;;; sb-html.el --- provide hierarchical speedbar menu's for HTML files
;; Copyright (c) 2001, 2002 Richard Y. Kim
;; Author: Richard Y. Kim, <firstname.lastname@example.org>
;; Maintainer: Richard Y. Kim, <email@example.com>
;; Created: Mon Apr 09 09:44:06 2001
;; Version: $Id$
;; Keywords: speedbar, html
;; This program 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 of
;; the License, or (at your option) any later version.
;; This program 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 this program; if not, write to the Free
;; Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
;; MA 02110-1301 USA
;; This small add-on to speedbar provides an alternate way to view HTML
;; documents which shows the natural hierarchy of the document based
;; on H1, H2, ... H6 tags.
;; This code is a simple modification of sb-texinfo.el which comes
;; with speedbar.
;; Installation procedure:
;; Install speedbar 0.12 or later.
;; Add the following to your ~/.emacs file:
;; (eval-after-load "speedbar" '(load-library "sb-html"))
;; Known Problems:
;; Perhaps <HEAD> and <BODY> should be treated as H0 tag?
;;; Change Log:
;;; 1.1 - modified regexp based on Eric's suggestion.
;;; 1.0 - sent to Eric Ludlam.
(require 'sb-texinfo) ; for speedbar-format-texinfo-list
;; Attach these new functions to handle texinfo-mode.
'(speedbar-fetch-dynamic-html . speedbar-insert-html-list))
;; This returns t if the major mode of the current buffer is not
;; 'html-helper-mode. If it is 'html-helper-mode, then this returns a
;; list where each element is (LEVEL NAME . MARKER). LEVEL is 0, 1, 2,
;; 3, 4, or 5 corresponding to H1, H2, H3, H4, H5 an H6
;; tags. respectively. NAME is the name of the section. MARKER is
;; emacs marker that points to the beginning of the section. The
;; elements in the list returned are in ascending order of the
;; MARKER. This function along with it's parter,
;; speedbar-insert-html-list, are designed to be added to the
;; speedbar-dynamic-tags-function-list list.
;; This function is based on `speedbar-fetch-dynamic-texinfo'.
(defun speedbar-fetch-dynamic-html ( filename )
(set-buffer (find-file-noselect filename))
(if (not (or (eq major-mode 'html-helper-mode)
(eq major-mode 'html-mode)))
;; Set speedbar-tag-hierarchy-method to nil so that
;; speedbar-create-tag-hierarchy won't reorder the list.
;; Make it buffer local so that the global value is not touched.
(setq speedbar-tag-hierarchy-method nil)
(let ((case-fold-search t) ; HTML tags are case insensitive
pos-beg title level alist beg)
;; regexp below will not work if `>' appears within an attribute
;; value, e.g., <h1 foo="I'm a weird value >"> ... </h1>
(while (re-search-forward "<h\\([1-6]\\)\\b[^>]*>\\s-*" nil t)
(setq beg (match-end 0))
(goto-char (match-beginning 0))
(setq pos-beg (point-marker))
(setq level (1- (read (match-string 1))))
(re-search-forward (concat "\\s-*</h" (match-string 1) "\\b"))
(setq title (buffer-substring beg (match-beginning 0)))
(setq alist (cons (cons level (cons title pos-beg)) alist)))
(fset 'speedbar-format-html-list 'speedbar-format-texinfo-list)
(defun speedbar-insert-html-list (indent lst)
(speedbar-insert-generic-list indent (speedbar-format-html-list lst 0)
;;; sb-html.el ends here