u-tools/apps/tar/doc/mastermenu.el

   1 ;;; mastermenu.el --- Redefinition of texinfo-master-menu-list
   2
   3 ;; Copyright (C) 2006, 2007 Free Software Foundation, Inc.
   4
   5 ;; Author: Sergey Poznyakoff
   6 ;; Maintainer: bug-tar@gnu.org
   7 ;; Keywords: maint, tex, docs
   8
   9 ;; This file is part of GNU tar documentation suite
  10
  11 ;; This program is free software; you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 3, or (at your option)
  14 ;; any later version.
  15
  16 ;; This program is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with this program; if not, write to the Free Software Foundation,
  23 ;; Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  24
  25 ;;; Commentary:
  26
  27 ;; This file redefines texinfo-master-menu-list so that it takes into
  28 ;; account included files.
  29
  30 ;; Known bugs: @menu without previous sectioning command will inherit
  31 ;; documentation string from the previous menu. However, since such a
  32 ;; menu is illegal in a texinfo file, we can live with it.
  33
  34 (require 'texinfo)
  35 (require 'texnfo-upd)
  36
  37 (defun texinfo-master-menu-list-recursive (title)
  38   "Auxiliary function used by `texinfo-master-menu-list'."
  39   (save-excursion
  40     (let (master-menu-list)
  41       (while (re-search-forward "\\(^@menu\\|^@include\\)" nil t)
  42         (cond
  43          ((string= (match-string 0) "@include")
  44           (skip-chars-forward " \t")
  45           (let ((included-name (let ((start (point)))
  46                                  (end-of-line)
  47                                  (skip-chars-backward " \t")
  48                                  (buffer-substring start (point)))))
  49             (end-of-line)
  50             (let ((prev-title (texinfo-copy-menu-title)))
  51               (save-excursion
  52                 (set-buffer (find-file-noselect included-name))
  53                 (setq master-menu-list
  54                       (append (texinfo-master-menu-list-recursive prev-title)
  55                               master-menu-list))))))
  56          (t
  57           (setq master-menu-list
  58                 (cons (list
  59                        (texinfo-copy-menu)
  60                        (let ((menu-title (texinfo-copy-menu-title)))
  61                          (if (string= menu-title "")
  62                              title
  63                            menu-title)))
  64                       master-menu-list)))))
  65       master-menu-list)))
  66
  67 (defun texinfo-master-menu-list ()
  68   "Return a list of menu entries and header lines for the master menu,
  69 recursing into included files.
  70
  71 Start with the menu for chapters and indices and then find each
  72 following menu and the title of the node preceding that menu.
  73
  74 The master menu list has this form:
  75
  76     \(\(\(... \"entry-1-2\"  \"entry-1\"\) \"title-1\"\)
  77       \(\(... \"entry-2-2\"  \"entry-2-1\"\) \"title-2\"\)
  78       ...\)
  79
  80 However, there does not need to be a title field."
  81
  82   (reverse (texinfo-master-menu-list-recursive "")))
  83
  84 (defun make-master-menu ()
  85   "Create master menu in the first Emacs argument."
  86   (find-file (car command-line-args-left))
  87   (texinfo-master-menu nil)
  88   (save-buffer))
  89
  90
  91 ;;; mastermenu.el ends here