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[chise/xemacs-chise.git] / lisp / autoload.el
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+;;; autoload.el --- maintain autoloads in loaddefs.el.
+
+;; Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
+;; Copyright (C) 1995 Tinker Systems and INS Engineering Corp.
+;; Copyright (C) 1996, 2000 Ben Wing.
+
+;; Author: Roland McGrath <roland@gnu.ai.mit.edu>
+;; Keywords: maint
+
+;; This file is part of XEmacs.
+
+;; XEmacs 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.
+
+;; XEmacs 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 XEmacs; see the file COPYING.  If not, write to the Free
+;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+;; 02111-1307, USA.
+
+;;; Synched up with: Not synched with FSF.
+
+;;; 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.
+
+;; ChangeLog:
+
+;; Sep-26-1997:  slb removed code dealing with customization.
+
+;;; Code:
+
+(defun make-autoload (form file)
+  "Turn a definition generator FORM into an autoload for source file FILE.
+Returns nil if FORM is not a defun, define-skeleton, define-derived-mode,
+or defmacro."
+  (let ((car (car-safe form)))
+    (if (memq car '(defun define-skeleton defmacro define-derived-mode))
+       (let ((macrop (eq car 'defmacro))
+             name doc)
+         (setq form (cdr form)
+               name (car form)
+               ;; Ignore the arguments.
+               form (cdr (cond ((eq car 'define-skeleton)
+                                form)
+                               ((eq car 'define-derived-mode)
+                                (cddr form))
+                               (t
+                                (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 'define-derived-mode)
+                   (eq (car-safe (car form)) 'interactive))
+               (if macrop (list 'quote 'macro) nil)))
+      nil)))
+
+(defvar 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 it is followed by the string
+\"immediate\", then the form on the following line will be copied
+verbatim.  If there is further text on the line, that text will be
+copied verbatim to `generated-autoload-file'.")
+
+(defvar generate-autoload-section-header "\f\n;;;### "
+  "String inserted before the form identifying
+the section of autoloads for a file.")
+
+(defvar generate-autoload-section-trailer "\n;;;***\n"
+  "String which indicates the end of the section of autoloads for a file.")
+
+(defvar autoload-package-name 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 '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 4)
+
+(defun autoload-trim-file-name (file)
+  "Returns a relative pathname of FILE including the last directory."
+  (setq file (expand-file-name file))
+  (replace-in-string
+   (file-relative-name file (file-name-directory
+                            (directory-file-name
+                             (file-name-directory file))))
+   "\\\\" "/"))
+
+;;;###autoload
+(defun generate-file-autoloads (file &optional funlist)
+  "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: ")
+  (generate-file-autoloads-1 file funlist))
+
+(defun* generate-file-autoloads-1 (file funlist)
+  "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."
+  (let ((outbuf (current-buffer))
+       (autoloads-done '())
+       (load-name (replace-in-string (file-name-nondirectory file)
+                                     "\\.elc?$"
+                                     ""))
+       (trim-name (autoload-trim-file-name file))
+       (dofiles (not (null funlist)))
+       (print-length nil)
+       (print-readably t) ; XEmacs
+       (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))
+
+    (save-excursion
+      (unwind-protect
+         (progn
+           (let ((find-file-hooks nil)
+                 (enable-local-variables nil))
+             (set-buffer (or visited (find-file-noselect file)))
+             (set-syntax-table emacs-lisp-mode-syntax-table))
+           (save-excursion
+             (save-restriction
+               (widen)
+               (goto-char (point-min))
+               (unless (search-forward generate-autoload-cookie nil t)
+                 (message "No autoloads found in %s" trim-name)
+                 (return-from generate-file-autoloads-1))
+
+               (message "Generating autoloads for %s..." trim-name)
+               (goto-char (point-min))
+               (while (if dofiles funlist (not (eobp)))
+                 (if (not dofiles)
+                     (skip-chars-forward " \t\n\f")
+                   (goto-char (point-min))
+                   (re-search-forward
+                    (concat "(def\\(un\\|var\\|const\\|macro\\) "
+                            (regexp-quote (symbol-name (car funlist)))
+                            "\\s "))
+                   (goto-char (match-beginning 0)))
+                 (cond
+                  ((or dofiles
+                       (looking-at (regexp-quote generate-autoload-cookie)))
+                   (if dofiles
+                       nil
+                     (search-forward generate-autoload-cookie)
+                     (skip-chars-forward " \t"))
+                   ;; (setq done-any t)
+                   (if (or dofiles (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)
+                               ;; XEmacs change: don't let ^^L's get into
+                               ;; the file or sorting is hard.
+                               (let ((print-escape-newlines t)
+                                     (p (save-excursion
+                                          (set-buffer outbuf)
+                                          (point)))
+                                     p2)
+                                 (mapcar (function (lambda (elt)
+                                                     (prin1 elt outbuf)
+                                                     (princ " " outbuf)))
+                                         autoload)
+                                 (save-excursion
+                                   (set-buffer outbuf)
+                                   (setq p2 (point-marker))
+                                   (goto-char p)
+                                   (save-match-data
+                                     (while (search-forward "\^L" p2 t)
+                                       (delete-char -1)
+                                       (insert "\\^L")))
+                                   (goto-char p2)
+                                   ))
+                               (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)))
+                           ;; XEmacs change: another fucking ^L hack
+                           (let ((p (save-excursion
+                                      (set-buffer outbuf)
+                                      (point)))
+                                 (print-escape-newlines t)
+                                 p2)
+                             (print autoload outbuf)
+                             (save-excursion
+                               (set-buffer outbuf)
+                               (setq p2 (point-marker))
+                               (goto-char p)
+                               (save-match-data
+                                 (while (search-forward "\^L" p2 t)
+                                   (delete-char -1)
+                                   (insert "\\^L")))
+                               (goto-char p2)
+                               ))
+                           ))
+                     ;; Copy the rest of the line to the output.
+                     (let ((begin (point)))
+                       ;; (terpri outbuf)
+                       (cond ((looking-at "immediate\\s *$") ; XEmacs
+                              ;; This is here so that you can automatically
+                              ;; have small hook functions copied to
+                              ;; loaddefs.el so that it's not necessary to
+                              ;; load a whole file just to get a two-line
+                              ;; do-nothing find-file-hook... --Stig
+                              (forward-line 1)
+                              (setq begin (point))
+                              (forward-sexp)
+                              (forward-line 1))
+                             (t
+                              (forward-line 1)))
+                       (princ (buffer-substring begin (point)) outbuf))))
+                  ((looking-at ";")
+                   ;; Don't read the comment.
+                   (forward-line 1))
+                  (t
+                   (forward-sexp 1)
+                   (forward-line 1)))
+                 (if dofiles
+                     (setq funlist (cdr funlist)))))))
+       (unless visited
+           ;; We created this buffer, so we should kill it.
+           (kill-buffer (current-buffer)))
+       (set-buffer outbuf)
+       (setq output-end (point-marker))))
+    (if t ;; done-any
+       ;; XEmacs -- always do this so that we cache the information
+       ;; that we've processed the file already.
+       (progn
+         (insert generate-autoload-section-header)
+         (prin1 (list 'autoloads autoloads-done load-name trim-name)
+                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.
+         (when (< output-end (point))
+           (setq output-end (point-marker)))
+         (while (< (point) output-end)
+           ;; (let ((beg (point)))
+             (end-of-line)
+             ;; Emacs -- I still haven't figured this one out.
+             ;; (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)))
+    (or noninteractive ; XEmacs: only need one line in -batch mode.
+       (message "Generating autoloads for %s...done" file))))
+
+\f
+(defconst autoload-file-name "auto-autoloads.el"
+  "Generic filename to put autoloads into.
+Unless you are an XEmacs maintainer, it is probably unwise to change this.")
+
+(defvar autoload-target-directory "../lisp/"
+  "Directory to put autoload declaration file into.
+Unless you know what you're doing, don't mess with this.")
+
+(defvar generated-autoload-file
+  (expand-file-name (concat autoload-target-directory
+                           autoload-file-name)
+                   data-directory)
+  "*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.
+
+Note that `batch-update-directory' binds this variable to its own value,
+generally the file named `autoload-file-name' in the directory being
+updated.")
+
+(defconst cusload-file-name "custom-load.el"
+  "Generic filename to put custom loads into.
+Unless you are an XEmacs maintainer, it is probably unwise to change this.")
+
+;;;###autoload
+(defun update-file-autoloads (file)
+  "Update the autoloads for FILE in `generated-autoload-file'
+\(which FILE might bind in its local variables).
+This function refuses to update autoloads files."
+  (interactive "fUpdate autoloads for file: ")
+  (setq file (expand-file-name file))
+  (when (and (file-newer-than-file-p file generated-autoload-file)
+            (not (member (file-name-nondirectory file)
+                         (list autoload-file-name))))
+
+    (let ((load-name (replace-in-string (file-name-nondirectory file)
+                                       "\\.elc?$"
+                                       ""))
+         (trim-name (autoload-trim-file-name file))
+         section-begin form)
+      (save-excursion
+       (let ((find-file-hooks nil))
+         (set-buffer (or (get-file-buffer generated-autoload-file)
+                         (find-file-noselect generated-autoload-file))))
+       ;; Make sure we can scribble in it.
+       (setq buffer-read-only nil)
+       ;; First delete all sections for this file.
+       (goto-char (point-min))
+       (while (search-forward generate-autoload-section-header nil t)
+         (setq section-begin (match-beginning 0))
+         (setq form (read (current-buffer)))
+         (when (string= (nth 2 form) load-name)
+           (search-forward generate-autoload-section-trailer)
+           (delete-region section-begin (point))))
+
+       ;; Now find insertion point for new section
+       (block find-insertion-point
+         (goto-char (point-min))
+         (while (search-forward generate-autoload-section-header nil t)
+           (setq form (read (current-buffer)))
+           (when (string< trim-name (nth 3 form))
+             ;; Found alphabetically correct insertion point
+             (goto-char (match-beginning 0))
+             (return-from find-insertion-point))
+           (search-forward generate-autoload-section-trailer))
+         (when (eq (point) (point-min))        ; No existing entries?
+           (goto-char (point-max))))   ; Append.
+
+       ;; Add in new sections for file
+       (generate-file-autoloads file))
+
+      (when (interactive-p) (save-buffer)))))
+
+;;;###autoload
+(defun update-autoloads-here ()
+  "Update sections of the current buffer generated by `update-file-autoloads'."
+  (interactive)
+  (let ((generated-autoload-file (buffer-file-name)))
+    (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)))
+         ;; XEmacs change: if we can't find the file as specified, look
+         ;; around a bit more.
+         (cond ((and (stringp file)
+                     (or (get-file-buffer file)
+                         (file-exists-p file))))
+               ((and (stringp file)
+                     (save-match-data
+                       (let ((loc (locate-file (file-name-nondirectory file)
+                                               load-path)))
+                         (if (null loc)
+                             nil
+                           (setq loc (expand-file-name
+                                      (autoload-trim-file-name loc)
+                                      ".."))
+                           (if (or (get-file-buffer loc)
+                                   (file-exists-p loc))
+                               (setq file loc)
+                             nil))))))
+               (t
+                (setq file
+                      (if (y-or-n-p
+                           (format
+                            "Can't find library `%s'; remove its autoloads? "
+                            (nth 2 form) file))
+                          t
+                        (condition-case ()
+                            (read-file-name
+                             (format "Find `%s' load file: "
+                                     (nth 2 form))
+                             nil nil t)
+                          (quit nil))))))
+         (if file
+             (let ((begin (match-beginning 0)))
+               (search-forward generate-autoload-section-trailer)
+               (delete-region begin (point))))
+         (if (stringp file)
+             (generate-file-autoloads file)))))))
+
+;;;###autoload
+(defun update-autoloads-from-directory (dir)
+  "Update `generated-autoload-file' with all the current autoloads from DIR.
+This runs `update-file-autoloads' on each .el file in DIR.
+Obsolete autoload entries for files that no longer exist are deleted.
+Note that, if this function is called from `batch-update-directory',
+`generated-autoload-file' was rebound in that function."
+  (interactive "DUpdate autoloads for directory: ")
+  (setq dir (expand-file-name dir))
+  (let ((simple-dir (file-name-as-directory
+                    (file-name-nondirectory
+                    (directory-file-name dir))))
+       (enable-local-eval nil))
+    (save-excursion
+      (let ((find-file-hooks nil))
+       (set-buffer (find-file-noselect generated-autoload-file)))
+      (goto-char (point-min))
+      (while (search-forward generate-autoload-section-header nil t)
+       (let* ((begin (match-beginning 0))
+              (form (condition-case ()
+                        (read (current-buffer))
+                      (end-of-file nil)))
+              (file (nth 3 form)))
+         (when (and (stringp file)
+                    (string= (file-name-directory file) simple-dir)
+                    (not (file-exists-p
+                          (expand-file-name
+                           (file-name-nondirectory file) dir))))
+           ;; Remove the obsolete section.
+           (search-forward generate-autoload-section-trailer)
+           (delete-region begin (point)))))
+      ;; Update or create autoload sections for existing files.
+      (mapcar 'update-file-autoloads (directory-files dir t "^[^=].*\\.el$"))
+      (unless noninteractive
+       (save-buffer)))))
+
+;;;###autoload
+(defun batch-update-autoloads ()
+  "Update the autoloads for the files or directories on the command line.
+Runs `update-file-autoloads' on files and `update-directory-autoloads'
+on directories.  Must be used only with -batch, and kills Emacs on completion.
+Each file will be processed even if an error occurred previously.
+For example, invoke `xemacs -batch -f batch-update-autoloads *.el'.
+The directory to which the auto-autoloads.el file must be the first parameter
+on the command line."
+  (unless noninteractive
+    (error "batch-update-autoloads is to be used only with -batch"))
+  (let ((defdir (directory-file-name default-directory))
+       (enable-local-eval nil))        ; Don't query in batch mode.
+    ;; (message "Updating autoloads in %s..." generated-autoload-file)
+    (dolist (arg command-line-args-left)
+      (setq arg (expand-file-name arg defdir))
+      (cond
+       ((file-directory-p arg)
+       (message "Updating autoloads for directory %s..." arg)
+       (update-autoloads-from-directory arg))
+       ((file-exists-p arg)
+       (update-file-autoloads arg))
+       (t (error "No such file or directory: %s" arg))))
+    (fixup-autoload-buffer (concat (if autoload-package-name
+                                      autoload-package-name
+                                    (file-name-nondirectory defdir))
+                                  "-autoloads"))
+    (save-some-buffers t)
+    ;; (message "Done")
+    (kill-emacs 0)))
+
+(defun fixup-autoload-buffer (sym)
+  (save-excursion
+    (set-buffer (find-file-noselect generated-autoload-file))
+    (goto-char (point-min))
+    (if (and (not (= (point-min) (point-max)))
+            (not (looking-at ";;; DO NOT MODIFY THIS FILE")))
+       (progn
+         (insert ";;; DO NOT MODIFY THIS FILE\n")
+         (insert "(if (featurep '" sym ")")
+         (insert " (error \"Already loaded\"))\n")
+         (goto-char (point-max))
+         (insert "\n(provide '" sym ")\n")))))
+
+(defvar autoload-package-name nil)
+
+;; #### this function is almost identical to, but subtly different from,
+;; batch-update-autoloads.  Both of these functions, unfortunately, are
+;; used in various build scripts in xemacs-packages.  They should be
+;; merged. (However, it looks like no scripts pass more than one arg,
+;; making merging easy.) --ben
+
+;;;###autoload
+(defun batch-update-directory ()
+  "Update the autoloads for the directories on the command line.
+Runs `update-file-autoloads' on each file in the given directory, and must
+be used only with -batch."
+  (unless noninteractive
+    (error "batch-update-directory is to be used only with -batch"))
+  (let ((defdir default-directory)
+       (enable-local-eval nil))        ; Don't query in batch mode.
+    (dolist (arg command-line-args-left)
+      (setq arg (expand-file-name arg defdir))
+      (let ((generated-autoload-file (expand-file-name autoload-file-name
+                                                       arg)))
+       (cond
+        ((file-directory-p arg)
+         (message "Updating autoloads in directory %s..." arg)
+         (update-autoloads-from-directory arg))
+        (t (error "No such file or directory: %s" arg)))
+       (fixup-autoload-buffer (concat (if autoload-package-name
+                                          autoload-package-name
+                                        (file-name-nondirectory arg))
+                               "-autoloads"))
+       (save-some-buffers t))
+      ;; (message "Done")
+      ;; (kill-emacs 0)
+      )
+    (setq command-line-args-left nil)))
+
+;; #### i created the following.  this one and the last should be merged into
+;; batch-update-autoloads and batch-update-one-directory. --ben
+
+;;;###autoload
+(defun batch-update-one-directory ()
+  "Update the autoloads for a single directory on the command line.
+Runs `update-file-autoloads' on each file in the given directory, and must
+be used only with -batch."
+  (unless noninteractive
+    (error "batch-update-directory is to be used only with -batch"))
+  (let ((defdir default-directory)
+       (enable-local-eval nil))        ; Don't query in batch mode.
+    (let ((arg (car command-line-args-left)))
+      (setq command-line-args-left (cdr command-line-args-left))
+      (setq arg (expand-file-name arg defdir))
+      (let ((generated-autoload-file (expand-file-name autoload-file-name
+                                                       arg)))
+       (cond
+        ((file-directory-p arg)
+         (message "Updating autoloads in directory %s..." arg)
+         (update-autoloads-from-directory arg))
+        (t (error "No such file or directory: %s" arg)))
+       (fixup-autoload-buffer (concat (if autoload-package-name
+                                          autoload-package-name
+                                        (file-name-nondirectory arg))
+                               "-autoloads"))
+       (save-some-buffers t))
+      ;; (message "Done")
+      )))
+
+(provide 'autoload)
+
+;;; autoload.el ends here