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 nil
74 "Representation-type of mime-raw-buffer.
75 It must be nil, `binary' or `cooked'.
76 If it is nil, `mime-raw-representation-type-alist' is used as default
78 Notice that this variable is usually used as buffer local variable in
81 (make-variable-buffer-local 'mime-raw-representation-type)
83 (defvar mime-raw-representation-type-alist
84 '((mime-show-message-mode . binary)
85 (mime-temp-message-mode . binary)
88 "Alist of major-mode vs. representation-type of mime-raw-buffer.
89 Each element looks like (SYMBOL . REPRESENTATION-TYPE). SYMBOL is
90 major-mode or t. t means default. REPRESENTATION-TYPE must be
92 This value is overridden by buffer local variable
93 `mime-raw-representation-type' if it is not nil.")
96 (defsubst mime-raw-find-entity-from-node-id (entity-node-id
97 &optional message-info)
98 "Return entity from ENTITY-NODE-ID in mime-raw-buffer.
99 If optional argument MESSAGE-INFO is not specified,
100 `mime-message-structure' is used."
101 (mime-raw-find-entity-from-number (reverse entity-node-id) message-info))
103 (defun mime-raw-find-entity-from-number (entity-number &optional message-info)
104 "Return entity from ENTITY-NUMBER in mime-raw-buffer.
105 If optional argument MESSAGE-INFO is not specified,
106 `mime-message-structure' is used."
108 (setq message-info mime-message-structure))
109 (if (eq entity-number t)
111 (let ((sn (car entity-number)))
114 (let ((rc (nth sn (mime-entity-children message-info))))
116 (mime-raw-find-entity-from-number (cdr entity-number) rc)
120 (defun mime-raw-find-entity-from-point (point &optional message-info)
121 "Return entity from POINT in mime-raw-buffer.
122 If optional argument MESSAGE-INFO is not specified,
123 `mime-message-structure' is used."
125 (setq message-info mime-message-structure))
126 (if (and (<= (mime-entity-point-min message-info) point)
127 (<= point (mime-entity-point-max message-info)))
128 (let ((children (mime-entity-children message-info)))
132 (mime-raw-find-entity-from-point point (car children))))
136 (setq children (cdr children)))
140 ;;; @ in preview-buffer (presentation space)
143 (defvar mime-mother-buffer nil
144 "Mother buffer corresponding with the (MIME-preview) buffer.
145 If current MIME-preview buffer is generated by other buffer, such as
146 message/partial, it is called `mother-buffer'.")
147 (make-variable-buffer-local 'mime-mother-buffer)
149 (defvar mime-raw-buffer nil
150 "Raw buffer corresponding with the (MIME-preview) buffer.")
151 (make-variable-buffer-local 'mime-raw-buffer)
153 (defvar mime-preview-original-window-configuration nil
154 "Window-configuration before mime-view-mode is called.")
155 (make-variable-buffer-local 'mime-preview-original-window-configuration)
157 (defun mime-preview-original-major-mode (&optional recursive)
158 "Return major-mode of original buffer.
159 If optional argument RECURSIVE is non-nil and current buffer has
160 mime-mother-buffer, it returns original major-mode of the
162 (if (and recursive mime-mother-buffer)
164 (set-buffer mime-mother-buffer)
165 (mime-preview-original-major-mode recursive)
170 (get-text-property (point-min) 'mime-view-entity)))
174 ;;; @ entity information
177 (defsubst mime-entity-representation-type (entity)
178 (with-current-buffer (mime-entity-buffer entity)
179 (or mime-raw-representation-type
180 (cdr (or (assq major-mode mime-raw-representation-type-alist)
181 (assq t mime-raw-representation-type-alist))))))
183 (defsubst mime-entity-cooked-p (entity)
184 (eq (mime-entity-representation-type entity) 'cooked))
186 (defsubst mime-entity-parent (entity &optional message-info)
187 "Return mother entity of ENTITY.
188 If optional argument MESSAGE-INFO is not specified,
189 `mime-message-structure' in buffer of ENTITY is used."
190 (mime-raw-find-entity-from-node-id
191 (cdr (mime-entity-node-id entity))
194 (set-buffer (mime-entity-buffer entity))
195 mime-message-structure))))
197 (defun mime-entity-situation (entity)
198 "Return situation of ENTITY."
199 (append (or (mime-entity-content-type entity)
200 (make-mime-content-type 'text 'plain))
201 (let ((d (mime-entity-content-disposition entity)))
202 (cons (cons 'disposition-type
203 (mime-content-disposition-type d))
206 (let ((name (car param)))
207 (cons (cond ((string= name "filename")
209 ((string= name "creation-date")
211 ((string= name "modification-date")
213 ((string= name "read-date")
215 ((string= name "size")
217 (t (cons 'disposition (car param))))
219 (mime-content-disposition-parameters d))
221 (list (cons 'encoding (mime-entity-encoding entity))
224 (set-buffer (mime-entity-buffer entity))
229 (defvar mime-view-uuencode-encoding-name-list '("x-uue" "x-uuencode"))
231 (defun mime-entity-uu-filename (entity)
232 (if (member (mime-entity-encoding entity)
233 mime-view-uuencode-encoding-name-list)
235 (set-buffer (mime-entity-buffer entity))
236 (goto-char (mime-entity-body-start entity))
237 (if (re-search-forward "^begin [0-9]+ "
238 (mime-entity-body-end entity) t)
239 (if (looking-at ".+$")
240 (buffer-substring (match-beginning 0)(match-end 0))
243 (defun mime-entity-filename (entity)
244 (or (mime-entity-uu-filename entity)
245 (mime-content-disposition-filename
246 (mime-entity-content-disposition entity))
247 (cdr (let ((param (mime-content-type-parameters
248 (mime-entity-content-type entity))))
249 (or (assoc "name" param)
250 (assoc "x-name" param))
253 (defun mime-view-entity-title (entity)
254 (or (mime-read-field 'Content-Description entity)
255 (mime-read-field 'Subject entity)
256 (mime-entity-filename entity)
260 (defsubst mime-raw-point-to-entity-node-id (point &optional message-info)
261 "Return entity-node-id from POINT in mime-raw-buffer.
262 If optional argument MESSAGE-INFO is not specified,
263 `mime-message-structure' is used."
264 (mime-entity-node-id (mime-raw-find-entity-from-point point message-info)))
266 (defsubst mime-raw-point-to-entity-number (point &optional message-info)
267 "Return entity-number from POINT in mime-raw-buffer.
268 If optional argument MESSAGE-INFO is not specified,
269 `mime-message-structure' is used."
270 (mime-entity-number (mime-raw-find-entity-from-point point message-info)))
272 (defun mime-raw-flatten-message-info (&optional message-info)
273 "Return list of entity in mime-raw-buffer.
274 If optional argument MESSAGE-INFO is not specified,
275 `mime-message-structure' is used."
277 (setq message-info mime-message-structure))
278 (let ((dest (list message-info))
279 (rcl (mime-entity-children message-info)))
281 (setq dest (nconc dest (mime-raw-flatten-message-info (car rcl))))
282 (setq rcl (cdr rcl)))
286 ;;; @ presentation of preview
292 ;;; @@@ predicate function
295 (defun mime-view-entity-button-visible-p (entity)
296 "Return non-nil if header of ENTITY is visible.
297 Please redefine this function if you want to change default setting."
298 (let ((media-type (mime-entity-media-type entity))
299 (media-subtype (mime-entity-media-subtype entity)))
300 (or (not (eq media-type 'application))
301 (and (not (eq media-subtype 'x-selection))
302 (or (not (eq media-subtype 'octet-stream))
303 (let ((mother-entity (mime-entity-parent entity)))
304 (or (not (eq (mime-entity-media-type mother-entity)
306 (not (eq (mime-entity-media-subtype mother-entity)
311 ;;; @@@ entity button generator
314 (defun mime-view-insert-entity-button (entity)
315 "Insert entity-button of ENTITY."
316 (let ((entity-node-id (mime-entity-node-id entity))
317 (params (mime-entity-parameters entity))
318 (subject (mime-view-entity-title entity)))
320 (let ((access-type (assoc "access-type" params))
321 (num (or (cdr (assoc "x-part-number" params))
322 (if (consp entity-node-id)
325 (format "%s" (1+ num))
327 (reverse entity-node-id) ".")
331 (let ((server (assoc "server" params)))
332 (setq access-type (cdr access-type))
334 (format "%s %s ([%s] %s)"
335 num subject access-type (cdr server))
336 (let ((site (cdr (assoc "site" params)))
337 (dir (cdr (assoc "directory" params)))
339 (format "%s %s ([%s] %s:%s)"
340 num subject access-type site dir)
344 (let ((media-type (mime-entity-media-type entity))
345 (media-subtype (mime-entity-media-subtype entity))
346 (charset (cdr (assoc "charset" params)))
347 (encoding (mime-entity-encoding entity)))
351 (format " <%s/%s%s%s>"
352 media-type media-subtype
354 (concat "; " charset)
357 (concat " (" encoding ")")
359 (if (>= (+ (current-column)(length rest))(window-width))
363 (function mime-preview-play-current-entity))
370 (defvar mime-header-presentation-method-alist nil
371 "Alist of major mode vs. corresponding header-presentation-method functions.
372 Each element looks like (SYMBOL . FUNCTION).
373 SYMBOL must be major mode in raw-buffer or t. t means default.
374 Interface of FUNCTION must be (ENTITY SITUATION).")
376 (defvar mime-view-ignored-field-list
377 '(".*Received" ".*Path" ".*Id" "References"
378 "Replied" "Errors-To"
379 "Lines" "Sender" ".*Host" "Xref"
380 "Content-Type" "Precedence"
382 "All fields that match this list will be hidden in MIME preview buffer.
383 Each elements are regexp of field-name.")
385 (defvar mime-view-visible-field-list '("Dnas.*" "Message-Id")
386 "All fields that match this list will be displayed in MIME preview buffer.
387 Each elements are regexp of field-name.")
393 ;;; @@@ predicate function
396 (defun mime-calist::field-match-method-as-default-rule (calist
397 field-type field-value)
398 (let ((s-field (assq field-type calist)))
399 (cond ((null s-field)
400 (cons (cons field-type field-value) calist)
404 (define-calist-field-match-method
405 'header #'mime-calist::field-match-method-as-default-rule)
407 (define-calist-field-match-method
408 'body #'mime-calist::field-match-method-as-default-rule)
411 (defvar mime-preview-condition nil
412 "Condition-tree about how to display entity.")
414 (ctree-set-calist-strictly
415 'mime-preview-condition '((type . application)(subtype . octet-stream)
418 (ctree-set-calist-strictly
419 'mime-preview-condition '((type . application)(subtype . octet-stream)
422 (ctree-set-calist-strictly
423 'mime-preview-condition '((type . application)(subtype . octet-stream)
427 (ctree-set-calist-strictly
428 'mime-preview-condition '((type . application)(subtype . pgp)
431 (ctree-set-calist-strictly
432 'mime-preview-condition '((type . application)(subtype . x-latex)
435 (ctree-set-calist-strictly
436 'mime-preview-condition '((type . application)(subtype . x-selection)
439 (ctree-set-calist-strictly
440 'mime-preview-condition '((type . application)(subtype . x-comment)
443 (ctree-set-calist-strictly
444 'mime-preview-condition '((type . message)(subtype . delivery-status)
447 (ctree-set-calist-strictly
448 'mime-preview-condition
450 (body-presentation-method . mime-display-text/plain)))
452 (ctree-set-calist-strictly
453 'mime-preview-condition
456 (body-presentation-method . mime-display-text/plain)))
458 (ctree-set-calist-strictly
459 'mime-preview-condition
460 '((type . text)(subtype . enriched)
462 (body-presentation-method . mime-display-text/enriched)))
464 (ctree-set-calist-strictly
465 'mime-preview-condition
466 '((type . text)(subtype . richtext)
468 (body-presentation-method . mime-display-text/richtext)))
470 (ctree-set-calist-strictly
471 'mime-preview-condition
472 '((type . text)(subtype . t)
474 (body-presentation-method . mime-display-text/plain)))
476 (ctree-set-calist-strictly
477 'mime-preview-condition
478 '((type . multipart)(subtype . alternative)
480 (body-presentation-method . mime-display-multipart/alternative)))
482 (ctree-set-calist-strictly
483 'mime-preview-condition '((type . message)(subtype . partial)
484 (body-presentation-method
485 . mime-display-message/partial-button)))
487 (ctree-set-calist-strictly
488 'mime-preview-condition '((type . message)(subtype . rfc822)
489 (body-presentation-method . nil)
490 (childrens-situation (header . visible)
491 (entity-button . invisible))))
493 (ctree-set-calist-strictly
494 'mime-preview-condition '((type . message)(subtype . news)
495 (body-presentation-method . nil)
496 (childrens-situation (header . visible)
497 (entity-button . invisible))))
500 ;;; @@@ entity presentation
503 (autoload 'mime-display-text/plain "mime-text")
504 (autoload 'mime-display-text/enriched "mime-text")
505 (autoload 'mime-display-text/richtext "mime-text")
507 (defvar mime-view-announcement-for-message/partial
508 (if (and (>= emacs-major-version 19) window-system)
510 \[[ This is message/partial style split message. ]]
511 \[[ Please press `v' key in this buffer ]]
512 \[[ or click here by mouse button-2. ]]"
514 \[[ This is message/partial style split message. ]]
515 \[[ Please press `v' key in this buffer. ]]"
518 (defun mime-display-message/partial-button (&optional entity situation)
520 (goto-char (point-max))
521 (if (not (search-backward "\n\n" nil t))
524 (goto-char (point-max))
525 (narrow-to-region (point-max)(point-max))
526 (insert mime-view-announcement-for-message/partial)
527 (mime-add-button (point-min)(point-max)
528 #'mime-preview-play-current-entity)
531 (defun mime-display-multipart/mixed (entity situation)
532 (let ((children (mime-entity-children entity))
534 (cdr (assq 'childrens-situation situation))))
536 (mime-display-entity (car children) nil default-situation)
537 (setq children (cdr children))
540 (defcustom mime-view-type-subtype-score-alist
541 '(((text . enriched) . 3)
542 ((text . richtext) . 2)
545 "Alist MEDIA-TYPE vs corresponding score.
546 MEDIA-TYPE must be (TYPE . SUBTYPE), TYPE or t. t means default."
548 :type '(repeat (cons (choice :tag "Media-Type"
549 (item :tag "Type/Subtype"
550 (cons symbol symbol))
551 (item :tag "Type" symbol)
552 (item :tag "Default" t))
555 (defun mime-display-multipart/alternative (entity situation)
556 (let* ((children (mime-entity-children entity))
558 (cdr (assq 'childrens-situation situation)))
566 (or (ctree-match-calist
567 mime-preview-condition
568 (append (mime-entity-situation child)
571 (if (cdr (assq 'body-presentation-method situation))
576 (cdr (assq 'type situation))
577 (cdr (assq 'subtype situation)))
578 mime-view-type-subtype-score-alist)
580 (cdr (assq 'type situation))
581 mime-view-type-subtype-score-alist)
584 mime-view-type-subtype-score-alist)
586 (if (> score max-score)
596 (let ((child (car children))
597 (situation (car situations)))
598 (mime-display-entity child (if (= i p)
600 (del-alist 'body-presentation-method
601 (copy-alist situation))))
603 (setq children (cdr children)
604 situations (cdr situations)
609 ;;; @ acting-condition
612 (defvar mime-acting-condition nil
613 "Condition-tree about how to process entity.")
615 (if (file-readable-p mailcap-file)
616 (let ((entries (mailcap-parse-file)))
618 (let ((entry (car entries))
621 (let* ((field (car entry))
622 (field-type (car field)))
623 (cond ((eq field-type 'view) (setq view field))
624 ((eq field-type 'print) (setq print field))
625 ((memq field-type '(compose composetyped edit)))
626 (t (setq shared (cons field shared))))
628 (setq entry (cdr entry))
630 (setq shared (nreverse shared))
631 (ctree-set-calist-with-default
632 'mime-acting-condition
633 (append shared (list '(mode . "play")(cons 'method (cdr view)))))
635 (ctree-set-calist-with-default
636 'mime-acting-condition
638 (list '(mode . "print")(cons 'method (cdr view))))
641 (setq entries (cdr entries))
644 (ctree-set-calist-strictly
645 'mime-acting-condition
646 '((type . application)(subtype . octet-stream)
648 (method . mime-detect-content)
651 (ctree-set-calist-with-default
652 'mime-acting-condition
654 (method . mime-save-content)))
656 (ctree-set-calist-strictly
657 'mime-acting-condition
658 '((type . text)(subtype . x-rot13-47)(mode . "play")
659 (method . mime-view-caesar)
661 (ctree-set-calist-strictly
662 'mime-acting-condition
663 '((type . text)(subtype . x-rot13-47-48)(mode . "play")
664 (method . mime-view-caesar)
667 (ctree-set-calist-strictly
668 'mime-acting-condition
669 '((type . message)(subtype . rfc822)(mode . "play")
670 (method . mime-view-message/rfc822)
672 (ctree-set-calist-strictly
673 'mime-acting-condition
674 '((type . message)(subtype . partial)(mode . "play")
675 (method . mime-store-message/partial-piece)
678 (ctree-set-calist-strictly
679 'mime-acting-condition
680 '((type . message)(subtype . external-body)
681 ("access-type" . "anon-ftp")
682 (method . mime-view-message/external-ftp)
685 (ctree-set-calist-strictly
686 'mime-acting-condition
687 '((type . application)(subtype . octet-stream)
688 (method . mime-save-content)
692 ;;; @ quitting method
695 (defvar mime-preview-quitting-method-alist
696 '((mime-show-message-mode
697 . mime-preview-quitting-method-for-mime-show-message-mode))
698 "Alist of major-mode vs. quitting-method of mime-view.")
700 (defvar mime-preview-over-to-previous-method-alist nil
701 "Alist of major-mode vs. over-to-previous-method of mime-view.")
703 (defvar mime-preview-over-to-next-method-alist nil
704 "Alist of major-mode vs. over-to-next-method of mime-view.")
707 ;;; @ following method
710 (defvar mime-preview-following-method-alist nil
711 "Alist of major-mode vs. following-method of mime-view.")
713 (defvar mime-view-following-required-fields-list
720 (defun mime-display-entity (entity &optional situation
721 default-situation preview-buffer)
723 (setq preview-buffer (current-buffer)))
724 (let* ((raw-buffer (mime-entity-buffer entity))
725 (start (mime-entity-point-min entity))
727 (set-buffer raw-buffer)
731 (or (ctree-match-calist mime-preview-condition
732 (append (mime-entity-situation entity)
735 (let ((button-is-invisible
736 (eq (cdr (assq 'entity-button situation)) 'invisible))
738 (eq (cdr (assq 'header situation)) 'visible))
739 (header-presentation-method
740 (or (cdr (assq 'header-presentation-method situation))
741 (cdr (assq major-mode mime-header-presentation-method-alist))))
742 (body-presentation-method
743 (cdr (assq 'body-presentation-method situation)))
744 (children (mime-entity-children entity)))
745 (set-buffer preview-buffer)
747 (narrow-to-region nb nb)
748 (or button-is-invisible
749 (if (mime-view-entity-button-visible-p entity)
750 (mime-view-insert-entity-button entity)
752 (when header-is-visible
753 (if header-presentation-method
754 (funcall header-presentation-method entity situation)
755 (mime-insert-decoded-header entity
756 mime-view-ignored-field-list
757 mime-view-visible-field-list
758 (if (mime-entity-cooked-p entity)
760 default-mime-charset))
762 (goto-char (point-max))
764 (run-hooks 'mime-display-header-hook)
767 ((functionp body-presentation-method)
768 (funcall body-presentation-method entity situation)
771 (when button-is-invisible
772 (goto-char (point-max))
773 (mime-view-insert-entity-button entity)
775 (or header-is-visible
777 (goto-char (point-max))
781 (setq ne (point-max))
783 (put-text-property nb ne 'mime-view-entity entity)
786 (if (functionp body-presentation-method)
787 (funcall body-presentation-method entity situation)
788 (mime-display-multipart/mixed entity situation)
793 ;;; @ MIME viewer mode
796 (defconst mime-view-menu-title "MIME-View")
797 (defconst mime-view-menu-list
798 '((up "Move to upper entity" mime-preview-move-to-upper)
799 (previous "Move to previous entity" mime-preview-move-to-previous)
800 (next "Move to next entity" mime-preview-move-to-next)
801 (scroll-down "Scroll-down" mime-preview-scroll-down-entity)
802 (scroll-up "Scroll-up" mime-preview-scroll-up-entity)
803 (play "Play current entity" mime-preview-play-current-entity)
804 (extract "Extract current entity" mime-preview-extract-current-entity)
805 (print "Print current entity" mime-preview-print-current-entity)
807 "Menu for MIME Viewer")
809 (cond (running-xemacs
810 (defvar mime-view-xemacs-popup-menu
811 (cons mime-view-menu-title
814 (vector (nth 1 item)(nth 2 item) t)
816 mime-view-menu-list)))
817 (defun mime-view-xemacs-popup-menu (event)
818 "Popup the menu in the MIME Viewer buffer"
820 (select-window (event-window event))
821 (set-buffer (event-buffer event))
822 (popup-menu 'mime-view-xemacs-popup-menu))
823 (defvar mouse-button-2 'button2)
826 (defvar mouse-button-2 [mouse-2])
829 (defun mime-view-define-keymap (&optional default)
830 (let ((mime-view-mode-map (if (keymapp default)
831 (copy-keymap default)
834 (define-key mime-view-mode-map
835 "u" (function mime-preview-move-to-upper))
836 (define-key mime-view-mode-map
837 "p" (function mime-preview-move-to-previous))
838 (define-key mime-view-mode-map
839 "n" (function mime-preview-move-to-next))
840 (define-key mime-view-mode-map
841 "\e\t" (function mime-preview-move-to-previous))
842 (define-key mime-view-mode-map
843 "\t" (function mime-preview-move-to-next))
844 (define-key mime-view-mode-map
845 " " (function mime-preview-scroll-up-entity))
846 (define-key mime-view-mode-map
847 "\M- " (function mime-preview-scroll-down-entity))
848 (define-key mime-view-mode-map
849 "\177" (function mime-preview-scroll-down-entity))
850 (define-key mime-view-mode-map
851 "\C-m" (function mime-preview-next-line-entity))
852 (define-key mime-view-mode-map
853 "\C-\M-m" (function mime-preview-previous-line-entity))
854 (define-key mime-view-mode-map
855 "v" (function mime-preview-play-current-entity))
856 (define-key mime-view-mode-map
857 "e" (function mime-preview-extract-current-entity))
858 (define-key mime-view-mode-map
859 "\C-c\C-p" (function mime-preview-print-current-entity))
860 (define-key mime-view-mode-map
861 "a" (function mime-preview-follow-current-entity))
862 (define-key mime-view-mode-map
863 "q" (function mime-preview-quit))
864 (define-key mime-view-mode-map
865 "\C-c\C-x" (function mime-preview-kill-buffer))
866 ;; (define-key mime-view-mode-map
867 ;; "<" (function beginning-of-buffer))
868 ;; (define-key mime-view-mode-map
869 ;; ">" (function end-of-buffer))
870 (define-key mime-view-mode-map
871 "?" (function describe-mode))
872 (define-key mime-view-mode-map
873 [tab] (function mime-preview-move-to-next))
874 (define-key mime-view-mode-map
875 [delete] (function mime-preview-scroll-down-entity))
876 (define-key mime-view-mode-map
877 [backspace] (function mime-preview-scroll-down-entity))
878 (if (functionp default)
879 (cond (running-xemacs
880 (set-keymap-default-binding mime-view-mode-map default)
883 (setq mime-view-mode-map
884 (append mime-view-mode-map (list (cons t default))))
887 (define-key mime-view-mode-map
888 mouse-button-2 (function mime-button-dispatcher))
890 (cond (running-xemacs
891 (define-key mime-view-mode-map
892 mouse-button-3 (function mime-view-xemacs-popup-menu))
894 ((>= emacs-major-version 19)
895 (define-key mime-view-mode-map [menu-bar mime-view]
896 (cons mime-view-menu-title
897 (make-sparse-keymap mime-view-menu-title)))
900 (define-key mime-view-mode-map
901 (vector 'menu-bar 'mime-view (car item))
902 (cons (nth 1 item)(nth 2 item))
905 (reverse mime-view-menu-list)
908 (use-local-map mime-view-mode-map)
909 (run-hooks 'mime-view-define-keymap-hook)
912 (defsubst mime-maybe-hide-echo-buffer ()
913 "Clear mime-echo buffer and delete window for it."
914 (let ((buf (get-buffer mime-echo-buffer-name)))
919 (let ((win (get-buffer-window buf)))
926 (defvar mime-view-redisplay nil)
928 (defun mime-display-message (message &optional preview-buffer
929 mother default-keymap-or-function)
930 (mime-maybe-hide-echo-buffer)
931 (let ((win-conf (current-window-configuration))
932 (raw-buffer (mime-entity-buffer message)))
935 (concat "*Preview-" (buffer-name raw-buffer) "*")))
936 (set-buffer raw-buffer)
937 (setq mime-preview-buffer preview-buffer)
938 (let ((inhibit-read-only t))
939 (set-buffer (get-buffer-create preview-buffer))
942 (setq mime-raw-buffer raw-buffer)
944 (setq mime-mother-buffer mother)
946 (setq mime-preview-original-window-configuration win-conf)
947 (setq major-mode 'mime-view-mode)
948 (setq mode-name "MIME-View")
949 (mime-display-entity message nil
950 '((entity-button . invisible)
953 (mime-view-define-keymap default-keymap-or-function)
955 (next-single-property-change (point-min) 'mime-view-entity)))
958 (goto-char (point-min))
959 (search-forward "\n\n" nil t)
961 (run-hooks 'mime-view-mode-hook)
962 (set-buffer-modified-p nil)
963 (setq buffer-read-only t)
964 (or (get-buffer-window preview-buffer)
965 (let ((r-win (get-buffer-window raw-buffer)))
967 (set-window-buffer r-win preview-buffer)
968 (switch-to-buffer preview-buffer)
972 (defun mime-view-buffer (&optional raw-buffer preview-buffer mother
973 default-keymap-or-function)
975 (mime-display-message
976 (mime-parse-buffer raw-buffer)
977 preview-buffer mother default-keymap-or-function))
979 (defun mime-view-mode (&optional mother ctl encoding
980 raw-buffer preview-buffer
981 default-keymap-or-function)
982 "Major mode for viewing MIME message.
984 Here is a list of the standard keys for mime-view-mode.
989 u Move to upper content
990 p or M-TAB Move to previous content
991 n or TAB Move to next content
992 SPC Scroll up or move to next content
993 M-SPC or DEL Scroll down or move to previous content
994 RET Move to next line
995 M-RET Move to previous line
996 v Decode current content as `play mode'
997 e Decode current content as `extract mode'
998 C-c C-p Decode current content as `print mode'
999 a Followup to current content.
1001 button-2 Move to point under the mouse cursor
1002 and decode current content as `play mode'
1005 (mime-display-message
1007 (if raw-buffer (set-buffer raw-buffer))
1008 (or mime-view-redisplay
1009 (setq mime-message-structure (mime-parse-message ctl encoding)))
1011 preview-buffer mother default-keymap-or-function))
1017 (autoload 'mime-preview-play-current-entity "mime-play"
1018 "Play current entity." t)
1020 (defun mime-preview-extract-current-entity ()
1021 "Extract current entity into file (maybe).
1022 It decodes current entity to call internal or external method as
1023 \"extract\" mode. The method is selected from variable
1024 `mime-acting-condition'."
1026 (mime-preview-play-current-entity "extract")
1029 (defun mime-preview-print-current-entity ()
1030 "Print current entity (maybe).
1031 It decodes current entity to call internal or external method as
1032 \"print\" mode. The method is selected from variable
1033 `mime-acting-condition'."
1035 (mime-preview-play-current-entity "print")
1042 (defun mime-preview-follow-current-entity ()
1043 "Write follow message to current entity.
1044 It calls following-method selected from variable
1045 `mime-preview-following-method-alist'."
1048 (while (null (setq entity
1049 (get-text-property (point) 'mime-view-entity)))
1053 (previous-single-property-change (point) 'mime-view-entity))
1055 (entity-node-id (mime-entity-node-id entity))
1056 (len (length entity-node-id))
1060 (if (eq (next-single-property-change (point-min)
1066 ((eq (next-single-property-change p-beg 'mime-view-entity)
1068 (setq p-beg (point))
1070 (setq p-end (next-single-property-change p-beg 'mime-view-entity))
1072 (setq p-end (point-max))
1074 ((null entity-node-id)
1075 (setq p-end (point-max))
1083 (next-single-property-change
1084 (point) 'mime-view-entity))
1086 (let ((rc (mime-entity-node-id
1087 (get-text-property (point)
1088 'mime-view-entity))))
1089 (or (equal entity-node-id
1090 (nthcdr (- (length rc) len) rc))
1095 (setq p-end (point-max))
1098 (let* ((mode (mime-preview-original-major-mode 'recursive))
1100 (format "%s-%s" (buffer-name) (reverse entity-node-id)))
1102 (the-buf (current-buffer))
1103 (a-buf mime-raw-buffer)
1106 (set-buffer (setq new-buf (get-buffer-create new-name)))
1108 (insert-buffer-substring the-buf p-beg p-end)
1109 (goto-char (point-min))
1110 (let ((entity-node-id (mime-entity-node-id entity)) ci str)
1118 (mime-raw-find-entity-from-node-id entity-node-id))
1121 (mime-entity-point-min ci)
1122 (mime-entity-point-max ci)
1124 (std11-header-string-except
1126 (apply (function regexp-or) fields)
1129 (eq (mime-entity-media-type ci) 'message)
1130 (eq (mime-entity-media-subtype ci) 'rfc822))
1136 (setq fields (std11-collect-field-names)
1137 entity-node-id (cdr entity-node-id))
1140 (let ((rest mime-view-following-required-fields-list))
1142 (let ((field-name (car rest)))
1143 (or (std11-field-body field-name)
1149 (set-buffer the-buf)
1150 (set-buffer mime-mother-buffer)
1151 (set-buffer mime-raw-buffer)
1152 (std11-field-body field-name)
1156 (setq rest (cdr rest))
1158 (eword-decode-header)
1160 (let ((f (cdr (assq mode mime-preview-following-method-alist))))
1165 "Sorry, following method for %s is not implemented yet."
1174 (defun mime-preview-move-to-upper ()
1175 "Move to upper entity.
1176 If there is no upper entity, call function `mime-preview-quit'."
1179 (while (null (setq cinfo
1180 (get-text-property (point) 'mime-view-entity)))
1183 (let ((r (mime-raw-find-entity-from-node-id
1184 (cdr (mime-entity-node-id cinfo))
1185 (get-text-property 1 'mime-view-entity)))
1188 (while (setq point (previous-single-property-change
1189 (point) 'mime-view-entity))
1191 (if (eq r (get-text-property (point) 'mime-view-entity))
1198 (defun mime-preview-move-to-previous ()
1199 "Move to previous entity.
1200 If there is no previous entity, it calls function registered in
1201 variable `mime-preview-over-to-previous-method-alist'."
1203 (while (null (get-text-property (point) 'mime-view-entity))
1206 (let ((point (previous-single-property-change (point) 'mime-view-entity)))
1208 (if (get-text-property (1- point) 'mime-view-entity)
1210 (goto-char (1- point))
1211 (mime-preview-move-to-previous)
1213 (let ((f (assq (mime-preview-original-major-mode)
1214 mime-preview-over-to-previous-method-alist)))
1220 (defun mime-preview-move-to-next ()
1221 "Move to next entity.
1222 If there is no previous entity, it calls function registered in
1223 variable `mime-preview-over-to-next-method-alist'."
1225 (while (null (get-text-property (point) 'mime-view-entity))
1228 (let ((point (next-single-property-change (point) 'mime-view-entity)))
1232 (if (null (get-text-property point 'mime-view-entity))
1233 (mime-preview-move-to-next)
1235 (let ((f (assq (mime-preview-original-major-mode)
1236 mime-preview-over-to-next-method-alist)))
1242 (defun mime-preview-scroll-up-entity (&optional h)
1243 "Scroll up current entity.
1244 If reached to (point-max), it calls function registered in variable
1245 `mime-preview-over-to-next-method-alist'."
1248 (setq h (1- (window-height)))
1250 (if (= (point) (point-max))
1251 (let ((f (assq (mime-preview-original-major-mode)
1252 mime-preview-over-to-next-method-alist)))
1257 (or (next-single-property-change (point) 'mime-view-entity)
1260 (if (> (point) point)
1265 (defun mime-preview-scroll-down-entity (&optional h)
1266 "Scroll down current entity.
1267 If reached to (point-min), it calls function registered in variable
1268 `mime-preview-over-to-previous-method-alist'."
1271 (setq h (1- (window-height)))
1273 (if (= (point) (point-min))
1274 (let ((f (assq (mime-preview-original-major-mode)
1275 mime-preview-over-to-previous-method-alist)))
1280 (or (previous-single-property-change (point) 'mime-view-entity)
1282 (forward-line (- h))
1283 (if (< (point) point)
1287 (defun mime-preview-next-line-entity ()
1289 (mime-preview-scroll-up-entity 1)
1292 (defun mime-preview-previous-line-entity ()
1294 (mime-preview-scroll-down-entity 1)
1301 (defun mime-preview-quit ()
1302 "Quit from MIME-preview buffer.
1303 It calls function registered in variable
1304 `mime-preview-quitting-method-alist'."
1306 (let ((r (assq (mime-preview-original-major-mode)
1307 mime-preview-quitting-method-alist)))
1312 (defun mime-preview-kill-buffer ()
1314 (kill-buffer (current-buffer))
1321 (provide 'mime-view)
1323 (run-hooks 'mime-view-load-hook)
1325 ;;; mime-view.el ends here