;; Code:
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.
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.
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)))
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")))))))
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"))
161 (insert "\
163 \(provide 'cus-load)
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))
171 ;;; cus-dep.el ends here