mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-27 10:54:40 +00:00
508 lines
18 KiB
EmacsLisp
508 lines
18 KiB
EmacsLisp
;;; autoload.el --- maintain autoloads in loaddefs.el.
|
||
|
||
;; Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
|
||
|
||
;; Author: Roland McGrath <roland@gnu.ai.mit.edu>
|
||
;; Keywords: maint
|
||
|
||
;; 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 2, 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; see the file COPYING. If not, write to the
|
||
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||
;; Boston, MA 02111-1307, USA.
|
||
|
||
;;; Commentary:
|
||
|
||
;; This code helps GNU Emacs maintainers keep the loaddefs.el file up to
|
||
;; date. It interprets magic cookies of the form ";;;###autoload" in
|
||
;; lisp source files in various useful ways. To learn more, read the
|
||
;; source; if you're going to use this, you'd better be able to.
|
||
|
||
;;; Code:
|
||
|
||
(defvar generated-autoload-file "loaddefs.el"
|
||
"*File \\[update-file-autoloads] puts autoloads into.
|
||
A `.el' file can set this in its local variables section to make its
|
||
autoloads go somewhere else.")
|
||
|
||
(defconst generate-autoload-cookie ";;;###autoload"
|
||
"Magic comment indicating the following form should be autoloaded.
|
||
Used by \\[update-file-autoloads]. This string should be
|
||
meaningless to Lisp (e.g., a comment).
|
||
|
||
This string is used:
|
||
|
||
;;;###autoload
|
||
\(defun function-to-be-autoloaded () ...)
|
||
|
||
If this string appears alone on a line, the following form will be
|
||
read and an autoload made for it. If there is further text on the line,
|
||
that text will be copied verbatim to `generated-autoload-file'.")
|
||
|
||
(defconst generate-autoload-section-header "\f\n;;;### "
|
||
"String that marks the form at the start of a new file's autoload section.")
|
||
|
||
(defconst generate-autoload-section-trailer "\n;;;***\n"
|
||
"String which indicates the end of the section of autoloads for a file.")
|
||
|
||
(defconst generate-autoload-section-continuation ";;;;;; "
|
||
"String to add on each continuation of the section header form.")
|
||
|
||
(defun make-autoload (form file)
|
||
"Turn FORM into an autoload or defvar for source file FILE.
|
||
Returns nil if FORM is not a `defun', `define-skeleton',
|
||
`define-derived-mode', `define-generic-mode', `defmacro', `defcustom'
|
||
or `easy-mmode-define-minor-mode'."
|
||
(let ((car (car-safe form)))
|
||
(if (memq car '(defun define-skeleton defmacro define-derived-mode
|
||
define-generic-mode easy-mmode-define-minor-mode))
|
||
(let ((macrop (eq car 'defmacro))
|
||
name doc)
|
||
(setq form (cdr form)
|
||
name (car form)
|
||
;; Ignore the arguments.
|
||
form (cdr (cond
|
||
((memq car '(define-skeleton
|
||
easy-mmode-define-minor-mode)) form)
|
||
((eq car 'define-derived-mode) (cdr (cdr form)))
|
||
((eq car 'define-generic-mode)
|
||
(cdr (cdr (cdr (cdr (cdr form))))))
|
||
(t (cdr form))))
|
||
doc (car form))
|
||
(if (stringp doc)
|
||
(setq form (cdr form))
|
||
(setq doc nil))
|
||
;; `define-generic-mode' quotes the name, so take care of that
|
||
(list 'autoload (if (listp name) name (list 'quote name)) file doc
|
||
(or (eq car 'define-skeleton) (eq car 'define-derived-mode)
|
||
(eq car 'define-generic-mode)
|
||
(eq car 'easy-mmode-define-minor-mode)
|
||
(eq (car-safe (car form)) 'interactive))
|
||
(if macrop (list 'quote 'macro) nil)))
|
||
;; Convert defcustom to a simpler (and less space-consuming) defvar,
|
||
;; but add some extra stuff if it uses :require.
|
||
(if (eq car 'defcustom)
|
||
(let ((varname (car-safe (cdr-safe form)))
|
||
(init (car-safe (cdr-safe (cdr-safe form))))
|
||
(doc (car-safe (cdr-safe (cdr-safe (cdr-safe form)))))
|
||
(rest (cdr-safe (cdr-safe (cdr-safe (cdr-safe form))))))
|
||
(if (not (plist-get rest :require))
|
||
`(defvar ,varname ,init ,doc)
|
||
`(progn
|
||
(defvar ,varname ,init ,doc)
|
||
(custom-add-to-group ,(plist-get rest :group)
|
||
',varname 'custom-variable)
|
||
(custom-add-load ',varname
|
||
,(plist-get rest :require)))))
|
||
nil))))
|
||
|
||
;;; Forms which have doc-strings which should be printed specially.
|
||
;;; A doc-string-elt property of ELT says that (nth ELT FORM) is
|
||
;;; the doc-string in FORM.
|
||
;;;
|
||
;;; There used to be the following note here:
|
||
;;; ;;; Note: defconst and defvar should NOT be marked in this way.
|
||
;;; ;;; We don't want to produce defconsts and defvars that
|
||
;;; ;;; make-docfile can grok, because then it would grok them twice,
|
||
;;; ;;; once in foo.el (where they are given with ;;;###autoload) and
|
||
;;; ;;; once in loaddefs.el.
|
||
;;;
|
||
;;; Counter-note: Yes, they should be marked in this way.
|
||
;;; make-docfile only processes those files that are loaded into the
|
||
;;; dumped Emacs, and those files should never have anything
|
||
;;; autoloaded here. The above-feared problem only occurs with files
|
||
;;; which have autoloaded entries *and* are processed by make-docfile;
|
||
;;; there should be no such files.
|
||
|
||
(put 'autoload 'doc-string-elt 3)
|
||
(put 'defun 'doc-string-elt 3)
|
||
(put 'defvar 'doc-string-elt 3)
|
||
(put 'defcustom 'doc-string-elt 3)
|
||
(put 'defconst 'doc-string-elt 3)
|
||
(put 'defmacro 'doc-string-elt 3)
|
||
(put 'define-skeleton 'doc-string-elt 3)
|
||
(put 'define-derived-mode 'doc-string-elt 3)
|
||
(put 'easy-mmode-define-minor-mode 'doc-string-elt 3)
|
||
(put 'define-generic-mode 'doc-string-elt 3)
|
||
|
||
|
||
(defun autoload-trim-file-name (file)
|
||
;; Returns a relative pathname of FILE
|
||
;; starting from the directory that loaddefs.el is in.
|
||
;; That is normally a directory in load-path,
|
||
;; which means Emacs will be able to find FILE when it looks.
|
||
;; Any extra directory names here would prevent finding the file.
|
||
(setq file (expand-file-name file))
|
||
(file-relative-name file
|
||
(file-name-directory generated-autoload-file)))
|
||
|
||
(defun autoload-read-section-header ()
|
||
"Read a section header form.
|
||
Since continuation lines have been marked as comments,
|
||
we must copy the text of the form and remove those comment
|
||
markers before we call `read'."
|
||
(save-match-data
|
||
(let ((beginning (point))
|
||
string)
|
||
(forward-line 1)
|
||
(while (looking-at generate-autoload-section-continuation)
|
||
(forward-line 1))
|
||
(setq string (buffer-substring beginning (point)))
|
||
(with-current-buffer (get-buffer-create " *autoload*")
|
||
(erase-buffer)
|
||
(insert string)
|
||
(goto-char (point-min))
|
||
(while (search-forward generate-autoload-section-continuation nil t)
|
||
(replace-match " "))
|
||
(goto-char (point-min))
|
||
(read (current-buffer))))))
|
||
|
||
(defun generate-file-autoloads (file)
|
||
"Insert at point a loaddefs autoload section for FILE.
|
||
autoloads are generated for defuns and defmacros in FILE
|
||
marked by `generate-autoload-cookie' (which see).
|
||
If FILE is being visited in a buffer, the contents of the buffer
|
||
are used."
|
||
(interactive "fGenerate autoloads for file: ")
|
||
(let ((outbuf (current-buffer))
|
||
(autoloads-done '())
|
||
(load-name (let ((name (file-name-nondirectory file)))
|
||
(if (string-match "\\.elc?$" name)
|
||
(substring name 0 (match-beginning 0))
|
||
name)))
|
||
(print-length nil)
|
||
(print-readably t) ; This does something in Lucid Emacs.
|
||
(float-output-format nil)
|
||
(done-any nil)
|
||
(visited (get-file-buffer file))
|
||
output-end)
|
||
|
||
;; If the autoload section we create here uses an absolute
|
||
;; pathname for FILE in its header, and then Emacs is installed
|
||
;; under a different path on another system,
|
||
;; `update-autoloads-here' won't be able to find the files to be
|
||
;; autoloaded. So, if FILE is in the same directory or a
|
||
;; subdirectory of the current buffer's directory, we'll make it
|
||
;; relative to the current buffer's directory.
|
||
(setq file (expand-file-name file))
|
||
(let* ((source-truename (file-truename file))
|
||
(dir-truename (file-name-as-directory
|
||
(file-truename default-directory)))
|
||
(len (length dir-truename)))
|
||
(if (and (< len (length source-truename))
|
||
(string= dir-truename (substring source-truename 0 len)))
|
||
(setq file (substring source-truename len))))
|
||
|
||
(message "Generating autoloads for %s..." file)
|
||
(save-excursion
|
||
(unwind-protect
|
||
(progn
|
||
(if visited
|
||
(set-buffer visited)
|
||
;; It is faster to avoid visiting the file.
|
||
(set-buffer (get-buffer-create " *generate-autoload-file*"))
|
||
(kill-all-local-variables)
|
||
(erase-buffer)
|
||
(setq buffer-undo-list t
|
||
buffer-read-only nil)
|
||
(emacs-lisp-mode)
|
||
(insert-file-contents file nil))
|
||
(save-excursion
|
||
(save-restriction
|
||
(widen)
|
||
(goto-char (point-min))
|
||
(while (not (eobp))
|
||
(skip-chars-forward " \t\n\f")
|
||
(cond
|
||
((looking-at (regexp-quote generate-autoload-cookie))
|
||
(search-forward generate-autoload-cookie)
|
||
(skip-chars-forward " \t")
|
||
(setq done-any t)
|
||
(if (eolp)
|
||
;; Read the next form and make an autoload.
|
||
(let* ((form (prog1 (read (current-buffer))
|
||
(or (bolp) (forward-line 1))))
|
||
(autoload-1 (make-autoload form load-name))
|
||
(autoload (if (eq (car autoload-1) 'progn)
|
||
(cadr autoload-1)
|
||
autoload-1))
|
||
(doc-string-elt (get (car-safe form)
|
||
'doc-string-elt)))
|
||
(if autoload
|
||
(setq autoloads-done (cons (nth 1 form)
|
||
autoloads-done))
|
||
(setq autoload form))
|
||
(if (and doc-string-elt
|
||
(stringp (nth doc-string-elt autoload)))
|
||
;; We need to hack the printing because the
|
||
;; doc-string must be printed specially for
|
||
;; make-docfile (sigh).
|
||
(let* ((p (nthcdr (1- doc-string-elt)
|
||
autoload))
|
||
(elt (cdr p)))
|
||
(setcdr p nil)
|
||
(princ "\n(" outbuf)
|
||
(let ((print-escape-newlines t)
|
||
(print-escape-nonascii t))
|
||
(mapcar (function (lambda (elt)
|
||
(prin1 elt outbuf)
|
||
(princ " " outbuf)))
|
||
autoload))
|
||
(princ "\"\\\n" outbuf)
|
||
(let ((begin (save-excursion
|
||
(set-buffer outbuf)
|
||
(point))))
|
||
(princ (substring
|
||
(prin1-to-string (car elt)) 1)
|
||
outbuf)
|
||
;; Insert a backslash before each ( that
|
||
;; appears at the beginning of a line in
|
||
;; the doc string.
|
||
(save-excursion
|
||
(set-buffer outbuf)
|
||
(save-excursion
|
||
(while (search-backward "\n(" begin t)
|
||
(forward-char 1)
|
||
(insert "\\"))))
|
||
(if (null (cdr elt))
|
||
(princ ")" outbuf)
|
||
(princ " " outbuf)
|
||
(princ (substring
|
||
(prin1-to-string (cdr elt))
|
||
1)
|
||
outbuf))
|
||
(terpri outbuf)))
|
||
(let ((print-escape-newlines t)
|
||
(print-escape-nonascii t))
|
||
(print autoload outbuf)))
|
||
(if (eq (car autoload-1) 'progn)
|
||
;; Print the rest of the form
|
||
(let ((print-escape-newlines t)
|
||
(print-escape-nonascii t))
|
||
(mapcar (function (lambda (elt)
|
||
(print elt outbuf)))
|
||
(cddr autoload-1)))))
|
||
;; Copy the rest of the line to the output.
|
||
(princ (buffer-substring
|
||
(progn
|
||
;; Back up over whitespace, to preserve it.
|
||
(skip-chars-backward " \f\t")
|
||
(if (= (char-after (1+ (point))) ? )
|
||
;; Eat one space.
|
||
(forward-char 1))
|
||
(point))
|
||
(progn (forward-line 1) (point)))
|
||
outbuf)))
|
||
((looking-at ";")
|
||
;; Don't read the comment.
|
||
(forward-line 1))
|
||
(t
|
||
(forward-sexp 1)
|
||
(forward-line 1)))))))
|
||
(or visited
|
||
;; We created this buffer, so we should kill it.
|
||
(kill-buffer (current-buffer)))
|
||
(set-buffer outbuf)
|
||
(setq output-end (point-marker))))
|
||
(if done-any
|
||
(progn
|
||
;; Insert the section-header line
|
||
;; which lists the file name and which functions are in it, etc.
|
||
(insert generate-autoload-section-header)
|
||
(prin1 (list 'autoloads autoloads-done load-name
|
||
(autoload-trim-file-name file)
|
||
(nth 5 (file-attributes file)))
|
||
outbuf)
|
||
(terpri outbuf)
|
||
;; Break that line at spaces, to avoid very long lines.
|
||
;; Make each sub-line into a comment.
|
||
(with-current-buffer outbuf
|
||
(save-excursion
|
||
(forward-line -1)
|
||
(while (not (eolp))
|
||
(move-to-column 64)
|
||
(skip-chars-forward "^ \n")
|
||
(or (eolp)
|
||
(insert "\n" generate-autoload-section-continuation)))))
|
||
(insert ";;; Generated autoloads from "
|
||
(autoload-trim-file-name file) "\n")
|
||
;; Warn if we put a line in loaddefs.el
|
||
;; that is long enough to cause trouble.
|
||
(while (< (point) output-end)
|
||
(let ((beg (point)))
|
||
(end-of-line)
|
||
(if (> (- (point) beg) 900)
|
||
(progn
|
||
(message "A line is too long--over 900 characters")
|
||
(sleep-for 2)
|
||
(goto-char output-end))))
|
||
(forward-line 1))
|
||
(goto-char output-end)
|
||
(insert generate-autoload-section-trailer)))
|
||
(message "Generating autoloads for %s...done" file)))
|
||
|
||
;;;###autoload
|
||
(defun update-file-autoloads (file)
|
||
"Update the autoloads for FILE in `generated-autoload-file'
|
||
\(which FILE might bind in its local variables)."
|
||
(interactive "fUpdate autoloads for file: ")
|
||
(let ((load-name (let ((name (file-name-nondirectory file)))
|
||
(if (string-match "\\.elc?$" name)
|
||
(substring name 0 (match-beginning 0))
|
||
name)))
|
||
(found nil)
|
||
(existing-buffer (get-file-buffer file)))
|
||
(save-excursion
|
||
;; We want to get a value for generated-autoload-file from
|
||
;; the local variables section if it's there.
|
||
(if existing-buffer
|
||
(set-buffer existing-buffer))
|
||
;; We must read/write the file without any code conversion.
|
||
(let ((coding-system-for-read 'no-conversion))
|
||
(set-buffer (find-file-noselect
|
||
(expand-file-name generated-autoload-file
|
||
(expand-file-name "lisp"
|
||
source-directory)))))
|
||
(or (> (buffer-size) 0)
|
||
(error "Autoloads file %s does not exist" buffer-file-name))
|
||
(or (file-writable-p buffer-file-name)
|
||
(error "Autoloads file %s is not writable" buffer-file-name))
|
||
(save-excursion
|
||
(save-restriction
|
||
(widen)
|
||
(goto-char (point-min))
|
||
;; Look for the section for LOAD-NAME.
|
||
(while (and (not found)
|
||
(search-forward generate-autoload-section-header nil t))
|
||
(let ((form (autoload-read-section-header)))
|
||
(cond ((string= (nth 2 form) load-name)
|
||
;; We found the section for this file.
|
||
;; Check if it is up to date.
|
||
(let ((begin (match-beginning 0))
|
||
(last-time (nth 4 form))
|
||
(file-time (nth 5 (file-attributes file))))
|
||
(if (and (or (null existing-buffer)
|
||
(not (buffer-modified-p existing-buffer)))
|
||
(listp last-time) (= (length last-time) 2)
|
||
(or (> (car last-time) (car file-time))
|
||
(and (= (car last-time) (car file-time))
|
||
(>= (nth 1 last-time)
|
||
(nth 1 file-time)))))
|
||
(progn
|
||
(if (interactive-p)
|
||
(message "\
|
||
Autoload section for %s is up to date."
|
||
file))
|
||
(setq found 'up-to-date))
|
||
(search-forward generate-autoload-section-trailer)
|
||
(delete-region begin (point))
|
||
(setq found t))))
|
||
((string< load-name (nth 2 form))
|
||
;; We've come to a section alphabetically later than
|
||
;; LOAD-NAME. We assume the file is in order and so
|
||
;; there must be no section for LOAD-NAME. We will
|
||
;; insert one before the section here.
|
||
(goto-char (match-beginning 0))
|
||
(setq found 'new)))))
|
||
(or found
|
||
(progn
|
||
(setq found 'new)
|
||
;; No later sections in the file. Put before the last page.
|
||
(goto-char (point-max))
|
||
(search-backward "\f" nil t)))
|
||
(or (eq found 'up-to-date)
|
||
(and (eq found 'new)
|
||
;; Check that FILE has any cookies before generating a
|
||
;; new section for it.
|
||
(save-excursion
|
||
(if existing-buffer
|
||
(set-buffer existing-buffer)
|
||
;; It is faster to avoid visiting the file.
|
||
(set-buffer (get-buffer-create " *autoload-file*"))
|
||
(kill-all-local-variables)
|
||
(erase-buffer)
|
||
(setq buffer-undo-list t
|
||
buffer-read-only nil)
|
||
(emacs-lisp-mode)
|
||
(insert-file-contents file nil))
|
||
(save-excursion
|
||
(save-restriction
|
||
(widen)
|
||
(goto-char (point-min))
|
||
(prog1
|
||
(if (re-search-forward
|
||
(concat "^" (regexp-quote
|
||
generate-autoload-cookie))
|
||
nil t)
|
||
nil
|
||
(if (interactive-p)
|
||
(message "%s has no autoloads" file))
|
||
t)
|
||
(or existing-buffer
|
||
(kill-buffer (current-buffer))))))))
|
||
(generate-file-autoloads file))))
|
||
(and (interactive-p)
|
||
(buffer-modified-p)
|
||
(save-buffer)))))
|
||
|
||
;;;###autoload
|
||
(defun update-autoloads-from-directories (&rest dirs)
|
||
"\
|
||
Update loaddefs.el with all the current autoloads from DIRS, and no old ones.
|
||
This uses `update-file-autoloads' (which see) do its work."
|
||
(interactive "DUpdate autoloads from directory: ")
|
||
(let ((files (apply 'nconc
|
||
(mapcar (function (lambda (dir)
|
||
(directory-files (expand-file-name dir)
|
||
t
|
||
"^[^=.].*\\.el$")))
|
||
dirs)))
|
||
autoloads-file
|
||
top-dir)
|
||
(setq autoloads-file
|
||
(expand-file-name generated-autoload-file
|
||
(expand-file-name "lisp"
|
||
source-directory)))
|
||
(setq top-dir (file-name-directory autoloads-file))
|
||
(save-excursion
|
||
(set-buffer (find-file-noselect autoloads-file))
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(while (search-forward generate-autoload-section-header nil t)
|
||
(let* ((form (autoload-read-section-header))
|
||
(file (nth 3 form)))
|
||
(cond ((not (stringp file)))
|
||
((not (file-exists-p (expand-file-name file top-dir)))
|
||
;; Remove the obsolete section.
|
||
(let ((begin (match-beginning 0)))
|
||
(search-forward generate-autoload-section-trailer)
|
||
(delete-region begin (point))))
|
||
(t
|
||
(update-file-autoloads file)))
|
||
(setq files (delete file files)))))
|
||
;; Elements remaining in FILES have no existing autoload sections.
|
||
(mapcar 'update-file-autoloads files)
|
||
(save-buffer))))
|
||
|
||
;;;###autoload
|
||
(defun batch-update-autoloads ()
|
||
"Update loaddefs.el autoloads in batch mode.
|
||
Calls `update-autoloads-from-directories' on the command line arguments."
|
||
(apply 'update-autoloads-from-directories command-line-args-left)
|
||
(setq command-line-args-left nil))
|
||
|
||
(provide 'autoload)
|
||
|
||
;;; autoload.el ends here
|