;;; shr.el --- Simple HTML Renderer
-;; Copyright (C) 2010-2012 Free Software Foundation, Inc.
+;; Copyright (C) 2010-2013 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: html
"Images that have URLs matching this regexp will be blocked."
:version "24.1"
:group 'shr
- :type 'regexp)
+ :type '(choice (const nil) regexp))
(defcustom shr-table-horizontal-line ?\s
"Character used to draw horizontal table lines."
(defvar shr-stylesheet nil)
(defvar shr-base nil)
(defvar shr-ignore-cache nil)
+(defvar shr-external-rendering-functions nil)
+(defvar shr-final-table-render nil)
(defvar shr-map
(let ((map (make-sparse-keymap)))
;; Public functions and commands.
-(defun shr-visit-file (file)
- "Parse FILE as an HTML document, and render it in a new buffer."
- (interactive "fHTML file name: ")
+(defun shr-render-buffer (buffer)
+ "Display the HTML rendering of the current buffer."
+ (interactive (list (current-buffer)))
(pop-to-buffer "*html*")
(erase-buffer)
(shr-insert-document
- (with-temp-buffer
- (insert-file-contents file)
+ (with-current-buffer buffer
(libxml-parse-html-region (point-min) (point-max))))
(goto-char (point-min)))
+(defun shr-visit-file (file)
+ "Parse FILE as an HTML document, and render it in a new buffer."
+ (interactive "fHTML file name: ")
+ (with-temp-buffer
+ (insert-file-contents file)
+ (shr-render-buffer (current-buffer))))
+
;;;###autoload
(defun shr-insert-document (dom)
"Render the parsed document DOM into the current buffer.
(nreverse result)))
(defun shr-descend (dom)
- (let ((function (intern (concat "shr-tag-" (symbol-name (car dom))) obarray))
+ (let ((function
+ (or
+ ;; Allow other packages to override (or provide) rendering
+ ;; of elements.
+ (cdr (assq (car dom) shr-external-rendering-functions))
+ (intern (concat "shr-tag-" (symbol-name (car dom))) obarray)))
(style (cdr (assq :style (cdr dom))))
(shr-stylesheet shr-stylesheet)
(start (point)))
((eq shr-folding-mode 'none)
(insert text))
(t
- (when (and (string-match "\\`[ \t\n ]" text)
+ (when (and (string-match "\\`[ \t\n ]" text)
(not (bolp))
(not (eq (char-after (1- (point))) ? )))
(insert " "))
- (dolist (elem (split-string text "[ \f\t\n\r\v ]+" t))
+ (dolist (elem (split-string text "[ \f\t\n\r\v ]+" t))
(when (and (bolp)
(> shr-indentation 0))
(shr-indent))
(shr-indent))
(end-of-line))
(insert " ")))
- (unless (string-match "[ \t\n ]\\'" text)
+ (unless (string-match "[ \t\r\n ]\\'" text)
(delete-char -1)))))
(defun shr-find-fill-point ()
(not failed)))
(defun shr-expand-url (url)
- (cond
- ;; Absolute URL.
- ((or (not url)
- (string-match "\\`[a-z]*:" url)
- (not shr-base))
- url)
- ((and (not (string-match "/\\'" shr-base))
- (not (string-match "\\`/" url)))
- (concat shr-base "/" url))
- (t
- (concat shr-base url))))
+ (if (or (not url)
+ (string-match "\\`[a-z]*:" url)
+ (not shr-base))
+ ;; Absolute URL.
+ url
+ (let ((base shr-base))
+ ;; Chop off query string.
+ (when (string-match "\\`\\([^?]+\\)[?]" base)
+ (setq base (match-string 1 base)))
+ ;; Chop off the bit after the last slash.
+ (when (string-match "\\`\\(.*\\)[/][^/]+" base)
+ (setq base (match-string 1 base)))
+ (cond
+ ((and (string-match "\\`//" url)
+ (string-match "\\`[a-z]*:" base))
+ (concat (match-string 0 base) url))
+ ((and (not (string-match "/\\'" base))
+ (not (string-match "\\`/" url)))
+ (concat base "/" url))
+ ((and (string-match "\\`/" url)
+ (string-match "\\(\\`[^:]*://[^/]+\\)/" base))
+ (concat (match-string 1 base) url))
+ (t
+ (concat base url))))))
(defun shr-ensure-newline ()
(unless (zerop (current-column))
(dolist (type types)
(shr-add-font (or shr-start (point)) (point) type))))
+(defun shr-make-overlay (beg end &optional buffer front-advance rear-advance)
+ (let ((overlay (make-overlay beg end buffer front-advance rear-advance)))
+ (overlay-put overlay 'evaporate t)
+ overlay))
+
;; Add an overlay in the region, but avoid putting the font properties
;; on blank text at the start of the line, and the newline at the end,
;; to avoid ugliness.
(while (< (point) end)
(when (bolp)
(skip-chars-forward " "))
- (let ((overlay (make-overlay (point) (min (line-end-position) end))))
+ (let ((overlay (shr-make-overlay (point) (min (line-end-position) end))))
(overlay-put overlay 'face type))
(if (< (line-end-position) end)
(forward-line 1)
(put-text-property start (point) type value))))))))))
(kill-buffer image-buffer)))
+(defun shr-image-from-data (data)
+ "Return an image from the data: URI content DATA."
+ (when (string-match
+ "\\(\\([^/;,]+\\(/[^;,]+\\)?\\)\\(;[^;,]+\\)*\\)?,\\(.*\\)"
+ data)
+ (let ((param (match-string 4 data))
+ (payload (url-unhex-string (match-string 5 data))))
+ (when (string-match "^.*\\(;[ \t]*base64\\)$" param)
+ (setq payload (base64-decode-string payload)))
+ payload)))
+
(defun shr-put-image (data alt &optional flags)
"Put image DATA with a string ALT. Return image."
(if (display-graphic-p)
(overlay-put overlay 'face 'default)))
(insert-image image (or alt "*")))
(put-text-property start (point) 'image-size size)
- (when (image-animated-p image)
+ (when (cond ((fboundp 'image-multi-frame-p)
+ ;; Only animate multi-frame things that specify a
+ ;; delay; eg animated gifs as opposed to
+ ;; multi-page tiffs. FIXME?
+ (cdr (image-multi-frame-p image)))
+ ((fboundp 'image-animated-p)
+ (image-animated-p image)))
(image-animate image nil 60)))
image)
(insert alt)))
(when (and (< (setq column (current-column)) width)
(< (setq column (shr-previous-newline-padding-width column))
width))
- (let ((overlay (make-overlay (point) (1+ (point)))))
+ (let ((overlay (shr-make-overlay (point) (1+ (point)))))
(overlay-put overlay 'before-string
(concat
(mapconcat
(defun shr-tag-comment (cont)
)
+(defun shr-tag-svg (cont)
+ )
+
(defun shr-tag-sup (cont)
(let ((start (point)))
(shr-generic cont)
(shr-fontize-cont cont 'italic))
(defun shr-tag-em (cont)
- (shr-fontize-cont cont 'bold))
+ (shr-fontize-cont cont 'italic))
(defun shr-tag-strong (cont)
(shr-fontize-cont cont 'bold))
plist)))
(defun shr-tag-base (cont)
- (setq shr-base (cdr (assq :href cont))))
+ (setq shr-base (cdr (assq :href cont)))
+ (shr-generic cont))
(defun shr-tag-a (cont)
(let ((url (cdr (assq :href cont)))
(start (point))
shr-start)
(shr-generic cont)
- (shr-urlify (or shr-start start) (shr-expand-url url) title)))
+ (when url
+ (shr-urlify (or shr-start start) (shr-expand-url url) title))))
(defun shr-tag-object (cont)
(let ((start (point))
(member (cdr (assq :width cont)) '("0" "1")))
;; Ignore zero-sized or single-pixel images.
)
+ ((and (not shr-inhibit-images)
+ (string-match "\\`data:" url))
+ (let ((image (shr-image-from-data (substring url (match-end 0)))))
+ (if image
+ (funcall shr-put-image-function image alt)
+ (insert alt))))
((and (not shr-inhibit-images)
(string-match "\\`cid:" url))
(let ((url (substring url (match-end 0)))
(shr-indent))
(shr-generic cont))
+(defun shr-tag-span (cont)
+ (let ((title (cdr (assq :title cont))))
+ (shr-generic cont)
+ (when title
+ (when shr-start
+ (let ((overlay (shr-make-overlay shr-start (point))))
+ (overlay-put overlay 'help-echo title))))))
+
(defun shr-tag-h1 (cont)
(shr-heading cont 'bold 'underline))
(frame-width))
(setq truncate-lines t))
;; Then render the table again with these new "hard" widths.
- (shr-insert-table (shr-make-table cont sketch-widths t) sketch-widths))
+ (let ((shr-final-table-render t))
+ (shr-insert-table (shr-make-table cont sketch-widths t) sketch-widths)))
;; Finally, insert all the images after the table. The Emacs buffer
;; model isn't strong enough to allow us to put the images actually
;; into the tables.
(end-of-line)
(insert line shr-table-vertical-line)
(dolist (overlay overlay-line)
- (let ((o (make-overlay (- (point) (nth 0 overlay) 1)
- (- (point) (nth 1 overlay) 1)))
+ (let ((o (shr-make-overlay (- (point) (nth 0 overlay) 1)
+ (- (point) (nth 1 overlay) 1)))
(properties (nth 2 overlay)))
(while properties
(overlay-put o (pop properties) (pop properties)))))
(let ((end (length (car cache))))
(dolist (overlay (cadr cache))
(let ((new-overlay
- (make-overlay (1+ (- end (nth 0 overlay)))
- (1+ (- end (nth 1 overlay)))))
+ (shr-make-overlay (1+ (- end (nth 0 overlay)))
+ (1+ (- end (nth 1 overlay)))))
(properties (nth 2 overlay)))
(while properties
(overlay-put new-overlay
(provide 'shr)
;; Local Variables:
-;; coding: iso-8859-1
+;; coding: utf-8
;; End:
;;; shr.el ends here
projects / gnus / blobdiff