mm-view.el 8.44 KB
Newer Older
Gerd Moellmann's avatar
Gerd Moellmann committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66
;;; mm-view.el --- Functions for viewing MIME objects
;; Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.

;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; This file is part of GNU Emacs.

;; GNU Emacs 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, or (at your option)
;; any later version.

;; GNU Emacs 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 GNU Emacs; see the file COPYING.  If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Commentary:

;;; Code:

(eval-when-compile (require 'cl))
(require 'mail-parse)
(require 'mailcap)
(require 'mm-bodies)
(require 'mm-decode)

(eval-and-compile
  (autoload 'gnus-article-prepare-display "gnus-art")
  (autoload 'vcard-parse-string "vcard")
  (autoload 'vcard-format-string "vcard")
  (autoload 'fill-flowed "flow-fill")
  (autoload 'diff-mode "diff-mode"))

;;;
;;; Functions for displaying various formats inline
;;;
(defun mm-inline-image-emacs (handle)
  (let ((b (point-marker))
	buffer-read-only)
    (insert "\n")
    (put-image (mm-get-image handle) b)
    (mm-handle-set-undisplayer
     handle
     `(lambda () (remove-images ,b (1+ ,b))))))

(defun mm-inline-image-xemacs (handle)
  (let ((b (point))
	(annot (make-annotation (mm-get-image handle) nil 'text))
	buffer-read-only)
    (insert "\n")
    (mm-handle-set-undisplayer
     handle
     `(lambda ()
	(let (buffer-read-only)
	  (delete-annotation ,annot)
	  (delete-region ,(set-marker (make-marker) b)
			 ,(set-marker (make-marker) (point))))))
    (set-extent-property annot 'mm t)
    (set-extent-property annot 'duplicable t)))

(eval-and-compile
Dave Love's avatar
Dave Love committed
67
  (if (featurep 'xemacs)
Gerd Moellmann's avatar
Gerd Moellmann committed
68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253
      (defalias 'mm-inline-image 'mm-inline-image-xemacs)
    (defalias 'mm-inline-image 'mm-inline-image-emacs)))

(defvar mm-w3-setup nil)
(defun mm-setup-w3 ()
  (unless mm-w3-setup
    (require 'w3)
    (w3-do-setup)
    (require 'url)
    (require 'w3-vars)
    (require 'url-vars)
    (setq mm-w3-setup t)))

(defun mm-inline-text (handle)
  (let ((type (mm-handle-media-subtype handle))
	text buffer-read-only)
    (cond
     ((equal type "html")
      (mm-setup-w3)
      (setq text (mm-get-part handle))
      (let ((b (point))
	    (url-standalone-mode t)
	    (url-current-object
	     (url-generic-parse-url (format "cid:%s" (mm-handle-id handle))))
	    (width (window-width))
	    (charset (mail-content-type-get
		      (mm-handle-type handle) 'charset)))
	(save-excursion
	  (insert text)
	  (save-restriction
	    (narrow-to-region b (point))
	    (goto-char (point-min))
	    (if (or (and (boundp 'w3-meta-content-type-charset-regexp)
			 (re-search-forward
			  w3-meta-content-type-charset-regexp nil t))
		    (and (boundp 'w3-meta-charset-content-type-regexp)
			 (re-search-forward
			  w3-meta-charset-content-type-regexp nil t)))
		(setq charset (or (w3-coding-system-for-mime-charset 
				   (buffer-substring-no-properties 
				    (match-beginning 2) 
				    (match-end 2)))
				  charset)))
	    (delete-region (point-min) (point-max))
	    (insert (mm-decode-string text charset))
	    (save-window-excursion
	      (save-restriction
		(let ((w3-strict-width width)
		      ;; Don't let w3 set the global version of
		      ;; this variable.
		      (fill-column fill-column)
		      (url-standalone-mode t))
		  (condition-case var
		      (w3-region (point-min) (point-max))
		    (error)))))
	    (mm-handle-set-undisplayer
	     handle
	     `(lambda ()
		(let (buffer-read-only)
		  (if (functionp 'remove-specifier)
		      (mapcar (lambda (prop)
				(remove-specifier
				 (face-property 'default prop)
				 (current-buffer)))
			      '(background background-pixmap foreground)))
		  (delete-region ,(point-min-marker)
				 ,(point-max-marker)))))))))
     ((or (equal type "enriched")
	  (equal type "richtext"))
      (save-excursion
	(mm-with-unibyte-buffer
	  (mm-insert-part handle)
	  (save-window-excursion
	    (enriched-decode (point-min) (point-max))
	    (setq text (buffer-string)))))
      (mm-insert-inline handle text))
     ((equal type "x-vcard")
      (mm-insert-inline
       handle
       (concat "\n-- \n"
	       (if (fboundp 'vcard-pretty-print)
		   (vcard-pretty-print (mm-get-part handle))
		 (vcard-format-string
		  (vcard-parse-string (mm-get-part handle)
				      'vcard-standard-filter))))))
     (t
      (let ((b (point))
	    (charset (mail-content-type-get
		      (mm-handle-type handle) 'charset)))
	(if (or (eq charset 'gnus-decoded)
		;; This is probably not entirely correct, but
		;; makes rfc822 parts with embedded multiparts work. 
		(eq mail-parse-charset 'gnus-decoded))
	    (mm-insert-part handle)
	  (insert (mm-decode-string (mm-get-part handle) charset)))
	(when (and (equal type "plain")
		   (equal (cdr (assoc 'format (mm-handle-type handle)))
			  "flowed"))
	  (save-restriction
	    (narrow-to-region b (point))
	    (goto-char b)
	    (fill-flowed)
	    (goto-char (point-max))))
	(save-restriction
	  (narrow-to-region b (point))
	  (set-text-properties (point-min) (point-max) nil)
	  (mm-handle-set-undisplayer
	   handle
	   `(lambda ()
	      (let (buffer-read-only)
		(delete-region ,(point-min-marker)
			       ,(point-max-marker)))))))))))

(defun mm-insert-inline (handle text)
  "Insert TEXT inline from HANDLE."
  (let ((b (point)))
    (insert text)
    (mm-handle-set-undisplayer
     handle
     `(lambda ()
	(let (buffer-read-only)
	  (delete-region ,(set-marker (make-marker) b)
			 ,(set-marker (make-marker) (point))))))))

(defun mm-inline-audio (handle)
  (message "Not implemented"))

(defun mm-view-sound-file ()
  (message "Not implemented"))

(defun mm-w3-prepare-buffer ()
  (require 'w3)
  (let ((url-standalone-mode t))
    (w3-prepare-buffer)))

(defun mm-view-message ()
  (mm-enable-multibyte)
  (let (handles)
    (let (gnus-article-mime-handles)
      ;; Double decode problem may happen.  See mm-inline-message.
      (run-hooks 'gnus-article-decode-hook)
      (gnus-article-prepare-display)
      (setq handles gnus-article-mime-handles))
    (when handles
      (setq gnus-article-mime-handles
	    (nconc gnus-article-mime-handles 
		   (if (listp (car handles)) 
		       handles (list handles))))))
  (fundamental-mode)
  (goto-char (point-min)))

(defun mm-inline-message (handle)
  (let ((b (point))
	(charset (mail-content-type-get
		  (mm-handle-type handle) 'charset))
	gnus-displaying-mime handles)
    (when (and charset
	       (stringp charset))
      (setq charset (intern (downcase charset)))
      (when (eq charset 'us-ascii)
	(setq charset nil)))
    (save-excursion
      (save-restriction
	(narrow-to-region b b)
	(mm-insert-part handle)
	(let (gnus-article-mime-handles
	      ;; disable prepare hook 
	      gnus-article-prepare-hook  
	      (gnus-newsgroup-charset
	       (or charset gnus-newsgroup-charset)))
	  (run-hooks 'gnus-article-decode-hook)
	  (gnus-article-prepare-display)
	  (setq handles gnus-article-mime-handles))
	(goto-char (point-max))
	(unless (bolp)
	  (insert "\n"))
	(insert "----------\n\n")
	(when handles
	  (setq gnus-article-mime-handles
		(nconc gnus-article-mime-handles 
		       (if (listp (car handles)) 
			   handles (list handles)))))
	(mm-handle-set-undisplayer
	 handle
	 `(lambda ()
	    (let (buffer-read-only)
Dave Love's avatar
Dave Love committed
254
	      (if (fboundp 'remove-specifier)
Gerd Moellmann's avatar
Gerd Moellmann committed
255 256 257 258
		  ;; This is only valid on XEmacs.
		  (mapcar (lambda (prop)
			    (remove-specifier
			     (face-property 'default prop) (current-buffer)))
Dave Love's avatar
Dave Love committed
259
			  '(background background-pixmap foreground)))
Gerd Moellmann's avatar
Gerd Moellmann committed
260 261
	      (delete-region ,(point-min-marker) ,(point-max-marker)))))))))

Dave Love's avatar
Dave Love committed
262
(defun mm-display-inline-fontify (handle mode)
Gerd Moellmann's avatar
Gerd Moellmann committed
263 264 265
  (let (text)
    (with-temp-buffer
      (mm-insert-part handle)
Dave Love's avatar
Dave Love committed
266
      (funcall mode)
Gerd Moellmann's avatar
Gerd Moellmann committed
267 268 269 270 271 272 273 274 275
      (font-lock-fontify-buffer)
      (when (fboundp 'extent-list)
	(map-extents (lambda (ext ignored)
		       (set-extent-property ext 'duplicable t)
		       nil)
		     nil nil nil nil nil 'text-prop))
      (setq text (buffer-string)))
    (mm-insert-inline handle text)))

Dave Love's avatar
Dave Love committed
276 277 278 279 280 281
(defun mm-display-patch-inline (handle)
  (mm-display-inline-fontify handle 'diff-mode))

(defun mm-display-elisp-inline (handle)
  (mm-display-inline-fontify handle 'emacs-lisp-mode))

Gerd Moellmann's avatar
Gerd Moellmann committed
282 283 284
(provide 'mm-view)

;; mm-view.el ends here