(defgroup shr nil
"Simple HTML Renderer"
+ :version "24.1"
:group 'mail)
(defcustom shr-max-image-proportion 0.9
;; 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: ")
(pop-to-buffer "*html*")
(erase-buffer)
;;;###autoload
(defun shr-insert-document (dom)
+ "Render the parsed document DOM into the current buffer.
+DOM should be a parse tree as generated by
+`libxml-parse-html-region' or similar."
(setq shr-content-cache nil)
- (let ((shr-state nil)
+ (let ((start (point))
+ (shr-state nil)
(shr-start nil)
(shr-base nil)
(shr-width (or shr-width (window-width))))
- (shr-descend (shr-transform-dom dom))))
+ (shr-descend (shr-transform-dom dom))
+ (shr-remove-trailing-whitespace start (point))))
+
+(defun shr-remove-trailing-whitespace (start end)
+ (let ((width (window-width)))
+ (save-restriction
+ (narrow-to-region start end)
+ (goto-char start)
+ (while (not (eobp))
+ (end-of-line)
+ (when (> (shr-previous-newline-padding-width (current-column)) width)
+ (dolist (overlay (overlays-at (point)))
+ (when (overlay-get overlay 'before-string)
+ (overlay-put overlay 'before-string nil))))
+ (forward-line 1)))))
(defun shr-copy-url ()
"Copy the URL under point to the kill ring.
(when (re-search-forward ".utm_.*" nil t)
(replace-match "" t t))
(message "Copied %s" (buffer-string))
- (copy-region-as-kill (point-min) (point-max)))))))
+ (copy-region-as-kill (point-min) (point-max)))))
+ nil t))
;; Copy the URL to the kill ring.
(t
(with-temp-buffer
(message "Inserting %s..." url)
(url-retrieve url 'shr-image-fetched
(list (current-buffer) (1- (point)) (point-marker))
- t))))
+ t t))))
(defun shr-zoom-image ()
"Toggle the image size.
(if (not url)
(message "No image under point")
;; Delete the old picture.
- (beginning-of-line)
- (while (get-text-property (point) 'display)
- (forward-line -1))
- (forward-line 1)
+ (while (get-text-property (point) 'image-url)
+ (forward-char -1))
+ (forward-char 1)
(let ((start (point)))
- (while (get-text-property (point) 'display)
- (forward-line 1))
- (forward-line -1)
- (delete-region start (point))
- (forward-char 1)
- (put-text-property start (point) 'display nil))
+ (while (get-text-property (point) 'image-url)
+ (forward-char 1))
+ (forward-char -1)
+ (put-text-property start (point) 'display nil)
+ (when (> (- (point) start) 2)
+ (delete-region start (1- (point)))))
(message "Inserting %s..." url)
(url-retrieve url 'shr-image-fetched
(list (current-buffer) (1- (point)) (point-marker)
(defun shr-insert (text)
(when (and (eq shr-state 'image)
+ (not (bolp))
(not (string-match "\\`[ \t\n]+\\'" text)))
(insert "\n")
(setq shr-state nil))
((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))
+ (dolist (elem (split-string text "[ \f\t\n\r\v ]+" t))
(when (and (bolp)
(> shr-indentation 0))
(shr-indent))
(unless shr-start
(setq shr-start (point)))
(insert elem)
+ (setq shr-state nil)
(let (found)
(while (and (> (current-column) shr-width)
(progn
(delete-char -1))
(insert "\n")
(unless found
- (put-text-property (1- (point)) (point) 'shr-break t)
;; No space is needed at the beginning of a line.
(when (eq (following-char) ? )
(delete-char 1)))
(shr-indent))
(end-of-line))
(insert " ")))
- (unless (string-match "[ \t\n]\\'" text)
+ (unless (string-match "[ \t\n ]\\'" text)
(delete-char -1)))))
(defun shr-find-fill-point ()
(if (not url)
(message "No link under point")
(url-retrieve (shr-encode-url url)
- 'shr-store-contents (list url directory)))))
+ 'shr-store-contents (list url directory)
+ nil t))))
(defun shr-store-contents (status url directory)
(unless (plist-get status :error)
directory)))))
(defun shr-image-fetched (status buffer start end &optional flags)
- (when (and (buffer-name buffer)
- (not (plist-get status :error)))
- (url-store-in-cache (current-buffer))
- (when (or (search-forward "\n\n" nil t)
- (search-forward "\r\n\r\n" nil t))
- (let ((data (buffer-substring (point) (point-max))))
- (with-current-buffer buffer
- (save-excursion
- (let ((alt (buffer-substring start end))
- (inhibit-read-only t))
- (delete-region start end)
- (goto-char start)
- (funcall shr-put-image-function data alt flags)))))))
- (kill-buffer (current-buffer)))
+ (let ((image-buffer (current-buffer)))
+ (when (and (buffer-name buffer)
+ (not (plist-get status :error)))
+ (url-store-in-cache image-buffer)
+ (when (or (search-forward "\n\n" nil t)
+ (search-forward "\r\n\r\n" nil t))
+ (let ((data (buffer-substring (point) (point-max))))
+ (with-current-buffer buffer
+ (save-excursion
+ (let ((alt (buffer-substring start end))
+ (properties (text-properties-at start))
+ (inhibit-read-only t))
+ (delete-region start end)
+ (goto-char start)
+ (funcall shr-put-image-function data alt flags)
+ (while properties
+ (let ((type (pop properties))
+ (value (pop properties)))
+ (unless (memq type '(display image-size))
+ (put-text-property start (point) type value))))))))))
+ (kill-buffer image-buffer)))
(defun shr-put-image (data alt &optional flags)
"Put image DATA with a string ALT. Return image."
(> (car (image-size image t)) 400))
(insert "\n"))
(if (eq size 'original)
- (insert-sliced-image image (or alt "*") nil 20 1)
+ (let ((overlays (overlays-at (point))))
+ (insert-sliced-image image (or alt "*") nil 20 1)
+ (dolist (overlay overlays)
+ (overlay-put overlay 'face 'default)))
(insert-image image (or alt "*")))
(put-text-property start (point) 'image-size size)
(when (image-animated-p image)
(delete-region (point) end))))
(url-retrieve url 'shr-image-fetched
(list (current-buffer) start end)
- t)))))
+ t t)))))
(defun shr-heading (cont &rest types)
(shr-ensure-paragraph)
(forward-line 1)
(setq end (point))
(narrow-to-region start end)
- (let ((width (shr-natural-width))
+ (let ((width (shr-buffer-width))
column)
(goto-char (point-min))
(while (not (eobp))
(let ((file (url-cache-create-filename (shr-encode-url url))))
(when (file-exists-p file)
(delete-file file))))
- (funcall
- (if (fboundp 'url-queue-retrieve)
- 'url-queue-retrieve
- 'url-retrieve)
+ (url-queue-retrieve
(shr-encode-url url) 'shr-image-fetched
(list (current-buffer) start (set-marker (make-marker) (1- (point))))
- t)))
+ t t)))
(when (zerop shr-table-depth) ;; We are not in a table.
(put-text-property start (point) 'keymap shr-map)
(put-text-property start (point) 'shr-alt alt)
(shr-generic cont)))
(defun shr-tag-br (cont)
- (unless (bobp)
+ (unless (bolp)
(insert "\n")
(shr-indent))
(shr-generic cont))
;; be smaller (if there's little text) or bigger (if there's
;; unbreakable text).
(sketch (shr-make-table cont suggested-widths))
- (sketch-widths (shr-table-widths sketch suggested-widths)))
+ ;; Compute the "natural" width by setting each column to 500
+ ;; characters and see how wide they really render.
+ (natural (shr-make-table cont (make-vector (length columns) 500)))
+ (sketch-widths (shr-table-widths sketch natural suggested-widths)))
;; This probably won't work very well.
(when (> (+ (loop for width across sketch-widths
summing (1+ width))
shr-table-corner))
(insert "\n"))
-(defun shr-table-widths (table suggested-widths)
+(defun shr-table-widths (table natural-table suggested-widths)
(let* ((length (length suggested-widths))
(widths (make-vector length 0))
(natural-widths (make-vector length 0)))
(dolist (row table)
(let ((i 0))
(dolist (column row)
- (aset widths i (max (aref widths i)
- (car column)))
- (aset natural-widths i (max (aref natural-widths i)
- (cadr column)))
+ (aset widths i (max (aref widths i) column))
+ (setq i (1+ i)))))
+ (dolist (row natural-table)
+ (let ((i 0))
+ (dolist (column row)
+ (aset natural-widths i (max (aref natural-widths i) column))
(setq i (1+ i)))))
(let ((extra (- (apply '+ (append suggested-widths nil))
(apply '+ (append widths nil))))
(expanded-columns 0))
+ ;; We have extra, unused space, so divide this space amongst the
+ ;; columns.
(when (> extra 0)
+ ;; If the natural width is wider than the rendered width, we
+ ;; want to allow the column to expand.
(dotimes (i length)
- ;; If the natural width is wider than the rendered width, we
- ;; want to allow the column to expand.
(when (> (aref natural-widths i) (aref widths i))
(setq expanded-columns (1+ expanded-columns))))
(dotimes (i length)
(when (> (aref natural-widths i) (aref widths i))
(aset widths i (min
- (1+ (aref natural-widths i))
+ (aref natural-widths i)
(+ (/ extra expanded-columns)
(aref widths i))))))))
widths))
(let ((shr-width width)
(shr-indentation 0))
(shr-descend (cons 'td cont)))
+ ;; Delete padding at the bottom of the TDs.
(delete-region
(point)
- (+ (point)
- (skip-chars-backward " \t\n")))
+ (progn
+ (skip-chars-backward " \t\n")
+ (end-of-line)
+ (point)))
(push (list (cons width cont) (buffer-string)
(shr-overlays-in-region (point-min) (point-max)))
shr-content-cache)))
(split-string (buffer-string) "\n")
(shr-collect-overlays)
(car actual-colors))
- (list max
- (shr-natural-width)))))))
+ max)))))
-(defun shr-natural-width ()
+(defun shr-buffer-width ()
(goto-char (point-min))
- (let ((current 0)
- (max 0))
+ (let ((max 0))
(while (not (eobp))
(end-of-line)
- (setq current (+ current (current-column)))
- (unless (get-text-property (point) 'shr-break)
- (setq max (max max current)
- current 0))
+ (setq max (max max (current-column)))
(forward-line 1))
max))
(when (memq (car column) '(td th))
(let ((width (cdr (assq :width (cdr column)))))
(when (and width
- (string-match "\\([0-9]+\\)%" width))
- (aset columns i
- (/ (string-to-number (match-string 1 width))
- 100.0))))
+ (string-match "\\([0-9]+\\)%" width)
+ (not (zerop (setq width (string-to-number
+ (match-string 1 width))))))
+ (aset columns i (/ width 100.0))))
(setq i (1+ i)))))))
columns))
projects / gnus / blobdiff