(eval-when-compile (require 'cl))
(eval-when-compile (require 'mm-decode))
+
+(require 'gnus-art)
(require 'mm-url)
+(require 'url)
(defcustom gnus-html-cache-directory (nnheader-concat gnus-directory "html-cache/")
"Where Gnus will cache images it downloads from the web."
(define-key map "i" 'gnus-html-insert-image)
map))
+(defvar gnus-html-displayed-image-map
+ (let ((map (make-sparse-keymap)))
+ (define-key map "a" 'gnus-html-show-alt-text)
+ (define-key map "i" 'gnus-html-browse-image)
+ (define-key map "\r" 'gnus-html-browse-url)
+ (define-key map "u" 'gnus-article-copy-string)
+ (define-key map [tab] 'widget-forward)
+ map))
+
;;;###autoload
-(defun gnus-article-html (handle)
+(defun gnus-article-html (&optional handle)
(let ((article-buffer (current-buffer)))
+ (unless handle
+ (setq handle (mm-dissect-buffer t)))
(save-restriction
(narrow-to-region (point) (point))
(save-excursion
"-I" "UTF-8"
"-O" "UTF-8"
"-o" "ext_halfdump=1"
+ "-o" "display_ins_del=2"
"-o" "pre_conv=1"
"-t" (format "%s" tab-width)
"-cols" (format "%s" gnus-html-frame-width)
(defvar gnus-article-mouse-face)
-(defun gnus-html-wash-tags ()
+(defun gnus-html-pre-wash ()
+ (goto-char (point-min))
+ (while (re-search-forward " *<pre_int> *</pre_int> *\n" nil t)
+ (replace-match "" t t))
+ (goto-char (point-min))
+ (while (re-search-forward "<a name[^\n>]+>" nil t)
+ (replace-match "" t t)))
+
+(defun gnus-html-wash-images ()
(let (tag parameters string start end images url)
- (mm-url-decode-entities)
(goto-char (point-min))
- (while (re-search-forward "<pre_int> *</pre_int>\n" nil t)
- (replace-match "" t t))
+ ;; Search for all the images first.
+ (while (re-search-forward "<img_alt \\([^>]*\\)>" nil t)
+ (setq parameters (match-string 1)
+ start (match-beginning 0))
+ (delete-region start (point))
+ (when (search-forward "</img_alt>" (line-end-position) t)
+ (delete-region (match-beginning 0) (match-end 0)))
+ (setq end (point))
+ (when (string-match "src=\"\\([^\"]+\\)" parameters)
+ (setq url (match-string 1 parameters))
+ (gnus-message 8 "gnus-html-wash-tags: fetching image URL %s" url)
+ (if (string-match "^cid:\\(.*\\)" url)
+ ;; URLs with cid: have their content stashed in other
+ ;; parts of the MIME structure, so just insert them
+ ;; immediately.
+ (let ((handle (mm-get-content-id
+ (setq url (match-string 1 url))))
+ image)
+ (when handle
+ (mm-with-part handle
+ (setq image (gnus-create-image (buffer-string)
+ nil t))))
+ (when image
+ (let ((string (buffer-substring start end)))
+ (delete-region start end)
+ (gnus-put-image image (gnus-string-or string "*") 'cid)
+ (gnus-add-image 'cid image))))
+ ;; Normal, external URL.
+ (if (gnus-html-image-url-blocked-p
+ url
+ (if (buffer-live-p gnus-summary-buffer)
+ (with-current-buffer gnus-summary-buffer
+ gnus-blocked-images)
+ gnus-blocked-images))
+ (progn
+ (widget-convert-button
+ 'link start end
+ :action 'gnus-html-insert-image
+ :help-echo url
+ :keymap gnus-html-image-map
+ :button-keymap gnus-html-image-map)
+ (let ((overlay (gnus-make-overlay start end))
+ (spec (list url
+ (set-marker (make-marker) start)
+ (set-marker (make-marker) end))))
+ (gnus-overlay-put overlay 'local-map gnus-html-image-map)
+ (gnus-overlay-put overlay 'gnus-image spec)
+ (gnus-put-text-property
+ start end
+ 'gnus-image spec)))
+ (let ((file (gnus-html-image-id url))
+ width height alt-text)
+ (when (string-match "height=\"?\\([0-9]+\\)" parameters)
+ (setq height (string-to-number (match-string 1 parameters))))
+ (when (string-match "width=\"?\\([0-9]+\\)" parameters)
+ (setq width (string-to-number (match-string 1 parameters))))
+ (when (string-match "\\(alt\\|title\\)=\"\\([^\"]+\\)"
+ parameters)
+ (setq alt-text (match-string 2 parameters)))
+ ;; Don't fetch images that are really small. They're
+ ;; probably tracking pictures.
+ (when (and (or (null height)
+ (> height 4))
+ (or (null width)
+ (> width 4)))
+ (if (file-exists-p file)
+ ;; It's already cached, so just insert it.
+ (let ((string (buffer-substring start end)))
+ ;; Delete the IMG text.
+ (delete-region start end)
+ (gnus-html-put-image file (point) string url alt-text))
+ ;; We don't have it, so schedule it for fetching
+ ;; asynchronously.
+ (push (list url
+ (set-marker (make-marker) start)
+ (point-marker))
+ images))))))))
+ (when images
+ (gnus-html-schedule-image-fetching (current-buffer) (nreverse images)))))
+
+(defun gnus-html-wash-tags ()
+ (let (tag parameters string start end images url)
+ (gnus-html-pre-wash)
+ (gnus-html-wash-images)
+
(goto-char (point-min))
+ ;; Then do the other tags.
(while (re-search-forward "<\\([^ />]+\\)\\([^>]*\\)>" nil t)
(setq tag (match-string 1)
parameters (match-string 2)
(setq end (point))
(cond
;; Fetch and insert a picture.
- ((equal tag "img_alt")
- (when (string-match "src=\"\\([^\"]+\\)" parameters)
- (setq url (match-string 1 parameters))
- (gnus-message 8 "gnus-html-wash-tags: fetching image URL %s" url)
- (if (string-match "^cid:\\(.*\\)" url)
- ;; URLs with cid: have their content stashed in other
- ;; parts of the MIME structure, so just insert them
- ;; immediately.
- (let ((handle (mm-get-content-id
- (setq url (match-string 1 url))))
- image)
- (when handle
- (mm-with-part handle
- (setq image (gnus-create-image (buffer-string)
- nil t))))
- (when image
- (let ((string (buffer-substring start end)))
- (delete-region start end)
- (gnus-put-image image (gnus-string-or string "*")))))
- ;; Normal, external URL.
- (if (gnus-html-image-url-blocked-p
- url
- (if (buffer-live-p gnus-summary-buffer)
- (with-current-buffer gnus-summary-buffer
- gnus-blocked-images)
- gnus-blocked-images))
- (progn
- (widget-convert-button
- 'link start end
- :action 'gnus-html-insert-image
- :help-echo url
- :keymap gnus-html-image-map
- :button-keymap gnus-html-image-map)
- (gnus-put-text-property
- start end
- 'gnus-image (list url
- (set-marker (make-marker) start)
- (set-marker (make-marker) end))))
- (let ((file (gnus-html-image-id url))
- width height)
- (when (string-match "height=\"?\\([0-9]+\\)" parameters)
- (setq height (string-to-number (match-string 1 parameters))))
- (when (string-match "width=\"?\\([0-9]+\\)" parameters)
- (setq width (string-to-number (match-string 1 parameters))))
- ;; Don't fetch images that are really small. They're
- ;; probably tracking pictures.
- (when (and (or (null height)
- (> height 4))
- (or (null width)
- (> width 4)))
- (if (file-exists-p file)
- ;; It's already cached, so just insert it.
- (let ((string (buffer-substring start end)))
- ;; Delete the ALT text.
- (delete-region start end)
- (gnus-html-put-image file (point) string))
- ;; We don't have it, so schedule it for fetching
- ;; asynchronously.
- (push (list url
- (set-marker (make-marker) start)
- (point-marker))
- images))))))))
+ ((equal tag "img_alt"))
;; Add a link.
((or (equal tag "a")
(equal tag "A"))
;; should be deleted.
((equal tag "IMG_ALT")
(delete-region start end))
+ ;; w3m does not normalize the case
+ ((or (equal tag "b")
+ (equal tag "B"))
+ (gnus-overlay-put (gnus-make-overlay start end) 'face 'gnus-emphasis-bold))
+ ((or (equal tag "u")
+ (equal tag "U"))
+ (gnus-overlay-put (gnus-make-overlay start end) 'face 'gnus-emphasis-underline))
+ ((or (equal tag "i")
+ (equal tag "I"))
+ (gnus-overlay-put (gnus-make-overlay start end) 'face 'gnus-emphasis-italic))
+ ((or (equal tag "s")
+ (equal tag "S"))
+ (gnus-overlay-put (gnus-make-overlay start end) 'face 'gnus-emphasis-strikethru))
+ ((or (equal tag "ins")
+ (equal tag "INS"))
+ (gnus-overlay-put (gnus-make-overlay start end) 'face 'gnus-emphasis-underline))
+ ;; Handle different UL types
+ ((equal tag "_SYMBOL")
+ (when (string-match "TYPE=\\(.+\\)" parameters)
+ (let ((type (string-to-number (match-string 1 parameters))))
+ (delete-region start end)
+ (cond ((= type 33) (insert " "))
+ ((= type 34) (insert " "))
+ ((= type 35) (insert " "))
+ ((= type 36) (insert " "))
+ ((= type 37) (insert " "))
+ ((= type 38) (insert " "))
+ ((= type 39) (insert " "))
+ ((= type 40) (insert " "))
+ ((= type 42) (insert " "))
+ ((= type 43) (insert " "))
+ (t (insert " "))))))
;; Whatever. Just ignore the tag.
(t
))
(goto-char (point-min))
;; The output from -halfdump isn't totally regular, so strip
;; off any </pre_int>s that were left over.
- (while (re-search-forward "</pre_int>" nil t)
+ (while (re-search-forward "</pre_int>\\|</internal>" nil t)
(replace-match "" t t))
- (when images
- (gnus-html-schedule-image-fetching (current-buffer) (nreverse images)))))
+ (mm-url-decode-entities)))
(defun gnus-html-insert-image ()
"Fetch and insert the image under point."
(gnus-html-schedule-image-fetching
(current-buffer) (list (get-text-property (point) 'gnus-image))))
+(defun gnus-html-show-alt-text ()
+ "Show the ALT text of the image under point."
+ (interactive)
+ (message "%s" (get-text-property (point) 'gnus-alt-text)))
+
+(defun gnus-html-browse-image ()
+ "Browse the image under point."
+ (interactive)
+ (browse-url (get-text-property (point) 'gnus-image)))
+
+(defun gnus-html-browse-url ()
+ "Browse the image under point."
+ (interactive)
+ (let ((url (get-text-property (point) 'gnus-string)))
+ (if (not url)
+ (message "No URL at point")
+ (browse-url url))))
+
(defun gnus-html-schedule-image-fetching (buffer images)
(gnus-message 8 "gnus-html-schedule-image-fetching: buffer %s, images %s"
buffer images)
- (let* ((url (caar images))
- (process (start-process
- "images" nil "curl"
- "-s" "--create-dirs"
- "--location"
- "--max-time" "60"
- "-o" (gnus-html-image-id url)
- url)))
- (process-kill-without-query process)
- (set-process-sentinel process 'gnus-html-curl-sentinel)
- (gnus-set-process-plist process (list 'images images
- 'buffer buffer))))
+ (dolist (image images)
+ (ignore-errors
+ (url-retrieve (car image)
+ 'gnus-html-image-fetched
+ (list buffer image)))))
(defun gnus-html-image-id (url)
(expand-file-name (sha1 url) gnus-html-cache-directory))
-(defun gnus-html-curl-sentinel (process event)
- (when (string-match "finished" event)
- (let* ((images (gnus-process-get process 'images))
- (buffer (gnus-process-get process 'buffer))
- (spec (pop images))
- (file (gnus-html-image-id (car spec))))
- (when (and (buffer-live-p buffer)
- ;; If the position of the marker is 1, then that
- ;; means that the text it was in has been deleted;
- ;; i.e., that the user has selected a different
- ;; article before the image arrived.
- (not (= (marker-position (cadr spec)) (point-min))))
- (with-current-buffer buffer
- (let ((inhibit-read-only t)
- (string (buffer-substring (cadr spec) (caddr spec))))
- (delete-region (cadr spec) (caddr spec))
- (gnus-html-put-image file (cadr spec) string))))
- (when images
- (gnus-html-schedule-image-fetching buffer images)))))
-
-(defun gnus-html-put-image (file point string)
+(defun gnus-html-image-fetched (status buffer image)
+ (let ((file (gnus-html-image-id (car image))))
+ ;; Search the start of the image data
+ (search-forward "\n\n")
+ ;; Write region (image data) silently
+ (write-region (point) (point-max) file nil 1)
+ (kill-buffer)
+ (when (and (buffer-live-p buffer)
+ ;; If the `image' has no marker, do not replace anything
+ (cadr image)
+ ;; If the position of the marker is 1, then that
+ ;; means that the text it was in has been deleted;
+ ;; i.e., that the user has selected a different
+ ;; article before the image arrived.
+ (not (= (marker-position (cadr image)) (point-min))))
+ (with-current-buffer buffer
+ (let ((inhibit-read-only t)
+ (string (buffer-substring (cadr image) (caddr image))))
+ (delete-region (cadr image) (caddr image))
+ (gnus-html-put-image file (cadr image) (car image) string))))))
+
+(defun gnus-html-put-image (file point string &optional url alt-text)
(when (gnus-graphic-display-p)
(let* ((image (ignore-errors
(gnus-create-image file)))
'gif)
(= (car size) 30)
(= (cdr size) 30))))
- (progn
+ (let ((start (point)))
(setq image (gnus-html-rescale-image image file size))
(gnus-put-image image
(gnus-string-or string "*")
'external)
+ (let ((overlay (gnus-make-overlay start (point))))
+ (gnus-overlay-put overlay 'local-map
+ gnus-html-displayed-image-map)
+ (gnus-put-text-property start (point) 'gnus-alt-text alt-text)
+ (when url
+ (gnus-put-text-property start (point) 'gnus-image url)))
(gnus-add-image 'external image)
t)
(insert string)
(when (fboundp 'find-image)
- (gnus-put-image (find-image
- '((:type xpm :file "lock-broken.xpm")))
- (gnus-string-or string "*")))
+ (setq image (find-image '((:type xpm :file "lock-broken.xpm"))))
+ (gnus-put-image image
+ (gnus-string-or string "*")
+ 'internal)
+ (gnus-add-image 'internal image))
nil)))))
(defun gnus-html-rescale-image (image file size)
(delete-file (nth 2 file)))))))
(defun gnus-html-image-url-blocked-p (url blocked-images)
-"Find out if URL is blocked by BLOCKED-IMAGES."
+ "Find out if URL is blocked by BLOCKED-IMAGES."
(let ((ret (and blocked-images
(string-match blocked-images url))))
(if ret
url blocked-images))
ret))
+(defun gnus-html-show-images ()
+ "Show any images that are in the HTML-rendered article buffer.
+This only works if the article in question is HTML."
+ (interactive)
+ (gnus-with-article-buffer
+ (let ((overlays (overlays-in (point-min) (point-max)))
+ overlay images)
+ (while (setq overlay (pop overlays))
+ (when (overlay-get overlay 'gnus-image)
+ (push (overlay-get overlay 'gnus-image) images)))
+ (if (not images)
+ (message "No images to show")
+ (gnus-html-schedule-image-fetching (current-buffer) images)))))
+
;;;###autoload
(defun gnus-html-prefetch-images (summary)
- (let (blocked-images urls)
- (when (buffer-live-p summary)
- (with-current-buffer summary
- (setq blocked-images gnus-blocked-images))
+ (when (buffer-live-p summary)
+ (let ((blocked-images (with-current-buffer summary
+ gnus-blocked-images)))
(save-match-data
(while (re-search-forward "<img.*src=[\"']\\([^\"']+\\)" nil t)
(let ((url (match-string 1)))
(unless (gnus-html-image-url-blocked-p url blocked-images)
(unless (file-exists-p (gnus-html-image-id url))
- (push url urls)
- (push (gnus-html-image-id url) urls)
- (push "-o" urls)))))
- (let ((process
- (apply 'start-process
- "images" nil "curl"
- "-s" "--create-dirs"
- "--location"
- "--max-time" "60"
- urls)))
- (process-kill-without-query process))))))
+ (ignore-errors
+ (url-retrieve (mm-url-decode-entities-string url)
+ 'gnus-html-image-fetched
+ (list nil (list url))))))))))))
(provide 'gnus-html)
projects / gnus / blobdiff