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comparison lisp/w3/w3-hot.el @ 0:376386a54a3c r19-14

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date Mon, 13 Aug 2007 08:45:50 +0200
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1 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2 ;;; Copyright (c) 1993, 1994, 1995 by William M. Perry (wmperry@spry.com)
3 ;;;
4 ;;; This file is not part of GNU Emacs, but the same permissions apply.
5 ;;;
6 ;;; GNU Emacs is free software; you can redistribute it and/or modify
7 ;;; it under the terms of the GNU General Public License as published by
8 ;;; the Free Software Foundation; either version 2, or (at your option)
9 ;;; any later version.
10 ;;;
11 ;;; GNU Emacs is distributed in the hope that it will be useful,
12 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 ;;; GNU General Public License for more details.
15 ;;;
16 ;;; You should have received a copy of the GNU General Public License
17 ;;; along with GNU Emacs; see the file COPYING. If not, write to
18 ;;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
19 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
20
21 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
22 ;;; Structure for hotlists
23 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
24 ;;; (
25 ;;; ("name of item1" . "http://foo.bar.com/") ;; A single item in hotlist
26 ;;; ("name of item2" . ( ;; A sublist
27 ;;; ("name of item3" . "http://www.ack.com/")
28 ;;; ))
29 ;;; ) ; end of hotlist
30 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
31 (require 'w3-vars)
32
33 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
34 ;;; Hotlist Handling Code
35 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
36 (defvar w3-html-bookmarks nil)
37
38 (defun w3-read-html-bookmarks (fname)
39 "Import an HTML file into the Emacs-w3 format."
40 (interactive "fBookmark file: ")
41 (if (not (file-readable-p fname))
42 (error "Can not read %s..." fname))
43 (save-excursion
44 (set-buffer (get-buffer-create " *bookmark-work*"))
45 (erase-buffer)
46 (insert-file-contents fname)
47 (let* ((w3-debug-html nil)
48 (bkmarks nil)
49 (parse (w3-parse-buffer (current-buffer) t)))
50 (setq parse w3-last-parse-tree
51 bkmarks (nreverse (w3-grok-html-bookmarks parse))
52 w3-html-bookmarks bkmarks))))
53
54 (eval-when-compile
55 (defvar cur-stack nil)
56 (defvar cur-title nil)
57 (defmacro push-new-menu ()
58 '(setq cur-stack (cons (list "") cur-stack)))
59
60 (defmacro push-new-item (title href)
61 (` (setcar cur-stack (cons (vector (, title) (list 'w3-fetch (, href)) t)
62 (car cur-stack)))))
63 ;;(` (setcar cur-stack (cons (cons (, title) (, href)) (car cur-stack)))))
64
65 (defmacro finish-submenu ()
66 '(let ((x (nreverse (car cur-stack))))
67 (and x (setcar x (car cur-title)))
68 (setq cur-stack (cdr cur-stack)
69 cur-title (cdr cur-title))
70 (if cur-stack
71 (setcar cur-stack (cons x (car cur-stack)))
72 (setq cur-stack (list x)))))
73 )
74
75 (defun w3-grok-html-bookmarks-internal (tree)
76 (let (node tag content args)
77 (while tree
78 (setq node (car tree)
79 tree (cdr tree)
80 tag (and (listp node) (nth 0 node))
81 args (and (listp node) (nth 1 node))
82 content (and (listp node) (nth 2 node)))
83 (cond
84 ((eq tag 'title)
85 (setq cur-title (list (w3-normalize-spaces (car content))))
86 (w3-grok-html-bookmarks-internal content))
87 ((eq tag 'dl)
88 (push-new-menu)
89 (w3-grok-html-bookmarks-internal content)
90 (finish-submenu))
91 ((and (eq tag 'dt)
92 (stringp (car content)))
93 (setq cur-title (cons (w3-normalize-spaces (car content))
94 cur-title)))
95 ((and (eq tag 'a)
96 (stringp (car-safe content))
97 (cdr-safe (assq 'href args)))
98 (push-new-item (w3-normalize-spaces (car-safe content))
99 (cdr-safe (assq 'href args))))
100 (content
101 (w3-grok-html-bookmarks-internal content))))))
102
103 (defun w3-grok-html-bookmarks (chunk)
104 (let (
105 cur-title
106 cur-stack
107 )
108 (w3-grok-html-bookmarks-internal chunk)
109 (reverse (car cur-stack))))
110
111 (defun w3-hotlist-apropos (regexp)
112 "Show hotlist entries matching REGEXP."
113 (interactive "sW3 Hotlist Apropos (regexp): ")
114 (or w3-setup-done (w3-do-setup))
115 (let ((save-buf (get-buffer "Hotlist")) ; avoid killing this
116 (w3-hotlist
117 (apply
118 'nconc
119 (mapcar
120 (function
121 (lambda (entry)
122 (if (or (string-match regexp (car entry))
123 (string-match regexp (car (cdr entry))))
124 (list entry))))
125 w3-hotlist))))
126 (if (not w3-hotlist)
127 (message "No w3-hotlist entries match \"%s\"" regexp)
128 (and save-buf (save-excursion
129 (set-buffer save-buf)
130 (rename-buffer (concat "Hotlist during " regexp))))
131 (unwind-protect
132 (progn
133 (w3-show-hotlist)
134 (rename-buffer (concat "Hotlist \"" regexp "\""))
135 (setq url-current-file (concat "hotlist/" regexp)))
136 (and save-buf (save-excursion
137 (set-buffer save-buf)
138 (rename-buffer "Hotlist")))))))
139
140 (defun w3-hotlist-refresh ()
141 "Reload the default hotlist file into memory"
142 (interactive)
143 (w3-parse-hotlist)
144 (if (fboundp 'w3-add-hotlist-menu) (w3-add-hotlist-menu)))
145
146 (defun w3-delete-from-alist (x alist)
147 ;; Remove X from ALIST, return new alist
148 (if (eq (assoc x alist) (car alist)) (cdr alist)
149 (delq (assoc x alist) alist)))
150
151 (defun w3-hotlist-delete ()
152 "Deletes a document from your hotlist file"
153 (interactive)
154 (save-excursion
155 (if (not w3-hotlist) (message "No hotlist in memory!")
156 (if (not (file-exists-p w3-hotlist-file))
157 (message "Hotlist file %s does not exist." w3-hotlist-file)
158 (let* ((completion-ignore-case t)
159 (title (car (assoc (completing-read "Delete Document: "
160 w3-hotlist nil t)
161 w3-hotlist)))
162 (case-fold-search nil)
163 (buffer (get-buffer-create " *HOTW3*")))
164 (and (string= title "") (error "No document specified."))
165 (set-buffer buffer)
166 (erase-buffer)
167 (insert-file-contents w3-hotlist-file)
168 (goto-char (point-min))
169 (if (re-search-forward (concat "^" (regexp-quote title) "\r*$")
170 nil t)
171 (let ((make-backup-files nil)
172 (version-control nil)
173 (require-final-newline t))
174 (previous-line 1)
175 (beginning-of-line)
176 (delete-region (point) (progn (forward-line 2) (point)))
177 (write-file w3-hotlist-file)
178 (setq w3-hotlist (w3-delete-from-alist title w3-hotlist))
179 (kill-buffer (current-buffer)))
180 (message "%s was not found in %s" title w3-hotlist-file))))))
181 (and (fboundp 'w3-add-hotlist-menu) (funcall 'w3-add-hotlist-menu)))
182
183 (defun w3-hotlist-rename-entry (title)
184 "Rename a hotlist item"
185 (interactive (list (let ((completion-ignore-case t))
186 (completing-read "Rename entry: " w3-hotlist nil t))))
187 (cond ; Do the error handling first
188 ((string= title "") (error "No document specified!"))
189 ((not w3-hotlist) (error "No hotlist in memory!"))
190 ((not (file-exists-p (expand-file-name w3-hotlist-file)))
191 (error "Hotlist file %s does not exist." w3-hotlist-file))
192 ((not (file-readable-p (expand-file-name w3-hotlist-file)))
193 (error "Hotlist file %s exists, but is unreadable." w3-hotlist-file)))
194 (save-excursion
195 (let ((obj (assoc title w3-hotlist))
196 (used (mapcar 'car w3-hotlist))
197 (buff (get-buffer-create " *HOTW3*"))
198 (new nil)
199 )
200 (while (or (null new) (member new used))
201 (setq new (read-string "New name: ")))
202 (set-buffer buff)
203 (erase-buffer)
204 (insert-file-contents (expand-file-name w3-hotlist-file))
205 (goto-char (point-min))
206 (if (re-search-forward (regexp-quote title) nil t)
207 (let ((make-backup-files nil)
208 (version-control nil)
209 (require-final-newline t))
210 (previous-line 1)
211 (beginning-of-line)
212 (delete-region (point) (progn (forward-line 2) (point)))
213 (insert (format "%s %s\n%s\n" (nth 1 obj) (current-time-string)
214 new))
215 (setq w3-hotlist (cons (list new (nth 1 obj))
216 (w3-delete-from-alist title w3-hotlist)))
217 (write-file w3-hotlist-file)
218 (kill-buffer (current-buffer))
219 (if (and w3-running-FSF19 (not (eq 'tty (device-type))))
220 (progn
221 (delete-menu-item '("Go"))
222 (w3-build-FSF19-menu))))
223 (message "%s was not found in %s" title w3-hotlist-file))))
224 (and (fboundp 'w3-add-hotlist-menu) (funcall 'w3-add-hotlist-menu)))
225
226 (defun w3-hotlist-append (fname)
227 "Append a hotlist to the one in memory"
228 (interactive "fAppend hotlist file: ")
229 (let ((x w3-hotlist))
230 (w3-parse-hotlist fname)
231 (setq w3-hotlist (nconc x w3-hotlist))
232 (and (fboundp 'w3-add-hotlist-menu) (funcall 'w3-add-hotlist-menu))))
233
234 (defun w3-parse-hotlist (&optional fname)
235 "Read in the hotlist specified by FNAME"
236 (if (not fname) (setq fname w3-hotlist-file))
237 (setq w3-hotlist nil)
238 (if (not (file-exists-p fname))
239 (message "%s does not exist!" fname)
240 (let* ((old-buffer (current-buffer))
241 (buffer (get-buffer-create " *HOTW3*"))
242 cur-link
243 cur-alias)
244 (set-buffer buffer)
245 (erase-buffer)
246 (insert-file-contents fname)
247 (goto-char (point-min))
248 (while (re-search-forward "^\n" nil t) (replace-match ""))
249 (goto-line 3)
250 (while (not (eobp))
251 (re-search-forward "^[^ ]*" nil t)
252 (setq cur-link (buffer-substring (match-beginning 0) (match-end 0)))
253 (setq cur-alias (buffer-substring (progn
254 (forward-line 1)
255 (beginning-of-line)
256 (point))
257 (progn
258 (end-of-line)
259 (point))))
260 (if (not (equal cur-alias ""))
261 (setq w3-hotlist (cons (list cur-alias cur-link) w3-hotlist))))
262 (kill-buffer buffer)
263 (and (fboundp 'w3-add-hotlist-menu) (funcall 'w3-add-hotlist-menu))
264 (set-buffer old-buffer))))
265
266 ;;;###autoload
267 (defun w3-use-hotlist ()
268 "Possibly go to a link in your W3/Mosaic hotlist.
269 This is part of the emacs World Wide Web browser. It will prompt for
270 one of the items in your 'hotlist'. A hotlist is a list of often
271 visited or interesting items you have found on the World Wide Web."
272 (interactive)
273 (if (not w3-setup-done) (w3-do-setup))
274 (if (not w3-hotlist) (message "No hotlist in memory!")
275 (let* ((completion-ignore-case t)
276 (url (car (cdr (assoc
277 (completing-read "Goto Document: " w3-hotlist nil t)
278 w3-hotlist)))))
279 (if (string= "" url) (error "No document specified!"))
280 (w3-fetch url))))
281
282 (defun w3-hotlist-add-document-at-point (pref-arg)
283 "Add the document pointed to by the hyperlink under point to the hotlist."
284 (interactive "P")
285 (let ((url (w3-view-this-url t)) title)
286 (or url (error "No link under point."))
287 (setq title (get-text-property (point) 'title))
288 (if (and title
289 (marker-buffer (car title))
290 (marker-buffer (cdr title)))
291 (setq title (buffer-substring (car title) (cdr title)))
292 (setq title "None"))
293 (remove-text-properties 1 (length title))
294 (w3-hotlist-add-document pref-arg title url)
295 (and (fboundp 'w3-add-hotlist-menu) (funcall 'w3-add-hotlist-menu))))
296
297 (defun w3-hotlist-add-document (pref-arg &optional the-title the-url)
298 "Add this documents url to the hotlist"
299 (interactive "P")
300 (save-excursion
301 (let* ((buffer (get-buffer-create " *HOTW3*"))
302 (title (or the-title
303 (and pref-arg (read-string "Title: "))
304 (buffer-name)))
305 (make-backup-files nil)
306 (version-control nil)
307 (require-final-newline t)
308 (url (or the-url (url-view-url t))))
309 (if (rassoc (list url) w3-hotlist)
310 (error "That item already in hotlist, use w3-hotlist-rename-entry."))
311 (set-buffer buffer)
312 (erase-buffer)
313 (setq w3-hotlist (cons (list title url) w3-hotlist)
314 url (url-unhex-string url))
315 (if (not (file-exists-p w3-hotlist-file))
316 (progn
317 (message "Creating hotlist file %s" w3-hotlist-file)
318 (insert "ncsa-xmosaic-hotlist-format-1\nDefault\n\n")
319 (backward-char 1))
320 (progn
321 (insert-file-contents w3-hotlist-file)
322 (goto-char (point-max))
323 (backward-char 1)))
324 (insert "\n" (url-hexify-string url) " " (current-time-string)
325 "\n" title)
326 (write-file w3-hotlist-file)
327 (kill-buffer (current-buffer))))
328 (and (fboundp 'w3-add-hotlist-menu) (funcall 'w3-add-hotlist-menu)))
329
330 (provide 'w3-hot)