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 WEMI (Widget based 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.
42 (defconst mime-view-version-string
43 `,(concat (car mime-user-interface-version) " MIME-View "
44 (mapconcat #'number-to-string
45 (cddr mime-user-interface-version) ".")
46 " (" (cadr mime-user-interface-version) ")"))
52 (defgroup mime-view nil
56 (defcustom mime-view-find-every-acting-situation t
57 "*Find every available acting-situation if non-nil."
61 (defcustom mime-acting-situation-examples-file "~/.mime-example"
62 "*File name of example about acting-situation demonstrated by user."
67 ;;; @ in raw-buffer (representation space)
70 (defvar mime-raw-message-info nil
71 "Information about structure of message.
72 Please use reference function `mime-entity-SLOT' to get value of SLOT.
74 Following is a list of slots of the structure:
76 buffer buffer includes this entity (buffer).
77 node-id node-id (list of integers)
78 header-start minimum point of header in raw-buffer
79 header-end maximum point of header in raw-buffer
80 body-start minimum point of body in raw-buffer
81 body-end maximum point of body in raw-buffer
82 content-type content-type (content-type)
83 content-disposition content-disposition (content-disposition)
84 encoding Content-Transfer-Encoding (string or nil)
85 children entities included in this entity (list of entity)
87 If an entity includes other entities in its body, such as multipart or
88 message/rfc822, `mime-entity' structures of them are included in
89 `children', so the `mime-entity' structure become a tree.")
90 (make-variable-buffer-local 'mime-raw-message-info)
93 (defvar mime-preview-buffer nil
94 "MIME-preview buffer corresponding with the (raw) buffer.")
95 (make-variable-buffer-local 'mime-preview-buffer)
98 (defvar mime-raw-representation-type nil
99 "Representation-type of mime-raw-buffer.
100 It must be nil, `binary' or `cooked'.
101 If it is nil, `mime-raw-representation-type-alist' is used as default
103 Notice that this variable is usually used as buffer local variable in
106 (make-variable-buffer-local 'mime-raw-representation-type)
108 (defvar mime-raw-representation-type-alist
109 '((mime-show-message-mode . binary)
110 (mime-temp-message-mode . binary)
113 "Alist of major-mode vs. representation-type of mime-raw-buffer.
114 Each element looks like (SYMBOL . REPRESENTATION-TYPE). SYMBOL is
115 major-mode or t. t means default. REPRESENTATION-TYPE must be
116 `binary' or `cooked'.
117 This value is overridden by buffer local variable
118 `mime-raw-representation-type' if it is not nil.")
121 (defsubst mime-raw-find-entity-from-node-id (entity-node-id
122 &optional message-info)
123 "Return entity from ENTITY-NODE-ID in mime-raw-buffer.
124 If optional argument MESSAGE-INFO is not specified,
125 `mime-raw-message-info' is used."
126 (mime-raw-find-entity-from-number (reverse entity-node-id) message-info))
128 (defun mime-raw-find-entity-from-number (entity-number &optional message-info)
129 "Return entity from ENTITY-NUMBER in mime-raw-buffer.
130 If optional argument MESSAGE-INFO is not specified,
131 `mime-raw-message-info' is used."
133 (setq message-info mime-raw-message-info))
134 (if (eq entity-number t)
136 (let ((sn (car entity-number)))
139 (let ((rc (nth sn (mime-entity-children message-info))))
141 (mime-raw-find-entity-from-number (cdr entity-number) rc)
145 (defun mime-raw-find-entity-from-point (point &optional message-info)
146 "Return entity from POINT in mime-raw-buffer.
147 If optional argument MESSAGE-INFO is not specified,
148 `mime-raw-message-info' is used."
150 (setq message-info mime-raw-message-info))
151 (if (and (<= (mime-entity-point-min message-info) point)
152 (<= point (mime-entity-point-max message-info)))
153 (let ((children (mime-entity-children message-info)))
157 (mime-raw-find-entity-from-point point (car children))))
161 (setq children (cdr children)))
165 ;;; @ in preview-buffer (presentation space)
168 (defvar mime-mother-buffer nil
169 "Mother buffer corresponding with the (MIME-preview) buffer.
170 If current MIME-preview buffer is generated by other buffer, such as
171 message/partial, it is called `mother-buffer'.")
172 (make-variable-buffer-local 'mime-mother-buffer)
174 (defvar mime-raw-buffer nil
175 "Raw buffer corresponding with the (MIME-preview) buffer.")
176 (make-variable-buffer-local 'mime-raw-buffer)
178 (defvar mime-preview-original-window-configuration nil
179 "Window-configuration before mime-view-mode is called.")
180 (make-variable-buffer-local 'mime-preview-original-window-configuration)
182 (defun mime-preview-original-major-mode (&optional recursive)
183 "Return major-mode of original buffer.
184 If optional argument RECURSIVE is non-nil and current buffer has
185 mime-mother-buffer, it returns original major-mode of the
187 (if (and recursive mime-mother-buffer)
189 (set-buffer mime-mother-buffer)
190 (mime-preview-original-major-mode recursive)
195 (get-text-property (point-min) 'mime-view-entity)))
199 ;;; @ entity information
202 (defsubst mime-entity-parent (entity &optional message-info)
203 "Return mother entity of ENTITY.
204 If optional argument MESSAGE-INFO is not specified,
205 `mime-raw-message-info' in buffer of ENTITY is used."
206 (mime-raw-find-entity-from-node-id
207 (cdr (mime-entity-node-id entity))
210 (set-buffer (mime-entity-buffer entity))
211 mime-raw-message-info))))
213 (defun mime-entity-situation (entity)
214 "Return situation of ENTITY."
215 (append (or (mime-entity-content-type entity)
216 (make-mime-content-type 'text 'plain))
217 (let ((d (mime-entity-content-disposition entity)))
218 (cons (cons 'disposition-type
219 (mime-content-disposition-type d))
222 (let ((name (car param)))
223 (cons (cond ((string= name "filename")
225 ((string= name "creation-date")
227 ((string= name "modification-date")
229 ((string= name "read-date")
231 ((string= name "size")
233 (t (cons 'disposition (car param))))
235 (mime-content-disposition-parameters d))
237 (list (cons 'encoding (mime-entity-encoding entity))
240 (set-buffer (mime-entity-buffer entity))
245 (defvar mime-view-uuencode-encoding-name-list '("x-uue" "x-uuencode"))
247 (defun mime-entity-uu-filename (entity)
248 (if (member (mime-entity-encoding entity)
249 mime-view-uuencode-encoding-name-list)
251 (set-buffer (mime-entity-buffer entity))
252 (goto-char (mime-entity-body-start entity))
253 (if (re-search-forward "^begin [0-9]+ "
254 (mime-entity-body-end entity) t)
255 (if (looking-at ".+$")
256 (buffer-substring (match-beginning 0)(match-end 0))
259 (defun mime-entity-filename (entity)
260 (or (mime-entity-uu-filename entity)
261 (let ((ret (mime-entity-content-disposition entity)))
263 (setq ret (mime-content-disposition-filename ret))
264 (std11-strip-quoted-string ret)
266 (let ((ret (mime-entity-content-type entity)))
270 (let ((param (mime-content-type-parameters ret)))
271 (or (assoc "name" param)
272 (assoc "x-name" param))
274 (std11-strip-quoted-string ret)
278 (defun mime-view-entity-title (entity)
279 (or (mime-entity-read-field entity 'Content-Description)
280 (mime-entity-read-field entity 'Subject)
281 (mime-entity-filename entity)
285 (defsubst mime-raw-point-to-entity-node-id (point &optional message-info)
286 "Return entity-node-id from POINT in mime-raw-buffer.
287 If optional argument MESSAGE-INFO is not specified,
288 `mime-raw-message-info' is used."
289 (mime-entity-node-id (mime-raw-find-entity-from-point point message-info)))
291 (defsubst mime-raw-point-to-entity-number (point &optional message-info)
292 "Return entity-number from POINT in mime-raw-buffer.
293 If optional argument MESSAGE-INFO is not specified,
294 `mime-raw-message-info' is used."
295 (mime-entity-number (mime-raw-find-entity-from-point point message-info)))
297 (defun mime-raw-flatten-message-info (&optional message-info)
298 "Return list of entity in mime-raw-buffer.
299 If optional argument MESSAGE-INFO is not specified,
300 `mime-raw-message-info' is used."
302 (setq message-info mime-raw-message-info))
303 (let ((dest (list message-info))
304 (rcl (mime-entity-children message-info)))
306 (setq dest (nconc dest (mime-raw-flatten-message-info (car rcl))))
307 (setq rcl (cdr rcl)))
311 ;;; @ presentation of preview
317 ;;; @@@ predicate function
320 (defun mime-view-entity-button-visible-p (entity)
321 "Return non-nil if header of ENTITY is visible.
322 Please redefine this function if you want to change default setting."
323 (let ((media-type (mime-entity-media-type entity))
324 (media-subtype (mime-entity-media-subtype entity)))
325 (or (not (eq media-type 'application))
326 (and (not (eq media-subtype 'x-selection))
327 (or (not (eq media-subtype 'octet-stream))
328 (let ((mother-entity (mime-entity-parent entity)))
329 (or (not (eq (mime-entity-media-type mother-entity)
331 (not (eq (mime-entity-media-subtype mother-entity)
336 ;;; @@@ entity button generator
339 (defun mime-view-insert-entity-button (entity)
340 "Insert entity-button of ENTITY."
341 (let ((entity-node-id (mime-entity-node-id entity))
342 (params (mime-entity-parameters entity))
343 (subject (mime-view-entity-title entity)))
345 (let ((access-type (assoc "access-type" params))
346 (num (or (cdr (assoc "x-part-number" params))
347 (if (consp entity-node-id)
350 (format "%s" (1+ num))
352 (reverse entity-node-id) ".")
356 (let ((server (assoc "server" params)))
357 (setq access-type (cdr access-type))
359 (format "%s %s ([%s] %s)"
360 num subject access-type (cdr server))
361 (let ((site (cdr (assoc "site" params)))
362 (dir (cdr (assoc "directory" params)))
364 (format "%s %s ([%s] %s:%s)"
365 num subject access-type site dir)
369 (let ((media-type (mime-entity-media-type entity))
370 (media-subtype (mime-entity-media-subtype entity))
371 (charset (cdr (assoc "charset" params)))
372 (encoding (mime-entity-encoding entity)))
376 (format " <%s/%s%s%s>"
377 media-type media-subtype
379 (concat "; " charset)
382 (concat " (" encoding ")")
384 (if (>= (+ (current-column)(length rest))(window-width))
388 (function mime-preview-play-current-entity))
395 (defvar mime-header-presentation-method-alist nil
396 "Alist of major mode vs. corresponding header-presentation-method functions.
397 Each element looks like (SYMBOL . FUNCTION).
398 SYMBOL must be major mode in raw-buffer or t. t means default.
399 Interface of FUNCTION must be (ENTITY SITUATION).")
401 (defvar mime-view-ignored-field-list
402 '(".*Received" ".*Path" ".*Id" "References"
403 "Replied" "Errors-To"
404 "Lines" "Sender" ".*Host" "Xref"
405 "Content-Type" "Precedence"
407 "All fields that match this list will be hidden in MIME preview buffer.
408 Each elements are regexp of field-name.")
410 (defvar mime-view-visible-field-list '("Dnas.*" "Message-Id")
411 "All fields that match this list will be displayed in MIME preview buffer.
412 Each elements are regexp of field-name.")
418 ;;; @@@ predicate function
421 (defun mime-calist::field-match-method-as-default-rule (calist
422 field-type field-value)
423 (let ((s-field (assq field-type calist)))
424 (cond ((null s-field)
425 (cons (cons field-type field-value) calist)
429 (define-calist-field-match-method
430 'header #'mime-calist::field-match-method-as-default-rule)
432 (define-calist-field-match-method
433 'body #'mime-calist::field-match-method-as-default-rule)
436 (defvar mime-preview-condition nil
437 "Condition-tree about how to display entity.")
439 (ctree-set-calist-strictly
440 'mime-preview-condition '((type . application)(subtype . octet-stream)
443 (ctree-set-calist-strictly
444 'mime-preview-condition '((type . application)(subtype . octet-stream)
447 (ctree-set-calist-strictly
448 'mime-preview-condition '((type . application)(subtype . octet-stream)
452 (ctree-set-calist-strictly
453 'mime-preview-condition '((type . application)(subtype . pgp)
456 (ctree-set-calist-strictly
457 'mime-preview-condition '((type . application)(subtype . x-latex)
460 (ctree-set-calist-strictly
461 'mime-preview-condition '((type . application)(subtype . x-selection)
464 (ctree-set-calist-strictly
465 'mime-preview-condition '((type . application)(subtype . x-comment)
468 (ctree-set-calist-strictly
469 'mime-preview-condition '((type . message)(subtype . delivery-status)
472 (ctree-set-calist-strictly
473 'mime-preview-condition
475 (body-presentation-method . mime-display-text/plain)))
477 (ctree-set-calist-strictly
478 'mime-preview-condition
481 (body-presentation-method . mime-display-text/plain)))
483 (ctree-set-calist-strictly
484 'mime-preview-condition
485 '((type . text)(subtype . enriched)
487 (body-presentation-method . mime-display-text/enriched)))
489 (ctree-set-calist-strictly
490 'mime-preview-condition
491 '((type . text)(subtype . richtext)
493 (body-presentation-method . mime-display-text/richtext)))
495 (ctree-set-calist-strictly
496 'mime-preview-condition
497 '((type . text)(subtype . t)
499 (body-presentation-method . mime-display-text/plain)))
501 (ctree-set-calist-strictly
502 'mime-preview-condition
503 '((type . multipart)(subtype . alternative)
505 (body-presentation-method . mime-display-multipart/alternative)))
507 (ctree-set-calist-strictly
508 'mime-preview-condition '((type . message)(subtype . partial)
509 (body-presentation-method
510 . mime-display-message/partial-button)))
512 (ctree-set-calist-strictly
513 'mime-preview-condition '((type . message)(subtype . rfc822)
514 (body-presentation-method . nil)
515 (childrens-situation (header . visible)
516 (entity-button . invisible))))
518 (ctree-set-calist-strictly
519 'mime-preview-condition '((type . message)(subtype . news)
520 (body-presentation-method . nil)
521 (childrens-situation (header . visible)
522 (entity-button . invisible))))
525 ;;; @@@ entity presentation
528 (autoload 'mime-display-text/plain "mime-text")
529 (autoload 'mime-display-text/enriched "mime-text")
530 (autoload 'mime-display-text/richtext "mime-text")
532 (defvar mime-view-announcement-for-message/partial
533 (if (and (>= emacs-major-version 19) window-system)
535 This is message/partial style split message.
536 Please press `v' key in this buffer or click here by mouse button-2."
538 This is message/partial style split message.
539 Please press `v' key in this buffer."
542 (defun mime-display-message/partial-button (&optional entity situation)
544 (goto-char (point-max))
545 (if (not (search-backward "\n\n" nil t))
548 (goto-char (point-max))
549 ;;(narrow-to-region (point-max)(point-max))
550 ;;(insert mime-view-announcement-for-message/partial)
551 ;; (mime-add-button (point-min)(point-max)
552 ;; #'mime-preview-play-current-entity)
553 (mime-insert-button mime-view-announcement-for-message/partial
554 #'mime-preview-play-current-entity)
557 (defun mime-display-multipart/mixed (entity situation)
558 (let ((children (mime-entity-children entity))
560 (cdr (assq 'childrens-situation situation))))
562 (mime-display-entity (car children) nil default-situation)
563 (setq children (cdr children))
566 (defcustom mime-view-type-subtype-score-alist
567 '(((text . enriched) . 3)
568 ((text . richtext) . 2)
571 "Alist MEDIA-TYPE vs corresponding score.
572 MEDIA-TYPE must be (TYPE . SUBTYPE), TYPE or t. t means default."
574 :type '(repeat (cons (choice :tag "Media-Type"
575 (item :tag "Type/Subtype"
576 (cons symbol symbol))
577 (item :tag "Type" symbol)
578 (item :tag "Default" t))
581 (defun mime-display-multipart/alternative (entity situation)
582 (let* ((children (mime-entity-children entity))
584 (cdr (assq 'childrens-situation situation)))
592 (or (ctree-match-calist
593 mime-preview-condition
594 (append (mime-entity-situation child)
597 (if (cdr (assq 'body-presentation-method situation))
602 (cdr (assq 'type situation))
603 (cdr (assq 'subtype situation)))
604 mime-view-type-subtype-score-alist)
606 (cdr (assq 'type situation))
607 mime-view-type-subtype-score-alist)
610 mime-view-type-subtype-score-alist)
612 (if (> score max-score)
622 (let ((child (car children))
623 (situation (car situations)))
624 (mime-display-entity child (if (= i p)
626 (del-alist 'body-presentation-method
627 (copy-alist situation))))
629 (setq children (cdr children)
630 situations (cdr situations)
635 ;;; @ acting-condition
638 (defvar mime-acting-condition nil
639 "Condition-tree about how to process entity.")
641 (if (file-readable-p mailcap-file)
642 (let ((entries (mailcap-parse-file)))
644 (let ((entry (car entries))
647 (let* ((field (car entry))
648 (field-type (car field)))
649 (cond ((eq field-type 'view) (setq view field))
650 ((eq field-type 'print) (setq print field))
651 ((memq field-type '(compose composetyped edit)))
652 (t (setq shared (cons field shared))))
654 (setq entry (cdr entry))
656 (setq shared (nreverse shared))
657 (ctree-set-calist-with-default
658 'mime-acting-condition
659 (append shared (list '(mode . "play")(cons 'method (cdr view)))))
661 (ctree-set-calist-with-default
662 'mime-acting-condition
664 (list '(mode . "print")(cons 'method (cdr view))))
667 (setq entries (cdr entries))
670 (ctree-set-calist-strictly
671 'mime-acting-condition
672 '((type . application)(subtype . octet-stream)
674 (method . mime-detect-content)
677 (ctree-set-calist-with-default
678 'mime-acting-condition
680 (method . mime-save-content)))
682 (ctree-set-calist-strictly
683 'mime-acting-condition
684 '((type . text)(subtype . x-rot13-47)(mode . "play")
685 (method . mime-view-caesar)
687 (ctree-set-calist-strictly
688 'mime-acting-condition
689 '((type . text)(subtype . x-rot13-47-48)(mode . "play")
690 (method . mime-view-caesar)
693 (ctree-set-calist-strictly
694 'mime-acting-condition
695 '((type . message)(subtype . rfc822)(mode . "play")
696 (method . mime-view-message/rfc822)
698 (ctree-set-calist-strictly
699 'mime-acting-condition
700 '((type . message)(subtype . partial)(mode . "play")
701 (method . mime-store-message/partial-piece)
704 (ctree-set-calist-strictly
705 'mime-acting-condition
706 '((type . message)(subtype . external-body)
707 ("access-type" . "anon-ftp")
708 (method . mime-view-message/external-ftp)
711 (ctree-set-calist-strictly
712 'mime-acting-condition
713 '((type . application)(subtype . octet-stream)
714 (method . mime-save-content)
718 ;;; @ quitting method
721 (defvar mime-preview-quitting-method-alist
722 '((mime-show-message-mode
723 . mime-preview-quitting-method-for-mime-show-message-mode))
724 "Alist of major-mode vs. quitting-method of mime-view.")
726 (defvar mime-preview-over-to-previous-method-alist nil
727 "Alist of major-mode vs. over-to-previous-method of mime-view.")
729 (defvar mime-preview-over-to-next-method-alist nil
730 "Alist of major-mode vs. over-to-next-method of mime-view.")
733 ;;; @ following method
736 (defvar mime-preview-following-method-alist nil
737 "Alist of major-mode vs. following-method of mime-view.")
739 (defvar mime-view-following-required-fields-list
746 ;; hack from Gnus 5.0.4.
748 (defvar mime-view-x-face-to-pbm-command
749 "{ echo '/* Width=48, Height=48 */'; uncompface; } | icontopbm")
751 (defvar mime-view-x-face-command
752 (concat mime-view-x-face-to-pbm-command
754 "String to be executed to display an X-Face field.
755 The command will be executed in a sub-shell asynchronously.
756 The compressed face will be piped to this command.")
758 (defun mime-view-x-face-function ()
759 "Function to display X-Face field. You can redefine to customize."
760 ;; 1995/10/12 (c.f. tm-eng:130)
761 ;; fixed by Eric Ding <ericding@San-Jose.ate.slb.com>
763 (narrow-to-region (point-min) (re-search-forward "^$" nil t))
765 (goto-char (point-min))
766 (if (re-search-forward "^X-Face:[ \t]*" nil t)
767 (let ((beg (match-end 0))
768 (end (std11-field-end))
770 (call-process-region beg end "sh" nil 0 nil
771 "-c" mime-view-x-face-command)
778 (defun mime-display-entity (entity &optional situation
779 default-situation preview-buffer)
781 (setq preview-buffer (current-buffer)))
782 (let* ((raw-buffer (mime-entity-buffer entity))
783 (start (mime-entity-point-min entity))
785 (set-buffer raw-buffer)
789 (or (ctree-match-calist mime-preview-condition
790 (append (mime-entity-situation entity)
793 (let ((button-is-invisible
794 (eq (cdr (assq 'entity-button situation)) 'invisible))
796 (eq (cdr (assq 'header situation)) 'visible))
797 (header-presentation-method
798 (or (cdr (assq 'header-presentation-method situation))
799 (cdr (assq major-mode mime-header-presentation-method-alist))))
800 (body-presentation-method
801 (cdr (assq 'body-presentation-method situation)))
802 (children (mime-entity-children entity)))
803 (set-buffer preview-buffer)
805 (narrow-to-region nb nb)
806 (or button-is-invisible
807 (if (mime-view-entity-button-visible-p entity)
808 (mime-view-insert-entity-button entity)
810 (when header-is-visible
811 (if header-presentation-method
812 (funcall header-presentation-method entity situation)
813 (mime-insert-decoded-header
815 mime-view-ignored-field-list mime-view-visible-field-list
817 (set-buffer raw-buffer)
818 (if (eq (cdr (assq major-mode mime-raw-representation-type-alist))
820 default-mime-charset)
822 (goto-char (point-max))
824 (run-hooks 'mime-display-header-hook)
827 ((functionp body-presentation-method)
828 (funcall body-presentation-method entity situation)
831 (when button-is-invisible
832 (goto-char (point-max))
833 (mime-view-insert-entity-button entity)
835 (or header-is-visible
837 (goto-char (point-max))
841 (setq ne (point-max))
843 (put-text-property nb ne 'mime-view-entity entity)
846 (if (functionp body-presentation-method)
847 (funcall body-presentation-method entity situation)
848 (mime-display-multipart/mixed entity situation)
853 ;;; @ MIME viewer mode
856 (defconst mime-view-menu-title "MIME-View")
857 (defconst mime-view-menu-list
858 '((up "Move to upper entity" mime-preview-move-to-upper)
859 (previous "Move to previous entity" mime-preview-move-to-previous)
860 (next "Move to next entity" mime-preview-move-to-next)
861 (scroll-down "Scroll-down" mime-preview-scroll-down-entity)
862 (scroll-up "Scroll-up" mime-preview-scroll-up-entity)
863 (play "Play current entity" mime-preview-play-current-entity)
864 (extract "Extract current entity" mime-preview-extract-current-entity)
865 (print "Print current entity" mime-preview-print-current-entity)
866 (x-face "Show X Face" mime-preview-display-x-face)
868 "Menu for MIME Viewer")
870 (cond (running-xemacs
871 (defvar mime-view-xemacs-popup-menu
872 (cons mime-view-menu-title
875 (vector (nth 1 item)(nth 2 item) t)
877 mime-view-menu-list)))
878 (defun mime-view-xemacs-popup-menu (event)
879 "Popup the menu in the MIME Viewer buffer"
881 (select-window (event-window event))
882 (set-buffer (event-buffer event))
883 (popup-menu 'mime-view-xemacs-popup-menu))
884 (defvar mouse-button-2 'button2)
887 (defvar mouse-button-2 [mouse-2])
890 (defun mime-view-define-keymap (&optional default)
891 (let ((mime-view-mode-map (if (keymapp default)
892 (copy-keymap default)
895 (define-key mime-view-mode-map
896 "u" (function mime-preview-move-to-upper))
897 (define-key mime-view-mode-map
898 "p" (function mime-preview-move-to-previous))
899 (define-key mime-view-mode-map
900 "n" (function mime-preview-move-to-next))
901 (define-key mime-view-mode-map
902 "\e\t" (function mime-preview-move-to-previous))
903 (define-key mime-view-mode-map
904 "\t" (function mime-preview-move-to-next))
905 (define-key mime-view-mode-map
906 " " (function mime-preview-scroll-up-entity))
907 (define-key mime-view-mode-map
908 "\M- " (function mime-preview-scroll-down-entity))
909 (define-key mime-view-mode-map
910 "\177" (function mime-preview-scroll-down-entity))
911 (define-key mime-view-mode-map
912 "\C-m" (function mime-preview-next-line-entity))
913 (define-key mime-view-mode-map
914 "\C-\M-m" (function mime-preview-previous-line-entity))
915 (define-key mime-view-mode-map
916 "v" (function mime-preview-play-current-entity))
917 (define-key mime-view-mode-map
918 "e" (function mime-preview-extract-current-entity))
919 (define-key mime-view-mode-map
920 "\C-c\C-p" (function mime-preview-print-current-entity))
921 (define-key mime-view-mode-map
922 "a" (function mime-preview-follow-current-entity))
923 (define-key mime-view-mode-map
924 "q" (function mime-preview-quit))
925 (define-key mime-view-mode-map
926 "\C-c\C-x" (function mime-preview-kill-buffer))
927 ;; (define-key mime-view-mode-map
928 ;; "<" (function beginning-of-buffer))
929 ;; (define-key mime-view-mode-map
930 ;; ">" (function end-of-buffer))
931 (define-key mime-view-mode-map
932 "?" (function describe-mode))
933 (define-key mime-view-mode-map
934 [tab] (function mime-preview-move-to-next))
935 (define-key mime-view-mode-map
936 [delete] (function mime-preview-scroll-down-entity))
937 (define-key mime-view-mode-map
938 [backspace] (function mime-preview-scroll-down-entity))
939 (if (functionp default)
940 (cond (running-xemacs
941 (set-keymap-default-binding mime-view-mode-map default)
944 (setq mime-view-mode-map
945 (append mime-view-mode-map (list (cons t default))))
948 (define-key mime-view-mode-map
949 mouse-button-2 (function mime-button-dispatcher))
951 (cond (running-xemacs
952 (define-key mime-view-mode-map
953 mouse-button-3 (function mime-view-xemacs-popup-menu))
955 ((>= emacs-major-version 19)
956 (define-key mime-view-mode-map [menu-bar mime-view]
957 (cons mime-view-menu-title
958 (make-sparse-keymap mime-view-menu-title)))
961 (define-key mime-view-mode-map
962 (vector 'menu-bar 'mime-view (car item))
963 (cons (nth 1 item)(nth 2 item))
966 (reverse mime-view-menu-list)
969 (use-local-map mime-view-mode-map)
970 (run-hooks 'mime-view-define-keymap-hook)
973 (defsubst mime-maybe-hide-echo-buffer ()
974 "Clear mime-echo buffer and delete window for it."
975 (let ((buf (get-buffer mime-echo-buffer-name)))
980 (let ((win (get-buffer-window buf)))
987 (defvar mime-view-redisplay nil)
989 (defun mime-display-message (message &optional preview-buffer
990 mother default-keymap-or-function)
991 (mime-maybe-hide-echo-buffer)
992 (let ((win-conf (current-window-configuration))
993 (raw-buffer (mime-entity-buffer message)))
996 (concat "*Preview-" (buffer-name raw-buffer) "*")))
997 (set-buffer raw-buffer)
998 (setq mime-raw-message-info (mime-parse-message))
999 (setq mime-preview-buffer preview-buffer)
1000 (let ((inhibit-read-only t))
1001 (switch-to-buffer preview-buffer)
1004 (setq mime-raw-buffer raw-buffer)
1006 (setq mime-mother-buffer mother)
1008 (setq mime-preview-original-window-configuration win-conf)
1009 (setq major-mode 'mime-view-mode)
1010 (setq mode-name "MIME-View")
1011 (mime-display-entity message nil
1012 '((entity-button . invisible)
1015 (mime-view-define-keymap default-keymap-or-function)
1017 (next-single-property-change (point-min) 'mime-view-entity)))
1020 (goto-char (point-min))
1021 (search-forward "\n\n" nil t)
1023 (run-hooks 'mime-view-mode-hook)
1025 (set-buffer-modified-p nil)
1026 (setq buffer-read-only t)
1029 (defun mime-view-buffer (&optional raw-buffer preview-buffer mother
1030 default-keymap-or-function)
1032 (mime-display-message
1034 (if raw-buffer (set-buffer raw-buffer))
1035 (mime-parse-message)
1037 preview-buffer mother default-keymap-or-function))
1039 (defun mime-view-mode (&optional mother ctl encoding
1040 raw-buffer preview-buffer
1041 default-keymap-or-function)
1042 "Major mode for viewing MIME message.
1044 Here is a list of the standard keys for mime-view-mode.
1049 u Move to upper content
1050 p or M-TAB Move to previous content
1051 n or TAB Move to next content
1052 SPC Scroll up or move to next content
1053 M-SPC or DEL Scroll down or move to previous content
1054 RET Move to next line
1055 M-RET Move to previous line
1056 v Decode current content as `play mode'
1057 e Decode current content as `extract mode'
1058 C-c C-p Decode current content as `print mode'
1059 a Followup to current content.
1061 button-2 Move to point under the mouse cursor
1062 and decode current content as `play mode'
1065 (mime-display-message
1067 (if raw-buffer (set-buffer raw-buffer))
1068 (or mime-view-redisplay
1069 (mime-parse-message ctl encoding))
1071 preview-buffer mother default-keymap-or-function))
1077 (autoload 'mime-preview-play-current-entity "mime-play"
1078 "Play current entity." t)
1080 (defun mime-preview-extract-current-entity ()
1081 "Extract current entity into file (maybe).
1082 It decodes current entity to call internal or external method as
1083 \"extract\" mode. The method is selected from variable
1084 `mime-acting-condition'."
1086 (mime-preview-play-current-entity "extract")
1089 (defun mime-preview-print-current-entity ()
1090 "Print current entity (maybe).
1091 It decodes current entity to call internal or external method as
1092 \"print\" mode. The method is selected from variable
1093 `mime-acting-condition'."
1095 (mime-preview-play-current-entity "print")
1102 (defun mime-preview-follow-current-entity ()
1103 "Write follow message to current entity.
1104 It calls following-method selected from variable
1105 `mime-preview-following-method-alist'."
1108 (while (null (setq entity
1109 (get-text-property (point) 'mime-view-entity)))
1113 (previous-single-property-change (point) 'mime-view-entity))
1115 (entity-node-id (mime-entity-node-id entity))
1116 (len (length entity-node-id))
1120 (if (eq (next-single-property-change (point-min)
1126 ((eq (next-single-property-change p-beg 'mime-view-entity)
1128 (setq p-beg (point))
1130 (setq p-end (next-single-property-change p-beg 'mime-view-entity))
1132 (setq p-end (point-max))
1134 ((null entity-node-id)
1135 (setq p-end (point-max))
1143 (next-single-property-change
1144 (point) 'mime-view-entity))
1146 (let ((rc (mime-entity-node-id
1147 (get-text-property (point)
1148 'mime-view-entity))))
1149 (or (equal entity-node-id
1150 (nthcdr (- (length rc) len) rc))
1155 (setq p-end (point-max))
1158 (let* ((mode (mime-preview-original-major-mode 'recursive))
1160 (format "%s-%s" (buffer-name) (reverse entity-node-id)))
1162 (the-buf (current-buffer))
1163 (a-buf mime-raw-buffer)
1166 (set-buffer (setq new-buf (get-buffer-create new-name)))
1168 (insert-buffer-substring the-buf p-beg p-end)
1169 (goto-char (point-min))
1170 (let ((entity-node-id (mime-entity-node-id entity)) ci str)
1178 (mime-raw-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)
1189 (eq (mime-entity-media-type ci) 'message)
1190 (eq (mime-entity-media-subtype ci) 'rfc822))
1196 (setq fields (std11-collect-field-names)
1197 entity-node-id (cdr entity-node-id))
1200 (let ((rest mime-view-following-required-fields-list))
1202 (let ((field-name (car rest)))
1203 (or (std11-field-body field-name)
1209 (set-buffer the-buf)
1210 (set-buffer mime-mother-buffer)
1211 (set-buffer mime-raw-buffer)
1212 (std11-field-body field-name)
1216 (setq rest (cdr rest))
1218 (eword-decode-header)
1220 (let ((f (cdr (assq mode mime-preview-following-method-alist))))
1225 "Sorry, following method for %s is not implemented yet."
1234 (defun mime-preview-display-x-face ()
1236 (save-window-excursion
1237 (set-buffer mime-raw-buffer)
1238 (mime-view-x-face-function)
1245 (defun mime-preview-move-to-upper ()
1246 "Move to upper entity.
1247 If there is no upper entity, call function `mime-preview-quit'."
1250 (while (null (setq cinfo
1251 (get-text-property (point) 'mime-view-entity)))
1254 (let ((r (mime-raw-find-entity-from-node-id
1255 (cdr (mime-entity-node-id cinfo))
1256 (get-text-property 1 'mime-view-entity)))
1259 (while (setq point (previous-single-property-change
1260 (point) 'mime-view-entity))
1262 (if (eq r (get-text-property (point) 'mime-view-entity))
1269 (defun mime-preview-move-to-previous ()
1270 "Move to previous entity.
1271 If there is no previous entity, it calls function registered in
1272 variable `mime-preview-over-to-previous-method-alist'."
1274 (while (null (get-text-property (point) 'mime-view-entity))
1277 (let ((point (previous-single-property-change (point) 'mime-view-entity)))
1279 (if (get-text-property (1- point) 'mime-view-entity)
1281 (goto-char (1- point))
1282 (mime-preview-move-to-previous)
1284 (let ((f (assq (mime-preview-original-major-mode)
1285 mime-preview-over-to-previous-method-alist)))
1291 (defun mime-preview-move-to-next ()
1292 "Move to next entity.
1293 If there is no previous entity, it calls function registered in
1294 variable `mime-preview-over-to-next-method-alist'."
1296 (while (null (get-text-property (point) 'mime-view-entity))
1299 (let ((point (next-single-property-change (point) 'mime-view-entity)))
1303 (if (null (get-text-property point 'mime-view-entity))
1304 (mime-preview-move-to-next)
1306 (let ((f (assq (mime-preview-original-major-mode)
1307 mime-preview-over-to-next-method-alist)))
1313 (defun mime-preview-scroll-up-entity (&optional h)
1314 "Scroll up current entity.
1315 If reached to (point-max), it calls function registered in variable
1316 `mime-preview-over-to-next-method-alist'."
1319 (setq h (1- (window-height)))
1321 (if (= (point) (point-max))
1322 (let ((f (assq (mime-preview-original-major-mode)
1323 mime-preview-over-to-next-method-alist)))
1328 (or (next-single-property-change (point) 'mime-view-entity)
1331 (if (> (point) point)
1336 (defun mime-preview-scroll-down-entity (&optional h)
1337 "Scroll down current entity.
1338 If reached to (point-min), it calls function registered in variable
1339 `mime-preview-over-to-previous-method-alist'."
1342 (setq h (1- (window-height)))
1344 (if (= (point) (point-min))
1345 (let ((f (assq (mime-preview-original-major-mode)
1346 mime-preview-over-to-previous-method-alist)))
1351 (or (previous-single-property-change (point) 'mime-view-entity)
1353 (forward-line (- h))
1354 (if (< (point) point)
1358 (defun mime-preview-next-line-entity ()
1360 (mime-preview-scroll-up-entity 1)
1363 (defun mime-preview-previous-line-entity ()
1365 (mime-preview-scroll-down-entity 1)
1372 (defun mime-preview-quit ()
1373 "Quit from MIME-preview buffer.
1374 It calls function registered in variable
1375 `mime-preview-quitting-method-alist'."
1377 (let ((r (assq (mime-preview-original-major-mode)
1378 mime-preview-quitting-method-alist)))
1383 (defun mime-preview-kill-buffer ()
1385 (kill-buffer (current-buffer))
1392 (provide 'mime-view)
1394 (run-hooks 'mime-view-load-hook)
1396 ;;; mime-view.el ends here