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- ;;; autoload.el --- maintain autoloads in loaddefs.el.
-
- ;; Copyright (C) 1991, 92, 93, 94, 95, 96 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:
-
- (defun make-autoload (form file)
- "Turn FORM, a defun or defmacro, into an autoload for source file FILE.
- Returns nil if FORM is not a defun, define-skeleton or defmacro."
- (let ((car (car-safe form)))
- (if (memq car '(defun define-skeleton defmacro))
- (let ((macrop (eq car 'defmacro))
- name doc)
- (setq form (cdr form)
- name (car form)
- ;; Ignore the arguments.
- form (cdr (if (eq car 'define-skeleton)
- form
- (cdr form)))
- doc (car form))
- (if (stringp doc)
- (setq form (cdr form))
- (setq doc nil))
- (list 'autoload (list 'quote name) file doc
- (or (eq car 'define-skeleton)
- (eq (car-safe (car form)) 'interactive))
- (if macrop (list 'quote 'macro) nil)))
- nil)))
-
- (put 'define-skeleton 'doc-string-elt 3)
-
- (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 inserted before the form identifying
- the section of autoloads for a file.")
-
- (defconst generate-autoload-section-trailer "\n;;;***\n"
- "String which indicates the end of the section of autoloads for a file.")
-
- ;;; 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 'defconst 'doc-string-elt 3)
- (put 'defmacro '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 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 (make-autoload form load-name))
- (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))
- (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 autoload outbuf))))
- ;; 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 generate-autoload-section-header)
- (prin1 (list 'autoloads autoloads-done load-name
- (autoload-trim-file-name file)
- (nth 5 (file-attributes file)))
- outbuf)
- (terpri outbuf)
- (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)))
-
- (defconst 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.")
-
- ;;;###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))
- (set-buffer (find-file-noselect generated-autoload-file))
- (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 (condition-case ()
- (read (current-buffer))
- (end-of-file nil))))
- (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")))
- (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 (search-forward
- (concat "\n" 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))))
- (if (interactive-p) (save-buffer)))))
-
- ;;;###autoload
- (defun update-autoloads-from-directory (dir)
- "\
- Update loaddefs.el with all the current autoloads from DIR, and no old ones.
- This uses `update-file-autoloads' (which see) do its work."
- (interactive "DUpdate autoloads from directory: ")
- (setq dir (expand-file-name dir))
- (let ((files (directory-files dir nil "^[^=].*\\.el$")))
- (save-excursion
- (set-buffer (find-file-noselect
- (if (file-exists-p generated-autoload-file)
- generated-autoload-file
- (expand-file-name generated-autoload-file
- dir))))
- (save-excursion
- (goto-char (point-min))
- (while (search-forward generate-autoload-section-header nil t)
- (let* ((form (condition-case ()
- (read (current-buffer))
- (end-of-file nil)))
- (file (nth 3 form)))
- (cond ((not (stringp file)))
- ((not (file-exists-p (expand-file-name file 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-directory' on each command line argument."
- (mapcar 'update-autoloads-from-directory command-line-args-left)
- (setq command-line-args-left nil))
-
- (provide 'autoload)
-
- ;;; autoload.el ends here
-