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diff --git a/gnu/usr.bin/texinfo/emacs/texnfo-upd.el b/gnu/usr.bin/texinfo/emacs/texnfo-upd.el new file mode 100644 index 00000000000..f84cdd51496 --- /dev/null +++ b/gnu/usr.bin/texinfo/emacs/texnfo-upd.el @@ -0,0 +1,2046 @@ +;;; Texinfo mode utilities for updating nodes and menus in Texinfo files. +;;; Copyright 1989, 1990, 1991, 1992 Free Software Foundation + +;; Author: Robert J. Chassell +;; Maintainer: bug-texinfo@prep.ai.mit.edu +;; Keywords: maint, tex, docs + +;; 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, 675 Mass Ave, Cambridge, MA 02139, USA. + +;;; Commentary: + +;;; Known bug: update commands fail to ignore @ignore. + +;;; Summary: how to use the updating commands + +; The node and menu updating functions automatically + +; * insert missing `@node' lines, +; * insert the `Next', `Previous' and `Up' pointers of a node, +; * insert or update the menu for a section, +; * create a master menu for a Texinfo source file. +; +; Passed an argument, the `texinfo-update-node' and +; `texinfo-make-menu' functions do their jobs in the region. +; +; In brief, the functions for creating or updating nodes and menus, are: +; +; texinfo-update-node (&optional region-p) +; texinfo-every-node-update () +; texinfo-sequential-node-update (&optional region-p) +; +; texinfo-make-menu (&optional region-p) +; texinfo-all-menus-update () +; texinfo-master-menu () +; +; texinfo-insert-node-lines (&optional title-p) +; +; texinfo-indent-menu-description (column &optional region-p) + +; The `texinfo-column-for-description' variable specifies the column to +; which menu descriptions are indented. + +; Texinfo file structure +; ---------------------- + +; To use the updating commands, you must structure your Texinfo file +; hierarchically. Each `@node' line, with the exception of the top +; node, must be accompanied by some kind of section line, such as an +; `@chapter' or `@section' line. Each node-line/section-line +; combination must look like this: + +; @node Lists and Tables, Cross References, Structuring, Top +; @comment node-name, next, previous, up +; @chapter Making Lists and Tables + +; or like this (without the `@comment' line): + +; @node Lists and Tables, Cross References, Structuring, Top +; @chapter Making Lists and Tables + +; If the file has a `top' node, it must be called `top' or `Top' and +; be the first node in the file. + + +;;; The update node functions described in detail + +; The `texinfo-update-node' function without an argument inserts +; the correct next, previous and up pointers for the node in which +; point is located (i.e., for the node preceding point). + +; With an argument, the `texinfo-update-node' function inserts the +; correct next, previous and up pointers for the nodes inside the +; region. + +; It does not matter whether the `@node' line has pre-existing +; `Next', `Previous', or `Up' pointers in it. They are removed. + +; The `texinfo-every-node-update' function runs `texinfo-update-node' +; on the whole buffer. + +; The `texinfo-sequential-node-update' function inserts the +; immediately following and preceding node into the `Next' or +; `Previous' pointers regardless of their hierarchical level. This is +; only useful for certain kinds of text, like a novel, which you go +; through sequentially. + + +;;; The menu making functions described in detail + +; The `texinfo-make-menu' function without an argument creates or +; updates a menu for the section encompassing the node that follows +; point. With an argument, it makes or updates menus for the nodes +; within or part of the marked region. + +; Whenever an existing menu is updated, the descriptions from +; that menu are incorporated into the new menu. This is done by copying +; descriptions from the existing menu to the entries in the new menu +; that have the same node names. If the node names are different, the +; descriptions are not copied to the new menu. + +; Menu entries that refer to other Info files are removed since they +; are not a node within current buffer. This is a deficiency. + +; The `texinfo-all-menus-update' function runs `texinfo-make-menu' +; on the whole buffer. + +; The `texinfo-master-menu' function creates an extended menu located +; after the top node. (The file must have a top node.) The function +; first updates all the regular menus in the buffer (incorporating the +; descriptions from pre-existing menus), and then constructs a master +; menu that includes every entry from every other menu. (However, the +; function cannot update an already existing master menu; if one +; exists, it must be removed before calling the function.) + +; The `texinfo-indent-menu-description' function indents every +; description in the menu following point, to the specified column. +; Non-nil argument (prefix, if interactive) means indent every +; description in every menu in the region. This function does not +; indent second and subsequent lines of a multi-line description. + +; The `texinfo-insert-node-lines' function inserts `@node' before the +; `@chapter', `@section', and such like lines of a region in a Texinfo +; file where the `@node' lines are missing. +; +; With a non-nil argument (prefix, if interactive), the function not +; only inserts `@node' lines but also inserts the chapter or section +; titles as the names of the corresponding nodes; and inserts titles +; as node names in pre-existing `@node' lines that lack names. +; +; Since node names should be more concise than section or chapter +; titles, node names so inserted will need to be edited manually. + + +;;; Code: + +;;; The menu making functions + +(defun texinfo-make-menu (&optional region-p) + "Without any prefix argument, make or update a menu. +Make the menu for the section enclosing the node found following point. + +Non-nil argument (prefix, if interactive) means make or update menus +for nodes within or part of the marked region. + +Whenever a menu exists, and is being updated, the descriptions that +are associated with node names in the pre-existing menu are +incorporated into the new menu. Otherwise, the nodes' section titles +are inserted as descriptions." + + (interactive "P") + (if (not region-p) + (let ((level (texinfo-hierarchic-level))) + (texinfo-make-one-menu level) + (message "Done...updated the menu. You may save the buffer.")) + ;; else + (message "Making or updating menus in %s... " (buffer-name)) + (let ((beginning (region-beginning)) + (region-end (region-end)) + (level (progn ; find section type following point + (goto-char (region-beginning)) + (texinfo-hierarchic-level)))) + (if (= region-end beginning) + (error "Please mark a region!")) + (save-excursion + (save-restriction + (widen) + + (while (texinfo-find-lower-level-node level region-end) + (setq level (texinfo-hierarchic-level)) ; new, lower level + (texinfo-make-one-menu level)) + + (while (and (< (point) region-end) + (texinfo-find-higher-level-node level region-end)) + (setq level (texinfo-hierarchic-level)) + (while (texinfo-find-lower-level-node level region-end) + (setq level (texinfo-hierarchic-level)) ; new, lower level + (texinfo-make-one-menu level)))))) + (message "Done...updated menus. You may save the buffer."))) + +(defun texinfo-make-one-menu (level) + "Make a menu of all the appropriate nodes in this section. +`Appropriate nodes' are those associated with sections that are +at the level specified by LEVEL. Point is left at the end of menu." + (let* + ((case-fold-search t) + (beginning + (save-excursion + (goto-char (texinfo-update-menu-region-beginning level)) + (end-of-line) + (point))) + (end (texinfo-update-menu-region-end level)) + (first (texinfo-menu-first-node beginning end)) + (node-name (progn + (goto-char beginning) + (beginning-of-line) + (texinfo-copy-node-name))) + (new-menu-list (texinfo-make-menu-list beginning end level))) + (if (texinfo-old-menu-p beginning first) + (progn + (texinfo-incorporate-descriptions new-menu-list) + (texinfo-incorporate-menu-entry-names new-menu-list) + (texinfo-delete-old-menu beginning first))) + (texinfo-insert-menu new-menu-list node-name))) + +(defun texinfo-all-menus-update (&optional update-all-nodes-p) + "Update every regular menu in a Texinfo file. +Update pre-existing master menu, if there is one. + +If called with a non-nil argument, this function first updates all the +nodes in the buffer before updating the menus." + (interactive "P") + (let ((case-fold-search t) + master-menu-p) + (save-excursion + (push-mark (point-max) t) + (goto-char (point-min)) + (message "Checking for a master menu in %s ... "(buffer-name)) + (save-excursion + (if (re-search-forward texinfo-master-menu-header nil t) + ;; Remove detailed master menu listing + (progn + (setq master-menu-p t) + (goto-char (match-beginning 0)) + (let ((end-of-detailed-menu-descriptions + (save-excursion ; beginning of end menu line + (goto-char (texinfo-menu-end)) + (beginning-of-line) (forward-char -1) + (point)))) + (delete-region (point) end-of-detailed-menu-descriptions))))) + + (if update-all-nodes-p + (progn + (message "Updating all nodes in %s ... " (buffer-name)) + (sleep-for 2) + (push-mark (point-max) t) + (goto-char (point-min)) + ;; Using the mark to pass bounds this way + ;; is kludgy, but it's not worth fixing. -- rms. + (let ((mark-active t)) + (texinfo-update-node t)))) + + (message "Updating all menus in %s ... " (buffer-name)) + (sleep-for 2) + (push-mark (point-max) t) + (goto-char (point-min)) + ;; Using the mark to pass bounds this way + ;; is kludgy, but it's not worth fixing. -- rms. + (let ((mark-active t)) + (texinfo-make-menu t)) + + (if master-menu-p + (progn + (message "Updating the master menu in %s... " (buffer-name)) + (sleep-for 2) + (texinfo-master-menu nil)))) + + (message "Done...updated all the menus. You may save the buffer."))) + +(defun texinfo-find-lower-level-node (level region-end) + "Search forward from point for node at any level lower than LEVEL. +Search is limited to the end of the marked region, REGION-END, +and to the end of the menu region for the level. + +Return t if the node is found, else nil. Leave point at the beginning +of the node if one is found; else do not move point." + (let ((case-fold-search t)) + (if (and (< (point) region-end) + (re-search-forward + (concat + "\\(^@node\\).*\n" ; match node line + "\\(\\(\\(^@c\\).*\n\\)" ; match comment line, if any + "\\|" ; or + "\\(^@ifinfo[ ]*\n\\)\\)?" ; ifinfo line, if any + (eval (cdr (assoc level texinfo-update-menu-lower-regexps)))) + ;; the next higher level node marks the end of this + ;; section, and no lower level node will be found beyond + ;; this position even if region-end is farther off + (texinfo-update-menu-region-end level) + t)) + (goto-char (match-beginning 1))))) + +(defun texinfo-find-higher-level-node (level region-end) + "Search forward from point for node at any higher level than argument LEVEL. +Search is limited to the end of the marked region, REGION-END. + +Return t if the node is found, else nil. Leave point at the beginning +of the node if one is found; else do not move point." + (let ((case-fold-search t)) + (cond + ((or (string-equal "top" level) (string-equal "chapter" level)) + (if (re-search-forward "^@node [ \t]*top[ \t]*\\(,\\|$\\)" region-end t) + (progn (beginning-of-line) t))) + (t + (if (re-search-forward + (concat + "\\(^@node\\).*\n" ; match node line + "\\(\\(\\(^@c\\).*\n\\)" ; match comment line, if any + "\\|" ; or + "\\(^@ifinfo[ ]*\n\\)\\)?" ; ifinfo line, if any + (eval (cdr (assoc level texinfo-update-menu-higher-regexps)))) + region-end t) + (progn (beginning-of-line) t)))))) + + +;;; Making the list of new menu entries + +(defun texinfo-make-menu-list (beginning end level) + "Make a list of node names and their descriptions. +Point is left at the end of the menu region, but the menu is not inserted. + +First argument is position from which to start making menu list; +second argument is end of region in which to try to locate entries; +third argument is the level of the nodes that are the entries. + +Node names and descriptions are dotted pairs of strings. Each pair is +an element of the list. If the description does not exist, the +element consists only of the node name." + (goto-char beginning) + (let (new-menu-list) + (while (texinfo-menu-locate-entry-p level end) + (setq new-menu-list + (cons (cons + (texinfo-copy-node-name) + (prog1 "" (forward-line 1))) + ;; Use following to insert section titles automatically. + ;; (texinfo-copy-section-title)) + new-menu-list))) + (reverse new-menu-list))) + +(defun texinfo-menu-locate-entry-p (level search-end) + "Find a node that will be part of menu for this section. +First argument is a string such as \"section\" specifying the general +hierarchical level of the menu; second argument is a position +specifying the end of the search. + +The function returns t if the node is found, else nil. It searches +forward from point, and leaves point at the beginning of the node. + +The function finds entries of the same type. Thus `subsections' and +`unnumberedsubsecs' will appear in the same menu." + (let ((case-fold-search t)) + (if (re-search-forward + (concat + "\\(^@node\\).*\n" ; match node line + "\\(\\(\\(^@c\\).*\n\\)" ; match comment line, if any + "\\|" ; or + "\\(^@ifinfo[ ]*\n\\)\\)?" ; ifinfo line, if any + (eval + (cdr (assoc level texinfo-update-menu-same-level-regexps)))) + search-end + t) + (goto-char (match-beginning 1))))) + +(defun texinfo-copy-node-name () + "Return the node name as a string. + +Start with point at the beginning of the node line; copy the text +after the node command up to the first comma on the line, if any, and +return the text as a string. Leaves point at the beginning of the +line. If there is no node name, returns an empty string." + + (save-excursion + (buffer-substring + (progn (forward-word 1) ; skip over node command + (skip-chars-forward " \t") ; and over spaces + (point)) + (if (search-forward + "," + (save-excursion (end-of-line) (point)) t) ; bound search + (1- (point)) + (end-of-line) (point))))) + +(defun texinfo-copy-section-title () + "Return the title of the section as a string. +The title is used as a description line in the menu when one does not +already exist. + +Move point to the beginning of the appropriate section line by going +to the start of the text matched by last regexp searched for, which +must have been done by `texinfo-menu-locate-entry-p'." + + ;; could use the same re-search as in `texinfo-menu-locate-entry-p' + ;; instead of using `match-beginning'; such a variation would be + ;; more general, but would waste information already collected + + (goto-char (match-beginning 7)) ; match section name + + (buffer-substring + (progn (forward-word 1) ; skip over section type + (skip-chars-forward " \t") ; and over spaces + (point)) + (progn (end-of-line) (point)))) + + +;;; Handling the old menu + +(defun texinfo-old-menu-p (beginning first) + "Move point to the beginning of the menu for this section, if any. +Otherwise move point to the end of the first node of this section. +Return t if a menu is found, nil otherwise. + +First argument is the position of the beginning of the section in which +the menu will be located; second argument is the position of the first +node within the section. + +If no menu is found, the function inserts two newlines just before the +end of the section, and leaves point there where a menu ought to be." + (goto-char beginning) + (if (not (re-search-forward "^@menu" first 'goto-end)) + (progn (insert "\n\n") (forward-line -2) nil) + t)) + +(defun texinfo-incorporate-descriptions (new-menu-list) + "Copy the old menu line descriptions that exist to the new menu. + +Point must be at beginning of old menu. + +If the node-name of the new menu is found in the old menu, insert the +old description into the new entry. + +For this function, the new menu is a list made up of lists of dotted +pairs in which the first element of the pair is the node name and the +second element the description. The new menu is changed destructively. +The old menu is the menu as it appears in the texinfo file." + + (let ((new-menu-list-pointer new-menu-list) + (end-of-menu (texinfo-menu-end))) + (while new-menu-list + (save-excursion ; keep point at beginning of menu + (if (re-search-forward + ;; Existing nodes can have the form + ;; * NODE NAME:: DESCRIPTION + ;; or + ;; * MENU ITEM: NODE NAME. DESCRIPTION. + ;; + ;; Recognize both when looking for the description. + (concat "\\* \\(" ; so only menu entries are found + (car (car new-menu-list)) "::" + "\\|" + ".*: " (car (car new-menu-list)) "[.,\t\n]" + "\\)" + ) ; so only complete entries are found + end-of-menu + t) + (setcdr (car new-menu-list) + (texinfo-menu-copy-old-description end-of-menu)))) + (setq new-menu-list (cdr new-menu-list))) + (setq new-menu-list new-menu-list-pointer))) + +(defun texinfo-incorporate-menu-entry-names (new-menu-list) + "Copy any old menu entry names to the new menu. + +Point must be at beginning of old menu. + +If the node-name of the new menu entry cannot be found in the old +menu, do nothing. + +For this function, the new menu is a list made up of lists of dotted +pairs in which the first element of the pair is the node name and the +second element is the description (or nil). + +If we find an existing menu entry name, we change the first element of +the pair to be another dotted pair in which the car is the menu entry +name and the cdr is the node name. + +NEW-MENU-LIST is changed destructively. The old menu is the menu as it +appears in the texinfo file." + + (let ((new-menu-list-pointer new-menu-list) + (end-of-menu (texinfo-menu-end))) + (while new-menu-list + (save-excursion ; keep point at beginning of menu + (if (re-search-forward + ;; Existing nodes can have the form + ;; * NODE NAME:: DESCRIPTION + ;; or + ;; * MENU ITEM: NODE NAME. DESCRIPTION. + ;; + ;; We're interested in the second case. + (concat "\\* " ; so only menu entries are found + "\\(.*\\): " (car (car new-menu-list)) "[.,\t\n]") + end-of-menu + t) + (setcar + (car new-menu-list) ; replace the node name + (cons (buffer-substring (match-beginning 1) (match-end 1)) + (car (car new-menu-list))))) + (setq new-menu-list (cdr new-menu-list)))) + (setq new-menu-list new-menu-list-pointer))) + +(defun texinfo-menu-copy-old-description (end-of-menu) + "Return description field of old menu line as string. +Point must be located just after the node name. Point left before description. +Single argument, END-OF-MENU, is position limiting search." + (skip-chars-forward "[:.,\t\n ]+") + ;; don't copy a carriage return at line beginning with asterisk! + ;; do copy a description that begins with an `@'! + ;; !! Known bug: does not copy descriptions starting with ^|\{?* etc. + (if (and (looking-at "\\(\\w+\\|@\\)") + (not (looking-at "\\(^\\* \\|^@end menu\\)"))) + (buffer-substring + (point) + (save-excursion + (re-search-forward "\\(^\\* \\|^@end menu\\)" end-of-menu t) + (forward-line -1) + (end-of-line) ; go to end of last description line + (point))) + "")) + +(defun texinfo-menu-end () + "Return position of end of menu. Does not change location of point. +Signal an error if not end of menu." + (save-excursion + (if (re-search-forward "^@end menu" nil t) + (point) + (error "Menu does not have an end.")))) + +(defun texinfo-delete-old-menu (beginning first) + "Delete the old menu. Point must be in or after menu. +First argument is position of the beginning of the section in which +the menu will be located; second argument is the position of the first +node within the section." + ;; No third arg to search, so error if search fails. + (re-search-backward "^@menu" beginning) + (delete-region (point) + (save-excursion + (re-search-forward "^@end menu" first) + (point)))) + + +;;; Inserting new menu + +;; try 32, but perhaps 24 is better +(defvar texinfo-column-for-description 32 + "*Column at which descriptions start in a Texinfo menu.") + +(defun texinfo-insert-menu (menu-list node-name) + "Insert formatted menu at point. +Indents the first line of the description, if any, to the value of +texinfo-column-for-description. + +MENU-LIST has form: + + \(\(\"node-name1\" . \"description\"\) + \(\"node-name2\" . \"description\"\) ... \) + +However, the description field might be nil. + +Also, the node-name field might itself be a dotted pair (call it P) of +strings instead of just a string. In that case, the car of P +is the menu entry name, and the cdr of P is the node name." + + (insert "@menu\n") + (while menu-list + ;; Every menu entry starts with a star and a space. + (insert "* ") + + ;; Insert the node name (and menu entry name, if present). + (let ((node-part (car (car menu-list)))) + (if (stringp node-part) + ;; "Double colon" entry line; menu entry and node name are the same, + (insert (format "%s::" node-part)) + ;; "Single colon" entry line; menu entry and node name are different. + (insert (format "%s: %s." (car node-part) (cdr node-part))))) + + ;; Insert the description, if present. + (if (cdr (car menu-list)) + (progn + ;; Move to right place. + (indent-to texinfo-column-for-description 2) + ;; Insert description. + (insert (format "%s" (cdr (car menu-list)))))) + + (insert "\n") ; end this menu entry + (setq menu-list (cdr menu-list))) + (insert "@end menu") + (message + "Updated \"%s\" level menu following node: %s ... " level node-name)) + + +;;; Starting menu descriptions by inserting titles + +(defun texinfo-start-menu-description () + "In this menu entry, insert the node's section title as a description. +Position point at beginning of description ready for editing. +Do not insert a title if the line contains an existing description. + +You will need to edit the inserted text since a useful description +complements the node name rather than repeats it as a title does." + + (interactive) + (let (beginning end node-name title) + (save-excursion + (beginning-of-line) + (if (search-forward "* " (save-excursion (end-of-line) (point)) t) + (progn (skip-chars-forward " \t") + (setq beginning (point))) + (error "This is not a line in a menu!")) + + (cond + ;; "Double colon" entry line; menu entry and node name are the same, + ((search-forward "::" (save-excursion (end-of-line) (point)) t) + (if (looking-at "[ \t]*[^ \t\n]+") + (error "Descriptive text already exists.")) + (skip-chars-backward ": \t") + (setq node-name (buffer-substring beginning (point)))) + + ;; "Single colon" entry line; menu entry and node name are different. + ((search-forward ":" (save-excursion (end-of-line) (point)) t) + (skip-chars-forward " \t") + (setq beginning (point)) + ;; Menu entry line ends in a period, comma, or tab. + (if (re-search-forward "[.,\t]" + (save-excursion (forward-line 1) (point)) t) + (progn + (if (looking-at "[ \t]*[^ \t\n]+") + (error "Descriptive text already exists.")) + (skip-chars-backward "., \t") + (setq node-name (buffer-substring beginning (point)))) + ;; Menu entry line ends in a return. + (re-search-forward ".*\n" + (save-excursion (forward-line 1) (point)) t) + (skip-chars-backward " \t\n") + (setq node-name (buffer-substring beginning (point))) + (if (= 0 (length node-name)) + (error "No node name on this line.") + (insert ".")))) + (t (error "No node name on this line."))) + ;; Search for node that matches node name, and copy the section title. + (if (re-search-forward + (concat + "^@node[ \t]+" + node-name + ".*\n" ; match node line + "\\(" + "\\(\\(^@c \\|^@comment\\).*\n\\)" ; match comment line, if any + "\\|" ; or + "\\(^@ifinfo[ ]*\n\\)" ; ifinfo line, if any + "\\)?") + nil t) + (progn + (setq title + (buffer-substring + ;; skip over section type + (progn (forward-word 1) + ;; and over spaces + (skip-chars-forward " \t") + (point)) + (progn (end-of-line) + (skip-chars-backward " \t") + (point))))) + (error "Cannot find node to match node name in menu entry."))) + ;; Return point to the menu and insert the title. + (end-of-line) + (delete-region + (point) + (save-excursion (skip-chars-backward " \t") (point))) + (indent-to texinfo-column-for-description 2) + (save-excursion (insert title)))) + + +;;; Handling description indentation + +; Since the make-menu functions indent descriptions, these functions +; are useful primarily for indenting a single menu specially. + +(defun texinfo-indent-menu-description (column &optional region-p) + "Indent every description in menu following point to COLUMN. +Non-nil argument (prefix, if interactive) means indent every +description in every menu in the region. Does not indent second and +subsequent lines of a multi-line description." + + (interactive + "nIndent menu descriptions to (column number): \nP") + (save-excursion + (save-restriction + (widen) + (if (not region-p) + (progn + (re-search-forward "^@menu") + (texinfo-menu-indent-description column) + (message + "Indented descriptions in menu. You may save the buffer.")) + ;;else + (message "Indenting every menu description in region... ") + (goto-char (region-beginning)) + (while (and (< (point) (region-end)) + (texinfo-locate-menu-p)) + (forward-line 1) + (texinfo-menu-indent-description column)) + (message "Indenting done. You may save the buffer."))))) + +(defun texinfo-menu-indent-description (to-column-number) + "Indent the Texinfo file menu description to TO-COLUMN-NUMBER. +Start with point just after the word `menu' in the `@menu' line and +leave point on the line before the `@end menu' line. Does not indent +second and subsequent lines of a multi-line description." + (let* ((beginning-of-next-line (point))) + (while (< beginning-of-next-line + (save-excursion ; beginning of end menu line + (goto-char (texinfo-menu-end)) + (beginning-of-line) + (point))) + + (if (re-search-forward "\\* \\(.*::\\|.*: [^.,\t\n]+[.,\t]\\)" + (texinfo-menu-end) + t) + (progn + (let ((beginning-white-space (point))) + (skip-chars-forward " \t") ; skip over spaces + (if (looking-at "\\(@\\|\\w\\)+") ; if there is text + (progn + ;; remove pre-existing indentation + (delete-region beginning-white-space (point)) + (indent-to-column to-column-number)))))) + ;; position point at beginning of next line + (forward-line 1) + (setq beginning-of-next-line (point))))) + + +;;; Making the master menu + +(defun texinfo-master-menu (update-all-nodes-menus-p) + "Make a master menu for a whole Texinfo file. +Non-nil argument (prefix, if interactive) means first update all +existing nodes and menus. Remove pre-existing master menu, if there is one. + +This function creates a master menu that follows the top node. The +master menu includes every entry from all the other menus. It +replaces any existing ordinary menu that follows the top node. + +If called with a non-nil argument, this function first updates all the +menus in the buffer (incorporating descriptions from pre-existing +menus) before it constructs the master menu. + +The function removes the detailed part of an already existing master +menu. This action depends on the pre-exisitng master menu using the +standard `texinfo-master-menu-header'. + +The master menu has the following format, which is adapted from the +recommendation in the Texinfo Manual: + + * The first part contains the major nodes in the Texinfo file: the + nodes for the chapters, chapter-like sections, and the major + appendices. This includes the indices, so long as they are in + chapter-like sections, such as unnumbered sections. + + * The second and subsequent parts contain a listing of the other, + lower level menus, in order. This way, an inquirer can go + directly to a particular node if he or she is searching for + specific information. + +Each of the menus in the detailed node listing is introduced by the +title of the section containing the menu." + + (interactive "P") + (let ((case-fold-search t)) + (widen) + (goto-char (point-min)) + + ;; Move point to location after `top'. + (if (not (re-search-forward "^@node [ \t]*top[ \t]*\\(,\\|$\\)" nil t)) + (error "This buffer needs a Top node!")) + + (let ((first-chapter + (save-excursion + (or (re-search-forward "^@node" nil t) + (error "Too few nodes for a master menu!")) + (point)))) + (if (re-search-forward texinfo-master-menu-header first-chapter t) + ;; Remove detailed master menu listing + (progn + (goto-char (match-beginning 0)) + (let ((end-of-detailed-menu-descriptions + (save-excursion ; beginning of end menu line + (goto-char (texinfo-menu-end)) + (beginning-of-line) (forward-char -1) + (point)))) + (delete-region (point) end-of-detailed-menu-descriptions))))) + + (if update-all-nodes-menus-p + (progn + (message "Making a master menu in %s ...first updating all nodes... " + (buffer-name)) + (sleep-for 2) + (push-mark (point-max) t) + (goto-char (point-min)) + (texinfo-update-node t) + + (message "Updating all menus in %s ... " (buffer-name)) + (sleep-for 2) + (push-mark (point-max) t) + (goto-char (point-min)) + (texinfo-make-menu t))) + + (message "Now making the master menu in %s... " (buffer-name)) + (sleep-for 2) + (goto-char (point-min)) + (texinfo-insert-master-menu-list + (texinfo-master-menu-list)) + + ;; Remove extra newlines that texinfo-insert-master-menu-list + ;; may have inserted. + + (save-excursion + (goto-char (point-min)) + + (if (re-search-forward texinfo-master-menu-header nil t) + (progn + (goto-char (match-beginning 0)) + (insert "\n") + (delete-blank-lines) + (goto-char (point-min)))) + + (re-search-forward "^@menu") + (forward-line -1) + (delete-blank-lines) + + (re-search-forward "^@end menu") + (forward-line 1) + (delete-blank-lines)) + + (message + "Done...completed making master menu. You may save the buffer."))) + +(defun texinfo-master-menu-list () + "Return a list of menu entries and header lines for the master menu. + +Start with the menu for chapters and indices and then find each +following menu and the title of the node preceding that menu. + +The master menu list has this form: + + \(\(\(... \"entry-1-2\" \"entry-1\"\) \"title-1\"\) + \(\(... \"entry-2-2\" \"entry-2-1\"\) \"title-2\"\) + ...\) + +However, there does not need to be a title field." + + (let (master-menu-list) + (while (texinfo-locate-menu-p) + (setq master-menu-list + (cons (list + (texinfo-copy-menu) + (texinfo-copy-menu-title)) + master-menu-list))) + (reverse master-menu-list))) + +(defun texinfo-insert-master-menu-list (master-menu-list) + "Format and insert the master menu in the current buffer." + (goto-char (point-min)) + ;; Insert a master menu only after `Top' node and before next node + ;; \(or include file if there is no next node\). + (if (not (re-search-forward "^@node [ \t]*top[ \t]*\\(,\\|$\\)" nil t)) + (error "This buffer needs a Top node!")) + (let ((first-chapter + (save-excursion (re-search-forward "^@node\\|^@include") (point)))) + (if (not (re-search-forward "^@menu" first-chapter t)) + (error + "Buffer lacks ordinary `Top' menu in which to insert master."))) + (beginning-of-line) + (delete-region ; buffer must have ordinary top menu + (point) + (save-excursion (re-search-forward "^@end menu") (point))) + + (save-excursion ; leave point at beginning of menu + ;; Handle top of menu + (insert "\n@menu\n") + ;; Insert chapter menu entries + (setq this-very-menu-list (reverse (car (car master-menu-list)))) + ;; Tell user what is going on. + (message "Inserting chapter menu entry: %s ... " this-very-menu-list) + (while this-very-menu-list + (insert "* " (car this-very-menu-list) "\n") + (setq this-very-menu-list (cdr this-very-menu-list))) + + (setq master-menu-list (cdr master-menu-list)) + + ;; Only insert detailed master menu if there is one.... + (if (car (car master-menu-list)) + (insert texinfo-master-menu-header)) + + ;; Now, insert all the other menus + + ;; The menu master-menu-list has a form like this: + ;; ((("beta" "alpha") "title-A") + ;; (("delta" "gamma") "title-B")) + + (while master-menu-list + + (message + "Inserting menu for %s .... " (car (cdr (car master-menu-list)))) + ;; insert title of menu section + (insert "\n" (car (cdr (car master-menu-list))) "\n\n") + + ;; insert each menu entry + (setq this-very-menu-list (reverse (car (car master-menu-list)))) + (while this-very-menu-list + (insert "* " (car this-very-menu-list) "\n") + (setq this-very-menu-list (cdr this-very-menu-list))) + + (setq master-menu-list (cdr master-menu-list))) + + ;; Finish menu + (insert "@end menu\n\n"))) + +(defvar texinfo-master-menu-header + "\n --- The Detailed Node Listing ---\n" + "String inserted before lower level entries in Texinfo master menu. +It comes after the chapter-level menu entries.") + +(defun texinfo-locate-menu-p () + "Find the next menu in the texinfo file. +If found, leave point after word `menu' on the `@menu' line, and return t. +If a menu is not found, do not move point and return nil." + (re-search-forward "\\(^@menu\\)" nil t)) + +(defun texinfo-copy-menu-title () + "Return the title of the section preceding the menu as a string. +If such a title cannot be found, return an empty string. Do not move +point." + (let ((case-fold-search t)) + (save-excursion + (if (re-search-backward + (concat + "\\(^@top" + "\\|" ; or + texinfo-section-types-regexp ; all other section types + "\\)") + nil + t) + (progn + (beginning-of-line) + (forward-word 1) ; skip over section type + (skip-chars-forward " \t") ; and over spaces + (buffer-substring + (point) + (progn (end-of-line) (point)))) + "")))) + +(defun texinfo-copy-menu () + "Return the entries of an existing menu as a list. +Start with point just after the word `menu' in the `@menu' line +and leave point on the line before the `@end menu' line." + (let* (this-menu-list + (end-of-menu (texinfo-menu-end)) ; position of end of `@end menu' + (last-entry (save-excursion ; position of beginning of + ; last `* ' entry + (goto-char end-of-menu) + ;; handle multi-line description + (if (not (re-search-backward "^\* " nil t)) + (error "No entries in menu.")) + (point)))) + (while (< (point) last-entry) + (if (re-search-forward "^\* " end-of-menu t) + (progn + (setq this-menu-list + (cons + (buffer-substring + (point) + ;; copy multi-line descriptions + (save-excursion + (re-search-forward "\\(^\* \\|^@e\\)" nil t) + (- (point) 3))) + this-menu-list))))) + this-menu-list)) + + +;;; Determining the hierarchical level in the texinfo file + +(defun texinfo-specific-section-type () + "Return the specific type of next section, as a string. +For example, \"unnumberedsubsec\". Return \"top\" for top node. + +Searches forward for a section. Hence, point must be before the +section whose type will be found. Does not move point. Signal an +error if the node is not the top node and a section is not found." + (let ((case-fold-search t)) + (save-excursion + (cond + ((re-search-forward "^@node [ \t]*top[ \t]*\\(,\\|$\\)" +;;; Following search limit by cph but causes a bug +;;; (save-excursion +;;; (end-of-line) +;;; (point)) + nil + t) + "top") + ((re-search-forward texinfo-section-types-regexp nil t) + (buffer-substring (progn (beginning-of-line) ; copy its name + (1+ (point))) + (progn (forward-word 1) + (point)))) + (t + (error + "texinfo-specific-section-type: Chapter or section not found.")))))) + +(defun texinfo-hierarchic-level () + "Return the general hierarchal level of the next node in a texinfo file. +Thus, a subheading or appendixsubsec is of type subsection." + (let ((case-fold-search t)) + (cdr (assoc + (texinfo-specific-section-type) + texinfo-section-to-generic-alist)))) + + +;;; Locating the major positions + +(defun texinfo-update-menu-region-beginning (level) + "Locate beginning of higher level section this section is within. +Return position of the beginning of the node line; do not move point. +Thus, if this level is subsection, searches backwards for section node. +Only argument is a string of the general type of section." + (let ((case-fold-search t)) + ;; !! Known bug: if section immediately follows top node, this + ;; returns the beginning of the buffer as the beginning of the + ;; higher level section. + (cond + ((or (string-equal "top" level) + (string-equal "chapter" level)) + (save-excursion + (goto-char (point-min)) + (re-search-forward "^@node [ \t]*top[ \t]*\\(,\\|$\\)" nil t) + (beginning-of-line) + (point))) + (t + (save-excursion + (re-search-backward + (concat + "\\(^@node\\).*\n" ; match node line + "\\(\\(\\(^@c\\).*\n\\)" ; match comment line, if any + "\\|" ; or + "\\(^@ifinfo[ ]*\n\\)\\)?" ; ifinfo line, if any + (eval + (cdr (assoc level texinfo-update-menu-higher-regexps)))) + nil + 'goto-beginning) + (point)))))) + +(defun texinfo-update-menu-region-end (level) + "Locate end of higher level section this section is within. +Return position; do not move point. Thus, if this level is a +subsection, find the node for the section this subsection is within. +If level is top or chapter, returns end of file. Only argument is a +string of the general type of section." + (let ((case-fold-search t)) + (save-excursion + (if (re-search-forward + (concat + "\\(^@node\\).*\n" ; match node line + "\\(\\(\\(^@c\\).*\n\\)" ; match comment line, if any + "\\|" ; or + "\\(^@ifinfo[ ]*\n\\)\\)?" ; ifinfo line, if any + (eval + ;; Never finds end of level above chapter so goes to end. + (cdr (assoc level texinfo-update-menu-higher-regexps)))) + nil + 'goto-end) + (match-beginning 1) + (point-max))))) + +(defun texinfo-menu-first-node (beginning end) + "Locate first node of the section the menu will be placed in. +Return position; do not move point. +The menu will be located just before this position. + +First argument is the position of the beginning of the section in +which the menu will be located; second argument is the position of the +end of that region; it limits the search." + + (save-excursion + (goto-char beginning) + (forward-line 1) + (re-search-forward "^@node" end t) + (beginning-of-line) + (point))) + + +;;; Alists and regular expressions for defining hierarchical levels + +(defvar texinfo-section-to-generic-alist + '(("top" . "top") + + ("chapter" . "chapter") + ("unnumbered" . "chapter") + ("majorheading" . "chapter") + ("chapheading" . "chapter") + ("appendix" . "chapter") + + ("section" . "section") + ("unnumberedsec" . "section") + ("heading" . "section") + ("appendixsec" . "section") + + ("subsection" . "subsection") + ("unnumberedsubsec" . "subsection") + ("subheading" . "subsection") + ("appendixsubsec" . "subsection") + + ("subsubsection" . "subsubsection") + ("unnumberedsubsubsec" . "subsubsection") + ("subsubheading" . "subsubsection") + ("appendixsubsubsec" . "subsubsection")) + "*An alist of specific and corresponding generic Texinfo section types. +The keys are strings specifying specific types of section; the values +are strings of their corresponding general types.") + +;; We used to look for just sub, but that found @subtitle. +(defvar texinfo-section-types-regexp + "^@\\(chapter \\|sect\\|subs\\|subh\\|unnum\\|major\\|chapheading \\|heading \\|appendix\\)" + "Regexp matching chapter, section, other headings (but not the top node).") + +(defvar texinfo-chapter-level-regexp + "chapter\\|unnumbered \\|appendix \\|majorheading\\|chapheading" + "Regular expression matching just the Texinfo chapter level headings.") + +(defvar texinfo-section-level-regexp + "section\\|unnumberedsec\\|heading \\|appendixsec" + "Regular expression matching just the Texinfo section level headings.") + +(defvar texinfo-subsection-level-regexp + "subsection\\|unnumberedsubsec\\|subheading\\|appendixsubsec" + "Regular expression matching just the Texinfo subsection level headings.") + +(defvar texinfo-subsubsection-level-regexp + "subsubsection\\|unnumberedsubsubsec\\|subsubheading\\|appendixsubsubsec" + "Regular expression matching just the Texinfo subsubsection level headings.") + +(defvar texinfo-update-menu-same-level-regexps + '(("top" . "top[ \t]+") + ("chapter" . + (concat "\\(^@\\)\\(" texinfo-chapter-level-regexp "\\)[ \t]*")) + ("section" . + (concat "\\(^@\\)\\(" texinfo-section-level-regexp "\\)[ \t]*")) + ("subsection" . + (concat "\\(^@\\)\\(" texinfo-subsection-level-regexp "\\)[ \t]+")) + ("subsubsection" . + (concat "\\(^@\\)\\(" texinfo-subsubsection-level-regexp "\\)[ \t]+"))) + "*Regexps for searching for same level sections in a Texinfo file. +The keys are strings specifying the general hierarchical level in the +document; the values are regular expressions.") + +(defvar texinfo-update-menu-higher-regexps + '(("top" . "^@node [ \t]*DIR") + ("chapter" . "^@node [ \t]*top[ \t]*\\(,\\|$\\)") + ("section" . + (concat + "\\(^@\\(" + texinfo-chapter-level-regexp + "\\)[ \t]*\\)")) + ("subsection" . + (concat + "\\(^@\\(" + texinfo-section-level-regexp + "\\|" + texinfo-chapter-level-regexp + "\\)[ \t]*\\)")) + ("subsubsection" . + (concat + "\\(^@\\(" + texinfo-subsection-level-regexp + "\\|" + texinfo-section-level-regexp + "\\|" + texinfo-chapter-level-regexp + "\\)[ \t]*\\)"))) + "*Regexps for searching for higher level sections in a Texinfo file. +The keys are strings specifying the general hierarchical level in the +document; the values are regular expressions.") + +(defvar texinfo-update-menu-lower-regexps + '(("top" . + (concat + "\\(^@\\(" + texinfo-chapter-level-regexp + "\\|" + texinfo-section-level-regexp + "\\|" + texinfo-subsection-level-regexp + "\\|" + texinfo-subsubsection-level-regexp + "\\)[ \t]*\\)")) + ("chapter" . + (concat + "\\(^@\\(" + texinfo-section-level-regexp + "\\|" + texinfo-subsection-level-regexp + "\\|" + texinfo-subsubsection-level-regexp + "\\)[ \t]*\\)")) + ("section" . + (concat + "\\(^@\\(" + texinfo-subsection-level-regexp + "\\|" + texinfo-subsubsection-level-regexp + "\\)[ \t]+\\)")) + ("subsection" . + (concat + "\\(^@\\(" + texinfo-subsubsection-level-regexp + "\\)[ \t]+\\)")) + ("subsubsection" . "nothing lower")) + "*Regexps for searching for lower level sections in a Texinfo file. +The keys are strings specifying the general hierarchical level in the +document; the values are regular expressions.") + + +;;; Updating a node + +;;;###autoload +(defun texinfo-update-node (&optional region-p) + "Without any prefix argument, update the node in which point is located. +Non-nil argument (prefix, if interactive) means update the nodes in the +marked region. + +The functions for creating or updating nodes and menus, and their +keybindings, are: + + texinfo-update-node (&optional region-p) \\[texinfo-update-node] + texinfo-every-node-update () \\[texinfo-every-node-update] + texinfo-sequential-node-update (&optional region-p) + + texinfo-make-menu (&optional region-p) \\[texinfo-make-menu] + texinfo-all-menus-update () \\[texinfo-all-menus-update] + texinfo-master-menu () + + texinfo-indent-menu-description (column &optional region-p) + +The `texinfo-column-for-description' variable specifies the column to +which menu descriptions are indented. Its default value is 32." + + (interactive "P") + (if (not region-p) + ;; update a single node + (let ((auto-fill-function nil) (auto-fill-hook nil)) + (if (not (re-search-backward "^@node" (point-min) t)) + (error "Node line not found before this position.")) + (texinfo-update-the-node) + (message "Done...updated the node. You may save the buffer.")) + ;; else + (let ((auto-fill-function nil) + (auto-fill-hook nil) + (beginning (region-beginning)) + (end (region-end))) + (if (= end beginning) + (error "Please mark a region!")) + (save-restriction + (narrow-to-region beginning end) + (goto-char beginning) + (push-mark (point) t) + (while (re-search-forward "^@node" (point-max) t) + (beginning-of-line) + (texinfo-update-the-node)) + (message "Done...updated nodes in region. You may save the buffer."))))) + +;;;###autoload +(defun texinfo-every-node-update () + "Update every node in a Texinfo file." + (interactive) + (save-excursion + (push-mark (point-max) t) + (goto-char (point-min)) + ;; Using the mark to pass bounds this way + ;; is kludgy, but it's not worth fixing. -- rms. + (let ((mark-active t)) + (texinfo-update-node t)) + (message "Done...updated every node. You may save the buffer."))) + +(defun texinfo-update-the-node () + "Update one node. Point must be at the beginning of node line. +Leave point at the end of the node line." + (texinfo-check-for-node-name) + (texinfo-delete-existing-pointers) + (message "Updating node: %s ... " (texinfo-copy-node-name)) + (save-restriction + (widen) + (let* + ((case-fold-search t) + (level (texinfo-hierarchic-level)) + (beginning (texinfo-update-menu-region-beginning level)) + (end (texinfo-update-menu-region-end level))) + (if (string-equal level "top") + (texinfo-top-pointer-case) + ;; else + (texinfo-insert-pointer beginning end level 'next) + (texinfo-insert-pointer beginning end level 'previous) + (texinfo-insert-pointer beginning end level 'up) + (texinfo-clean-up-node-line))))) + +(defun texinfo-top-pointer-case () + "Insert pointers in the Top node. This is a special case. + +The `Next' pointer is a pointer to a chapter or section at a lower +hierarchical level in the file. The `Previous' and `Up' pointers are +to `(dir)'. Point must be at the beginning of the node line, and is +left at the end of the node line." + + (texinfo-clean-up-node-line) + (insert ", " + (save-excursion + ;; There may be an @chapter or other such command between + ;; the top node line and the next node line, as a title + ;; for an `ifinfo' section. This @chapter command must + ;; must be skipped. So the procedure is to search for + ;; the next `@node' line, and then copy its name. + (if (re-search-forward "^@node" nil t) + (progn + (beginning-of-line) + (texinfo-copy-node-name)) + " ")) + ", (dir), (dir)")) + +(defun texinfo-check-for-node-name () + "Determine whether the node has a node name. Prompt for one if not. +Point must be at beginning of node line. Does not move point." + (save-excursion + (let ((initial (texinfo-copy-next-section-title))) + ;; This is not clean. Use `interactive' to read the arg. + (forward-word 1) ; skip over node command + (skip-chars-forward " \t") ; and over spaces + (if (not (looking-at "[^,\t\n ]+")) ; regexp based on what Info looks for + ; alternatively, use "[a-zA-Z]+" + (let ((node-name + (read-from-minibuffer + "Node name (use no @, commas, colons, or apostrophes): " + initial))) + (insert " " node-name)))))) + +(defun texinfo-delete-existing-pointers () + "Delete `Next', `Previous', and `Up' pointers. +Starts from the current position of the cursor, and searches forward +on the line for a comma and if one is found, deletes the rest of the +line, including the comma. Leaves point at beginning of line." + (let ((eol-point (save-excursion (end-of-line) (point)))) + (if (search-forward "," eol-point t) + (delete-region (1- (point)) eol-point))) + (beginning-of-line)) + +(defun texinfo-find-pointer (beginning end level direction) + "Move point to section associated with next, previous, or up pointer. +Return type of pointer (either 'normal or 'no-pointer). + +The first and second arguments bound the search for a pointer to the +beginning and end, respectively, of the enclosing higher level +section. The third argument is a string specifying the general kind +of section such as \"chapter\ or \"section\". When looking for the +`Next' pointer, the section found will be at the same hierarchical +level in the Texinfo file; when looking for the `Previous' pointer, +the section found will be at the same or higher hierarchical level in +the Texinfo file; when looking for the `Up' pointer, the section found +will be at some level higher in the Texinfo file. The fourth argument +\(one of 'next, 'previous, or 'up\) specifies whether to find the +`Next', `Previous', or `Up' pointer." + (let ((case-fold-search t)) + (cond ((eq direction 'next) + (forward-line 3) ; skip over current node + ;; Search for section commands accompanied by node lines; + ;; ignore section commands in the middle of nodes. + (if (re-search-forward + ;; A `Top' node is never a next pointer, so won't find it. + (concat + ;; Match node line. + "\\(^@node\\).*\n" + ;; Match comment or ifinfo line, if any + "\\(\\(\\(^@c\\).*\n\\)\\|\\(^@ifinfo[ ]*\n\\)\\)?" + (eval + (cdr (assoc level texinfo-update-menu-same-level-regexps)))) + end + t) + 'normal + 'no-pointer)) + ((eq direction 'previous) + (if (re-search-backward + (concat + "\\(" + ;; Match node line. + "\\(^@node\\).*\n" + ;; Match comment or ifinfo line, if any + "\\(\\(\\(^@c\\).*\n\\)\\|\\(^@ifinfo[ ]*\n\\)\\)?" + (eval + (cdr (assoc level texinfo-update-menu-same-level-regexps))) + "\\|" + ;; Match node line. + "\\(^@node\\).*\n" + ;; Match comment or ifinfo line, if any + "\\(\\(\\(^@c\\).*\n\\)\\|\\(^@ifinfo[ ]*\n\\)\\)?" + (eval + (cdr (assoc level texinfo-update-menu-higher-regexps))) + "\\|" + ;; Handle `Top' node specially. + "^@node [ \t]*top[ \t]*\\(,\\|$\\)" + "\\)") + beginning + t) + 'normal + 'no-pointer)) + ((eq direction 'up) + (if (re-search-backward + (concat + "\\(" + ;; Match node line. + "\\(^@node\\).*\n" + ;; Match comment or ifinfo line, if any + "\\(\\(\\(^@c\\).*\n\\)\\|\\(^@ifinfo[ ]*\n\\)\\)?" + (eval (cdr (assoc level texinfo-update-menu-higher-regexps))) + "\\|" + ;; Handle `Top' node specially. + "^@node [ \t]*top[ \t]*\\(,\\|$\\)" + "\\)") + (save-excursion + (goto-char beginning) + (beginning-of-line) + (point)) + t) + 'normal + 'no-pointer)) + (t + (error "texinfo-find-pointer: lack proper arguments"))))) + +(defun texinfo-pointer-name (kind) + "Return the node name preceding the section command. +The argument is the kind of section, either normal or no-pointer." + (let (name) + (cond ((eq kind 'normal) + (end-of-line) ; this handles prev node top case + (re-search-backward ; when point is already + "^@node" ; at the beginning of @node line + (save-excursion (forward-line -3)) + t) + (setq name (texinfo-copy-node-name))) + ((eq kind 'no-pointer) + (setq name " "))) ; put a blank in the pointer slot + name)) + +(defun texinfo-insert-pointer (beginning end level direction) + "Insert the `Next', `Previous' or `Up' node name at point. +Move point forward. + +The first and second arguments bound the search for a pointer to the +beginning and end, respectively, of the enclosing higher level +section. The third argument is the hierarchical level of the Texinfo +file, a string such as \"section\". The fourth argument is direction +towards which the pointer is directed, one of `next, `previous, or +'up." + + (end-of-line) + (insert + ", " + (save-excursion + (texinfo-pointer-name + (texinfo-find-pointer beginning end level direction))))) + +(defun texinfo-clean-up-node-line () + "Remove extra commas, if any, at end of node line." + (end-of-line) + (skip-chars-backward ", ") + (delete-region (point) (save-excursion (end-of-line) (point)))) + + +;;; Updating nodes sequentially +; These sequential update functions insert `Next' or `Previous' +; pointers that point to the following or preceding nodes even if they +; are at higher or lower hierarchical levels. This means that if a +; section contains one or more subsections, the section's `Next' +; pointer will point to the subsection and not the following section. +; (The subsection to which `Next' points will most likely be the first +; item on the section's menu.) + +;;;###autoload +(defun texinfo-sequential-node-update (&optional region-p) + "Update one node (or many) in a Texinfo file with sequential pointers. + +This function causes the `Next' or `Previous' pointer to point to the +immediately preceding or following node, even if it is at a higher or +lower hierarchical level in the document. Continually pressing `n' or +`p' takes you straight through the file. + +Without any prefix argument, update the node in which point is located. +Non-nil argument (prefix, if interactive) means update the nodes in the +marked region. + +This command makes it awkward to navigate among sections and +subsections; it should be used only for those documents that are meant +to be read like a novel rather than a reference, and for which the +Info `g*' command is inadequate." + + (interactive "P") + (if (not region-p) + ;; update a single node + (let ((auto-fill-function nil) (auto-fill-hook nil)) + (if (not (re-search-backward "^@node" (point-min) t)) + (error "Node line not found before this position.")) + (texinfo-sequentially-update-the-node) + (message + "Done...sequentially updated the node . You may save the buffer.")) + ;; else + (let ((auto-fill-function nil) + (auto-fill-hook nil) + (beginning (region-beginning)) + (end (region-end))) + (if (= end beginning) + (error "Please mark a region!")) + (save-restriction + (narrow-to-region beginning end) + (goto-char beginning) + (push-mark (point) t) + (while (re-search-forward "^@node" (point-max) t) + (beginning-of-line) + (texinfo-sequentially-update-the-node)) + (message + "Done...updated the nodes in sequence. You may save the buffer."))))) + +(defun texinfo-sequentially-update-the-node () + "Update one node such that the pointers are sequential. +A `Next' or `Previous' pointer points to any preceding or following node, +regardless of its hierarchical level." + + (texinfo-check-for-node-name) + (texinfo-delete-existing-pointers) + (message + "Sequentially updating node: %s ... " (texinfo-copy-node-name)) + (save-restriction + (widen) + (let* + ((case-fold-search t) + (level (texinfo-hierarchic-level))) + (if (string-equal level "top") + (texinfo-top-pointer-case) + ;; else + (texinfo-sequentially-insert-pointer level 'next) + (texinfo-sequentially-insert-pointer level 'previous) + (texinfo-sequentially-insert-pointer level 'up) + (texinfo-clean-up-node-line))))) + +(defun texinfo-sequentially-find-pointer (level direction) + "Find next or previous pointer sequentially in Texinfo file, or up pointer. +Move point to section associated with the pointer. Find point even if +it is in a different section. + +Return type of pointer (either 'normal or 'no-pointer). + +The first argument is a string specifying the general kind of section +such as \"chapter\ or \"section\". The section found will be at the +same hierarchical level in the Texinfo file, or, in the case of the up +pointer, some level higher. The second argument (one of 'next, +'previous, or 'up) specifies whether to find the `Next', `Previous', +or `Up' pointer." + (let ((case-fold-search t)) + (cond ((eq direction 'next) + (forward-line 3) ; skip over current node + (if (re-search-forward + texinfo-section-types-regexp + (point-max) + t) + 'normal + 'no-pointer)) + ((eq direction 'previous) + (if (re-search-backward + texinfo-section-types-regexp + (point-min) + t) + 'normal + 'no-pointer)) + ((eq direction 'up) + (if (re-search-backward + (eval (cdr (assoc level texinfo-update-menu-higher-regexps))) + beginning + t) + 'normal + 'no-pointer)) + (t + (error "texinfo-sequential-find-pointer: lack proper arguments"))))) + +(defun texinfo-sequentially-insert-pointer (level direction) + "Insert the `Next', `Previous' or `Up' node name at point. +Move point forward. + +The first argument is the hierarchical level of the Texinfo file, a +string such as \"section\". The second argument is direction, one of +`next, `previous, or 'up." + + (end-of-line) + (insert + ", " + (save-excursion + (texinfo-pointer-name + (texinfo-sequentially-find-pointer level direction))))) + + +;;; Inserting `@node' lines +; The `texinfo-insert-node-lines' function inserts `@node' lines as needed +; before the `@chapter', `@section', and such like lines of a region +; in a Texinfo file. + +(defun texinfo-insert-node-lines (beginning end &optional title-p) + "Insert missing `@node' lines in region of Texinfo file. +Non-nil argument (prefix, if interactive) means also to insert the +section titles as node names; and also to insert the section titles as +node names in pre-existing @node lines that lack names." + (interactive "r\nP") + + ;; Use marker; after inserting node lines, leave point at end of + ;; region and mark at beginning. + + (let (beginning-marker end-marker title last-section-position) + + ;; Save current position on mark ring and set mark to end. + (push-mark end t) + (setq end-marker (mark-marker)) + + (goto-char beginning) + (while (re-search-forward + texinfo-section-types-regexp + end-marker + 'end) + ;; Copy title if desired. + (if title-p + (progn + (beginning-of-line) + (forward-word 1) + (skip-chars-forward " \t") + (setq title (buffer-substring + (point) + (save-excursion (end-of-line) (point)))))) + ;; Insert node line if necessary. + (if (re-search-backward + "^@node" + ;; Avoid finding previous node line if node lines are close. + (or last-section-position + (save-excursion (forward-line -2) (point))) t) + ;; @node is present, and point at beginning of that line + (forward-word 1) ; Leave point just after @node. + ;; Else @node missing; insert one. + (beginning-of-line) ; Beginning of `@section' line. + (insert "@node\n") + (backward-char 1)) ; Leave point just after `@node'. + ;; Insert title if desired. + (if title-p + (progn + (skip-chars-forward " \t") + ;; Use regexp based on what info looks for + ;; (alternatively, use "[a-zA-Z]+"); + ;; this means we only insert a title if none exists. + (if (not (looking-at "[^,\t\n ]+")) + (progn + (beginning-of-line) + (forward-word 1) + (insert " " title) + (message "Inserted title %s ... " title))))) + ;; Go forward beyond current section title. + (re-search-forward texinfo-section-types-regexp + (save-excursion (forward-line 3) (point)) t) + (setq last-section-position (point)) + (forward-line 1)) + + ;; Leave point at end of region, mark at beginning. + (set-mark beginning) + + (if title-p + (message + "Done inserting node lines and titles. You may save the buffer.") + (message "Done inserting node lines. You may save the buffer.")))) + + +;;; Update and create menus for multi-file Texinfo sources + +;; 1. M-x texinfo-multiple-files-update +;; +;; Read the include file list of an outer Texinfo file and +;; update all highest level nodes in the files listed and insert a +;; main menu in the outer file after its top node. + +;; 2. C-u M-x texinfo-multiple-files-update +;; +;; Same as 1, but insert a master menu. (Saves reupdating lower +;; level menus and nodes.) This command simply reads every menu, +;; so if the menus are wrong, the master menu will be wrong. +;; Similarly, if the lower level node pointers are wrong, they +;; will stay wrong. + +;; 3. C-u 2 M-x texinfo-multiple-files-update +;; +;; Read the include file list of an outer Texinfo file and +;; update all nodes and menus in the files listed and insert a +;; master menu in the outer file after its top node. + +;;; Note: these functions: +;;; +;;; * Do not save or delete any buffers. You may fill up your memory. +;;; * Do not handle any pre-existing nodes in outer file. +;;; Hence, you may need a file for indices. + + +;;; Auxiliary functions for multiple file updating + +(defun texinfo-multi-file-included-list (outer-file) + "Return a list of the included files in OUTER-FILE." + (let ((included-file-list (list outer-file)) + start) + (save-excursion + (switch-to-buffer (find-file-noselect outer-file)) + (widen) + (goto-char (point-min)) + (while (re-search-forward "^@include" nil t) + (skip-chars-forward " \t") + (setq start (point)) + (end-of-line) + (skip-chars-backward " \t") + (setq included-file-list + (cons (buffer-substring start (point)) + included-file-list))) + (nreverse included-file-list)))) + +(defun texinfo-copy-next-section-title () + "Return the name of the immediately following section as a string. + +Start with point at the beginning of the node line. Leave point at the +same place. If there is no title, returns an empty string." + + (save-excursion + (end-of-line) + (let ((node-end (or + (save-excursion + (if (re-search-forward "\\(^@node\\)" nil t) + (match-beginning 0))) + (point-max)))) + (if (re-search-forward texinfo-section-types-regexp node-end t) + (progn + (beginning-of-line) + ;; copy title + (let ((title + (buffer-substring + (progn (forward-word 1) ; skip over section type + (skip-chars-forward " \t") ; and over spaces + (point)) + (progn (end-of-line) (point))))) + title)) + "")))) + +(defun texinfo-multi-file-update (files &optional update-everything) + "Update first node pointers in each file in FILES. +Return a list of the node names. + +The first file in the list is an outer file; the remaining are +files included in the outer file with `@include' commands. + +If optional arg UPDATE-EVERYTHING non-nil, update every menu and +pointer in each of the included files. + +Also update the `Top' level node pointers of the outer file. + +Requirements: + + * the first file in the FILES list must be the outer file, + * each of the included files must contain exactly one highest + hierarchical level node, + * this node must be the first node in the included file, + * each highest hierarchical level node must be of the same type. + +Thus, normally, each included file contains one, and only one, +chapter." + +; The menu-list has the form: +; +; \(\(\"node-name1\" . \"title1\"\) +; \(\"node-name2\" . \"title2\"\) ... \) +; +; However, there does not need to be a title field and this function +; does not fill it; however a comment tells you how to do so. +; You would use the title field if you wanted to insert titles in the +; description slot of a menu as a description. + + (let ((case-fold-search t) + menu-list) + + ;; Find the name of the first node of the first included file. + (switch-to-buffer (find-file-noselect (car (cdr files)))) + (widen) + (goto-char (point-min)) + (if (not (re-search-forward "^@node" nil t)) + (error "No `@node' line found in %s !" (buffer-name))) + (beginning-of-line) + (texinfo-check-for-node-name) + (setq next-node-name (texinfo-copy-node-name)) + + (setq menu-list + (cons (cons + next-node-name + (prog1 "" (forward-line 1))) + ;; Use following to insert section titles automatically. + ;; (texinfo-copy-next-section-title) + menu-list)) + + ;; Go to outer file + (switch-to-buffer (find-file-noselect (car files))) + (goto-char (point-min)) + (if (not (re-search-forward "^@node [ \t]*top[ \t]*\\(,\\|$\\)" nil t)) + (error "This buffer needs a Top node!")) + (beginning-of-line) + (texinfo-delete-existing-pointers) + (end-of-line) + (insert ", " next-node-name ", (dir), (dir)") + (beginning-of-line) + (setq previous-node-name "Top") + (setq files (cdr files)) + + (while files + + (if (not (cdr files)) + ;; No next file + (setq next-node-name "") + ;; Else, + ;; find the name of the first node in the next file. + (switch-to-buffer (find-file-noselect (car (cdr files)))) + (widen) + (goto-char (point-min)) + (if (not (re-search-forward "^@node" nil t)) + (error "No `@node' line found in %s !" (buffer-name))) + (beginning-of-line) + (texinfo-check-for-node-name) + (setq next-node-name (texinfo-copy-node-name)) + (setq menu-list + (cons (cons + next-node-name + (prog1 "" (forward-line 1))) + ;; Use following to insert section titles automatically. + ;; (texinfo-copy-next-section-title) + menu-list))) + + ;; Go to node to be updated. + (switch-to-buffer (find-file-noselect (car files))) + (goto-char (point-min)) + (if (not (re-search-forward "^@node" nil t)) + (error "No `@node' line found in %s !" (buffer-name))) + (beginning-of-line) + + ;; Update other menus and nodes if requested. + (if update-everything (texinfo-all-menus-update t)) + + (beginning-of-line) + (texinfo-delete-existing-pointers) + (end-of-line) + (insert ", " next-node-name ", " previous-node-name ", " up-node-name) + + (beginning-of-line) + (setq previous-node-name (texinfo-copy-node-name)) + + (setq files (cdr files))) + (nreverse menu-list))) + +(defun texinfo-multi-files-insert-main-menu (menu-list) + "Insert formatted main menu at point. +Indents the first line of the description, if any, to the value of +texinfo-column-for-description." + + (insert "@menu\n") + (while menu-list + ;; Every menu entry starts with a star and a space. + (insert "* ") + + ;; Insert the node name (and menu entry name, if present). + (let ((node-part (car (car menu-list)))) + (if (stringp node-part) + ;; "Double colon" entry line; menu entry and node name are the same, + (insert (format "%s::" node-part)) + ;; "Single colon" entry line; menu entry and node name are different. + (insert (format "%s: %s." (car node-part) (cdr node-part))))) + + ;; Insert the description, if present. + (if (cdr (car menu-list)) + (progn + ;; Move to right place. + (indent-to texinfo-column-for-description 2) + ;; Insert description. + (insert (format "%s" (cdr (car menu-list)))))) + + (insert "\n") ; end this menu entry + (setq menu-list (cdr menu-list))) + (insert "@end menu")) + +(defun texinfo-multi-file-master-menu-list (files-list) + "Return master menu list from files in FILES-LIST. +Menu entries in each file collected using `texinfo-master-menu-list'. + +The first file in FILES-LIST must be the outer file; the others must +be the files included within it. A main menu must already exist." + (save-excursion + (let (master-menu-list) + (while files-list + (switch-to-buffer (find-file-noselect (car files-list))) + (message "Working on: %s " (current-buffer)) + (goto-char (point-min)) + (setq master-menu-list + (append master-menu-list (texinfo-master-menu-list))) + (setq files-list (cdr files-list))) + master-menu-list))) + + +;;; The multiple-file update function + +(defun texinfo-multiple-files-update + (outer-file &optional update-everything make-master-menu) + "Update first node pointers in each file included in OUTER-FILE; +create or update the `Top' level node pointers and the main menu in +the outer file that refers to such nodes. This does not create or +update menus or pointers within the included files. + +With optional MAKE-MASTER-MENU argument (prefix arg, if interactive), +insert a master menu in OUTER-FILE in addition to creating or updating +pointers in the first @node line in each included file and creating or +updating the `Top' level node pointers of the outer file. This does +not create or update other menus and pointers within the included +files. + +With optional UPDATE-EVERYTHING argument (numeric prefix arg, if +interactive), update all the menus and all the `Next', `Previous', and +`Up' pointers of all the files included in OUTER-FILE before inserting +a master menu in OUTER-FILE. Also, update the `Top' level node +pointers of OUTER-FILE. + +Notes: + + * this command does NOT save any files--you must save the + outer file and any modified, included files. + + * except for the `Top' node, this command does NOT handle any + pre-existing nodes in the outer file; hence, indices must be + enclosed in an included file. + +Requirements: + + * each of the included files must contain exactly one highest + hierarchical level node, + * this highest node must be the first node in the included file, + * each highest hierarchical level node must be of the same type. + +Thus, normally, each included file contains one, and only one, +chapter." + + (interactive (cons + (read-string + "Name of outer `include' file: " + (buffer-file-name)) + (cond ((not current-prefix-arg) + '(nil nil)) + ((listp current-prefix-arg) + '(t nil)) ; make-master-menu + ((numberp current-prefix-arg) + '(t t)) ; update-everything + ))) + + (let* ((included-file-list (texinfo-multi-file-included-list outer-file)) + (files included-file-list) + main-menu-list + next-node-name + previous-node-name + (up-node-name "Top")) + +;;; Update the pointers +;;; and collect the names of the nodes and titles + (setq main-menu-list (texinfo-multi-file-update files update-everything)) + +;;; Insert main menu + + ;; Go to outer file + (switch-to-buffer (find-file-noselect (car included-file-list))) + (if (texinfo-old-menu-p + (point-min) + (save-excursion + (re-search-forward "^@include") + (beginning-of-line) + (point))) + + ;; If found, leave point after word `menu' on the `@menu' line. + (progn + (texinfo-incorporate-descriptions main-menu-list) + ;; Delete existing menu. + (beginning-of-line) + (delete-region + (point) + (save-excursion (re-search-forward "^@end menu") (point))) + ;; Insert main menu + (texinfo-multi-files-insert-main-menu main-menu-list)) + + ;; Else no current menu; insert it before `@include' + (texinfo-multi-files-insert-main-menu main-menu-list)) + +;;; Insert master menu + + (if make-master-menu + (progn + ;; First, removing detailed part of any pre-existing master menu + (goto-char (point-min)) + (if (re-search-forward texinfo-master-menu-header nil t) + ;; Remove detailed master menu listing + (progn + (goto-char (match-beginning 0)) + (let ((end-of-detailed-menu-descriptions + (save-excursion ; beginning of end menu line + (goto-char (texinfo-menu-end)) + (beginning-of-line) (forward-char -1) + (point)))) + (delete-region (point) end-of-detailed-menu-descriptions)))) + + ;; Create a master menu and insert it + (texinfo-insert-master-menu-list + (texinfo-multi-file-master-menu-list + included-file-list))))) + + ;; Remove unwanted extra lines. + (save-excursion + (goto-char (point-min)) + + (re-search-forward "^@menu") + (forward-line -1) + (insert "\n") ; Ensure at least one blank line. + (delete-blank-lines) + + (re-search-forward "^@end menu") + (forward-line 1) + (insert "\n") ; Ensure at least one blank line. + (delete-blank-lines)) + + (message "Multiple files updated.")) + + +;;; Place `provide' at end of file. +(provide 'texnfo-upd) + +;;; texnfo-upd.el ends here |