summaryrefslogtreecommitdiff
path: root/lisp/cus-dep.el
blob: 87dcbbb004f7243421202a541a061d0ef8344354 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
;;; cus-dep.el --- find customization dependencies  -*- lexical-binding: t; -*-
;;
;; Copyright (C) 1997, 2001-2022 Free Software Foundation, Inc.
;;
;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
;; Keywords: internal
;; Package: emacs

;; This file is part of GNU Emacs.

;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:

;;; Code:

(require 'widget)
(require 'cus-face)
(require 'cl-lib)

(defvar generated-custom-dependencies-file "cus-load.el"
  "Output file for `custom-make-dependencies'.")

;; See finder-no-scan-regexp in finder.el.
(defvar custom-dependencies-no-scan-regexp "\\(^\\.#\\|\\(loaddefs\\|\
ldefs-boot\\|cus-load\\|finder-inf\\|esh-groups\\|subdirs\\)\\.el$\\)"
  "Regexp matching file names not to scan for `custom-make-dependencies'.")

(require 'autoload)

;; Hack workaround for bug#14384.
;; Define defcustom-mh as an alias for defcustom, etc.
;; Only do this in batch mode to avoid messing up a normal Emacs session.
;; Alternative would be to load mh-e when making cus-load.
;; (Would be better to split just the necessary parts of mh-e into a
;; separate file and only load that.)
(when (and noninteractive)
  (mapc (lambda (e) (let ((sym (intern (format "%s-mh" e))))
		      (or (fboundp sym)
			  (defalias sym e))))
	'(defcustom defface defgroup)))

(defun custom--get-def (expr)
  (if (not (memq (car-safe expr)
                 '( define-minor-mode define-globalized-minor-mode)))
      expr
    ;; For define-minor-mode, we don't want to evaluate the whole
    ;; expression, because it tends to define functions which aren't
    ;; usable (because they call other functions that were skipped).
    ;; Concretely it gave us an error
    ;; "void-function bug-reference--run-auto-setup"
    ;; when subsequently loading `cus-load.el'.
    (let ((es (list (macroexpand-all expr)))
          defs)
      (while es
        (let ((e (pop es)))
          (pcase e
            (`(progn . ,exps) (setq es (append exps es)))
            (`(custom-declare-variable . ,_) (push e defs)))))
      (macroexp-progn (nreverse defs)))))

(defun custom-make-dependencies ()
  "Batch function to extract custom dependencies from .el files.
Usage: emacs -batch -l ./cus-dep.el -f custom-make-dependencies DIRS"
  (let* ((enable-local-eval nil)
	 (enable-local-variables :safe)
         (preloaded (concat "\\`\\(\\./+\\)?"
                            (regexp-opt preloaded-file-list t)
                            "\\.el\\'"))
         (file-count 0)
         (files
          ;; Use up command-line-args-left else Emacs can try to open
          ;; the args as directories after we are done.
          (cl-loop for subdir = (pop command-line-args-left)
                   while subdir
                   append (mapcar (lambda (f)
                                    (cons subdir f))
                                  (directory-files subdir nil
                                                   "\\`[^=.].*\\.el\\'"))))
	 (progress (make-progress-reporter
                    (byte-compile-info "Scanning files for custom")
                    0 (length files) nil 10)))
    (with-temp-buffer
      (dolist (elem files)
        (let* ((subdir (car elem))
               (file (cdr elem))
               (default-directory
                 (directory-file-name (expand-file-name subdir))))
          (progress-reporter-update progress (setq file-count (1+ file-count)))
          (unless (or (string-match custom-dependencies-no-scan-regexp file)
                      (string-match preloaded (format "%s/%s" subdir file))
                      (not (file-exists-p file)))
            (erase-buffer)
            (kill-all-local-variables)
            (insert-file-contents file)
            (hack-local-variables)
            (goto-char (point-min))
            (string-match "\\`\\(.*\\)\\.el\\'" file)
            (let ((name (or generated-autoload-load-name ; see bug#5277
                            (file-name-nondirectory (match-string 1 file))))
                  (load-true-file-name file)
                  (load-file-name file))
              (if (save-excursion
                    (re-search-forward
		     (concat "(\\(cc-\\)?provide[ \t\n]+\\('\\|(quote[ \t\n]\\)[ \t\n]*"
			     (regexp-quote name) "[ \t\n)]")
		     nil t))
                  (setq name (intern name)))
              (condition-case nil
                  (while (re-search-forward
                          "^(def\\(custom\\|face\\|group\\|ine\\(?:-globalized\\)?-minor-mode\\)" nil t)
                    (beginning-of-line)
                    (let ((type (match-string 1))
			  (expr (custom--get-def (read (current-buffer)))))
                      (condition-case nil
                          (let ((custom-dont-initialize t)
                                (sym (nth 1 expr)))
                            (put (if (eq (car-safe sym) 'quote)
                                     (cadr sym)
                                   sym)
                                 'custom-where name)
                            ;; Eval to get the 'custom-group, -tag,
                            ;; -version, group-documentation etc properties.
                            (eval expr t))
                        ;; Eval failed for some reason.  Eg maybe the
                        ;; defcustom uses something defined earlier
                        ;; in the file (we haven't loaded the file).
                        ;; In most cases, we can still get the :group.
                        (error
                         (ignore-errors
                           (let ((group (cadr (memq :group expr))))
                             (and group
                                  (eq (car group) 'quote)
                                  (custom-add-to-group
                                   (cadr group)
                                   (nth 1 expr)
                                   (intern (format "custom-%s"
                                                   (if (equal type "custom")
                                                       "variable"
                                                     type)))))))))))
                (error nil)))))))
    (progress-reporter-done progress))
  (byte-compile-info
   (format "Generating %s..." generated-custom-dependencies-file) t)
  (set-buffer (find-file-noselect generated-custom-dependencies-file))
  (setq buffer-undo-list t)
  (erase-buffer)
  (insert (autoload-rubric generated-custom-dependencies-file
                           "custom dependencies" t))
  (search-backward "")
  (let (alist)
    (mapatoms (lambda (symbol)
		(let ((members (get symbol 'custom-group))
		      where found)
		  (when members
		    (dolist (member (mapcar #'car members))
		      (setq where (get member 'custom-where))
		      (unless (or (null where)
				  (member where found))
			(push where found)))
		    (when found
		      (push (cons (symbol-name symbol)
				  (with-output-to-string
				    (prin1 (sort found #'string<))))
			    alist))))))
    (dolist (e (sort alist (lambda (e1 e2) (string< (car e1) (car e2)))))
      (insert "(put '" (car e) " 'custom-loads '" (cdr e) ")\n")))
  (insert "\

;; The remainder of this file is for handling :version.
;; We provide a minimum of information so that `customize-changed'
;; can do its job.

;; For groups we set `custom-version', `group-documentation' and
;; `custom-tag' (which are shown in the customize buffer), so we
;; don't have to load the file containing the group.

;; This macro is used so we don't modify the information about
;; variables and groups if it's already set. (We don't know when
;; " (file-name-nondirectory generated-custom-dependencies-file)
      " is going to be loaded and at that time some of the
;; files might be loaded and some others might not).
\(defmacro custom-put-if-not (symbol propname value)
  `(unless (get ,symbol ,propname)
     (put ,symbol ,propname ,value)))

")
  (let ((version-alist nil)
	groups)
    (mapatoms (lambda (symbol)
		(let ((version (get symbol 'custom-version))
		      where)
		  (when version
		    (setq where (get symbol 'custom-where))
		    (when where
		      (if (or (custom-variable-p symbol)
                              (facep symbol))
			  ;; This means it's a variable or a face.
			  (progn
			    (if (assoc version version-alist)
				(unless
				    (member where
					    (cdr (assoc version version-alist)))
				  (push where (cdr (assoc version version-alist))))
			      (push (list version where) version-alist)))
			;; This is a group
			(push (list (symbol-name symbol)
				    (with-output-to-string (prin1 version))
				    (with-output-to-string
				      (prin1 (get symbol 'group-documentation)))
				    (if (get symbol 'custom-tag)
					(with-output-to-string
					  (prin1 (get symbol 'custom-tag)))))
			      groups)))))))
    (dolist (e (sort groups (lambda (e1 e2) (string< (car e1) (car e2)))))
      (insert "(custom-put-if-not '" (car e) " 'custom-version '"
	      (nth 1 e) ")\n")
      (insert "(custom-put-if-not '" (car e) " 'group-documentation "
	      (nth 2 e) ")\n")
      (if (nth 3 e)
	  (insert "(custom-put-if-not '" (car e) " 'custom-tag "
		  (nth 3 e) ")\n")))

    (insert "\n(defvar custom-versions-load-alist "
	    (if version-alist "'" ""))
    (prin1 (sort version-alist (lambda (e1 e2) (version< (car e1) (car e2))))
	   (current-buffer))
    (insert "\n  \"For internal use by custom.
This is an alist whose members have as car a version string, and as
elements the files that have variables or faces that contain that
version.  These files should be loaded before showing the customization
buffer that `customize-changed' generates.\")\n\n"))
  (save-buffer)
  (byte-compile-info
   (format "Generating %s...done" generated-custom-dependencies-file) t))


(provide 'cus-dep)

;;; cus-dep.el ends here