1 ;;; mime-view.el --- interactive MIME viewer for GNU Emacs
3 ;; Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
7 ;; Renamed: 1994/08/31 from tm-body.el
8 ;; Renamed: 1997/02/19 from tm-view.el
9 ;; Keywords: MIME, multimedia, mail, news
11 ;; This file is part of SEMI (Sophisticated Emacs MIME Interfaces).
13 ;; This program is free software; you can redistribute it and/or
14 ;; modify it under the terms of the GNU General Public License as
15 ;; published by the Free Software Foundation; either version 2, or (at
16 ;; your option) any later version.
18 ;; This program is distributed in the hope that it will be useful, but
19 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 ;; General Public License for more details.
23 ;; You should have received a copy of the GNU General Public License
24 ;; along with GNU Emacs; see the file COPYING. If not, write to the
25 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
26 ;; Boston, MA 02111-1307, USA.
40 (defconst mime-view-version-string
41 `,(concat (car mime-user-interface-version) " MIME-View "
42 (mapconcat #'number-to-string
43 (cddr mime-user-interface-version) ".")
44 " (" (cadr mime-user-interface-version) ")"))
50 (defgroup mime-view nil
54 (defcustom mime-view-find-every-acting-situation t
55 "*Find every available acting-situation if non-nil."
59 (defcustom mime-acting-situation-examples-file "~/.mime-example"
60 "*File name of example about acting-situation demonstrated by user."
65 ;;; @ in raw-buffer (representation space)
68 (defvar mime-preview-buffer nil
69 "MIME-preview buffer corresponding with the (raw) buffer.")
70 (make-variable-buffer-local 'mime-preview-buffer)
73 (defvar mime-raw-representation-type-alist
74 '((mime-show-message-mode . binary)
75 (mime-temp-message-mode . binary)
78 "Alist of major-mode vs. representation-type of mime-raw-buffer.
79 Each element looks like (SYMBOL . REPRESENTATION-TYPE). SYMBOL is
80 major-mode or t. t means default. REPRESENTATION-TYPE must be
81 `binary' or `cooked'.")
84 (defun mime-raw-find-entity-from-point (point &optional message-info)
85 "Return entity from POINT in mime-raw-buffer.
86 If optional argument MESSAGE-INFO is not specified,
87 `mime-message-structure' is used."
89 (setq message-info mime-message-structure))
90 (if (and (<= (mime-entity-point-min message-info) point)
91 (<= point (mime-entity-point-max message-info)))
92 (let ((children (mime-entity-children message-info)))
96 (mime-raw-find-entity-from-point point (car children))))
100 (setq children (cdr children)))
104 ;;; @ in preview-buffer (presentation space)
107 (defvar mime-mother-buffer nil
108 "Mother buffer corresponding with the (MIME-preview) buffer.
109 If current MIME-preview buffer is generated by other buffer, such as
110 message/partial, it is called `mother-buffer'.")
111 (make-variable-buffer-local 'mime-mother-buffer)
113 (defvar mime-raw-buffer nil
114 "Raw buffer corresponding with the (MIME-preview) buffer.")
115 (make-variable-buffer-local 'mime-raw-buffer)
117 (defvar mime-preview-original-window-configuration nil
118 "Window-configuration before mime-view-mode is called.")
119 (make-variable-buffer-local 'mime-preview-original-window-configuration)
121 (defun mime-preview-original-major-mode (&optional recursive)
122 "Return major-mode of original buffer.
123 If optional argument RECURSIVE is non-nil and current buffer has
124 mime-mother-buffer, it returns original major-mode of the
126 (if (and recursive mime-mother-buffer)
128 (set-buffer mime-mother-buffer)
129 (mime-preview-original-major-mode recursive)
134 (get-text-property (point-min) 'mime-view-entity)))
138 ;;; @ entity information
141 (defun mime-entity-situation (entity)
142 "Return situation of ENTITY."
143 (append (or (mime-entity-content-type entity)
144 (make-mime-content-type 'text 'plain))
145 (let ((d (mime-entity-content-disposition entity)))
146 (cons (cons 'disposition-type
147 (mime-content-disposition-type d))
150 (let ((name (car param)))
151 (cons (cond ((string= name "filename")
153 ((string= name "creation-date")
155 ((string= name "modification-date")
157 ((string= name "read-date")
159 ((string= name "size")
161 (t (cons 'disposition (car param))))
163 (mime-content-disposition-parameters d))
165 (list (cons 'encoding (mime-entity-encoding entity))
168 (set-buffer (mime-entity-buffer entity))
173 (defun mime-view-entity-title (entity)
174 (or (mime-read-field 'Content-Description entity)
175 (mime-read-field 'Subject entity)
176 (mime-entity-filename entity)
180 (defsubst mime-raw-point-to-entity-node-id (point &optional message-info)
181 "Return entity-node-id from POINT in mime-raw-buffer.
182 If optional argument MESSAGE-INFO is not specified,
183 `mime-message-structure' is used."
184 (mime-entity-node-id (mime-raw-find-entity-from-point point message-info)))
186 (defsubst mime-raw-point-to-entity-number (point &optional message-info)
187 "Return entity-number from POINT in mime-raw-buffer.
188 If optional argument MESSAGE-INFO is not specified,
189 `mime-message-structure' is used."
190 (mime-entity-number (mime-raw-find-entity-from-point point message-info)))
192 (defun mime-raw-flatten-message-info (&optional message-info)
193 "Return list of entity in mime-raw-buffer.
194 If optional argument MESSAGE-INFO is not specified,
195 `mime-message-structure' is used."
197 (setq message-info mime-message-structure))
198 (let ((dest (list message-info))
199 (rcl (mime-entity-children message-info)))
201 (setq dest (nconc dest (mime-raw-flatten-message-info (car rcl))))
202 (setq rcl (cdr rcl)))
206 ;;; @ presentation of preview
212 ;;; @@@ predicate function
215 (defun mime-view-entity-button-visible-p (entity)
216 "Return non-nil if header of ENTITY is visible.
217 Please redefine this function if you want to change default setting."
218 (let ((media-type (mime-entity-media-type entity))
219 (media-subtype (mime-entity-media-subtype entity)))
220 (or (not (eq media-type 'application))
221 (and (not (eq media-subtype 'x-selection))
222 (or (not (eq media-subtype 'octet-stream))
223 (let ((mother-entity (mime-entity-parent entity)))
224 (or (not (eq (mime-entity-media-type mother-entity)
226 (not (eq (mime-entity-media-subtype mother-entity)
231 ;;; @@@ entity button generator
234 (defun mime-view-insert-entity-button (entity)
235 "Insert entity-button of ENTITY."
236 (let ((entity-node-id (mime-entity-node-id entity))
237 (params (mime-entity-parameters entity))
238 (subject (mime-view-entity-title entity)))
240 (let ((access-type (assoc "access-type" params))
241 (num (or (cdr (assoc "x-part-number" params))
242 (if (consp entity-node-id)
245 (format "%s" (1+ num))
247 (reverse entity-node-id) ".")
251 (let ((server (assoc "server" params)))
252 (setq access-type (cdr access-type))
254 (format "%s %s ([%s] %s)"
255 num subject access-type (cdr server))
256 (let ((site (cdr (assoc "site" params)))
257 (dir (cdr (assoc "directory" params)))
259 (format "%s %s ([%s] %s:%s)"
260 num subject access-type site dir)
264 (let ((media-type (mime-entity-media-type entity))
265 (media-subtype (mime-entity-media-subtype entity))
266 (charset (cdr (assoc "charset" params)))
267 (encoding (mime-entity-encoding entity)))
271 (format " <%s/%s%s%s>"
272 media-type media-subtype
274 (concat "; " charset)
277 (concat " (" encoding ")")
279 (if (>= (+ (current-column)(length rest))(window-width))
283 (function mime-preview-play-current-entity))
290 (defvar mime-header-presentation-method-alist nil
291 "Alist of major mode vs. corresponding header-presentation-method functions.
292 Each element looks like (SYMBOL . FUNCTION).
293 SYMBOL must be major mode in raw-buffer or t. t means default.
294 Interface of FUNCTION must be (ENTITY SITUATION).")
296 (defvar mime-view-ignored-field-list
297 '(".*Received" ".*Path" ".*Id" "References"
298 "Replied" "Errors-To"
299 "Lines" "Sender" ".*Host" "Xref"
300 "Content-Type" "Precedence"
302 "All fields that match this list will be hidden in MIME preview buffer.
303 Each elements are regexp of field-name.")
305 (defvar mime-view-visible-field-list '("Dnas.*" "Message-Id")
306 "All fields that match this list will be displayed in MIME preview buffer.
307 Each elements are regexp of field-name.")
313 ;;; @@@ predicate function
316 (defun mime-calist::field-match-method-as-default-rule (calist
317 field-type field-value)
318 (let ((s-field (assq field-type calist)))
319 (cond ((null s-field)
320 (cons (cons field-type field-value) calist)
324 (define-calist-field-match-method
325 'header #'mime-calist::field-match-method-as-default-rule)
327 (define-calist-field-match-method
328 'body #'mime-calist::field-match-method-as-default-rule)
331 (defvar mime-preview-condition nil
332 "Condition-tree about how to display entity.")
334 (ctree-set-calist-strictly
335 'mime-preview-condition '((type . application)(subtype . octet-stream)
338 (ctree-set-calist-strictly
339 'mime-preview-condition '((type . application)(subtype . octet-stream)
342 (ctree-set-calist-strictly
343 'mime-preview-condition '((type . application)(subtype . octet-stream)
347 (ctree-set-calist-strictly
348 'mime-preview-condition '((type . application)(subtype . pgp)
351 (ctree-set-calist-strictly
352 'mime-preview-condition '((type . application)(subtype . x-latex)
355 (ctree-set-calist-strictly
356 'mime-preview-condition '((type . application)(subtype . x-selection)
359 (ctree-set-calist-strictly
360 'mime-preview-condition '((type . application)(subtype . x-comment)
363 (ctree-set-calist-strictly
364 'mime-preview-condition '((type . message)(subtype . delivery-status)
367 (ctree-set-calist-strictly
368 'mime-preview-condition
370 (body-presentation-method . mime-display-text/plain)))
372 (ctree-set-calist-strictly
373 'mime-preview-condition
376 (body-presentation-method . mime-display-text/plain)))
378 (ctree-set-calist-strictly
379 'mime-preview-condition
380 '((type . text)(subtype . enriched)
382 (body-presentation-method . mime-display-text/enriched)))
384 (ctree-set-calist-strictly
385 'mime-preview-condition
386 '((type . text)(subtype . richtext)
388 (body-presentation-method . mime-display-text/richtext)))
390 (ctree-set-calist-strictly
391 'mime-preview-condition
392 '((type . text)(subtype . t)
394 (body-presentation-method . mime-display-text/plain)))
396 (ctree-set-calist-strictly
397 'mime-preview-condition
398 '((type . multipart)(subtype . alternative)
400 (body-presentation-method . mime-display-multipart/alternative)))
402 (ctree-set-calist-strictly
403 'mime-preview-condition '((type . message)(subtype . partial)
404 (body-presentation-method
405 . mime-display-message/partial-button)))
407 (ctree-set-calist-strictly
408 'mime-preview-condition '((type . message)(subtype . rfc822)
409 (body-presentation-method . nil)
410 (childrens-situation (header . visible)
411 (entity-button . invisible))))
413 (ctree-set-calist-strictly
414 'mime-preview-condition '((type . message)(subtype . news)
415 (body-presentation-method . nil)
416 (childrens-situation (header . visible)
417 (entity-button . invisible))))
420 ;;; @@@ entity presentation
423 (autoload 'mime-display-text/plain "mime-text")
424 (autoload 'mime-display-text/enriched "mime-text")
425 (autoload 'mime-display-text/richtext "mime-text")
427 (defvar mime-view-announcement-for-message/partial
428 (if (and (>= emacs-major-version 19) window-system)
430 \[[ This is message/partial style split message. ]]
431 \[[ Please press `v' key in this buffer ]]
432 \[[ or click here by mouse button-2. ]]"
434 \[[ This is message/partial style split message. ]]
435 \[[ Please press `v' key in this buffer. ]]"
438 (defun mime-display-message/partial-button (&optional entity situation)
440 (goto-char (point-max))
441 (if (not (search-backward "\n\n" nil t))
444 (goto-char (point-max))
445 (narrow-to-region (point-max)(point-max))
446 (insert mime-view-announcement-for-message/partial)
447 (mime-add-button (point-min)(point-max)
448 #'mime-preview-play-current-entity)
451 (defun mime-display-multipart/mixed (entity situation)
452 (let ((children (mime-entity-children entity))
454 (cdr (assq 'childrens-situation situation))))
456 (mime-display-entity (car children) nil default-situation)
457 (setq children (cdr children))
460 (defcustom mime-view-type-subtype-score-alist
461 '(((text . enriched) . 3)
462 ((text . richtext) . 2)
465 "Alist MEDIA-TYPE vs corresponding score.
466 MEDIA-TYPE must be (TYPE . SUBTYPE), TYPE or t. t means default."
468 :type '(repeat (cons (choice :tag "Media-Type"
469 (item :tag "Type/Subtype"
470 (cons symbol symbol))
471 (item :tag "Type" symbol)
472 (item :tag "Default" t))
475 (defun mime-display-multipart/alternative (entity situation)
476 (let* ((children (mime-entity-children entity))
478 (cdr (assq 'childrens-situation situation)))
486 (or (ctree-match-calist
487 mime-preview-condition
488 (append (mime-entity-situation child)
491 (if (cdr (assq 'body-presentation-method situation))
496 (cdr (assq 'type situation))
497 (cdr (assq 'subtype situation)))
498 mime-view-type-subtype-score-alist)
500 (cdr (assq 'type situation))
501 mime-view-type-subtype-score-alist)
504 mime-view-type-subtype-score-alist)
506 (if (> score max-score)
516 (let ((child (car children))
517 (situation (car situations)))
518 (mime-display-entity child (if (= i p)
520 (del-alist 'body-presentation-method
521 (copy-alist situation))))
523 (setq children (cdr children)
524 situations (cdr situations)
529 ;;; @ acting-condition
532 (defvar mime-acting-condition nil
533 "Condition-tree about how to process entity.")
535 (if (file-readable-p mailcap-file)
536 (let ((entries (mailcap-parse-file)))
538 (let ((entry (car entries))
541 (let* ((field (car entry))
542 (field-type (car field)))
543 (cond ((eq field-type 'view) (setq view field))
544 ((eq field-type 'print) (setq print field))
545 ((memq field-type '(compose composetyped edit)))
546 (t (setq shared (cons field shared))))
548 (setq entry (cdr entry))
550 (setq shared (nreverse shared))
551 (ctree-set-calist-with-default
552 'mime-acting-condition
553 (append shared (list '(mode . "play")(cons 'method (cdr view)))))
555 (ctree-set-calist-with-default
556 'mime-acting-condition
558 (list '(mode . "print")(cons 'method (cdr view))))
561 (setq entries (cdr entries))
564 (ctree-set-calist-strictly
565 'mime-acting-condition
566 '((type . application)(subtype . octet-stream)
568 (method . mime-detect-content)
571 (ctree-set-calist-with-default
572 'mime-acting-condition
574 (method . mime-save-content)))
576 (ctree-set-calist-strictly
577 'mime-acting-condition
578 '((type . text)(subtype . x-rot13-47)(mode . "play")
579 (method . mime-view-caesar)
581 (ctree-set-calist-strictly
582 'mime-acting-condition
583 '((type . text)(subtype . x-rot13-47-48)(mode . "play")
584 (method . mime-view-caesar)
587 (ctree-set-calist-strictly
588 'mime-acting-condition
589 '((type . message)(subtype . rfc822)(mode . "play")
590 (method . mime-view-message/rfc822)
592 (ctree-set-calist-strictly
593 'mime-acting-condition
594 '((type . message)(subtype . partial)(mode . "play")
595 (method . mime-store-message/partial-piece)
598 (ctree-set-calist-strictly
599 'mime-acting-condition
600 '((type . message)(subtype . external-body)
601 ("access-type" . "anon-ftp")
602 (method . mime-view-message/external-anon-ftp)
605 (ctree-set-calist-strictly
606 'mime-acting-condition
607 '((type . message)(subtype . external-body)
608 ("access-type" . "url")
609 (method . mime-view-message/external-url)
612 (ctree-set-calist-strictly
613 'mime-acting-condition
614 '((type . application)(subtype . octet-stream)
615 (method . mime-save-content)
619 ;;; @ quitting method
622 (defvar mime-preview-quitting-method-alist
623 '((mime-show-message-mode
624 . mime-preview-quitting-method-for-mime-show-message-mode))
625 "Alist of major-mode vs. quitting-method of mime-view.")
627 (defvar mime-preview-over-to-previous-method-alist nil
628 "Alist of major-mode vs. over-to-previous-method of mime-view.")
630 (defvar mime-preview-over-to-next-method-alist nil
631 "Alist of major-mode vs. over-to-next-method of mime-view.")
634 ;;; @ following method
637 (defvar mime-preview-following-method-alist nil
638 "Alist of major-mode vs. following-method of mime-view.")
640 (defvar mime-view-following-required-fields-list
647 (defun mime-display-entity (entity &optional situation
648 default-situation preview-buffer)
650 (setq preview-buffer (current-buffer)))
651 (let* ((raw-buffer (mime-entity-buffer entity))
652 (start (mime-entity-point-min entity))
654 (set-buffer raw-buffer)
658 (or (ctree-match-calist mime-preview-condition
659 (append (mime-entity-situation entity)
662 (let ((button-is-invisible
663 (eq (cdr (assq 'entity-button situation)) 'invisible))
665 (eq (cdr (assq 'header situation)) 'visible))
666 (header-presentation-method
667 (or (cdr (assq 'header-presentation-method situation))
668 (cdr (assq major-mode mime-header-presentation-method-alist))))
669 (body-presentation-method
670 (cdr (assq 'body-presentation-method situation)))
671 (children (mime-entity-children entity)))
672 (set-buffer preview-buffer)
674 (narrow-to-region nb nb)
675 (or button-is-invisible
676 (if (mime-view-entity-button-visible-p entity)
677 (mime-view-insert-entity-button entity)
679 (when header-is-visible
680 (if header-presentation-method
681 (funcall header-presentation-method entity situation)
682 (mime-insert-decoded-header entity
683 mime-view-ignored-field-list
684 mime-view-visible-field-list))
685 (goto-char (point-max))
687 (run-hooks 'mime-display-header-hook)
690 ((functionp body-presentation-method)
691 (funcall body-presentation-method entity situation)
694 (when button-is-invisible
695 (goto-char (point-max))
696 (mime-view-insert-entity-button entity)
698 (or header-is-visible
700 (goto-char (point-max))
704 (setq ne (point-max))
706 (put-text-property nb ne 'mime-view-entity entity)
709 (if (functionp body-presentation-method)
710 (funcall body-presentation-method entity situation)
711 (mime-display-multipart/mixed entity situation)
716 ;;; @ MIME viewer mode
719 (defconst mime-view-menu-title "MIME-View")
720 (defconst mime-view-menu-list
721 '((up "Move to upper entity" mime-preview-move-to-upper)
722 (previous "Move to previous entity" mime-preview-move-to-previous)
723 (next "Move to next entity" mime-preview-move-to-next)
724 (scroll-down "Scroll-down" mime-preview-scroll-down-entity)
725 (scroll-up "Scroll-up" mime-preview-scroll-up-entity)
726 (play "Play current entity" mime-preview-play-current-entity)
727 (extract "Extract current entity" mime-preview-extract-current-entity)
728 (print "Print current entity" mime-preview-print-current-entity)
730 "Menu for MIME Viewer")
732 (cond (running-xemacs
733 (defvar mime-view-xemacs-popup-menu
734 (cons mime-view-menu-title
737 (vector (nth 1 item)(nth 2 item) t)
739 mime-view-menu-list)))
740 (defun mime-view-xemacs-popup-menu (event)
741 "Popup the menu in the MIME Viewer buffer"
743 (select-window (event-window event))
744 (set-buffer (event-buffer event))
745 (popup-menu 'mime-view-xemacs-popup-menu))
746 (defvar mouse-button-2 'button2)
749 (defvar mouse-button-2 [mouse-2])
752 (defun mime-view-define-keymap (&optional default)
753 (let ((mime-view-mode-map (if (keymapp default)
754 (copy-keymap default)
757 (define-key mime-view-mode-map
758 "u" (function mime-preview-move-to-upper))
759 (define-key mime-view-mode-map
760 "p" (function mime-preview-move-to-previous))
761 (define-key mime-view-mode-map
762 "n" (function mime-preview-move-to-next))
763 (define-key mime-view-mode-map
764 "\e\t" (function mime-preview-move-to-previous))
765 (define-key mime-view-mode-map
766 "\t" (function mime-preview-move-to-next))
767 (define-key mime-view-mode-map
768 " " (function mime-preview-scroll-up-entity))
769 (define-key mime-view-mode-map
770 "\M- " (function mime-preview-scroll-down-entity))
771 (define-key mime-view-mode-map
772 "\177" (function mime-preview-scroll-down-entity))
773 (define-key mime-view-mode-map
774 "\C-m" (function mime-preview-next-line-entity))
775 (define-key mime-view-mode-map
776 "\C-\M-m" (function mime-preview-previous-line-entity))
777 (define-key mime-view-mode-map
778 "v" (function mime-preview-play-current-entity))
779 (define-key mime-view-mode-map
780 "e" (function mime-preview-extract-current-entity))
781 (define-key mime-view-mode-map
782 "\C-c\C-p" (function mime-preview-print-current-entity))
783 (define-key mime-view-mode-map
784 "a" (function mime-preview-follow-current-entity))
785 (define-key mime-view-mode-map
786 "q" (function mime-preview-quit))
787 (define-key mime-view-mode-map
788 "\C-c\C-x" (function mime-preview-kill-buffer))
789 ;; (define-key mime-view-mode-map
790 ;; "<" (function beginning-of-buffer))
791 ;; (define-key mime-view-mode-map
792 ;; ">" (function end-of-buffer))
793 (define-key mime-view-mode-map
794 "?" (function describe-mode))
795 (define-key mime-view-mode-map
796 [tab] (function mime-preview-move-to-next))
797 (define-key mime-view-mode-map
798 [delete] (function mime-preview-scroll-down-entity))
799 (define-key mime-view-mode-map
800 [backspace] (function mime-preview-scroll-down-entity))
801 (if (functionp default)
802 (cond (running-xemacs
803 (set-keymap-default-binding mime-view-mode-map default)
806 (setq mime-view-mode-map
807 (append mime-view-mode-map (list (cons t default))))
810 (define-key mime-view-mode-map
811 mouse-button-2 (function mime-button-dispatcher))
813 (cond (running-xemacs
814 (define-key mime-view-mode-map
815 mouse-button-3 (function mime-view-xemacs-popup-menu))
817 ((>= emacs-major-version 19)
818 (define-key mime-view-mode-map [menu-bar mime-view]
819 (cons mime-view-menu-title
820 (make-sparse-keymap mime-view-menu-title)))
823 (define-key mime-view-mode-map
824 (vector 'menu-bar 'mime-view (car item))
825 (cons (nth 1 item)(nth 2 item))
828 (reverse mime-view-menu-list)
831 (use-local-map mime-view-mode-map)
832 (run-hooks 'mime-view-define-keymap-hook)
835 (defsubst mime-maybe-hide-echo-buffer ()
836 "Clear mime-echo buffer and delete window for it."
837 (let ((buf (get-buffer mime-echo-buffer-name)))
842 (let ((win (get-buffer-window buf)))
849 (defvar mime-view-redisplay nil)
851 (defun mime-display-message (message &optional preview-buffer
852 mother default-keymap-or-function)
853 (mime-maybe-hide-echo-buffer)
854 (let ((win-conf (current-window-configuration))
855 (raw-buffer (mime-entity-buffer message)))
858 (concat "*Preview-" (buffer-name raw-buffer) "*")))
859 (set-buffer raw-buffer)
860 (setq mime-preview-buffer preview-buffer)
861 (let ((inhibit-read-only t))
862 (set-buffer (get-buffer-create preview-buffer))
865 (setq mime-raw-buffer raw-buffer)
867 (setq mime-mother-buffer mother)
869 (setq mime-preview-original-window-configuration win-conf)
870 (setq major-mode 'mime-view-mode)
871 (setq mode-name "MIME-View")
872 (mime-display-entity message nil
873 '((entity-button . invisible)
876 (mime-view-define-keymap default-keymap-or-function)
878 (next-single-property-change (point-min) 'mime-view-entity)))
881 (goto-char (point-min))
882 (search-forward "\n\n" nil t)
884 (run-hooks 'mime-view-mode-hook)
885 (set-buffer-modified-p nil)
886 (setq buffer-read-only t)
887 (or (get-buffer-window preview-buffer)
888 (let ((r-win (get-buffer-window raw-buffer)))
890 (set-window-buffer r-win preview-buffer)
891 (let ((m-win (and mother (get-buffer-window mother))))
893 (set-window-buffer m-win preview-buffer)
894 (switch-to-buffer preview-buffer)
898 (defun mime-view-buffer (&optional raw-buffer preview-buffer mother
899 default-keymap-or-function
901 "View RAW-BUFFER in MIME-View mode.
902 Optional argument PREVIEW-BUFFER is either nil or a name of preview
904 Optional argument DEFAULT-KEYMAP-OR-FUNCTION is nil, keymap or
905 function. If it is a keymap, keymap of MIME-View mode will be added
906 to it. If it is a function, it will be bound as default binding of
907 keymap of MIME-View mode.
908 Optional argument REPRESENTATION-TYPE is representation-type of
909 message. It must be nil, `binary' or `cooked'. If it is nil,
910 `binary' is used as default."
913 (setq raw-buffer (current-buffer)))
914 (or representation-type
915 (setq representation-type
917 (set-buffer raw-buffer)
918 (cdr (or (assq major-mode mime-raw-representation-type-alist)
919 (assq t mime-raw-representation-type-alist)))
921 (if (eq representation-type 'binary)
922 (setq representation-type 'buffer)
924 (mime-display-message
925 (mime-open-entity representation-type raw-buffer)
926 preview-buffer mother default-keymap-or-function))
928 (defun mime-view-mode (&optional mother ctl encoding
929 raw-buffer preview-buffer
930 default-keymap-or-function)
931 "Major mode for viewing MIME message.
933 Here is a list of the standard keys for mime-view-mode.
938 u Move to upper content
939 p or M-TAB Move to previous content
940 n or TAB Move to next content
941 SPC Scroll up or move to next content
942 M-SPC or DEL Scroll down or move to previous content
943 RET Move to next line
944 M-RET Move to previous line
945 v Decode current content as `play mode'
946 e Decode current content as `extract mode'
947 C-c C-p Decode current content as `print mode'
948 a Followup to current content.
950 button-2 Move to point under the mouse cursor
951 and decode current content as `play mode'
954 (unless mime-view-redisplay
956 (if raw-buffer (set-buffer raw-buffer))
959 (or (assq major-mode mime-raw-representation-type-alist)
960 (assq t mime-raw-representation-type-alist)))))
961 (if (eq type 'binary)
964 (setq mime-message-structure (mime-open-entity type raw-buffer))
965 (or (mime-entity-content-type mime-message-structure)
966 (mime-entity-set-content-type-internal
967 mime-message-structure ctl))
969 (or (mime-entity-encoding mime-message-structure)
970 (mime-entity-set-encoding-internal mime-message-structure encoding))
972 (mime-display-message mime-message-structure preview-buffer
973 mother default-keymap-or-function)
980 (autoload 'mime-preview-play-current-entity "mime-play"
981 "Play current entity." t)
983 (defun mime-preview-extract-current-entity ()
984 "Extract current entity into file (maybe).
985 It decodes current entity to call internal or external method as
986 \"extract\" mode. The method is selected from variable
987 `mime-acting-condition'."
989 (mime-preview-play-current-entity "extract")
992 (defun mime-preview-print-current-entity ()
993 "Print current entity (maybe).
994 It decodes current entity to call internal or external method as
995 \"print\" mode. The method is selected from variable
996 `mime-acting-condition'."
998 (mime-preview-play-current-entity "print")
1005 (defun mime-preview-follow-current-entity ()
1006 "Write follow message to current entity.
1007 It calls following-method selected from variable
1008 `mime-preview-following-method-alist'."
1011 (while (null (setq entity
1012 (get-text-property (point) 'mime-view-entity)))
1016 (previous-single-property-change (point) 'mime-view-entity))
1018 (entity-node-id (mime-entity-node-id entity))
1019 (len (length entity-node-id))
1023 (if (eq (next-single-property-change (point-min)
1029 ((eq (next-single-property-change p-beg 'mime-view-entity)
1031 (setq p-beg (point))
1033 (setq p-end (next-single-property-change p-beg 'mime-view-entity))
1035 (setq p-end (point-max))
1037 ((null entity-node-id)
1038 (setq p-end (point-max))
1046 (next-single-property-change
1047 (point) 'mime-view-entity))
1049 (let ((rc (mime-entity-node-id
1050 (get-text-property (point)
1051 'mime-view-entity))))
1052 (or (equal entity-node-id
1053 (nthcdr (- (length rc) len) rc))
1058 (setq p-end (point-max))
1061 (let* ((mode (mime-preview-original-major-mode 'recursive))
1063 (format "%s-%s" (buffer-name) (reverse entity-node-id)))
1065 (the-buf (current-buffer))
1066 (a-buf mime-raw-buffer)
1069 (set-buffer (setq new-buf (get-buffer-create new-name)))
1071 (insert-buffer-substring the-buf p-beg p-end)
1072 (goto-char (point-min))
1073 (let ((entity-node-id (mime-entity-node-id entity)) ci str)
1080 (mime-find-entity-from-node-id entity-node-id))
1083 (mime-entity-point-min ci)
1084 (mime-entity-point-max ci)
1086 (std11-header-string-except
1088 (apply (function regexp-or) fields)
1091 (eq (mime-entity-media-type ci) 'message)
1092 (eq (mime-entity-media-subtype ci) 'rfc822))
1098 (setq fields (std11-collect-field-names)
1099 entity-node-id (cdr entity-node-id))
1102 (let ((rest mime-view-following-required-fields-list))
1104 (let ((field-name (car rest)))
1105 (or (std11-field-body field-name)
1111 (set-buffer the-buf)
1112 (set-buffer mime-mother-buffer)
1113 (set-buffer mime-raw-buffer)
1114 (std11-field-body field-name)
1118 (setq rest (cdr rest))
1120 (eword-decode-header)
1122 (let ((f (cdr (assq mode mime-preview-following-method-alist))))
1127 "Sorry, following method for %s is not implemented yet."
1136 (defun mime-preview-move-to-upper ()
1137 "Move to upper entity.
1138 If there is no upper entity, call function `mime-preview-quit'."
1141 (while (null (setq cinfo
1142 (get-text-property (point) 'mime-view-entity)))
1145 (let ((r (mime-entity-parent cinfo))
1148 (while (setq point (previous-single-property-change
1149 (point) 'mime-view-entity))
1151 (if (eq r (get-text-property (point) 'mime-view-entity))
1158 (defun mime-preview-move-to-previous ()
1159 "Move to previous entity.
1160 If there is no previous entity, it calls function registered in
1161 variable `mime-preview-over-to-previous-method-alist'."
1163 (while (null (get-text-property (point) 'mime-view-entity))
1166 (let ((point (previous-single-property-change (point) 'mime-view-entity)))
1168 (if (get-text-property (1- point) 'mime-view-entity)
1170 (goto-char (1- point))
1171 (mime-preview-move-to-previous)
1173 (let ((f (assq (mime-preview-original-major-mode)
1174 mime-preview-over-to-previous-method-alist)))
1180 (defun mime-preview-move-to-next ()
1181 "Move to next entity.
1182 If there is no previous entity, it calls function registered in
1183 variable `mime-preview-over-to-next-method-alist'."
1185 (while (null (get-text-property (point) 'mime-view-entity))
1188 (let ((point (next-single-property-change (point) 'mime-view-entity)))
1192 (if (null (get-text-property point 'mime-view-entity))
1193 (mime-preview-move-to-next)
1195 (let ((f (assq (mime-preview-original-major-mode)
1196 mime-preview-over-to-next-method-alist)))
1202 (defun mime-preview-scroll-up-entity (&optional h)
1203 "Scroll up current entity.
1204 If reached to (point-max), it calls function registered in variable
1205 `mime-preview-over-to-next-method-alist'."
1208 (setq h (1- (window-height)))
1210 (if (= (point) (point-max))
1211 (let ((f (assq (mime-preview-original-major-mode)
1212 mime-preview-over-to-next-method-alist)))
1217 (or (next-single-property-change (point) 'mime-view-entity)
1220 (if (> (point) point)
1225 (defun mime-preview-scroll-down-entity (&optional h)
1226 "Scroll down current entity.
1227 If reached to (point-min), it calls function registered in variable
1228 `mime-preview-over-to-previous-method-alist'."
1231 (setq h (1- (window-height)))
1233 (if (= (point) (point-min))
1234 (let ((f (assq (mime-preview-original-major-mode)
1235 mime-preview-over-to-previous-method-alist)))
1240 (or (previous-single-property-change (point) 'mime-view-entity)
1242 (forward-line (- h))
1243 (if (< (point) point)
1247 (defun mime-preview-next-line-entity ()
1249 (mime-preview-scroll-up-entity 1)
1252 (defun mime-preview-previous-line-entity ()
1254 (mime-preview-scroll-down-entity 1)
1261 (defun mime-preview-quit ()
1262 "Quit from MIME-preview buffer.
1263 It calls function registered in variable
1264 `mime-preview-quitting-method-alist'."
1266 (let ((r (assq (mime-preview-original-major-mode)
1267 mime-preview-quitting-method-alist)))
1272 (defun mime-preview-kill-buffer ()
1274 (kill-buffer (current-buffer))
1281 (provide 'mime-view)
1283 (run-hooks 'mime-view-load-hook)
1285 ;;; mime-view.el ends here