* src/editfns.c (Fmessage): Mention message-log-max. (Bug#12849)
[emacs.git] / lisp / cus-dep.el
blobbfe3ae36c7eba0348978468cb18e0a0919ada4da
1 ;;; cus-dep.el --- find customization dependencies
2 ;;
3 ;; Copyright (C) 1997, 2001-2012 Free Software Foundation, Inc.
4 ;;
5 ;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
6 ;; Keywords: internal
7 ;; Package: emacs
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
24 ;;; Commentary:
26 ;;; Code:
28 (require 'widget)
29 (require 'cus-face)
31 (defvar generated-custom-dependencies-file "cus-load.el"
32 "Output file for `custom-make-dependencies'.")
34 ;; See finder-no-scan-regexp in finder.el.
35 (defvar custom-dependencies-no-scan-regexp "\\(^\\.#\\|\\(loaddefs\\|\
36 ldefs-boot\\|cus-load\\|finder-inf\\|esh-groups\\|subdirs\\)\\.el$\\)"
37 "Regexp matching file names not to scan for `custom-make-dependencies'.")
39 (autoload 'autoload-rubric "autoload")
41 (defun custom-make-dependencies ()
42 "Batch function to extract custom dependencies from .el files.
43 Usage: emacs -batch -l ./cus-dep.el -f custom-make-dependencies DIRS"
44 (let ((enable-local-eval nil)
45 subdir)
46 (with-temp-buffer
47 ;; Use up command-line-args-left else Emacs can try to open
48 ;; the args as directories after we are done.
49 (while (setq subdir (pop command-line-args-left))
50 (message "Directory %s" subdir)
51 (let ((files (directory-files subdir nil "\\`[^=].*\\.el\\'"))
52 (default-directory (expand-file-name subdir))
53 (preloaded (concat "\\`"
54 (regexp-opt (mapcar
55 'file-name-base
56 preloaded-file-list) t)
57 "\\.el\\'")))
58 (dolist (file files)
59 (unless (or (string-match custom-dependencies-no-scan-regexp file)
60 (string-match preloaded file)
61 (not (file-exists-p file)))
62 (erase-buffer)
63 (insert-file-contents file)
64 (goto-char (point-min))
65 (string-match "\\`\\(.*\\)\\.el\\'" file)
66 (let ((name (file-name-nondirectory (match-string 1 file)))
67 (load-file-name file))
68 (if (save-excursion
69 (re-search-forward
70 (concat "(provide[ \t\n]+\\('\\|(quote[ \t\n]\\)[ \t\n]*"
71 (regexp-quote name) "[ \t\n)]")
72 nil t))
73 (setq name (intern name)))
74 (condition-case nil
75 (while (re-search-forward
76 "^(def\\(custom\\|face\\|group\\)" nil t)
77 (beginning-of-line)
78 (let ((expr (read (current-buffer))))
79 (condition-case nil
80 (let ((custom-dont-initialize t))
81 (eval expr)
82 (put (nth 1 expr) 'custom-where name))
83 (error nil))))
84 (error nil)))))))))
85 (message "Generating %s..." generated-custom-dependencies-file)
86 (set-buffer (find-file-noselect generated-custom-dependencies-file))
87 (setq buffer-undo-list t)
88 (erase-buffer)
89 (insert (autoload-rubric generated-custom-dependencies-file
90 "custom dependencies" t))
91 (search-backward "\f")
92 (mapatoms (lambda (symbol)
93 (let ((members (get symbol 'custom-group))
94 where found)
95 (when members
96 (dolist (member
97 ;; So x and no-x builds won't differ.
98 (sort (mapcar 'car members) 'string<))
99 (setq where (get member 'custom-where))
100 (unless (or (null where)
101 (member where found))
102 (push where found)))
103 (when found
104 (insert "(put '" (symbol-name symbol)
105 " 'custom-loads '")
106 (prin1 (nreverse found) (current-buffer))
107 (insert ")\n"))))))
108 (insert "\
109 ;; These are for handling :version. We need to have a minimum of
110 ;; information so `customize-changed-options' could do its job.
112 ;; For groups we set `custom-version', `group-documentation' and
113 ;; `custom-tag' (which are shown in the customize buffer), so we
114 ;; don't have to load the file containing the group.
116 ;; `custom-versions-load-alist' is an alist that has as car a version
117 ;; number and as elts the files that have variables or faces that
118 ;; contain that version. These files should be loaded before showing
119 ;; the customization buffer that `customize-changed-options'
120 ;; generates.
122 ;; This macro is used so we don't modify the information about
123 ;; variables and groups if it's already set. (We don't know when
124 ;; " (file-name-nondirectory generated-custom-dependencies-file)
125 " is going to be loaded and at that time some of the
126 ;; files might be loaded and some others might not).
127 \(defmacro custom-put-if-not (symbol propname value)
128 `(unless (get ,symbol ,propname)
129 (put ,symbol ,propname ,value)))
132 (let ((version-alist nil))
133 (mapatoms (lambda (symbol)
134 (let ((version (get symbol 'custom-version))
135 where)
136 (when version
137 (setq where (get symbol 'custom-where))
138 (when where
139 (if (or (custom-variable-p symbol)
140 (custom-facep symbol))
141 ;; This means it's a variable or a face.
142 (progn
143 (if (assoc version version-alist)
144 (unless
145 (member where
146 (cdr (assoc version version-alist)))
147 (push where (cdr (assoc version version-alist))))
148 (push (list version where) version-alist)))
149 ;; This is a group
150 (insert "(custom-put-if-not '" (symbol-name symbol)
151 " 'custom-version ")
152 (prin1 version (current-buffer))
153 (insert ")\n")
154 (insert "(custom-put-if-not '" (symbol-name symbol))
155 (insert " 'group-documentation ")
156 (prin1 (get symbol 'group-documentation) (current-buffer))
157 (insert ")\n")
158 (when (get symbol 'custom-tag)
159 (insert "(custom-put-if-not '" (symbol-name symbol))
160 (insert " 'custom-tag ")
161 (prin1 (get symbol 'custom-tag) (current-buffer))
162 (insert ")\n"))
163 ))))))
165 (insert "\n(defvar custom-versions-load-alist "
166 (if version-alist "'" ""))
167 (prin1 version-alist (current-buffer))
168 (insert "\n \"For internal use by custom.\")\n"))
169 (save-buffer)
170 (message "Generating %s...done" generated-custom-dependencies-file))
174 ;;; cus-dep.el ends here