1 ;;; mime-view.el --- interactive MIME viewer for GNU Emacs
3 ;; Copyright (C) 1995,1996,1997,1998,1999 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 (Sample of Elastic 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.
41 (defconst mime-view-version
42 (concat (mime-product-name mime-user-interface-product) " MIME-View "
43 (mapconcat #'number-to-string
44 (mime-product-version mime-user-interface-product) ".")
45 " (" (mime-product-code-name mime-user-interface-product) ")"))
51 (defgroup mime-view nil
55 (defcustom mime-view-find-every-acting-situation t
56 "*Find every available acting-situation if non-nil."
60 (defcustom mime-acting-situation-examples-file "~/.mime-example"
61 "*File name of example about acting-situation demonstrated by user."
66 ;;; @ in raw-buffer (representation space)
69 (defvar mime-preview-buffer nil
70 "MIME-preview buffer corresponding with the (raw) buffer.")
71 (make-variable-buffer-local 'mime-preview-buffer)
74 (defvar mime-raw-representation-type-alist
75 '((mime-show-message-mode . binary)
76 (mime-temp-message-mode . binary)
79 "Alist of major-mode vs. representation-type of mime-raw-buffer.
80 Each element looks like (SYMBOL . REPRESENTATION-TYPE). SYMBOL is
81 major-mode or t. t means default. REPRESENTATION-TYPE must be
82 `binary' or `cooked'.")
85 (defun mime-raw-find-entity-from-point (point &optional message-info)
86 "Return entity from POINT in mime-raw-buffer.
87 If optional argument MESSAGE-INFO is not specified,
88 `mime-message-structure' is used."
90 (setq message-info mime-message-structure))
91 (if (and (<= (mime-entity-point-min message-info) point)
92 (<= point (mime-entity-point-max message-info)))
93 (let ((children (mime-entity-children message-info)))
97 (mime-raw-find-entity-from-point point (car children))))
101 (setq children (cdr children)))
105 ;;; @ in preview-buffer (presentation space)
108 (defvar mime-mother-buffer nil
109 "Mother buffer corresponding with the (MIME-preview) buffer.
110 If current MIME-preview buffer is generated by other buffer, such as
111 message/partial, it is called `mother-buffer'.")
112 (make-variable-buffer-local 'mime-mother-buffer)
114 (defvar mime-raw-buffer nil
115 "Raw buffer corresponding with the (MIME-preview) buffer.")
116 (make-variable-buffer-local 'mime-raw-buffer)
118 (defvar mime-preview-original-window-configuration nil
119 "Window-configuration before mime-view-mode is called.")
120 (make-variable-buffer-local 'mime-preview-original-window-configuration)
122 (defun mime-preview-original-major-mode (&optional recursive)
123 "Return major-mode of original buffer.
124 If optional argument RECURSIVE is non-nil and current buffer has
125 mime-mother-buffer, it returns original major-mode of the
127 (if (and recursive mime-mother-buffer)
129 (set-buffer mime-mother-buffer)
130 (mime-preview-original-major-mode recursive)
135 (get-text-property (point-min) 'mime-view-entity)))
139 ;;; @ entity information
142 (defun mime-entity-situation (entity &optional situation)
143 "Return situation of ENTITY."
144 (let (rest param name)
146 (unless (assq 'type situation)
147 (setq rest (or (mime-entity-content-type entity)
148 (make-mime-content-type 'text 'plain))
149 situation (cons (car rest) situation)
152 (unless (assq 'subtype situation)
154 (setq rest (or (cdr (mime-entity-content-type entity))
155 '((subtype . plain)))))
156 (setq situation (cons (car rest) situation)
160 (setq param (car rest))
161 (or (assoc (car param) situation)
162 (setq situation (cons param situation)))
163 (setq rest (cdr rest)))
165 ;; Content-Disposition
167 (unless (assq 'disposition-type situation)
168 (setq rest (mime-entity-content-disposition entity))
170 (setq situation (cons (cons 'disposition-type
171 (mime-content-disposition-type rest))
173 rest (mime-content-disposition-parameters rest))
176 (setq param (car rest)
178 (if (cond ((string= name "filename")
179 (if (assq 'filename situation)
181 (setq name 'filename)))
182 ((string= name "creation-date")
183 (if (assq 'creation-date situation)
185 (setq name 'creation-date)))
186 ((string= name "modification-date")
187 (if (assq 'modification-date situation)
189 (setq name 'modification-date)))
190 ((string= name "read-date")
191 (if (assq 'read-date situation)
193 (setq name 'read-date)))
194 ((string= name "size")
195 (if (assq 'size situation)
198 (t (setq name (cons 'disposition name))
199 (if (assoc name situation)
203 (cons (cons name (cdr param))
205 (setq rest (cdr rest)))
207 ;; Content-Transfer-Encoding
208 (or (assq 'encoding situation)
210 (cons (cons 'encoding (or (mime-entity-encoding entity)
215 (or (assq 'major-mode situation)
217 (cons (cons 'major-mode
218 (with-current-buffer (mime-entity-buffer entity)
224 (defun mime-view-entity-title (entity)
225 (or (mime-read-field 'Content-Description entity)
226 (mime-read-field 'Subject entity)
227 (mime-entity-filename entity)
231 (defsubst mime-raw-point-to-entity-node-id (point &optional message-info)
232 "Return entity-node-id from POINT in mime-raw-buffer.
233 If optional argument MESSAGE-INFO is not specified,
234 `mime-message-structure' is used."
235 (mime-entity-node-id (mime-raw-find-entity-from-point point message-info)))
237 (defsubst mime-raw-point-to-entity-number (point &optional message-info)
238 "Return entity-number from POINT in mime-raw-buffer.
239 If optional argument MESSAGE-INFO is not specified,
240 `mime-message-structure' is used."
241 (mime-entity-number (mime-raw-find-entity-from-point point message-info)))
243 (defun mime-raw-flatten-message-info (&optional message-info)
244 "Return list of entity in mime-raw-buffer.
245 If optional argument MESSAGE-INFO is not specified,
246 `mime-message-structure' is used."
248 (setq message-info mime-message-structure))
249 (let ((dest (list message-info))
250 (rcl (mime-entity-children message-info)))
252 (setq dest (nconc dest (mime-raw-flatten-message-info (car rcl))))
253 (setq rcl (cdr rcl)))
257 ;;; @ presentation of preview
263 ;;; @@@ predicate function
266 (defun mime-view-entity-button-visible-p (entity)
267 "Return non-nil if header of ENTITY is visible.
268 Please redefine this function if you want to change default setting."
269 (let ((media-type (mime-entity-media-type entity))
270 (media-subtype (mime-entity-media-subtype entity)))
271 (or (not (eq media-type 'application))
272 (and (not (eq media-subtype 'x-selection))
273 (or (not (eq media-subtype 'octet-stream))
274 (let ((mother-entity (mime-entity-parent entity)))
275 (or (not (eq (mime-entity-media-type mother-entity)
277 (not (eq (mime-entity-media-subtype mother-entity)
282 ;;; @@@ entity button generator
285 (defun mime-view-insert-entity-button (entity)
286 "Insert entity-button of ENTITY."
287 (let ((entity-node-id (mime-entity-node-id entity))
288 (params (mime-entity-parameters entity))
289 (subject (mime-view-entity-title entity)))
291 (let ((access-type (assoc "access-type" params))
292 (num (or (cdr (assoc "x-part-number" params))
293 (if (consp entity-node-id)
296 (format "%s" (1+ num))
298 (reverse entity-node-id) ".")
302 (let ((server (assoc "server" params)))
303 (setq access-type (cdr access-type))
305 (format "%s %s ([%s] %s)"
306 num subject access-type (cdr server))
307 (let ((site (cdr (assoc "site" params)))
308 (dir (cdr (assoc "directory" params)))
309 (url (cdr (assoc "url" params)))
312 (format "%s %s ([%s] %s)"
313 num subject access-type url)
314 (format "%s %s ([%s] %s:%s)"
315 num subject access-type site dir))
319 (let ((media-type (mime-entity-media-type entity))
320 (media-subtype (mime-entity-media-subtype entity))
321 (charset (cdr (assoc "charset" params)))
322 (encoding (mime-entity-encoding entity)))
326 (format " <%s/%s%s%s>"
327 media-type media-subtype
329 (concat "; " charset)
332 (concat " (" encoding ")")
334 (if (>= (+ (current-column)(length rest))(window-width))
338 (function mime-preview-play-current-entity))
345 (defvar mime-header-presentation-method-alist nil
346 "Alist of major mode vs. corresponding header-presentation-method functions.
347 Each element looks like (SYMBOL . FUNCTION).
348 SYMBOL must be major mode in raw-buffer or t. t means default.
349 Interface of FUNCTION must be (ENTITY SITUATION).")
351 (defvar mime-view-ignored-field-list
352 '(".*Received:" ".*Path:" ".*Id:" "^References:"
353 "^Replied:" "^Errors-To:"
354 "^Lines:" "^Sender:" ".*Host:" "^Xref:"
355 "^Content-Type:" "^Precedence:"
356 "^Status:" "^X-VM-.*:")
357 "All fields that match this list will be hidden in MIME preview buffer.
358 Each elements are regexp of field-name.")
360 (defvar mime-view-visible-field-list '("^Dnas.*:" "^Message-Id:")
361 "All fields that match this list will be displayed in MIME preview buffer.
362 Each elements are regexp of field-name.")
368 ;;; @@@ predicate function
371 (defun mime-calist::field-match-method-as-default-rule (calist
372 field-type field-value)
373 (let ((s-field (assq field-type calist)))
374 (cond ((null s-field)
375 (cons (cons field-type field-value) calist)
379 (define-calist-field-match-method
380 'header #'mime-calist::field-match-method-as-default-rule)
382 (define-calist-field-match-method
383 'body #'mime-calist::field-match-method-as-default-rule)
386 (defvar mime-preview-condition nil
387 "Condition-tree about how to display entity.")
389 (ctree-set-calist-strictly
390 'mime-preview-condition '((type . application)(subtype . octet-stream)
393 (ctree-set-calist-strictly
394 'mime-preview-condition '((type . application)(subtype . octet-stream)
397 (ctree-set-calist-strictly
398 'mime-preview-condition '((type . application)(subtype . octet-stream)
402 (ctree-set-calist-strictly
403 'mime-preview-condition '((type . application)(subtype . pgp)
406 (ctree-set-calist-strictly
407 'mime-preview-condition '((type . application)(subtype . x-latex)
410 (ctree-set-calist-strictly
411 'mime-preview-condition '((type . application)(subtype . x-selection)
414 (ctree-set-calist-strictly
415 'mime-preview-condition '((type . application)(subtype . x-comment)
418 (ctree-set-calist-strictly
419 'mime-preview-condition '((type . message)(subtype . delivery-status)
422 (ctree-set-calist-strictly
423 'mime-preview-condition
425 (body-presentation-method . mime-display-text/plain)))
427 (ctree-set-calist-strictly
428 'mime-preview-condition
431 (body-presentation-method . mime-display-text/plain)))
433 (ctree-set-calist-strictly
434 'mime-preview-condition
435 '((type . text)(subtype . enriched)
437 (body-presentation-method . mime-display-text/enriched)))
439 (ctree-set-calist-strictly
440 'mime-preview-condition
441 '((type . text)(subtype . richtext)
443 (body-presentation-method . mime-display-text/richtext)))
445 (ctree-set-calist-strictly
446 'mime-preview-condition
447 '((type . text)(subtype . t)
449 (body-presentation-method . mime-display-text/plain)))
451 (ctree-set-calist-strictly
452 'mime-preview-condition
453 '((type . multipart)(subtype . alternative)
455 (body-presentation-method . mime-display-multipart/alternative)))
457 (ctree-set-calist-strictly
458 'mime-preview-condition '((type . message)(subtype . partial)
459 (body-presentation-method
460 . mime-display-message/partial-button)))
462 (ctree-set-calist-strictly
463 'mime-preview-condition '((type . message)(subtype . rfc822)
464 (body-presentation-method . nil)
465 (childrens-situation (header . visible)
466 (entity-button . invisible))))
468 (ctree-set-calist-strictly
469 'mime-preview-condition '((type . message)(subtype . news)
470 (body-presentation-method . nil)
471 (childrens-situation (header . visible)
472 (entity-button . invisible))))
475 ;;; @@@ entity presentation
478 (defun mime-display-text/plain (entity situation)
480 (narrow-to-region (point-max)(point-max))
481 (mime-insert-text-content entity)
482 (run-hooks 'mime-text-decode-hook)
483 (goto-char (point-max))
484 (if (not (eq (char-after (1- (point))) ?\n))
487 (mime-add-url-buttons)
488 (run-hooks 'mime-display-text/plain-hook)
491 (defun mime-display-text/richtext (entity situation)
493 (narrow-to-region (point-max)(point-max))
494 (mime-insert-text-content entity)
495 (run-hooks 'mime-text-decode-hook)
496 (let ((beg (point-min)))
497 (remove-text-properties beg (point-max) '(face nil))
498 (richtext-decode beg (point-max))
501 (defun mime-display-text/enriched (entity situation)
503 (narrow-to-region (point-max)(point-max))
504 (mime-insert-text-content entity)
505 (run-hooks 'mime-text-decode-hook)
506 (let ((beg (point-min)))
507 (remove-text-properties beg (point-max) '(face nil))
508 (enriched-decode beg (point-max))
511 (defvar mime-view-announcement-for-message/partial
512 (if (and (>= emacs-major-version 19) window-system)
514 \[[ This is message/partial style split message. ]]
515 \[[ Please press `v' key in this buffer ]]
516 \[[ or click here by mouse button-2. ]]"
518 \[[ This is message/partial style split message. ]]
519 \[[ Please press `v' key in this buffer. ]]"
522 (defun mime-display-message/partial-button (&optional entity situation)
524 (goto-char (point-max))
525 (if (not (search-backward "\n\n" nil t))
528 (goto-char (point-max))
529 (narrow-to-region (point-max)(point-max))
530 (insert mime-view-announcement-for-message/partial)
531 (mime-add-button (point-min)(point-max)
532 #'mime-preview-play-current-entity)
535 (defun mime-display-multipart/mixed (entity situation)
536 (let ((children (mime-entity-children entity))
538 (cdr (assq 'childrens-situation situation))))
540 (mime-display-entity (car children) nil default-situation)
541 (setq children (cdr children))
544 (defcustom mime-view-type-subtype-score-alist
545 '(((text . enriched) . 3)
546 ((text . richtext) . 2)
549 "Alist MEDIA-TYPE vs corresponding score.
550 MEDIA-TYPE must be (TYPE . SUBTYPE), TYPE or t. t means default."
552 :type '(repeat (cons (choice :tag "Media-Type"
553 (cons :tag "Type/Subtype"
554 (symbol :tag "Primary-type")
555 (symbol :tag "Subtype"))
557 (const :tag "Default" t))
560 (defun mime-display-multipart/alternative (entity situation)
561 (let* ((children (mime-entity-children entity))
563 (cdr (assq 'childrens-situation situation)))
571 (or (ctree-match-calist
572 mime-preview-condition
573 (append (mime-entity-situation child)
576 (if (cdr (assq 'body-presentation-method situation))
581 (cdr (assq 'type situation))
582 (cdr (assq 'subtype situation)))
583 mime-view-type-subtype-score-alist)
585 (cdr (assq 'type situation))
586 mime-view-type-subtype-score-alist)
589 mime-view-type-subtype-score-alist)
591 (if (> score max-score)
601 (let ((child (car children))
602 (situation (car situations)))
603 (mime-display-entity child (if (= i p)
605 (del-alist 'body-presentation-method
606 (copy-alist situation))))
608 (setq children (cdr children)
609 situations (cdr situations)
614 ;;; @ acting-condition
617 (defvar mime-acting-condition nil
618 "Condition-tree about how to process entity.")
620 (if (file-readable-p mailcap-file)
621 (let ((entries (mailcap-parse-file)))
623 (let ((entry (car entries))
626 (let* ((field (car entry))
627 (field-type (car field)))
628 (cond ((eq field-type 'view) (setq view field))
629 ((eq field-type 'print) (setq print field))
630 ((memq field-type '(compose composetyped edit)))
631 (t (setq shared (cons field shared))))
633 (setq entry (cdr entry))
635 (setq shared (nreverse shared))
636 (ctree-set-calist-with-default
637 'mime-acting-condition
638 (append shared (list '(mode . "play")(cons 'method (cdr view)))))
640 (ctree-set-calist-with-default
641 'mime-acting-condition
643 (list '(mode . "print")(cons 'method (cdr view))))
646 (setq entries (cdr entries))
649 (ctree-set-calist-strictly
650 'mime-acting-condition
651 '((type . application)(subtype . octet-stream)
653 (method . mime-detect-content)
656 (ctree-set-calist-with-default
657 'mime-acting-condition
659 (method . mime-save-content)))
661 (ctree-set-calist-strictly
662 'mime-acting-condition
663 '((type . text)(subtype . x-rot13-47)(mode . "play")
664 (method . mime-view-caesar)
666 (ctree-set-calist-strictly
667 'mime-acting-condition
668 '((type . text)(subtype . x-rot13-47-48)(mode . "play")
669 (method . mime-view-caesar)
672 (ctree-set-calist-strictly
673 'mime-acting-condition
674 '((type . message)(subtype . rfc822)(mode . "play")
675 (method . mime-view-message/rfc822)
677 (ctree-set-calist-strictly
678 'mime-acting-condition
679 '((type . message)(subtype . partial)(mode . "play")
680 (method . mime-store-message/partial-piece)
683 (ctree-set-calist-strictly
684 'mime-acting-condition
685 '((type . message)(subtype . external-body)
686 ("access-type" . "anon-ftp")
687 (method . mime-view-message/external-anon-ftp)
690 (ctree-set-calist-strictly
691 'mime-acting-condition
692 '((type . message)(subtype . external-body)
693 ("access-type" . "url")
694 (method . mime-view-message/external-url)
697 (ctree-set-calist-strictly
698 'mime-acting-condition
699 '((type . application)(subtype . octet-stream)
700 (method . mime-save-content)
704 ;;; @ quitting method
707 (defvar mime-preview-quitting-method-alist
708 '((mime-show-message-mode
709 . mime-preview-quitting-method-for-mime-show-message-mode))
710 "Alist of major-mode vs. quitting-method of mime-view.")
712 (defvar mime-preview-over-to-previous-method-alist nil
713 "Alist of major-mode vs. over-to-previous-method of mime-view.")
715 (defvar mime-preview-over-to-next-method-alist nil
716 "Alist of major-mode vs. over-to-next-method of mime-view.")
719 ;;; @ following method
722 (defvar mime-preview-following-method-alist nil
723 "Alist of major-mode vs. following-method of mime-view.")
725 (defvar mime-view-following-required-fields-list
732 (defun mime-display-entity (entity &optional situation
733 default-situation preview-buffer)
735 (setq preview-buffer (current-buffer)))
736 (let* ((raw-buffer (mime-entity-buffer entity))
737 (start (mime-entity-point-min entity))
739 (set-buffer raw-buffer)
743 (or (ctree-match-calist mime-preview-condition
744 (append (mime-entity-situation entity)
747 (let ((button-is-invisible
748 (eq (cdr (assq 'entity-button situation)) 'invisible))
750 (eq (cdr (assq 'header situation)) 'visible))
751 (header-presentation-method
752 (or (cdr (assq 'header-presentation-method situation))
753 (cdr (assq major-mode mime-header-presentation-method-alist))))
754 (body-presentation-method
755 (cdr (assq 'body-presentation-method situation)))
756 (children (mime-entity-children entity)))
757 (set-buffer preview-buffer)
759 (narrow-to-region nb nb)
760 (or button-is-invisible
761 (if (mime-view-entity-button-visible-p entity)
762 (mime-view-insert-entity-button entity)
764 (when header-is-visible
765 (if header-presentation-method
766 (funcall header-presentation-method entity situation)
767 (mime-insert-header entity
768 mime-view-ignored-field-list
769 mime-view-visible-field-list))
770 (goto-char (point-max))
772 (run-hooks 'mime-display-header-hook)
775 ((functionp body-presentation-method)
776 (funcall body-presentation-method entity situation)
779 (when button-is-invisible
780 (goto-char (point-max))
781 (mime-view-insert-entity-button entity)
783 (or header-is-visible
785 (goto-char (point-max))
789 (setq ne (point-max))
791 (put-text-property nb ne 'mime-view-entity entity)
794 (if (functionp body-presentation-method)
795 (funcall body-presentation-method entity situation)
796 (mime-display-multipart/mixed entity situation)
801 ;;; @ MIME viewer mode
804 (defconst mime-view-menu-title "MIME-View")
805 (defconst mime-view-menu-list
806 '((up "Move to upper entity" mime-preview-move-to-upper)
807 (previous "Move to previous entity" mime-preview-move-to-previous)
808 (next "Move to next entity" mime-preview-move-to-next)
809 (scroll-down "Scroll-down" mime-preview-scroll-down-entity)
810 (scroll-up "Scroll-up" mime-preview-scroll-up-entity)
811 (play "Play current entity" mime-preview-play-current-entity)
812 (extract "Extract current entity" mime-preview-extract-current-entity)
813 (print "Print current entity" mime-preview-print-current-entity)
815 "Menu for MIME Viewer")
817 (cond ((featurep 'xemacs)
818 (defvar mime-view-xemacs-popup-menu
819 (cons mime-view-menu-title
822 (vector (nth 1 item)(nth 2 item) t)
824 mime-view-menu-list)))
825 (defun mime-view-xemacs-popup-menu (event)
826 "Popup the menu in the MIME Viewer buffer"
828 (select-window (event-window event))
829 (set-buffer (event-buffer event))
830 (popup-menu 'mime-view-xemacs-popup-menu))
831 (defvar mouse-button-2 'button2)
834 (defvar mouse-button-2 [mouse-2])
837 (defun mime-view-define-keymap (&optional default)
838 (let ((mime-view-mode-map (if (keymapp default)
839 (copy-keymap default)
842 (define-key mime-view-mode-map
843 "u" (function mime-preview-move-to-upper))
844 (define-key mime-view-mode-map
845 "p" (function mime-preview-move-to-previous))
846 (define-key mime-view-mode-map
847 "n" (function mime-preview-move-to-next))
848 (define-key mime-view-mode-map
849 "\e\t" (function mime-preview-move-to-previous))
850 (define-key mime-view-mode-map
851 "\t" (function mime-preview-move-to-next))
852 (define-key mime-view-mode-map
853 " " (function mime-preview-scroll-up-entity))
854 (define-key mime-view-mode-map
855 "\M- " (function mime-preview-scroll-down-entity))
856 (define-key mime-view-mode-map
857 "\177" (function mime-preview-scroll-down-entity))
858 (define-key mime-view-mode-map
859 "\C-m" (function mime-preview-next-line-entity))
860 (define-key mime-view-mode-map
861 "\C-\M-m" (function mime-preview-previous-line-entity))
862 (define-key mime-view-mode-map
863 "v" (function mime-preview-play-current-entity))
864 (define-key mime-view-mode-map
865 "e" (function mime-preview-extract-current-entity))
866 (define-key mime-view-mode-map
867 "\C-c\C-p" (function mime-preview-print-current-entity))
868 (define-key mime-view-mode-map
869 "a" (function mime-preview-follow-current-entity))
870 (define-key mime-view-mode-map
871 "q" (function mime-preview-quit))
872 (define-key mime-view-mode-map
873 "\C-c\C-x" (function mime-preview-kill-buffer))
874 ;; (define-key mime-view-mode-map
875 ;; "<" (function beginning-of-buffer))
876 ;; (define-key mime-view-mode-map
877 ;; ">" (function end-of-buffer))
878 (define-key mime-view-mode-map
879 "?" (function describe-mode))
880 (define-key mime-view-mode-map
881 [tab] (function mime-preview-move-to-next))
882 (define-key mime-view-mode-map
883 [delete] (function mime-preview-scroll-down-entity))
884 (define-key mime-view-mode-map
885 [backspace] (function mime-preview-scroll-down-entity))
886 (if (functionp default)
887 (cond ((featurep 'xemacs)
888 (set-keymap-default-binding mime-view-mode-map default)
891 (setq mime-view-mode-map
892 (append mime-view-mode-map (list (cons t default))))
895 (define-key mime-view-mode-map
896 mouse-button-2 (function mime-button-dispatcher))
898 (cond ((featurep 'xemacs)
899 (define-key mime-view-mode-map
900 mouse-button-3 (function mime-view-xemacs-popup-menu))
902 ((>= emacs-major-version 19)
903 (define-key mime-view-mode-map [menu-bar mime-view]
904 (cons mime-view-menu-title
905 (make-sparse-keymap mime-view-menu-title)))
908 (define-key mime-view-mode-map
909 (vector 'menu-bar 'mime-view (car item))
910 (cons (nth 1 item)(nth 2 item))
913 (reverse mime-view-menu-list)
916 (use-local-map mime-view-mode-map)
917 (run-hooks 'mime-view-define-keymap-hook)
920 (defsubst mime-maybe-hide-echo-buffer ()
921 "Clear mime-echo buffer and delete window for it."
922 (let ((buf (get-buffer mime-echo-buffer-name)))
927 (let ((win (get-buffer-window buf)))
934 (defvar mime-view-redisplay nil)
937 (defun mime-display-message (message &optional preview-buffer
938 mother default-keymap-or-function)
939 "View MESSAGE in MIME-View mode.
941 Optional argument PREVIEW-BUFFER specifies the buffer of the
942 presentation. It must be either nil or a name of preview buffer.
944 Optional argument MOTHER specifies mother-buffer of the preview-buffer.
946 Optional argument DEFAULT-KEYMAP-OR-FUNCTION is nil, keymap or
947 function. If it is a keymap, keymap of MIME-View mode will be added
948 to it. If it is a function, it will be bound as default binding of
949 keymap of MIME-View mode."
950 (mime-maybe-hide-echo-buffer)
951 (let ((win-conf (current-window-configuration))
952 (raw-buffer (mime-entity-buffer message)))
955 (concat "*Preview-" (buffer-name raw-buffer) "*")))
956 (set-buffer raw-buffer)
957 (setq mime-preview-buffer preview-buffer)
958 (let ((inhibit-read-only t))
959 (set-buffer (get-buffer-create preview-buffer))
962 (setq mime-raw-buffer raw-buffer)
964 (setq mime-mother-buffer mother)
966 (setq mime-preview-original-window-configuration win-conf)
967 (setq major-mode 'mime-view-mode)
968 (setq mode-name "MIME-View")
969 (mime-display-entity message nil
970 '((entity-button . invisible)
973 (mime-view-define-keymap default-keymap-or-function)
975 (next-single-property-change (point-min) 'mime-view-entity)))
978 (goto-char (point-min))
979 (search-forward "\n\n" nil t)
981 (run-hooks 'mime-view-mode-hook)
982 (set-buffer-modified-p nil)
983 (setq buffer-read-only t)
984 (or (get-buffer-window preview-buffer)
985 (let ((r-win (get-buffer-window raw-buffer)))
987 (set-window-buffer r-win preview-buffer)
988 (let ((m-win (and mother (get-buffer-window mother))))
990 (set-window-buffer m-win preview-buffer)
991 (switch-to-buffer preview-buffer)
996 (defun mime-view-buffer (&optional raw-buffer preview-buffer mother
997 default-keymap-or-function
999 "View RAW-BUFFER in MIME-View mode.
1000 Optional argument PREVIEW-BUFFER is either nil or a name of preview
1002 Optional argument DEFAULT-KEYMAP-OR-FUNCTION is nil, keymap or
1003 function. If it is a keymap, keymap of MIME-View mode will be added
1004 to it. If it is a function, it will be bound as default binding of
1005 keymap of MIME-View mode.
1006 Optional argument REPRESENTATION-TYPE is representation-type of
1007 message. It must be nil, `binary' or `cooked'. If it is nil,
1008 `cooked' is used as default."
1011 (setq raw-buffer (current-buffer)))
1012 (or representation-type
1013 (setq representation-type
1015 (set-buffer raw-buffer)
1016 (cdr (or (assq major-mode mime-raw-representation-type-alist)
1017 (assq t mime-raw-representation-type-alist)))
1019 (if (eq representation-type 'binary)
1020 (setq representation-type 'buffer)
1022 (mime-display-message
1023 (mime-open-entity representation-type raw-buffer)
1024 preview-buffer mother default-keymap-or-function))
1026 (defun mime-view-mode (&optional mother ctl encoding
1027 raw-buffer preview-buffer
1028 default-keymap-or-function)
1029 "Major mode for viewing MIME message.
1031 Here is a list of the standard keys for mime-view-mode.
1036 u Move to upper content
1037 p or M-TAB Move to previous content
1038 n or TAB Move to next content
1039 SPC Scroll up or move to next content
1040 M-SPC or DEL Scroll down or move to previous content
1041 RET Move to next line
1042 M-RET Move to previous line
1043 v Decode current content as `play mode'
1044 e Decode current content as `extract mode'
1045 C-c C-p Decode current content as `print mode'
1046 a Followup to current content.
1048 button-2 Move to point under the mouse cursor
1049 and decode current content as `play mode'
1052 (unless mime-view-redisplay
1054 (if raw-buffer (set-buffer raw-buffer))
1057 (or (assq major-mode mime-raw-representation-type-alist)
1058 (assq t mime-raw-representation-type-alist)))))
1059 (if (eq type 'binary)
1062 (setq mime-message-structure (mime-open-entity type raw-buffer))
1063 (or (mime-entity-content-type mime-message-structure)
1064 (mime-entity-set-content-type-internal
1065 mime-message-structure ctl))
1067 (or (mime-entity-encoding mime-message-structure)
1068 (mime-entity-set-encoding-internal mime-message-structure encoding))
1070 (mime-display-message mime-message-structure preview-buffer
1071 mother default-keymap-or-function)
1078 (autoload 'mime-preview-play-current-entity "mime-play"
1079 "Play current entity." t)
1081 (defun mime-preview-extract-current-entity (&optional ignore-examples)
1082 "Extract current entity into file (maybe).
1083 It decodes current entity to call internal or external method as
1084 \"extract\" mode. The method is selected from variable
1085 `mime-acting-condition'."
1087 (mime-preview-play-current-entity ignore-examples "extract")
1090 (defun mime-preview-print-current-entity (&optional ignore-examples)
1091 "Print current entity (maybe).
1092 It decodes current entity to call internal or external method as
1093 \"print\" mode. The method is selected from variable
1094 `mime-acting-condition'."
1096 (mime-preview-play-current-entity ignore-examples "print")
1103 (defun mime-preview-follow-current-entity ()
1104 "Write follow message to current entity.
1105 It calls following-method selected from variable
1106 `mime-preview-following-method-alist'."
1109 (while (null (setq entity
1110 (get-text-property (point) 'mime-view-entity)))
1114 (previous-single-property-change (point) 'mime-view-entity))
1116 (entity-node-id (mime-entity-node-id entity))
1117 (len (length entity-node-id))
1121 (if (eq (next-single-property-change (point-min)
1127 ((eq (next-single-property-change p-beg 'mime-view-entity)
1129 (setq p-beg (point))
1131 (setq p-end (next-single-property-change p-beg 'mime-view-entity))
1133 (setq p-end (point-max))
1135 ((null entity-node-id)
1136 (setq p-end (point-max))
1144 (next-single-property-change
1145 (point) 'mime-view-entity))
1147 (let ((rc (mime-entity-node-id
1148 (get-text-property (point)
1149 'mime-view-entity))))
1150 (or (equal entity-node-id
1151 (nthcdr (- (length rc) len) rc))
1156 (setq p-end (point-max))
1159 (let* ((mode (mime-preview-original-major-mode 'recursive))
1161 (format "%s-%s" (buffer-name) (reverse entity-node-id)))
1163 (the-buf (current-buffer))
1164 (a-buf mime-raw-buffer)
1167 (set-buffer (setq new-buf (get-buffer-create new-name)))
1169 (insert-buffer-substring the-buf p-beg p-end)
1170 (goto-char (point-min))
1171 (let ((entity-node-id (mime-entity-node-id entity)) ci str)
1178 (mime-find-entity-from-node-id entity-node-id))
1181 (mime-entity-point-min ci)
1182 (mime-entity-point-max ci)
1184 (std11-header-string-except
1186 (apply (function regexp-or) fields)
1188 (if (or (null entity-node-id)
1190 (eq (mime-entity-media-type ci) 'message)
1191 (eq (mime-entity-media-subtype ci) 'rfc822)))
1197 (setq fields (std11-collect-field-names)
1198 entity-node-id (cdr entity-node-id))
1201 (let ((rest mime-view-following-required-fields-list))
1203 (let ((field-name (car rest)))
1204 (or (std11-field-body field-name)
1210 (set-buffer the-buf)
1211 (set-buffer mime-mother-buffer)
1212 (set-buffer mime-raw-buffer)
1213 (std11-field-body field-name)
1217 (setq rest (cdr rest))
1219 (mime-decode-header-in-buffer)
1221 (let ((f (cdr (assq mode mime-preview-following-method-alist))))
1226 "Sorry, following method for %s is not implemented yet."
1235 (defun mime-preview-move-to-upper ()
1236 "Move to upper entity.
1237 If there is no upper entity, call function `mime-preview-quit'."
1240 (while (null (setq cinfo
1241 (get-text-property (point) 'mime-view-entity)))
1244 (let ((r (mime-entity-parent cinfo))
1247 (while (setq point (previous-single-property-change
1248 (point) 'mime-view-entity))
1250 (if (eq r (get-text-property (point) 'mime-view-entity))
1257 (defun mime-preview-move-to-previous ()
1258 "Move to previous entity.
1259 If there is no previous entity, it calls function registered in
1260 variable `mime-preview-over-to-previous-method-alist'."
1262 (while (null (get-text-property (point) 'mime-view-entity))
1265 (let ((point (previous-single-property-change (point) 'mime-view-entity)))
1267 (if (get-text-property (1- point) 'mime-view-entity)
1269 (goto-char (1- point))
1270 (mime-preview-move-to-previous)
1272 (let ((f (assq (mime-preview-original-major-mode)
1273 mime-preview-over-to-previous-method-alist)))
1279 (defun mime-preview-move-to-next ()
1280 "Move to next entity.
1281 If there is no previous entity, it calls function registered in
1282 variable `mime-preview-over-to-next-method-alist'."
1284 (while (and (not (eobp))
1285 (null (get-text-property (point) 'mime-view-entity)))
1288 (let ((point (next-single-property-change (point) 'mime-view-entity)))
1292 (if (null (get-text-property point 'mime-view-entity))
1293 (mime-preview-move-to-next)
1295 (let ((f (assq (mime-preview-original-major-mode)
1296 mime-preview-over-to-next-method-alist)))
1302 (defun mime-preview-scroll-up-entity (&optional h)
1303 "Scroll up current entity.
1304 If reached to (point-max), it calls function registered in variable
1305 `mime-preview-over-to-next-method-alist'."
1308 (setq h (1- (window-height)))
1310 (if (= (point) (point-max))
1311 (let ((f (assq (mime-preview-original-major-mode)
1312 mime-preview-over-to-next-method-alist)))
1317 (or (next-single-property-change (point) 'mime-view-entity)
1320 (if (> (point) point)
1325 (defun mime-preview-scroll-down-entity (&optional h)
1326 "Scroll down current entity.
1327 If reached to (point-min), it calls function registered in variable
1328 `mime-preview-over-to-previous-method-alist'."
1331 (setq h (1- (window-height)))
1333 (if (= (point) (point-min))
1334 (let ((f (assq (mime-preview-original-major-mode)
1335 mime-preview-over-to-previous-method-alist)))
1340 (or (previous-single-property-change (point) 'mime-view-entity)
1342 (forward-line (- h))
1343 (if (< (point) point)
1347 (defun mime-preview-next-line-entity ()
1349 (mime-preview-scroll-up-entity 1)
1352 (defun mime-preview-previous-line-entity ()
1354 (mime-preview-scroll-down-entity 1)
1361 (defun mime-preview-quit ()
1362 "Quit from MIME-preview buffer.
1363 It calls function registered in variable
1364 `mime-preview-quitting-method-alist'."
1366 (let ((r (assq (mime-preview-original-major-mode)
1367 mime-preview-quitting-method-alist)))
1372 (defun mime-preview-kill-buffer ()
1374 (kill-buffer (current-buffer))
1381 (provide 'mime-view)
1383 (run-hooks 'mime-view-load-hook)
1385 ;;; mime-view.el ends here