* json.el: Bump version to 1.3; (json-alist-p, json-plist-p): Rewrite to avoid recursion.
[emacs.git] / lisp / cus-dep.el
blob091f832c092b2fc28c39c4a74ee23ede4af1c345
1 ;;; cus-dep.el --- find customization dependencies
2 ;;
3 ;; Copyright (C) 1997, 2001-2011 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 (eval-when-compile (require 'cl))
29 (require 'widget)
30 (require 'cus-face)
32 (defvar generated-custom-dependencies-file "cus-load.el"
33 "Output file for `custom-make-dependencies'.")
35 ;; See finder-no-scan-regexp in finder.el.
36 (defvar custom-dependencies-no-scan-regexp "\\(^\\.#\\|\\(loaddefs\\|\
37 ldefs-boot\\|cus-load\\|finder-inf\\|esh-groups\\|subdirs\\)\\.el$\\)"
38 "Regexp matching file names not to scan for `custom-make-dependencies'.")
40 (autoload 'autoload-rubric "autoload")
42 (defun custom-make-dependencies ()
43 "Batch function to extract custom dependencies from .el files.
44 Usage: emacs -batch -l ./cus-dep.el -f custom-make-dependencies DIRS"
45 (let ((enable-local-eval nil)
46 subdir)
47 (with-temp-buffer
48 ;; Use up command-line-args-left else Emacs can try to open
49 ;; the args as directories after we are done.
50 (while (setq subdir (pop command-line-args-left))
51 (message "Directory %s" subdir)
52 (let ((files (directory-files subdir nil "\\`[^=].*\\.el\\'"))
53 (default-directory (expand-file-name subdir))
54 (preloaded (concat "\\`"
55 (regexp-opt (mapcar
56 (lambda (f)
57 (file-name-sans-extension
58 (file-name-nondirectory f)))
59 preloaded-file-list) t)
60 "\\.el\\'")))
61 (dolist (file files)
62 (unless (or (string-match custom-dependencies-no-scan-regexp file)
63 (string-match preloaded file)
64 (not (file-exists-p file)))
65 (erase-buffer)
66 (insert-file-contents file)
67 (goto-char (point-min))
68 (string-match "\\`\\(.*\\)\\.el\\'" file)
69 (let ((name (file-name-nondirectory (match-string 1 file)))
70 (load-file-name file))
71 (if (save-excursion
72 (re-search-forward
73 (concat "(provide[ \t\n]+\\('\\|(quote[ \t\n]\\)[ \t\n]*"
74 (regexp-quote name) "[ \t\n)]")
75 nil t))
76 (setq name (intern name)))
77 (condition-case nil
78 (while (re-search-forward
79 "^(def\\(custom\\|face\\|group\\)" nil t)
80 (beginning-of-line)
81 (let ((expr (read (current-buffer))))
82 (condition-case nil
83 (let ((custom-dont-initialize t))
84 (eval expr)
85 (put (nth 1 expr) 'custom-where name))
86 (error nil))))
87 (error nil)))))))))
88 (message "Generating %s..." generated-custom-dependencies-file)
89 (set-buffer (find-file-noselect generated-custom-dependencies-file))
90 (setq buffer-undo-list t)
91 (erase-buffer)
92 (insert (autoload-rubric generated-custom-dependencies-file
93 "custom dependencies" t))
94 (search-backward "\f")
95 (mapatoms (lambda (symbol)
96 (let ((members (get symbol 'custom-group))
97 where found)
98 (when members
99 (dolist (member
100 ;; So x and no-x builds won't differ.
101 (sort (mapcar 'car members) 'string<))
102 (setq where (get member 'custom-where))
103 (unless (or (null where)
104 (member where found))
105 (push where found)))
106 (when found
107 (insert "(put '" (symbol-name symbol)
108 " 'custom-loads '")
109 (prin1 (nreverse found) (current-buffer))
110 (insert ")\n"))))))
111 (insert "\
112 ;; These are for handling :version. We need to have a minimum of
113 ;; information so `customize-changed-options' could do its job.
115 ;; For groups we set `custom-version', `group-documentation' and
116 ;; `custom-tag' (which are shown in the customize buffer), so we
117 ;; don't have to load the file containing the group.
119 ;; `custom-versions-load-alist' is an alist that has as car a version
120 ;; number and as elts the files that have variables or faces that
121 ;; contain that version. These files should be loaded before showing
122 ;; the customization buffer that `customize-changed-options'
123 ;; generates.
125 ;; This macro is used so we don't modify the information about
126 ;; variables and groups if it's already set. (We don't know when
127 ;; " (file-name-nondirectory generated-custom-dependencies-file)
128 " is going to be loaded and at that time some of the
129 ;; files might be loaded and some others might not).
130 \(defmacro custom-put-if-not (symbol propname value)
131 `(unless (get ,symbol ,propname)
132 (put ,symbol ,propname ,value)))
135 (let ((version-alist nil))
136 (mapatoms (lambda (symbol)
137 (let ((version (get symbol 'custom-version))
138 where)
139 (when version
140 (setq where (get symbol 'custom-where))
141 (when where
142 (if (or (custom-variable-p symbol)
143 (custom-facep symbol))
144 ;; This means it's a variable or a face.
145 (progn
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 (list version where) version-alist)))
152 ;; This is a group
153 (insert "(custom-put-if-not '" (symbol-name symbol)
154 " 'custom-version ")
155 (prin1 version (current-buffer))
156 (insert ")\n")
157 (insert "(custom-put-if-not '" (symbol-name symbol))
158 (insert " 'group-documentation ")
159 (prin1 (get symbol 'group-documentation) (current-buffer))
160 (insert ")\n")
161 (when (get symbol 'custom-tag)
162 (insert "(custom-put-if-not '" (symbol-name symbol))
163 (insert " 'custom-tag ")
164 (prin1 (get symbol 'custom-tag) (current-buffer))
165 (insert ")\n"))
166 ))))))
168 (insert "\n(defvar custom-versions-load-alist "
169 (if version-alist "'" ""))
170 (prin1 version-alist (current-buffer))
171 (insert "\n \"For internal use by custom.\")\n"))
172 (save-buffer)
173 (message "Generating %s...done" generated-custom-dependencies-file))
177 ;;; cus-dep.el ends here